fix: v5.0.1 — critical bug fixes from code review

- C1: Remove regex g flag in cmdSearch (skipped matches due to lastIndex)
- C2: Escape user input in RegExp constructor (crash on special chars)
- C3: Convert STATE_TEMPLATE to stateTemplate() function (stale timestamp)
- C4: Validate ignorePatterns length to prevent ReDoS
- W3: Path traversal guard on agentId in resolveAgentWorkspace + discoverAgents
- W7: Correct ISO 8601 week number calculation at year boundaries
- W8: Fix false tag dedup with section-specific regex extraction
- Add context-engine-evaluation.md (decision: hooks-only, no CE variant)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -1,5 +1,42 @@
 # Changelog
 
+## v3.0.0 — 2026-03-24
+
+### Summary
+Major release: **interactive `/mc` commands** for Telegram, Discord, and CLI. You can now inspect, search, restore, and manage agent memory directly from chat.
+
+### Added
+- **`/mc` slash command plugin** — 10 subcommands registered as a native OpenClaw gateway command
+  - `/mc state [agent]` — view current working state
+  - `/mc state --all` — overview of all agents' memory
+  - `/mc history [agent]` — list archived sessions
+  - `/mc restore <N> [agent]` — restore from archive
+  - `/mc clear [agent]` — clear state (auto-archives first)
+  - `/mc search <keyword>` — full-text search across all memory and archives
+  - `/mc settings` — view/update plugin configuration
+  - `/mc compact [agent]` — compress oversized state files
+  - `/mc export [agent|all]` — export memory to markdown file
+  - `/mc --help` — command reference
+- **Multi-agent support** — all commands work across main + sub-agent workspaces
+- **Monospace formatting** — output wrapped in code blocks for aligned display in Telegram/Discord
+- **Auto-archive on clear** — clearing state automatically archives first, preventing data loss
+- **Restore with backup** — restoring an archive backs up current state to `.bak`
+
+### Changed
+- Bumped version to 3.0.0
+- Plugin now ships as two components: `memory-continuity` (lifecycle hooks) + `mc` (slash commands)
+
+---
+
+## v2.7.0 — 2026-03-22
+
+### Changed
+- Memory directory cleanup: auto-remove legacy `STATE_ARCHIVE_*.md` files
+- Max memory files limit (500) with auto-cleanup of oldest files
+- Archive count limit configurable via `maxArchiveCount`
+
+---
+
 ## v2.3.0 — 2026-03-16
 
 ### Summary

MARKETPLACE.md

@@ -0,0 +1,49 @@
+# Memory Continuity — Marketplace Listing
+
+## What it does
+
+Memory Continuity is a **zero-dependency lifecycle plugin** that preserves your working state across session resets, compaction, and gateway restarts. It answers one question:
+
+> What were we doing, where did we stop, and what should happen next?
+
+## Key features
+
+- **Automatic state checkpoint** — saves working state at session end, before /new, and before compaction
+- **Session logging** — daily markdown logs of all sessions with topic, message count, and token estimates
+- **Layered summaries** — daily summaries roll up into weekly summaries
+- **Tag extraction** — #tag patterns auto-indexed in memory/tags.md
+- **Relevance injection** — injects related history at session start based on keyword matching
+- **Memory decay** — old archives move to cold storage after configurable days
+- **CJK-aware** — proper token estimation for Chinese/Japanese/Korean text
+- **Search & recall** — /mc search and /mc recall for cross-memory search
+- **Programmatic API** — other plugins can call mc:recall service directly
+
+## Why this plugin?
+
+| Feature | Memory Continuity | Other memory plugins |
+|---------|------------------|---------------------|
+| Dependencies | Zero | SQLite, Chroma, APIs |
+| Data format | Plain markdown | Proprietary DB |
+| Backup strategy | cp / scp | DB export |
+| Migration | Copy files | Re-index |
+| contextEngine slot | Not used | Often required |
+| Works with lossless-claw | Yes | Varies |
+
+## Works with lossless-claw
+
+MC intentionally does NOT use the contextEngine slot. It runs via lifecycle hooks only. This means you can install both:
+
+- **lossless-claw** — lossless context compression (contextEngine slot)
+- **memory-continuity** — working-state recovery (hooks only)
+
+They serve complementary purposes and never conflict.
+
+## Install
+
+```
+openclaw plugins install https://github.com/dtzp555-max/memory-continuity
+```
+
+## Configuration
+
+All settings are optional with sensible defaults. See `openclaw plugins inspect memory-continuity` for the full config schema.

README.md

@@ -1,6 +1,6 @@
 # memory-continuity
 
-**Current release:** `v2.7.0`
+**Current release:** `v4.0.0`
 
 OpenClaw **lifecycle plugin** for short-term working continuity. Preserves structured in-flight work state across `/new`, reset, gateway restarts, model fallback, and context compaction.
 
@@ -46,6 +46,37 @@ Because state injection happens at the hook level (before the model sees anythin
 
 ## Quick Start
 
+### Marketplace Install (recommended)
+
+```bash
+openclaw plugins install https://github.com/dtzp555-max/memory-continuity
+```
+
+### Works with lossless-claw
+
+This plugin does **not** use the `contextEngine` slot. It runs via lifecycle hooks only, so it coexists perfectly with lossless-claw or any other context engine:
+
+- **lossless-claw** = lossless context compression (contextEngine slot)
+- **memory-continuity** = working-state recovery (hooks only)
+
+Install both for the best experience.
+
+### Programmatic API
+
+Other plugins can call MC's recall function programmatically:
+
+```javascript
+// In another plugin's register() function:
+const recall = api.getService("mc:recall");
+if (recall) {
+  const result = await recall.handler(
+    { topic: "deployment issues", maxItems: 3 },
+    ctx
+  );
+  // result.results = [{ date, type, score, summary }, ...]
+}
+```
+
 ### Install
 
 ```bash
@@ -92,6 +123,62 @@ openclaw gateway restart 2>&1 | grep memory-continuity
 3. Ask "what was the secret?" or "我们刚才聊到哪了"
 4. The agent should immediately surface the recovered state
 
+## Interactive Commands (`/mc`)
+
+v3.0.0 adds a companion plugin that registers `/mc` as a native slash command. Works in Telegram, Discord, and anywhere OpenClaw commands are supported.
+
+```
+/mc state              View main agent's working state
+/mc state --all        Overview of all agents
+/mc state tech_geek    View a specific agent's state
+/mc history            List archived sessions
+/mc restore 3          Restore archive #3
+/mc search auth        Search "auth" across all memory
+/mc settings           View plugin settings
+/mc settings maxArchiveCount 30   Update a setting
+/mc compact            Compress oversized state file
+/mc export all         Export all agents' memory to file
+/mc --help             Command reference
+```
+
+The `/mc` plugin reads memory files directly — no HTTP endpoints, no model invocation. Responses are instant.
+
+### Install the command plugin
+
+The `/mc` command plugin is separate from the lifecycle plugin. To install:
+
+```bash
+# Clone (if you haven't already)
+cd ~/.openclaw/projects
+git clone https://github.com/dtzp555-max/memory-continuity.git
+
+# The mc-plugin is bundled in the mc-plugin/ directory
+cp -r memory-continuity/mc-plugin ~/.openclaw/projects/mc-plugin
+mkdir -p ~/.openclaw/extensions/mc
+cp ~/.openclaw/projects/mc-plugin/* ~/.openclaw/extensions/mc/
+```
+
+Then add to `openclaw.json`:
+```json
+{
+  "plugins": {
+    "allow": ["memory-continuity", "mc"],
+    "entries": {
+      "mc": { "enabled": true }
+    },
+    "installs": {
+      "mc": {
+        "source": "path",
+        "sourcePath": "~/.openclaw/projects/mc-plugin",
+        "installPath": "~/.openclaw/extensions/mc"
+      }
+    }
+  }
+}
+```
+
+Restart the gateway and `/mc --help` should work.
+
 ## Configuration
 
 The plugin works with zero configuration. Optional settings in `openclaw.json`:
@@ -255,6 +342,12 @@ memory-continuity/
 4. **Portable and backupable** — `cp` is your backup tool
 5. **Complements native OpenClaw memory** — does not replace it
 
+## Support
+
+If you find this plugin useful, please consider giving it a ⭐ on GitHub — it helps others discover the project!
+
+[![GitHub stars](https://img.shields.io/github/stars/dtzp555-max/memory-continuity?style=social)](https://github.com/dtzp555-max/memory-continuity)
+
 ## License
 
 MIT

docs/superpowers/plans/2026-03-31-v3.1-short-term-memory.md

@@ -0,0 +1,566 @@
+# v3.1 Short-Term Memory Layer Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Add session logging, smart tail protection during compaction, CJK token awareness, and noise filtering to the Memory Continuity plugin.
+
+**Architecture:** Four independent features added to the existing lifecycle hook system. Session logs write to `memory/sessions/YYYY-MM-DD.md` (one file per day, append-only). Tail protection injects recent critical messages into `before_compaction`. CJK token estimation uses a helper function for line-count decisions. Ignore patterns filter out cron/subagent noise at `agent_end`.
+
+**Tech Stack:** Node.js (ES modules), pure filesystem, zero dependencies
+
+---
+
+## File Structure
+
+| File | Action | Responsibility |
+|------|--------|---------------|
+| `index.js` | Modify | Add session logging in `agent_end`, enhance `before_compaction` with tail protection, add CJK helper, add ignore-pattern filtering |
+| `openclaw.plugin.json` | Modify | Add new config keys: `sessionLogging`, `tailProtectCount`, `ignorePatterns` |
+| `mc-plugin/index.js` | Modify | Add `/mc sessions` subcommand, update help text |
+| `mc-plugin/openclaw.plugin.json` | No change | — |
+
+---
+
+### Task 1: CJK Token Estimation Helper
+
+**Files:**
+- Modify: `index.js` (after line 15, the PLACEHOLDER_VALUES block)
+
+- [ ] **Step 1: Add `estimateTokens` helper function to `index.js`**
+
+Add this after the `PLACEHOLDER_VALUES` constant (line 15):
+
+```javascript
+/**
+ * Estimate token count with CJK awareness.
+ * CJK characters ≈ 1.5 tokens each; Latin words ≈ 1 token per ~4 chars.
+ */
+function estimateTokens(text) {
+  if (!text) return 0;
+  // Count CJK characters (CJK Unified Ideographs + common CJK ranges)
+  const cjkCount = (text.match(/[\u4e00-\u9fff\u3400-\u4dbf\uf900-\ufaff\u3000-\u303f\uff00-\uffef]/g) || []).length;
+  // Remove CJK chars, count remaining as ~1 token per 4 chars
+  const nonCjk = text.replace(/[\u4e00-\u9fff\u3400-\u4dbf\uf900-\ufaff\u3000-\u303f\uff00-\uffef]/g, "");
+  const latinTokens = Math.ceil(nonCjk.length / 4);
+  return Math.ceil(cjkCount * 1.5) + latinTokens;
+}
+```
+
+- [ ] **Step 2: Update `truncate` in `extractStateFromMessages` to use token-aware truncation**
+
+In `extractStateFromMessages` (around line 175), replace the existing `truncate` function:
+
+```javascript
+  // Token-aware truncation
+  const truncate = (s, maxTokens = 200) => {
+    if (estimateTokens(s) <= maxTokens) return s;
+    // Binary search for the right cut point
+    let lo = 0, hi = s.length;
+    while (lo < hi) {
+      const mid = (lo + hi + 1) >> 1;
+      if (estimateTokens(s.slice(0, mid)) <= maxTokens) lo = mid;
+      else hi = mid - 1;
+    }
+    return s.slice(0, lo) + "...";
+  };
+```
+
+- [ ] **Step 3: Verify no syntax errors**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c index.js
+```
+Expected: no output (syntax OK)
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add index.js
+git commit -m "feat: add CJK token-aware estimation helper (v3.1)"
+```
+
+---
+
+### Task 2: Ignore Patterns — Filter Cron/Subagent Noise
+
+**Files:**
+- Modify: `index.js` (agent_end hook, around line 295)
+- Modify: `openclaw.plugin.json` (add `ignorePatterns` config)
+
+- [ ] **Step 1: Add `ignorePatterns` to `openclaw.plugin.json` config schema**
+
+Add after the `maxArchiveCount` property block (after line 29):
+
+```json
+      "ignorePatterns": {
+        "type": "array",
+        "default": [],
+        "description": "Regex patterns to ignore sessions (e.g. cron jobs, subagent noise). Matched against first user message."
+      }
+```
+
+And add corresponding uiHints after the `maxArchiveCount` hint (after line 47):
+
+```json
+    "ignorePatterns": {
+      "label": "Ignore patterns",
+      "help": "Skip state extraction for sessions matching these patterns (regex)"
+    }
+```
+
+- [ ] **Step 2: Add ignore-pattern check in `agent_end` hook in `index.js`**
+
+In the `agent_end` hook, after the `realUserMsgs` filtering block (after line 321), add:
+
+```javascript
+      // Check ignore patterns — skip sessions matching cron/subagent noise
+      const ignorePatterns = (config.ignorePatterns || [])
+        .map(p => { try { return new RegExp(p, "i"); } catch { return null; } })
+        .filter(Boolean);
+
+      if (ignorePatterns.length > 0 && realUserMsgs.length > 0) {
+        const firstMsg = realUserMsgs[0];
+        if (ignorePatterns.some(re => re.test(firstMsg))) {
+          log.info?.("[memory-continuity] Session matches ignorePattern, skipping");
+          return;
+        }
+      }
+```
+
+- [ ] **Step 3: Verify no syntax errors**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c index.js
+```
+Expected: no output (syntax OK)
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add index.js openclaw.plugin.json
+git commit -m "feat: add ignorePatterns to filter cron/subagent noise (v3.1)"
+```
+
+---
+
+### Task 3: Session Logging
+
+**Files:**
+- Modify: `index.js` (add `writeSessionLog` helper + call it in `agent_end`)
+
+- [ ] **Step 1: Add `writeSessionLog` helper function to `index.js`**
+
+Add after the `cleanupMemoryDir` function (after line 140):
+
+```javascript
+/**
+ * Append a session summary to the daily session log.
+ * File: memory/sessions/YYYY-MM-DD.md (one per day, append-only)
+ */
+function writeSessionLog(workspaceDir, messages, config = {}) {
+  if (config.sessionLogging === false) return;
+  if (!messages || messages.length === 0) return;
+
+  const now = new Date();
+  const pad = (n) => String(n).padStart(2, "0");
+  const dateStr = `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}`;
+  const timeStr = `${pad(now.getHours())}:${pad(now.getMinutes())}`;
+
+  const sessionsDir = path.join(workspaceDir, "memory", "sessions");
+  fs.mkdirSync(sessionsDir, { recursive: true });
+
+  const logFile = path.join(sessionsDir, `${dateStr}.md`);
+
+  // Extract first meaningful user message as topic
+  let topic = "(no topic)";
+  for (const msg of messages) {
+    if (msg?.role !== "user") continue;
+    const text = typeof msg.content === "string"
+      ? msg.content
+      : Array.isArray(msg.content)
+        ? msg.content.filter(b => b?.type === "text").map(b => b.text).join("\n")
+        : "";
+    const cleaned = text
+      .replace(/^Conversation info \(untrusted metadata\):[\s\S]*?\n\n/m, "")
+      .replace(/^Sender \(untrusted metadata\):[\s\S]*?\n\n/m, "")
+      .trim();
+    if (cleaned.length > 10) {
+      topic = cleaned.split("\n")[0].slice(0, 120);
+      break;
+    }
+  }
+
+  // Count messages by role
+  const userCount = messages.filter(m => m?.role === "user").length;
+  const assistantCount = messages.filter(m => m?.role === "assistant").length;
+  const totalTokens = estimateTokens(
+    messages.map(m => typeof m?.content === "string" ? m.content : "").join("")
+  );
+
+  // Build log entry
+  const entry = [
+    `### ${timeStr}`,
+    `- **Topic:** ${topic}`,
+    `- **Messages:** ${userCount} user / ${assistantCount} assistant`,
+    `- **Est. tokens:** ~${totalTokens}`,
+    "",
+  ].join("\n");
+
+  // Append to daily log (create with header if new)
+  if (!fs.existsSync(logFile)) {
+    const header = `# Session Log — ${dateStr}\n\n`;
+    fs.writeFileSync(logFile, header + entry, "utf8");
+  } else {
+    fs.appendFileSync(logFile, entry, "utf8");
+  }
+}
+```
+
+- [ ] **Step 2: Add `sessionLogging` config to `openclaw.plugin.json`**
+
+Add after the `ignorePatterns` property in the config schema:
+
+```json
+      "sessionLogging": {
+        "type": "boolean",
+        "default": true,
+        "description": "Write session summaries to memory/sessions/ daily logs"
+      }
+```
+
+And add corresponding uiHints:
+
+```json
+    "sessionLogging": {
+      "label": "Session logging",
+      "help": "Append session summaries to daily markdown logs"
+    }
+```
+
+- [ ] **Step 3: Call `writeSessionLog` from `agent_end` hook**
+
+In the `agent_end` hook, right before the `const existing = readFile(statePath);` line (around line 324), add:
+
+```javascript
+      // Write session log entry
+      writeSessionLog(ws, messages, config);
+```
+
+- [ ] **Step 4: Verify no syntax errors**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c index.js
+```
+Expected: no output (syntax OK)
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add index.js openclaw.plugin.json
+git commit -m "feat: add session logging to memory/sessions/ daily files (v3.1)"
+```
+
+---
+
+### Task 4: Smart Tail Protection in `before_compaction`
+
+**Files:**
+- Modify: `index.js` (enhance `before_compaction` hook, around line 254)
+- Modify: `openclaw.plugin.json` (add `tailProtectCount` config)
+
+- [ ] **Step 1: Add `tailProtectCount` config to `openclaw.plugin.json`**
+
+Add after the `sessionLogging` property in the config schema:
+
+```json
+      "tailProtectCount": {
+        "type": "number",
+        "default": 3,
+        "description": "Number of recent critical message pairs to protect during compaction"
+      }
+```
+
+And add corresponding uiHints:
+
+```json
+    "tailProtectCount": {
+      "label": "Tail protect count",
+      "help": "Keep N recent user/assistant pairs visible after compaction"
+    }
+```
+
+- [ ] **Step 2: Add `extractTailMessages` helper to `index.js`**
+
+Add after the `writeSessionLog` function:
+
+```javascript
+/**
+ * Extract the last N meaningful user/assistant exchange pairs from messages.
+ * Returns a formatted string for injection into compaction context.
+ */
+function extractTailMessages(messages, count = 3) {
+  if (!messages || messages.length === 0) return null;
+
+  // Walk backwards, collect up to `count` user+assistant pairs
+  const pairs = [];
+  let i = messages.length - 1;
+
+  while (i >= 0 && pairs.length < count) {
+    // Find assistant message
+    while (i >= 0 && messages[i]?.role !== "assistant") i--;
+    if (i < 0) break;
+    const assistantMsg = messages[i];
+    i--;
+
+    // Find preceding user message
+    while (i >= 0 && messages[i]?.role !== "user") i--;
+    if (i < 0) break;
+    const userMsg = messages[i];
+    i--;
+
+    const getText = (msg) => {
+      if (typeof msg?.content === "string") return msg.content;
+      if (Array.isArray(msg?.content)) {
+        return msg.content.filter(b => b?.type === "text").map(b => b.text).join("\n");
+      }
+      return "";
+    };
+
+    const userText = getText(userMsg).trim();
+    const assistantText = getText(assistantMsg).trim();
+
+    // Skip trivial exchanges
+    if (userText.length < 10 && assistantText.length < 20) continue;
+
+    // Token-aware truncation per message
+    const maxPerMsg = 150;
+    const truncMsg = (s) => {
+      if (estimateTokens(s) <= maxPerMsg) return s;
+      let lo = 0, hi = s.length;
+      while (lo < hi) {
+        const mid = (lo + hi + 1) >> 1;
+        if (estimateTokens(s.slice(0, mid)) <= maxPerMsg) lo = mid;
+        else hi = mid - 1;
+      }
+      return s.slice(0, lo) + "...";
+    };
+
+    pairs.unshift({ user: truncMsg(userText), assistant: truncMsg(assistantText) });
+  }
+
+  if (pairs.length === 0) return null;
+
+  const lines = ["=== RECENT EXCHANGE (protected) ==="];
+  for (const p of pairs) {
+    lines.push(`User: ${p.user}`);
+    lines.push(`Assistant: ${p.assistant}`);
+    lines.push("---");
+  }
+  lines.push("=== END RECENT EXCHANGE ===");
+  return lines.join("\n");
+}
+```
+
+- [ ] **Step 3: Enhance `before_compaction` hook to inject tail messages**
+
+Replace the existing `before_compaction` hook body (lines 254-270) with:
+
+```javascript
+    api.on("before_compaction", async (_event, _ctx) => {
+      const ws = _ctx?.workspaceDir;
+      const config = getConfig();
+      const statePath = resolveStatePath(ws);
+      if (!statePath) return;
+
+      const md = readFile(statePath);
+      if (!md) return;
+
+      const snapshot = buildSnapshot(md);
+      if (!snapshot) return;
+
+      log.info?.("[memory-continuity] Injecting state before compaction");
+
+      // Smart tail protection: also inject recent critical messages
+      const tailCount = config.tailProtectCount ?? 3;
+      const messages = _event?.messages;
+      const tail = tailCount > 0 ? extractTailMessages(messages, tailCount) : null;
+
+      const parts = [snapshot];
+      if (tail) {
+        parts.push(tail);
+        log.info?.("[memory-continuity] Tail protection: injected recent exchanges");
+      }
+
+      return {
+        prependSystemContext: parts.join("\n\n"),
+      };
+    }, { priority: 10 });
+```
+
+- [ ] **Step 4: Verify no syntax errors**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c index.js
+```
+Expected: no output (syntax OK)
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add index.js openclaw.plugin.json
+git commit -m "feat: smart tail protection during compaction (v3.1)"
+```
+
+---
+
+### Task 5: `/mc sessions` Command
+
+**Files:**
+- Modify: `mc-plugin/index.js` (add `cmdSessions` function + wire into switch)
+
+- [ ] **Step 1: Add `cmdSessions` handler to `mc-plugin/index.js`**
+
+Add after the `cmdExport` function (before `cmdHelp`, around line 437):
+
+```javascript
+function cmdSessions(args) {
+  const parts = (args || "").trim().split(/\s+/);
+  const agent = parts.find(p => !p.startsWith("-") && !p.startsWith("2")) || "main";
+  const dateArg = parts.find(p => /^\d{4}-\d{2}-\d{2}$/.test(p));
+
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  const sessionsDir = path.join(memDir, "sessions");
+  let files;
+  try { files = fs.readdirSync(sessionsDir).filter(f => f.endsWith(".md")).sort().reverse(); }
+  catch { return `No session logs for "${agent}".`; }
+
+  if (!files.length) return `No session logs for "${agent}".`;
+
+  // If date specified, show that day's log
+  if (dateArg) {
+    const target = `${dateArg}.md`;
+    const content = readFile(path.join(sessionsDir, target));
+    if (!content) return `No session log for ${dateArg}.`;
+    // Truncate to last 50 lines to stay compact
+    const lines = content.split("\n");
+    const shown = lines.length > 50 ? lines.slice(-50) : lines;
+    let out = shown.join("\n");
+    if (lines.length > 50) out = `... (${lines.length - 50} earlier lines omitted)\n\n` + out;
+    return out;
+  }
+
+  // List recent session logs
+  let out = `Session Logs: ${agent} (${files.length} days)\n`;
+  out += "─────────────────────────────\n";
+
+  for (const f of files.slice(0, 14)) {
+    const date = f.replace(".md", "");
+    const content = readFile(path.join(sessionsDir, f));
+    // Count session entries (### HH:MM headers)
+    const sessionCount = content ? (content.match(/^### \d{2}:\d{2}/gm) || []).length : 0;
+    out += `${date}   ${String(sessionCount).padStart(3)} session(s)\n`;
+  }
+
+  if (files.length > 14) out += `\n  ... and ${files.length - 14} more days`;
+  out += `\n\nUse /mc sessions <YYYY-MM-DD> to view a specific day.`;
+  return out.trimEnd();
+}
+```
+
+- [ ] **Step 2: Wire `sessions` into the command switch**
+
+In the switch statement (around line 471), add a new case before `help`:
+
+```javascript
+          case "sessions": text = cmdSessions(subargs || null); break;
+```
+
+- [ ] **Step 3: Update `cmdHelp` to include `sessions`**
+
+Add this line in the help text after the `/mc state --all` line:
+
+```
+/mc sessions [date]     Session logs (daily activity)
+```
+
+- [ ] **Step 4: Verify no syntax errors**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c mc-plugin/index.js
+```
+Expected: no output (syntax OK)
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add mc-plugin/index.js
+git commit -m "feat: add /mc sessions command for daily session logs (v3.1)"
+```
+
+---
+
+### Task 6: Version Bump and Final Verification
+
+**Files:**
+- Modify: `openclaw.plugin.json` (version 3.0.0 → 3.1.0)
+- Modify: `mc-plugin/openclaw.plugin.json` (version if present)
+- Modify: `package.json` (version if present)
+
+- [ ] **Step 1: Bump version in `openclaw.plugin.json` to 3.1.0**
+
+Change `"version": "3.0.0"` to `"version": "3.1.0"`.
+
+- [ ] **Step 2: Bump version in `package.json` to 3.1.0**
+
+Change `"version"` value to `"3.1.0"`.
+
+- [ ] **Step 3: Verify both plugins parse correctly**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c index.js && node -c mc-plugin/index.js && node -e "JSON.parse(require('fs').readFileSync('openclaw.plugin.json','utf8'))" && echo "All OK"
+```
+Expected: `All OK`
+
+- [ ] **Step 4: Commit and tag**
+
+```bash
+git add openclaw.plugin.json package.json
+git commit -m "release: v3.1.0 — short-term memory layer"
+```
+
+- [ ] **Step 5: Push to GitHub**
+
+```bash
+git push
+```
+
+---
+
+## Summary of New Config Keys
+
+| Key | Type | Default | Purpose |
+|-----|------|---------|---------|
+| `ignorePatterns` | `string[]` | `[]` | Regex patterns to skip sessions (cron/subagent) |
+| `sessionLogging` | `boolean` | `true` | Enable daily session log files |
+| `tailProtectCount` | `number` | `3` | Recent exchange pairs to protect during compaction |
+
+## Summary of New/Changed Hooks
+
+| Hook | Change |
+|------|--------|
+| `agent_end` | +session logging, +ignore pattern filtering, +CJK-aware truncation |
+| `before_compaction` | +tail message protection |
+
+## New Command
+
+| Command | Purpose |
+|---------|---------|
+| `/mc sessions [date]` | List daily session logs or view specific day |

docs/superpowers/plans/2026-03-31-v3.2-mid-term-memory.md

@@ -0,0 +1,674 @@
+# v3.2 Mid-Term Memory Layer Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Add layered markdown summaries (daily/weekly), enhanced cross-source search, and automatic tag extraction to the Memory Continuity plugin.
+
+**Architecture:** Three independent features layered on v3.1's session logging. Daily summaries are generated from session logs at `agent_end` when the day changes. Weekly summaries roll up dailies every Monday. Enhanced search extends the existing `/mc search` to cover sessions + summaries with context lines. Auto-tagging scans session entries for `#tag` patterns and maintains a `memory/tags.md` index. All pure markdown, zero dependencies.
+
+**Tech Stack:** Node.js (ES modules), pure filesystem, zero dependencies
+
+---
+
+## File Structure
+
+| File | Action | Responsibility |
+|------|--------|---------------|
+| `index.js` | Modify | Add `generateDailySummary`, `generateWeeklySummary`, call from `agent_end` |
+| `openclaw.plugin.json` | Modify | Add `summaryEnabled` config |
+| `mc-plugin/index.js` | Modify | Enhance `cmdSearch` to cover sessions+summaries, add `/mc tags` and `/mc summary` commands |
+
+---
+
+### Task 1: Daily Summary Generation
+
+**Files:**
+- Modify: `index.js` (add helper + call in agent_end)
+- Modify: `openclaw.plugin.json` (add `summaryEnabled` config)
+
+- [ ] **Step 1: Add `summaryEnabled` config to `openclaw.plugin.json`**
+
+Read `openclaw.plugin.json`. Add after the `tailProtectCount` property in configSchema:
+
+```json
+      "summaryEnabled": {
+        "type": "boolean",
+        "default": true,
+        "description": "Generate daily and weekly summaries from session logs"
+      }
+```
+
+Add corresponding uiHints after the `tailProtectCount` hint:
+
+```json
+    "summaryEnabled": {
+      "label": "Summary generation",
+      "help": "Auto-generate daily/weekly summaries from session logs"
+    }
+```
+
+- [ ] **Step 2: Add `generateDailySummary` helper to `index.js`**
+
+Read `index.js`. Add after the `extractTailMessages` function (ends around line 302), before `extractStateFromMessages`:
+
+```javascript
+/**
+ * Generate a daily summary from the previous day's session log.
+ * Only runs when today differs from the last summary date.
+ * Output: memory/summaries/daily/YYYY-MM-DD.md
+ */
+function generateDailySummary(workspaceDir, config = {}) {
+  if (config.summaryEnabled === false) return;
+
+  const pad = (n) => String(n).padStart(2, "0");
+  const now = new Date();
+  const today = `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}`;
+
+  // Check yesterday's date
+  const yesterday = new Date(now);
+  yesterday.setDate(yesterday.getDate() - 1);
+  const yStr = `${yesterday.getFullYear()}-${pad(yesterday.getMonth() + 1)}-${pad(yesterday.getDate())}`;
+
+  const summaryDir = path.join(workspaceDir, "memory", "summaries", "daily");
+  const summaryFile = path.join(summaryDir, `${yStr}.md`);
+
+  // Skip if summary already exists for yesterday
+  if (fs.existsSync(summaryFile)) return;
+
+  // Read yesterday's session log
+  const sessionFile = path.join(workspaceDir, "memory", "sessions", `${yStr}.md`);
+  const sessionContent = readFile(sessionFile);
+  if (!sessionContent) return; // No sessions yesterday
+
+  // Parse session entries
+  const entries = sessionContent.split(/^### /gm).filter(e => e.trim());
+  if (entries.length === 0) return;
+
+  const topics = [];
+  let totalUser = 0;
+  let totalAssistant = 0;
+  let totalTokens = 0;
+
+  for (const entry of entries) {
+    const topicMatch = entry.match(/\*\*Topic:\*\*\s*(.+)/);
+    const msgMatch = entry.match(/\*\*Messages:\*\*\s*(\d+)\s*user\s*\/\s*(\d+)\s*assistant/);
+    const tokenMatch = entry.match(/\*\*Est\. tokens:\*\*\s*~(\d+)/);
+
+    if (topicMatch) topics.push(topicMatch[1].trim());
+    if (msgMatch) {
+      totalUser += parseInt(msgMatch[1]);
+      totalAssistant += parseInt(msgMatch[2]);
+    }
+    if (tokenMatch) totalTokens += parseInt(tokenMatch[1]);
+  }
+
+  // Build daily summary
+  const summary = [
+    `# Daily Summary — ${yStr}`,
+    "",
+    `**Sessions:** ${entries.length}`,
+    `**Messages:** ${totalUser} user / ${totalAssistant} assistant`,
+    `**Est. tokens:** ~${totalTokens}`,
+    "",
+    "## Topics",
+    ...topics.map((t, i) => `${i + 1}. ${t}`),
+    "",
+  ].join("\n");
+
+  fs.mkdirSync(summaryDir, { recursive: true });
+  fs.writeFileSync(summaryFile, summary, "utf8");
+}
+```
+
+- [ ] **Step 3: Call `generateDailySummary` from `agent_end` hook**
+
+In the `agent_end` hook, right after the `writeSessionLog(ws, messages, config);` line (around line 515), add:
+
+```javascript
+      // Generate daily summary for previous day if needed
+      generateDailySummary(ws, config);
+```
+
+- [ ] **Step 4: Verify no syntax errors**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c index.js
+```
+Expected: no output (syntax OK)
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add index.js openclaw.plugin.json
+git commit -m "feat: auto-generate daily summaries from session logs (v3.2)"
+```
+
+---
+
+### Task 2: Weekly Summary Generation
+
+**Files:**
+- Modify: `index.js` (add `generateWeeklySummary` + call in agent_end)
+
+- [ ] **Step 1: Add `generateWeeklySummary` helper to `index.js`**
+
+Read `index.js`. Add after the `generateDailySummary` function:
+
+```javascript
+/**
+ * Generate a weekly summary by rolling up daily summaries.
+ * Runs on Monday, summarizing the previous week (Mon-Sun).
+ * Output: memory/summaries/weekly/YYYY-Www.md (ISO week number)
+ */
+function generateWeeklySummary(workspaceDir, config = {}) {
+  if (config.summaryEnabled === false) return;
+
+  const now = new Date();
+  // Only run on Mondays
+  if (now.getDay() !== 1) return;
+
+  const pad = (n) => String(n).padStart(2, "0");
+
+  // Calculate previous week's Monday
+  const prevMonday = new Date(now);
+  prevMonday.setDate(prevMonday.getDate() - 7);
+
+  // ISO week number
+  const jan1 = new Date(prevMonday.getFullYear(), 0, 1);
+  const weekNum = Math.ceil(((prevMonday - jan1) / 86400000 + jan1.getDay() + 1) / 7);
+  const weekLabel = `${prevMonday.getFullYear()}-W${pad(weekNum)}`;
+
+  const weeklyDir = path.join(workspaceDir, "memory", "summaries", "weekly");
+  const weeklyFile = path.join(weeklyDir, `${weekLabel}.md`);
+
+  // Skip if already generated
+  if (fs.existsSync(weeklyFile)) return;
+
+  // Collect daily summaries for the 7 days of previous week
+  const dailyDir = path.join(workspaceDir, "memory", "summaries", "daily");
+  const dailies = [];
+  let weekSessions = 0;
+  let weekUser = 0;
+  let weekAssistant = 0;
+  let weekTokens = 0;
+  const allTopics = [];
+
+  for (let d = 0; d < 7; d++) {
+    const day = new Date(prevMonday);
+    day.setDate(day.getDate() + d);
+    const dayStr = `${day.getFullYear()}-${pad(day.getMonth() + 1)}-${pad(day.getDate())}`;
+    const dailyFile = path.join(dailyDir, `${dayStr}.md`);
+    const content = readFile(dailyFile);
+    if (!content) continue;
+
+    dailies.push(dayStr);
+
+    const sessMatch = content.match(/\*\*Sessions:\*\*\s*(\d+)/);
+    const msgMatch = content.match(/\*\*Messages:\*\*\s*(\d+)\s*user\s*\/\s*(\d+)\s*assistant/);
+    const tokenMatch = content.match(/\*\*Est\. tokens:\*\*\s*~(\d+)/);
+
+    if (sessMatch) weekSessions += parseInt(sessMatch[1]);
+    if (msgMatch) {
+      weekUser += parseInt(msgMatch[1]);
+      weekAssistant += parseInt(msgMatch[2]);
+    }
+    if (tokenMatch) weekTokens += parseInt(tokenMatch[1]);
+
+    // Extract topics
+    const topicSection = content.split("## Topics")[1];
+    if (topicSection) {
+      const topics = topicSection.match(/^\d+\.\s+(.+)$/gm);
+      if (topics) allTopics.push(...topics.map(t => t.replace(/^\d+\.\s+/, "").trim()));
+    }
+  }
+
+  if (dailies.length === 0) return;
+
+  // Deduplicate topics (keep first occurrence)
+  const seen = new Set();
+  const uniqueTopics = allTopics.filter(t => {
+    const key = t.toLowerCase().slice(0, 50);
+    if (seen.has(key)) return false;
+    seen.add(key);
+    return true;
+  });
+
+  const summary = [
+    `# Weekly Summary — ${weekLabel}`,
+    `> ${dailies[0]} to ${dailies[dailies.length - 1]}`,
+    "",
+    `**Active days:** ${dailies.length}/7`,
+    `**Total sessions:** ${weekSessions}`,
+    `**Total messages:** ${weekUser} user / ${weekAssistant} assistant`,
+    `**Est. total tokens:** ~${weekTokens}`,
+    "",
+    "## Key Topics",
+    ...uniqueTopics.slice(0, 20).map((t, i) => `${i + 1}. ${t}`),
+    "",
+  ].join("\n");
+
+  fs.mkdirSync(weeklyDir, { recursive: true });
+  fs.writeFileSync(weeklyFile, summary, "utf8");
+}
+```
+
+- [ ] **Step 2: Call `generateWeeklySummary` from `agent_end` hook**
+
+Right after the `generateDailySummary(ws, config);` line, add:
+
+```javascript
+      generateWeeklySummary(ws, config);
+```
+
+- [ ] **Step 3: Verify no syntax errors**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c index.js
+```
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add index.js
+git commit -m "feat: auto-generate weekly summaries from daily rollups (v3.2)"
+```
+
+---
+
+### Task 3: Auto-Tagging — Extract `#tag` from Session Logs
+
+**Files:**
+- Modify: `index.js` (add `updateTagIndex` helper + call in `writeSessionLog`)
+
+- [ ] **Step 1: Add `updateTagIndex` helper to `index.js`**
+
+Read `index.js`. Add after the `generateWeeklySummary` function:
+
+```javascript
+/**
+ * Extract #tags from a session topic and update the tag index.
+ * Tags file: memory/tags.md — simple markdown index mapping tags to dates.
+ */
+function updateTagIndex(workspaceDir, topic, dateStr) {
+  if (!topic) return;
+
+  // Extract #tags (word chars + hyphens after #)
+  const tags = topic.match(/#[\w-]+/g);
+  if (!tags || tags.length === 0) return;
+
+  const tagsFile = path.join(workspaceDir, "memory", "tags.md");
+  let existing = readFile(tagsFile) || "# Tag Index\n\n";
+
+  for (const tag of tags) {
+    const normalizedTag = tag.toLowerCase();
+    // Check if this tag+date combo already exists
+    if (existing.includes(`${normalizedTag}`) && existing.includes(dateStr)) continue;
+
+    // Find or create tag section
+    const tagHeader = `## ${normalizedTag}`;
+    if (existing.includes(tagHeader)) {
+      // Append date to existing tag section
+      existing = existing.replace(
+        tagHeader,
+        `${tagHeader}\n- ${dateStr}`
+      );
+    } else {
+      // Add new tag section
+      existing += `${tagHeader}\n- ${dateStr}\n\n`;
+    }
+  }
+
+  writeFile(tagsFile, existing);
+}
+```
+
+- [ ] **Step 2: Call `updateTagIndex` from `writeSessionLog`**
+
+In the `writeSessionLog` function, right after the `fs.appendFileSync(logFile, prefix + entry, "utf8");` line (the last line of the function), add:
+
+```javascript
+  // Extract and index #tags from the topic
+  updateTagIndex(workspaceDir, topic, dateStr);
+```
+
+- [ ] **Step 3: Verify no syntax errors**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c index.js
+```
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add index.js
+git commit -m "feat: auto-extract #tags from sessions to memory/tags.md (v3.2)"
+```
+
+---
+
+### Task 4: Enhanced Search — Cross Sessions + Summaries
+
+**Files:**
+- Modify: `mc-plugin/index.js` (enhance `cmdSearch`)
+
+- [ ] **Step 1: Enhance `cmdSearch` to search sessions and summaries**
+
+Read `mc-plugin/index.js`. Replace the entire `cmdSearch` function (lines 220-279) with:
+
+```javascript
+function cmdSearch(args) {
+  if (!args) return "Usage: /mc search <keyword> [agent]\nSearches state, archives, sessions, and summaries.";
+
+  const parts = args.trim().split(/\s+/);
+  let keyword, agent;
+  const agents = discoverAgents();
+  const agentNames = new Set(agents.map(a => a.name));
+
+  if (parts.length > 1 && agentNames.has(parts[parts.length - 1])) {
+    agent = parts.pop();
+    keyword = parts.join(" ");
+  } else {
+    keyword = parts.join(" ");
+    agent = null;
+  }
+
+  const re = new RegExp(keyword, "gi");
+  const results = [];
+
+  const searchAgents = agent ? [{ name: agent, memDir: resolveMemDir(agent) }] : agents;
+
+  for (const { name, memDir } of searchAgents) {
+    if (!memDir) continue;
+
+    // 1. Search current state
+    const state = readFile(path.join(memDir, "CURRENT_STATE.md"));
+    if (state && re.test(state)) {
+      re.lastIndex = 0;
+      const lines = state.split("\n").filter(l => re.test(l));
+      results.push({ agent: name, source: "CURRENT_STATE", type: "state", matches: lines.slice(0, 3) });
+    }
+
+    // 2. Search archives (most recent 30)
+    const archiveDir = path.join(memDir, "session_archive");
+    try {
+      const files = fs.readdirSync(archiveDir).filter(f => f.endsWith(".md")).sort().reverse();
+      for (const f of files.slice(0, 30)) {
+        re.lastIndex = 0;
+        const content = readFile(path.join(archiveDir, f));
+        if (content && re.test(content)) {
+          re.lastIndex = 0;
+          const lines = content.split("\n").filter(l => re.test(l));
+          results.push({ agent: name, source: f.replace(".md", ""), type: "archive", matches: lines.slice(0, 2) });
+        }
+      }
+    } catch {}
+
+    // 3. Search session logs (most recent 14 days)
+    const sessionsDir = path.join(memDir, "sessions");
+    try {
+      const files = fs.readdirSync(sessionsDir).filter(f => f.endsWith(".md")).sort().reverse();
+      for (const f of files.slice(0, 14)) {
+        re.lastIndex = 0;
+        const content = readFile(path.join(sessionsDir, f));
+        if (content && re.test(content)) {
+          re.lastIndex = 0;
+          const lines = content.split("\n").filter(l => re.test(l));
+          results.push({ agent: name, source: f.replace(".md", ""), type: "session", matches: lines.slice(0, 2) });
+        }
+      }
+    } catch {}
+
+    // 4. Search summaries (daily + weekly)
+    for (const sub of ["daily", "weekly"]) {
+      const sumDir = path.join(memDir, "summaries", sub);
+      try {
+        const files = fs.readdirSync(sumDir).filter(f => f.endsWith(".md")).sort().reverse();
+        for (const f of files.slice(0, 10)) {
+          re.lastIndex = 0;
+          const content = readFile(path.join(sumDir, f));
+          if (content && re.test(content)) {
+            re.lastIndex = 0;
+            const lines = content.split("\n").filter(l => re.test(l));
+            results.push({ agent: name, source: f.replace(".md", ""), type: sub, matches: lines.slice(0, 2) });
+          }
+        }
+      } catch {}
+    }
+  }
+
+  if (!results.length) return `No matches for "${keyword}".`;
+
+  // Group by type for clearer output
+  let out = `Search: "${keyword}" (${results.length} hits)\n`;
+  out += "─────────────────────────────\n";
+
+  const typeOrder = ["state", "archive", "session", "daily", "weekly"];
+  const typeLabels = { state: "State", archive: "Archive", session: "Session", daily: "Daily", weekly: "Weekly" };
+
+  for (const type of typeOrder) {
+    const group = results.filter(r => r.type === type);
+    if (group.length === 0) continue;
+
+    out += `\n[${typeLabels[type]}]\n`;
+    for (const r of group.slice(0, 5)) {
+      out += `  ${r.agent}/${r.source}\n`;
+      for (const line of r.matches) {
+        out += `    ${truncate(line.trim(), 75)}\n`;
+      }
+    }
+    if (group.length > 5) out += `  ... +${group.length - 5} more\n`;
+  }
+
+  return out.trimEnd();
+}
+```
+
+- [ ] **Step 2: Verify no syntax errors**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c mc-plugin/index.js
+```
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add mc-plugin/index.js
+git commit -m "feat: enhanced search across sessions and summaries (v3.2)"
+```
+
+---
+
+### Task 5: `/mc tags` and `/mc summary` Commands
+
+**Files:**
+- Modify: `mc-plugin/index.js` (add two command handlers + wire switch + update help)
+
+- [ ] **Step 1: Add `cmdTags` handler to `mc-plugin/index.js`**
+
+Read `mc-plugin/index.js`. Add before the `cmdHelp` function:
+
+```javascript
+function cmdTags(args) {
+  const agent = args || "main";
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  const tagsFile = path.join(memDir, "tags.md");
+  const content = readFile(tagsFile);
+  if (!content) return `No tags for "${agent}".`;
+
+  // Parse tags and their date counts
+  const tagSections = content.split(/^## /gm).filter(s => s.trim());
+  if (tagSections.length === 0) return `No tags for "${agent}".`;
+
+  let out = `Tags: ${agent} (${tagSections.length} tags)\n`;
+  out += "─────────────────────────────\n";
+
+  const tags = [];
+  for (const section of tagSections) {
+    const lines = section.trim().split("\n");
+    const tag = lines[0].trim();
+    if (!tag.startsWith("#")) continue;
+    const dates = lines.filter(l => l.startsWith("- "));
+    tags.push({ tag, count: dates.length, latest: dates[0]?.replace("- ", "") || "?" });
+  }
+
+  // Sort by count descending
+  tags.sort((a, b) => b.count - a.count);
+
+  for (const { tag, count, latest } of tags.slice(0, 30)) {
+    out += `${tag.padEnd(25)} ${String(count).padStart(3)} days   latest: ${latest}\n`;
+  }
+
+  if (tags.length > 30) out += `\n  ... and ${tags.length - 30} more tags`;
+  return out.trimEnd();
+}
+```
+
+- [ ] **Step 2: Add `cmdSummary` handler**
+
+Add after `cmdTags`:
+
+```javascript
+function cmdSummary(args) {
+  const parts = (args || "").trim().split(/\s+/);
+  const agent = parts.find(p => !p.startsWith("-") && !/^\d{4}/.test(p) && p !== "daily" && p !== "weekly") || "main";
+  const typeArg = parts.find(p => p === "daily" || p === "weekly");
+  const dateArg = parts.find(p => /^\d{4}/.test(p));
+
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  // If specific date given, show that summary
+  if (dateArg) {
+    const type = typeArg || (dateArg.includes("W") ? "weekly" : "daily");
+    const sumFile = path.join(memDir, "summaries", type, `${dateArg}.md`);
+    const content = readFile(sumFile);
+    if (!content) return `No ${type} summary for ${dateArg}.`;
+    return content;
+  }
+
+  // List available summaries
+  const types = typeArg ? [typeArg] : ["daily", "weekly"];
+  let out = `Summaries: ${agent}\n`;
+  out += "─────────────────────────────\n";
+
+  for (const type of types) {
+    const sumDir = path.join(memDir, "summaries", type);
+    let files;
+    try { files = fs.readdirSync(sumDir).filter(f => f.endsWith(".md")).sort().reverse(); }
+    catch { continue; }
+
+    if (files.length === 0) continue;
+
+    out += `\n[${type.charAt(0).toUpperCase() + type.slice(1)}] (${files.length})\n`;
+    for (const f of files.slice(0, 10)) {
+      const name = f.replace(".md", "");
+      const content = readFile(path.join(sumDir, f));
+      const sessMatch = content?.match(/\*\*(?:Total s|S)essions:\*\*\s*(\d+)/);
+      const sessions = sessMatch ? sessMatch[1] : "?";
+      out += `  ${name}   ${sessions} session(s)\n`;
+    }
+    if (files.length > 10) out += `  ... +${files.length - 10} more\n`;
+  }
+
+  out += `\nUse /mc summary <YYYY-MM-DD> or /mc summary <YYYY-Www> to view details.`;
+  return out.trimEnd();
+}
+```
+
+- [ ] **Step 3: Wire `tags` and `summary` into the command switch**
+
+In the switch statement, add before the `help` case:
+
+```javascript
+          case "tags":     text = cmdTags(subargs || null); break;
+          case "summary":  text = cmdSummary(subargs || null); break;
+```
+
+- [ ] **Step 4: Update `cmdHelp` to include new commands**
+
+Add these lines after `/mc sessions [date]`:
+
+```
+/mc summary [daily|weekly] List or view summaries
+/mc tags [agent]          View tag index
+```
+
+- [ ] **Step 5: Verify no syntax errors**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c mc-plugin/index.js
+```
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add mc-plugin/index.js
+git commit -m "feat: add /mc tags and /mc summary commands (v3.2)"
+```
+
+---
+
+### Task 6: Version Bump and Final Verification
+
+**Files:**
+- Modify: `openclaw.plugin.json` (version 3.1.0 → 3.2.0)
+- Modify: `package.json` (version 3.1.0 → 3.2.0)
+
+- [ ] **Step 1: Bump version in both files to 3.2.0**
+
+Change `"version": "3.1.0"` to `"version": "3.2.0"` in both `openclaw.plugin.json` and `package.json`.
+
+- [ ] **Step 2: Verify all files parse correctly**
+
+Run:
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity && node -c index.js && node -c mc-plugin/index.js && node -e "JSON.parse(require('fs').readFileSync('openclaw.plugin.json','utf8'))" && echo "All OK"
+```
+Expected: `All OK`
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add openclaw.plugin.json package.json
+git commit -m "release: v3.2.0 — mid-term memory layer"
+```
+
+- [ ] **Step 4: Push to GitHub**
+
+```bash
+git push
+```
+
+---
+
+## Summary of New Features
+
+| Feature | Files | Description |
+|---------|-------|-------------|
+| Daily summaries | `memory/summaries/daily/YYYY-MM-DD.md` | Auto-generated from previous day's session log |
+| Weekly summaries | `memory/summaries/weekly/YYYY-Www.md` | Rolls up daily summaries every Monday |
+| Auto-tagging | `memory/tags.md` | Extracts `#tag` from session topics, maintains index |
+| Enhanced search | `/mc search` | Now covers state + archives + sessions + summaries, grouped by type |
+| `/mc summary` | mc-plugin | List/view daily and weekly summaries |
+| `/mc tags` | mc-plugin | View tag index with counts and latest dates |
+
+## New Config Keys
+
+| Key | Type | Default | Purpose |
+|-----|------|---------|---------|
+| `summaryEnabled` | `boolean` | `true` | Enable/disable summary generation |
+
+## New Commands
+
+| Command | Purpose |
+|---------|---------|
+| `/mc summary [daily\|weekly]` | List summaries or view specific one |
+| `/mc summary <date>` | View specific daily/weekly summary |
+| `/mc tags [agent]` | View tag index |

docs/superpowers/plans/2026-03-31-v4.0-ecosystem-integration.md

@@ -0,0 +1,516 @@
+# Phase 4 — Ecosystem Integration (v4.0) Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Package Memory Continuity for OpenClaw marketplace publishing, declare complementary positioning with lossless-claw, and expose a programmatic skill interface so other plugins can call `/mc recall`.
+
+**Architecture:** Three independent additions — (1) marketplace metadata in manifests + README update, (2) interop declaration via `openclaw.plugin.json` `interop` field and docs, (3) a new `api.exposeService()` call in the lifecycle plugin that other plugins can query for recall results without going through the slash command.
+
+**Tech Stack:** Node.js ESM, OpenClaw plugin API (`api.exposeService`, `api.registerCommand`), markdown files, zero external deps.
+
+---
+
+## File Structure
+
+| Action | File | Responsibility |
+|--------|------|----------------|
+| Modify | `openclaw.plugin.json` | Add marketplace metadata fields (author, license, icon, category, interop) |
+| Modify | `package.json` | Bump to 4.0.0, add marketplace fields |
+| Modify | `mc-plugin/package.json` | Bump to 2.0.0 |
+| Modify | `mc-plugin/openclaw.plugin.json` | Bump to 2.0.0, add marketplace category |
+| Modify | `index.js` | Add `api.exposeService("mc:recall", ...)` in `register()` |
+| Modify | `README.md` | Update version, add marketplace install section, interop docs, skill API docs |
+| Create | `MARKETPLACE.md` | Marketplace listing long description (separate from README for marketplace scraping) |
+
+---
+
+### Task 1: Marketplace Metadata for Lifecycle Plugin
+
+**Files:**
+- Modify: `openclaw.plugin.json`
+- Modify: `package.json`
+
+The OpenClaw `plugins install` command supports `--marketplace <source>` and `openclaw plugins marketplace list <source>`. The manifest needs enriched metadata for discoverability.
+
+- [ ] **Step 1: Add marketplace fields to `openclaw.plugin.json`**
+
+Open `openclaw.plugin.json` and add the following fields alongside the existing content:
+
+```json
+{
+  "id": "memory-continuity",
+  "name": "Memory Continuity",
+  "description": "Preserves working state across /new, reset, compaction, and gateway restarts via a simple markdown checkpoint file.",
+  "version": "4.0.0",
+  "author": {
+    "name": "dtzp555-max",
+    "url": "https://github.com/dtzp555-max"
+  },
+  "license": "MIT",
+  "repository": "https://github.com/dtzp555-max/memory-continuity",
+  "category": "memory",
+  "tags": ["memory", "continuity", "state", "recovery", "markdown", "zero-dependency"],
+  "icon": "brain",
+  "minOpenClawVersion": "2026.3.0",
+  "source": "https://github.com/dtzp555-max/memory-continuity",
+  "configSchema": { ... existing configSchema unchanged ... },
+  "uiHints": { ... existing uiHints unchanged ... }
+}
+```
+
+Key additions:
+- `author` — object with name and URL
+- `license` — MIT
+- `category` — "memory" (standard marketplace category)
+- `tags` — array for search/filter
+- `icon` — emoji-name for UI display
+- `minOpenClawVersion` — minimum compatible version
+
+- [ ] **Step 2: Update `package.json` to v4.0.0**
+
+```json
+{
+  "name": "memory-continuity",
+  "version": "4.0.0",
+  "description": "Zero-dependency memory continuity for OpenClaw — plain markdown, lifecycle hooks, no vector DB.",
+  "main": "index.js",
+  "type": "module",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/dtzp555-max/memory-continuity.git"
+  },
+  "keywords": ["openclaw", "plugin", "memory", "continuity", "state", "recovery", "markdown"],
+  "author": "dtzp555-max",
+  "license": "MIT",
+  "openclaw": {
+    "type": "plugin",
+    "id": "memory-continuity",
+    "pluginManifest": "openclaw.plugin.json"
+  }
+}
+```
+
+- [ ] **Step 3: Verify plugin still loads**
+
+```bash
+cd ~/.openclaw/projects/memory-continuity
+node -e "import('./index.js').then(m => console.log('OK:', typeof m.default))"
+```
+
+Expected: `OK: object`
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add openclaw.plugin.json package.json
+git commit -m "feat(marketplace): add marketplace metadata to lifecycle plugin manifest"
+```
+
+---
+
+### Task 2: Marketplace Metadata for MC Commands Plugin
+
+**Files:**
+- Modify: `mc-plugin/openclaw.plugin.json`
+- Modify: `mc-plugin/package.json`
+
+- [ ] **Step 1: Add marketplace fields to `mc-plugin/openclaw.plugin.json`**
+
+```json
+{
+  "id": "mc",
+  "name": "Memory Continuity Commands",
+  "description": "Slash commands for Memory Continuity — /mc state, /mc history, /mc search, /mc recall, /mc settings, etc.",
+  "version": "2.0.0",
+  "author": {
+    "name": "dtzp555-max",
+    "url": "https://github.com/dtzp555-max"
+  },
+  "license": "MIT",
+  "category": "commands",
+  "tags": ["memory", "commands", "search", "recall"],
+  "icon": "terminal",
+  "requires": ["memory-continuity"],
+  "configSchema": {
+    "type": "object",
+    "additionalProperties": false,
+    "properties": {
+      "memoryDir": {
+        "type": "string",
+        "default": "",
+        "description": "Override memory directory path (auto-detected from workspace if empty)"
+      }
+    }
+  }
+}
+```
+
+Key addition: `requires` — declares dependency on the `memory-continuity` lifecycle plugin.
+
+- [ ] **Step 2: Bump `mc-plugin/package.json` to 2.0.0**
+
+```json
+{
+  "name": "mc-plugin",
+  "version": "2.0.0",
+  "description": "Slash commands for Memory Continuity — /mc state, /mc history, /mc search, etc.",
+  "main": "index.js",
+  "type": "module",
+  "keywords": ["openclaw", "plugin", "memory", "continuity", "commands"],
+  "license": "MIT",
+  "openclaw": {
+    "type": "plugin",
+    "id": "mc",
+    "pluginManifest": "openclaw.plugin.json"
+  }
+}
+```
+
+- [ ] **Step 3: Verify mc-plugin still loads**
+
+```bash
+cd ~/.openclaw/projects/memory-continuity/mc-plugin
+node -e "import('./index.js').then(m => console.log('OK:', typeof m.default))"
+```
+
+Expected: `OK: function`
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add mc-plugin/openclaw.plugin.json mc-plugin/package.json
+git commit -m "feat(marketplace): add marketplace metadata to mc-plugin manifest"
+```
+
+---
+
+### Task 3: lossless-claw Interop Declaration
+
+**Files:**
+- Modify: `openclaw.plugin.json` (add `interop` field)
+- Create: `MARKETPLACE.md`
+
+The key design point: MC uses lifecycle hooks (not the `contextEngine` slot), so it coexists with lossless-claw. MC handles working-state recovery; lossless-claw handles full context compression. They complement each other.
+
+- [ ] **Step 1: Add `interop` field to `openclaw.plugin.json`**
+
+Add the following field to the root of the manifest (after `minOpenClawVersion`):
+
+```json
+  "interop": {
+    "complements": [
+      {
+        "id": "lossless-claw",
+        "reason": "MC uses lifecycle hooks for working-state recovery; lossless-claw uses the contextEngine slot for lossless context compression. They occupy different plugin slots and serve different purposes — install both for best results."
+      }
+    ],
+    "conflicts": [],
+    "slot": "hooks-only",
+    "slotNote": "Does NOT occupy the contextEngine slot. Safe to run alongside any context engine."
+  }
+```
+
+- [ ] **Step 2: Create `MARKETPLACE.md`**
+
+This file provides the long-form marketplace listing description (separate from README which is for developers).
+
+```markdown
+# Memory Continuity — Marketplace Listing
+
+## What it does
+
+Memory Continuity is a **zero-dependency lifecycle plugin** that preserves your working state across session resets, compaction, and gateway restarts. It answers one question:
+
+> What were we doing, where did we stop, and what should happen next?
+
+## Key features
+
+- **Automatic state checkpoint** — saves working state at session end, before `/new`, and before compaction
+- **Session logging** — daily markdown logs of all sessions with topic, message count, and token estimates
+- **Layered summaries** — daily summaries roll up into weekly summaries
+- **Tag extraction** — `#tag` patterns auto-indexed in `memory/tags.md`
+- **Relevance injection** — injects related history at session start based on keyword matching
+- **Memory decay** — old archives move to cold storage after configurable days
+- **CJK-aware** — proper token estimation for Chinese/Japanese/Korean text
+- **Search & recall** — `/mc search` and `/mc recall` for cross-memory search
+
+## Why this plugin?
+
+| Feature | Memory Continuity | Other memory plugins |
+|---------|------------------|---------------------|
+| Dependencies | Zero | SQLite, Chroma, APIs |
+| Data format | Plain markdown | Proprietary DB |
+| Backup strategy | `cp` / `scp` | DB export |
+| Migration | Copy files | Re-index |
+| contextEngine slot | Not used | Often required |
+| Works with lossless-claw | Yes | Varies |
+
+## Works with lossless-claw
+
+MC intentionally does NOT use the `contextEngine` slot. It runs via lifecycle hooks only. This means you can install both:
+
+- **lossless-claw** — lossless context compression (contextEngine slot)
+- **memory-continuity** — working-state recovery (hooks only)
+
+They serve complementary purposes and never conflict.
+
+## Install
+
+```bash
+openclaw plugins install https://github.com/dtzp555-max/memory-continuity
+```
+
+## Configuration
+
+All settings are optional with sensible defaults. See `openclaw plugins inspect memory-continuity` for the full config schema.
+```
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add openclaw.plugin.json MARKETPLACE.md
+git commit -m "feat(interop): declare lossless-claw complementary positioning + marketplace listing"
+```
+
+---
+
+### Task 4: Programmatic Skill Interface — `mc:recall` Service
+
+**Files:**
+- Modify: `index.js` (add `api.exposeService` in `register()`)
+
+The goal: other plugins can programmatically call `api.getService("mc:recall")` to get recall results as structured data, without parsing slash command output.
+
+- [ ] **Step 1: Add the `findRelevantHistory` re-export as a service**
+
+At the end of the `register(api)` function in `index.js`, before the final log line, add:
+
+```javascript
+    // ------------------------------------------------------------------
+    // SERVICE: mc:recall — programmatic interface for other plugins
+    // ------------------------------------------------------------------
+    if (typeof api.exposeService === "function") {
+      api.exposeService("mc:recall", {
+        description: "Search memory history by topic keywords. Returns scored results.",
+
+        /**
+         * @param {Object} params
+         * @param {string} params.topic - Keywords to search for
+         * @param {number} [params.maxItems=5] - Maximum results to return
+         * @param {string} [params.format="structured"] - "structured" returns array of objects, "text" returns formatted string
+         * @returns {{ results: Array<{ date: string, type: string, score: number, summary: string }>, total: number }}
+         */
+        async handler(params, ctx) {
+          const topic = params?.topic;
+          if (!topic || typeof topic !== "string") {
+            return { error: "topic (string) is required", results: [], total: 0 };
+          }
+
+          const ws = ctx?.workspaceDir;
+          if (!ws) {
+            return { error: "no workspace context", results: [], total: 0 };
+          }
+
+          const maxItems = Math.min(params?.maxItems ?? 5, 20);
+
+          // Reuse the internal findRelevantHistory function
+          const textResult = findRelevantHistory(ws, topic, maxItems);
+
+          if (!textResult) {
+            return { results: [], total: 0 };
+          }
+
+          // For "text" format, return the raw string (same as before_agent_start injection)
+          if (params?.format === "text") {
+            return { text: textResult, total: 1 };
+          }
+
+          // For "structured" format, parse the result into objects
+          const lines = textResult.split("\n").filter(l => l.startsWith("["));
+          const results = lines.map(line => {
+            const dateMatch = line.match(/^\[([^\]]+)\]/);
+            const summary = line.replace(/^\[[^\]]+\]\s*/, "").trim();
+            return {
+              date: dateMatch?.[1] || "unknown",
+              type: "history",
+              score: 0,
+              summary,
+            };
+          });
+
+          return { results, total: results.length };
+        },
+      });
+
+      log.info?.("[memory-continuity] Exposed mc:recall service for inter-plugin use");
+    }
+```
+
+- [ ] **Step 2: Verify plugin still loads with the service**
+
+```bash
+cd ~/.openclaw/projects/memory-continuity
+node -e "import('./index.js').then(m => console.log('OK:', typeof m.default, typeof m.default.register))"
+```
+
+Expected: `OK: object function`
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add index.js
+git commit -m "feat(skill-api): expose mc:recall as programmatic service for inter-plugin use"
+```
+
+---
+
+### Task 5: README Update
+
+**Files:**
+- Modify: `README.md`
+
+- [ ] **Step 1: Update README header and install section**
+
+Update the version line at the top:
+
+```markdown
+**Current release:** `v4.0.0`
+```
+
+Add after the existing "Quick Start" / "Install" section:
+
+```markdown
+### Marketplace Install (recommended)
+
+```bash
+openclaw plugins install https://github.com/dtzp555-max/memory-continuity
+```
+
+### Works with lossless-claw
+
+This plugin does **not** use the `contextEngine` slot. It runs via lifecycle hooks only, so it coexists perfectly with lossless-claw or any other context engine:
+
+- **lossless-claw** = lossless context compression (contextEngine slot)
+- **memory-continuity** = working-state recovery (hooks only)
+
+Install both for the best experience.
+
+### Programmatic API
+
+Other plugins can call MC's recall function programmatically:
+
+```javascript
+// In another plugin's register() function:
+const recall = api.getService("mc:recall");
+if (recall) {
+  const result = await recall.handler(
+    { topic: "deployment issues", maxItems: 3 },
+    ctx
+  );
+  // result.results = [{ date, type, score, summary }, ...]
+}
+```
+```
+
+- [ ] **Step 2: Commit**
+
+```bash
+git add README.md
+git commit -m "docs: update README with marketplace install, interop, and skill API sections"
+```
+
+---
+
+### Task 6: Final Version Bump + Verification
+
+**Files:**
+- Verify: all modified files
+
+- [ ] **Step 1: Verify all version numbers match**
+
+```bash
+grep '"version"' openclaw.plugin.json package.json mc-plugin/openclaw.plugin.json mc-plugin/package.json
+```
+
+Expected:
+- `openclaw.plugin.json` → `"4.0.0"`
+- `package.json` → `"4.0.0"`
+- `mc-plugin/openclaw.plugin.json` → `"2.0.0"`
+- `mc-plugin/package.json` → `"2.0.0"`
+
+- [ ] **Step 2: Verify both plugins load**
+
+```bash
+cd ~/.openclaw/projects/memory-continuity
+node -e "import('./index.js').then(m => console.log('lifecycle:', typeof m.default))"
+node -e "import('./mc-plugin/index.js').then(m => console.log('mc-plugin:', typeof m.default))"
+```
+
+Expected:
+```
+lifecycle: object
+mc-plugin: function
+```
+
+- [ ] **Step 3: Copy to extensions and restart gateway**
+
+```bash
+cp index.js package.json openclaw.plugin.json ~/.openclaw/extensions/memory-continuity/
+cp mc-plugin/index.js mc-plugin/package.json mc-plugin/openclaw.plugin.json ~/.openclaw/extensions/mc/ 2>/dev/null
+```
+
+- [ ] **Step 4: Verify with `openclaw plugins inspect`**
+
+```bash
+openclaw plugins inspect memory-continuity
+```
+
+Expected: shows `Version: 4.0.0` and all 5 hooks.
+
+- [ ] **Step 5: Final commit + tag**
+
+```bash
+git add -A
+git commit -m "release: v4.0.0 — ecosystem integration (marketplace, interop, skill API)"
+git tag v4.0.0
+git push origin main --tags
+```
+
+---
+
+### Task 7: Deploy to All 3 Servers
+
+**Files:** None (deployment only)
+
+- [ ] **Step 1: Deploy to Cloud (152.67.121.35)**
+
+```bash
+scp index.js package.json openclaw.plugin.json MARKETPLACE.md opc@152.67.121.35:~/.openclaw/extensions/memory-continuity/
+scp mc-plugin/index.js mc-plugin/package.json mc-plugin/openclaw.plugin.json opc@152.67.121.35:~/.openclaw/extensions/mc/
+ssh opc@152.67.121.35 "pkill -f 'openclaw.*gateway'; sleep 1; nohup openclaw gateway start > /dev/null 2>&1 &"
+```
+
+- [ ] **Step 2: Deploy to PI (172.16.2.232)**
+
+```bash
+scp index.js package.json openclaw.plugin.json MARKETPLACE.md administrator@172.16.2.232:~/.openclaw/extensions/memory-continuity/
+scp mc-plugin/index.js mc-plugin/package.json mc-plugin/openclaw.plugin.json administrator@172.16.2.232:~/.openclaw/extensions/mc/
+ssh administrator@172.16.2.232 "pkill -f 'openclaw.*gateway'; sleep 1; nohup openclaw gateway start > /dev/null 2>&1 &"
+```
+
+- [ ] **Step 3: Restart Mac gateway**
+
+```bash
+cp index.js package.json openclaw.plugin.json ~/.openclaw/extensions/memory-continuity/
+pkill -f 'openclaw.*gateway'; sleep 1; nohup openclaw gateway start > /dev/null 2>&1 &
+```
+
+- [ ] **Step 4: Verify all 3 servers**
+
+```bash
+grep version ~/.openclaw/extensions/memory-continuity/package.json
+ssh opc@152.67.121.35 "grep version ~/.openclaw/extensions/memory-continuity/package.json"
+ssh administrator@172.16.2.232 "grep version ~/.openclaw/extensions/memory-continuity/package.json"
+```
+
+Expected: all show `"version": "4.0.0"`.

docs/superpowers/plans/2026-03-31-v5.0-subagent-support.md

@@ -0,0 +1,556 @@
+# Phase 5 — Conservative Subagent Support (v5.0) Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Enable working-state continuity across parent/child agent boundaries — parent seeds child with structured context, child recovers unsurfaced results back to parent.
+
+**Architecture:** Two new lifecycle hooks added to the existing plugin. (1) Enhance `before_agent_start` to detect forked child sessions and inject the parent's CURRENT_STATE.md as a structured seed. (2) Add a new `subagent_ended` hook that reads the child's workspace CURRENT_STATE.md and merges unsurfaced results into the parent's state. Both features are conservative — they degrade gracefully when context is unavailable and never overwrite parent state destructively.
+
+**Tech Stack:** Node.js ESM, OpenClaw plugin lifecycle hooks (`before_agent_start`, `subagent_ended`), filesystem-based state passing (cross-workspace read), zero external dependencies.
+
+**Research Findings (constraints):**
+- `subagent_ended` event provides: `{ targetSessionKey, reason, outcome, error }` and context `{ childSessionKey, requesterSessionKey }`
+- No pre-spawn hook exists — parent seeding happens via `before_agent_start` on the child side
+- Workspaces are fully isolated — each agent has its own `memory/` directory
+- Session key format: `agent:<agentId>:subagent:<uuid>` — parseable to extract `agentId`
+- Agent workspace is resolvable via config: `agents.list[].workspace` or default `~/.openclaw/workspace/main`
+- `isSubagentSessionKey()` and `parseAgentSessionKey()` are runtime utilities (not available to plugins directly — must parse manually)
+
+---
+
+## File Structure
+
+| Action | File | Responsibility |
+|--------|------|----------------|
+| Modify | `index.js` | Add parent-seed logic to `before_agent_start`, add new `subagent_ended` hook, add helper functions |
+| Modify | `openclaw.plugin.json` | Bump to 5.0.0, add new config keys |
+| Modify | `package.json` | Bump to 5.0.0 |
+
+---
+
+### Task 1: Add Workspace Resolution Helpers
+
+**Files:**
+- Modify: `index.js` (helpers section, before plugin definition)
+
+Two new helper functions are needed: one to detect if the current session is a subagent, and one to resolve a workspace directory from an agent ID.
+
+- [ ] **Step 1: Add `isSubagentSession` helper**
+
+In `index.js`, after the existing `extractStateFromMessages` function (around line 709) and before the `// Plugin Definition` comment, add:
+
+```javascript
+/**
+ * Detect if the current session is a subagent by checking the session key format.
+ * Subagent session keys follow: agent:<agentId>:subagent:<uuid>
+ */
+function isSubagentSession(ctx) {
+  const key = ctx?.sessionKey || ctx?.SessionKey || "";
+  return /^agent:[^:]+:subagent:/.test(key);
+}
+
+/**
+ * Extract the parent agent ID from a subagent session key.
+ * Session key format: agent:<parentAgentId>:subagent:<uuid>
+ * Returns null if not a subagent key.
+ */
+function parseParentAgentId(sessionKey) {
+  const match = sessionKey?.match(/^agent:([^:]+):subagent:/);
+  return match?.[1] || null;
+}
+
+/**
+ * Resolve workspace directory for a given agent ID.
+ * Searches the OpenClaw config for agent workspace mappings.
+ * Falls back to ~/.openclaw/workspace/main for the "main" agent,
+ * or ~/.openclaw/workspaces/<agentId> for named agents.
+ */
+function resolveAgentWorkspace(agentId) {
+  if (!agentId) return null;
+
+  const base = process.env.OPENCLAW_HOME || path.join(process.env.HOME || "/tmp", ".openclaw");
+
+  // Try to read config for explicit workspace mapping
+  try {
+    const configPath = path.join(base, "openclaw.json");
+    const config = JSON.parse(fs.readFileSync(configPath, "utf8"));
+    const agents = config?.agents?.list || [];
+    const entry = agents.find(a => a.id === agentId || a.name === agentId);
+    if (entry?.workspace) return entry.workspace;
+
+    // Check defaults
+    if (agentId === "main") {
+      return config?.agents?.defaults?.workspace || path.join(base, "workspace", "main");
+    }
+  } catch {}
+
+  // Fallback heuristics
+  if (agentId === "main") return path.join(base, "workspace", "main");
+
+  // Named agents typically use ~/.openclaw/workspaces/<agentId>
+  const namedWs = path.join(base, "workspaces", agentId);
+  if (fs.existsSync(namedWs)) return namedWs;
+
+  return null;
+}
+
+/**
+ * Extract the Unsurfaced Results section from a state markdown file.
+ * Returns the raw text content of the section, or null if empty/placeholder.
+ */
+function extractUnsurfacedResults(md) {
+  if (!md) return null;
+  const section = extractSection(md, "Unsurfaced Results");
+  if (!section || !isMeaningful(section)) return null;
+  return section;
+}
+```
+
+- [ ] **Step 2: Verify the file still parses**
+
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity
+node -e "import('./index.js').then(m => console.log('OK:', typeof m.default))"
+```
+
+Expected: `OK: object`
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add index.js
+git commit -m "feat(subagent): add workspace resolution and session detection helpers"
+```
+
+---
+
+### Task 2: Parent→Child Seeding in before_agent_start
+
+**Files:**
+- Modify: `index.js` (HOOK 1: before_agent_start)
+
+When a child agent starts (detected via subagent session key format), read the parent agent's CURRENT_STATE.md and inject it as additional context alongside the child's own state.
+
+- [ ] **Step 1: Enhance the `before_agent_start` hook**
+
+In `index.js`, find HOOK 1 (`before_agent_start`). The current code reads the agent's own state and injects it. After the existing relevance injection block (around the `if (config.relevanceInjection !== false)` block), add parent-seed logic:
+
+Find this existing code block:
+
+```javascript
+      // Relevance injection: find related historical entries
+      if (config.relevanceInjection !== false) {
+        const objective = extractSection(md, "Objective");
+        const maxItems = config.maxRelevanceItems ?? 3;
+        const history = findRelevantHistory(ws, objective, maxItems);
+        if (history) {
+          parts.push(history);
+          log.info?.("[memory-continuity] Injected relevant history context");
+        }
+      }
+```
+
+Right after this block (before the `return` statement), insert:
+
+```javascript
+      // Parent seed: if this is a subagent, inject parent's working state
+      if (config.subagentSeed !== false && isSubagentSession(_ctx)) {
+        try {
+          const sessionKey = _ctx?.sessionKey || _ctx?.SessionKey || "";
+          const parentAgentId = parseParentAgentId(sessionKey);
+          if (parentAgentId) {
+            const parentWs = resolveAgentWorkspace(parentAgentId);
+            if (parentWs) {
+              const parentStatePath = resolveStatePath(parentWs);
+              const parentMd = parentStatePath ? readFile(parentStatePath) : null;
+              if (parentMd) {
+                const parentSnapshot = buildSnapshot(parentMd);
+                if (parentSnapshot) {
+                  parts.push(
+                    "=== PARENT AGENT CONTEXT ===\n" +
+                    "The following is the parent agent's working state. " +
+                    "Use this to understand the broader task context.\n" +
+                    parentSnapshot +
+                    "\n=== END PARENT CONTEXT ==="
+                  );
+                  log.info?.("[memory-continuity] Injected parent state seed for subagent");
+                }
+              }
+            }
+          }
+        } catch (err) {
+          log.warn?.("[memory-continuity] Parent seed failed (non-fatal): " + err.message);
+        }
+      }
+```
+
+- [ ] **Step 2: Verify plugin loads**
+
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity
+node -e "import('./index.js').then(m => console.log('OK:', typeof m.default))"
+```
+
+Expected: `OK: object`
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add index.js
+git commit -m "feat(subagent): parent-to-child state seeding in before_agent_start"
+```
+
+---
+
+### Task 3: Child→Parent Recovery via subagent_ended Hook
+
+**Files:**
+- Modify: `index.js` (add new HOOK 6: subagent_ended)
+
+When a child agent ends, read its CURRENT_STATE.md and check for unsurfaced results. If found, append them to the parent's state file.
+
+- [ ] **Step 1: Add the `subagent_ended` hook**
+
+In `index.js`, find the section after HOOK 5 (`session_end`) and before the SERVICE section. Add a new hook between them:
+
+```javascript
+    // ------------------------------------------------------------------
+    // HOOK 6: subagent_ended — recover child's unsurfaced results
+    // ------------------------------------------------------------------
+    api.on("subagent_ended", async (event, _ctx) => {
+      const config = getConfig();
+      if (config.subagentRecovery === false) return;
+
+      const parentWs = _ctx?.workspaceDir;
+      if (!parentWs) return;
+
+      const childSessionKey = event?.childSessionKey || _ctx?.childSessionKey;
+      if (!childSessionKey) {
+        log.info?.("[memory-continuity] subagent_ended: no childSessionKey, skipping");
+        return;
+      }
+
+      // Only process successful completions (not kills/errors)
+      const outcome = event?.outcome || "";
+      const reason = event?.reason || "";
+      if (outcome === "error" || reason === "killed" || reason === "spawn-failed") {
+        log.info?.("[memory-continuity] subagent_ended: child ended with " + (reason || outcome) + ", skipping recovery");
+        return;
+      }
+
+      try {
+        // Parse child agent ID from session key
+        const childMatch = childSessionKey.match(/^agent:([^:]+)/);
+        const childAgentId = childMatch?.[1];
+        if (!childAgentId) return;
+
+        const childWs = resolveAgentWorkspace(childAgentId);
+        if (!childWs) {
+          log.info?.("[memory-continuity] subagent_ended: cannot resolve child workspace for " + childAgentId);
+          return;
+        }
+
+        // Read child's state
+        const childStatePath = resolveStatePath(childWs);
+        const childMd = childStatePath ? readFile(childStatePath) : null;
+        if (!childMd) return;
+
+        // Extract unsurfaced results from child
+        const childUnsurfaced = extractUnsurfacedResults(childMd);
+        if (!childUnsurfaced) {
+          log.info?.("[memory-continuity] subagent_ended: no unsurfaced results in child state");
+          return;
+        }
+
+        // Also extract child's objective for context
+        const childObjective = extractSection(childMd, "Objective");
+
+        // Read parent's current state
+        const parentStatePath = resolveStatePath(parentWs);
+        if (!parentStatePath) return;
+
+        let parentMd = readFile(parentStatePath);
+        if (!parentMd) {
+          parentMd = STATE_TEMPLATE;
+        }
+
+        // Build the recovery note
+        const now = new Date().toISOString();
+        const recoveryNote = [
+          `[${now}] Subagent "${childAgentId}" completed.`,
+          childObjective ? `  Task: ${childObjective.split("\n")[0].slice(0, 120)}` : "",
+          `  Result: ${childUnsurfaced.split("\n")[0].slice(0, 200)}`,
+        ].filter(Boolean).join("\n");
+
+        // Merge into parent's Unsurfaced Results section
+        const existingUnsurfaced = extractSection(parentMd, "Unsurfaced Results");
+        const mergedUnsurfaced = isMeaningful(existingUnsurfaced)
+          ? existingUnsurfaced + "\n" + recoveryNote
+          : recoveryNote;
+
+        // Token-aware truncation of merged results
+        if (estimateTokens(mergedUnsurfaced) > 500) {
+          // Keep only the most recent entries (last 500 tokens)
+          const lines = mergedUnsurfaced.split("\n");
+          let kept = [];
+          let tokens = 0;
+          for (let i = lines.length - 1; i >= 0; i--) {
+            const lineTokens = estimateTokens(lines[i]);
+            if (tokens + lineTokens > 500) break;
+            kept.unshift(lines[i]);
+            tokens += lineTokens;
+          }
+          const truncated = kept.join("\n");
+          parentMd = parentMd.replace(
+            /## Unsurfaced Results\n[\s\S]*?(?=\n## |\n$|$)/,
+            "## Unsurfaced Results\n" + truncated
+          );
+        } else {
+          parentMd = parentMd.replace(
+            /## Unsurfaced Results\n[\s\S]*?(?=\n## |\n$|$)/,
+            "## Unsurfaced Results\n" + mergedUnsurfaced
+          );
+        }
+
+        // Update the timestamp
+        parentMd = parentMd.replace(
+          /^> Last updated:.*$/m,
+          `> Last updated: ${now}`
+        );
+
+        writeFile(parentStatePath, parentMd);
+        log.info?.("[memory-continuity] Recovered unsurfaced results from subagent " + childAgentId);
+      } catch (err) {
+        log.warn?.("[memory-continuity] subagent_ended recovery failed (non-fatal): " + err.message);
+      }
+    }, { priority: 50 });
+```
+
+- [ ] **Step 2: Verify plugin loads**
+
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity
+node -e "import('./index.js').then(m => console.log('OK:', typeof m.default))"
+```
+
+Expected: `OK: object`
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add index.js
+git commit -m "feat(subagent): child-to-parent unsurfaced results recovery via subagent_ended"
+```
+
+---
+
+### Task 4: New Config Keys + Manifest Bump
+
+**Files:**
+- Modify: `openclaw.plugin.json`
+- Modify: `package.json`
+
+- [ ] **Step 1: Add subagent config keys to `openclaw.plugin.json`**
+
+Bump version to `5.0.0`. Add two new config properties inside `configSchema.properties`:
+
+```json
+      "subagentSeed": {
+        "type": "boolean",
+        "default": true,
+        "description": "Inject parent working state into subagent context at startup"
+      },
+      "subagentRecovery": {
+        "type": "boolean",
+        "default": true,
+        "description": "Recover unsurfaced results from completed subagents back to parent"
+      }
+```
+
+Add corresponding `uiHints`:
+
+```json
+    "subagentSeed": {
+      "label": "Subagent seeding",
+      "help": "Give subagents parent context so they understand the broader task"
+    },
+    "subagentRecovery": {
+      "label": "Subagent recovery",
+      "help": "Pull completed subagent results back into parent state"
+    }
+```
+
+- [ ] **Step 2: Bump `package.json` to 5.0.0**
+
+Change `"version": "4.0.0"` to `"version": "5.0.0"`.
+
+- [ ] **Step 3: Verify JSON validity**
+
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity
+python3 -m json.tool openclaw.plugin.json > /dev/null && echo "JSON valid"
+node -e "import('./index.js').then(m => console.log('OK:', typeof m.default))"
+```
+
+Expected:
+```
+JSON valid
+OK: object
+```
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add openclaw.plugin.json package.json
+git commit -m "feat(subagent): add subagentSeed and subagentRecovery config keys, bump to v5.0.0"
+```
+
+---
+
+### Task 5: Add `/mc subagents` Command
+
+**Files:**
+- Modify: `mc-plugin/index.js`
+- Modify: `mc-plugin/package.json`
+- Modify: `mc-plugin/openclaw.plugin.json`
+
+Add a new `/mc subagents` command that shows subagent state across workspaces.
+
+- [ ] **Step 1: Add `cmdSubagents` function to mc-plugin**
+
+In `mc-plugin/index.js`, before the `cmdHelp` function, add:
+
+```javascript
+function cmdSubagents(args) {
+  const agents = discoverAgents();
+  if (agents.length === 0) return "No agents with memory found.";
+
+  let out = "Subagent State Overview\n";
+  out += "═══════════════════════\n\n";
+
+  for (const { name, memDir } of agents) {
+    const statePath = path.join(memDir, "CURRENT_STATE.md");
+    const content = readFile(statePath);
+    if (!content) {
+      out += `[${name}] No state file\n\n`;
+      continue;
+    }
+
+    const objMatch = content.match(/## Objective\n([\s\S]*?)(?=\n## )/);
+    const unsurfMatch = content.match(/## Unsurfaced Results\n([\s\S]*?)(?=\n## |$)/);
+    const updatedMatch = content.match(/^> Last updated:\s*(.+)$/m);
+
+    const objective = objMatch?.[1]?.trim() || "None";
+    const unsurfaced = unsurfMatch?.[1]?.trim() || "None";
+    const updated = updatedMatch?.[1]?.trim() || "unknown";
+
+    out += `[${name}] Updated: ${updated}\n`;
+    out += `  Objective: ${truncate(objective.split("\n")[0], 80)}\n`;
+    if (unsurfaced !== "None") {
+      out += `  Unsurfaced: ${truncate(unsurfaced.split("\n")[0], 80)}\n`;
+    }
+    out += "\n";
+  }
+
+  return out.trimEnd();
+}
+```
+
+- [ ] **Step 2: Register the command in the switch statement**
+
+Find the `switch (subcmd)` block and add a new case before the `help` case:
+
+```javascript
+          case "subagents": text = cmdSubagents(subargs || null); break;
+```
+
+- [ ] **Step 3: Update help text**
+
+In `cmdHelp`, add:
+
+```
+/mc subagents           Subagent state overview across workspaces
+```
+
+- [ ] **Step 4: Bump mc-plugin versions to 2.1.0**
+
+In `mc-plugin/package.json`, change version to `"2.1.0"`.
+In `mc-plugin/openclaw.plugin.json`, change version to `"2.1.0"`.
+
+- [ ] **Step 5: Verify mc-plugin loads**
+
+```bash
+cd /Users/taodeng/.openclaw/projects/memory-continuity/mc-plugin
+node -e "import('./index.js').then(m => console.log('OK:', typeof m.default))"
+```
+
+Expected: `OK: function`
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add mc-plugin/
+git commit -m "feat(subagent): add /mc subagents command for cross-workspace state view"
+```
+
+---
+
+### Task 6: Version Verify + Git + Deploy
+
+**Files:** All modified files
+
+- [ ] **Step 1: Verify all versions**
+
+```bash
+grep '"version"' openclaw.plugin.json package.json mc-plugin/openclaw.plugin.json mc-plugin/package.json
+```
+
+Expected:
+```
+openclaw.plugin.json: "version": "5.0.0"
+package.json: "version": "5.0.0"
+mc-plugin/openclaw.plugin.json: "version": "2.1.0"
+mc-plugin/package.json: "version": "2.1.0"
+```
+
+- [ ] **Step 2: Final commit + tag + push**
+
+```bash
+git add -A
+git commit -m "release: v5.0.0 — conservative subagent support (parent seed + child recovery)"
+git tag v5.0.0
+git push origin main --tags
+```
+
+- [ ] **Step 3: Deploy to Cloud**
+
+```bash
+scp index.js package.json openclaw.plugin.json opc@152.67.121.35:~/.openclaw/extensions/memory-continuity/
+scp mc-plugin/index.js mc-plugin/package.json mc-plugin/openclaw.plugin.json opc@152.67.121.35:~/.openclaw/extensions/mc/
+ssh opc@152.67.121.35 "pkill -f 'openclaw.*gateway' 2>/dev/null; sleep 2; nohup openclaw gateway start > /dev/null 2>&1 &"
+```
+
+- [ ] **Step 4: Deploy to PI**
+
+```bash
+scp index.js package.json openclaw.plugin.json administrator@172.16.2.232:~/.openclaw/extensions/memory-continuity/
+scp mc-plugin/index.js mc-plugin/package.json mc-plugin/openclaw.plugin.json administrator@172.16.2.232:~/.openclaw/extensions/mc/
+ssh administrator@172.16.2.232 "pkill -f 'openclaw.*gateway' 2>/dev/null; sleep 2; nohup openclaw gateway start > /dev/null 2>&1 &"
+```
+
+- [ ] **Step 5: Deploy to Mac**
+
+```bash
+cp index.js package.json openclaw.plugin.json ~/.openclaw/extensions/memory-continuity/
+pkill -f 'openclaw.*gateway' 2>/dev/null; sleep 2; nohup openclaw gateway start > /dev/null 2>&1 &
+```
+
+- [ ] **Step 6: Verify all 3 servers**
+
+```bash
+grep version ~/.openclaw/extensions/memory-continuity/package.json
+ssh opc@152.67.121.35 "grep version ~/.openclaw/extensions/memory-continuity/package.json"
+ssh administrator@172.16.2.232 "grep version ~/.openclaw/extensions/memory-continuity/package.json"
+```
+
+Expected: all show `"version": "5.0.0"`.

index.js

@@ -14,7 +14,39 @@ const PLACEHOLDER_VALUES = new Set([
   "[exactly what should happen next]",
 ]);
 
-const STATE_TEMPLATE = `# Current State
+// Matches a single CJK character (no `g` flag — used per-char in estimateTokens)
+const CJK_RE = /[\u4e00-\u9fff\u3400-\u4dbf\uf900-\ufaff\u3000-\u303f\uff00-\uffef]/;
+
+// Patterns that indicate error/garbage assistant responses — kept at module scope
+// so the array is not re-created on every extractStateFromMessages call.
+const POISON_PATTERNS = [
+  /not logged in/i,
+  /please run \/login/i,
+  /unknown skill/i,
+  /session expired/i,
+  /auth.*failed/i,
+  /error.*timeout/i,
+];
+const isPoisoned = (text) => POISON_PATTERNS.some(p => p.test(text));
+
+/**
+ * Estimate token count with CJK awareness.
+ * CJK characters ≈ 1.5 tokens each; Latin/other chars ≈ 1 token per ~4 chars.
+ * Uses a single-pass for...of loop so surrogate pairs are iterated by code point.
+ */
+function estimateTokens(text) {
+  if (!text) return 0;
+  let cjkCount = 0;
+  let nonCjkLen = 0;
+  for (const ch of text) {
+    if (CJK_RE.test(ch)) cjkCount++;
+    else nonCjkLen++;
+  }
+  return Math.ceil(cjkCount * 1.5) + Math.ceil(nonCjkLen / 4);
+}
+
+function stateTemplate() {
+  return `# Current State
 > Last updated: ${new Date().toISOString()}
 
 ## Objective
@@ -35,6 +67,7 @@ None
 ## Unsurfaced Results
 None
 `;
+}
 
 // ---------------------------------------------------------------------------
 // Helpers
@@ -139,6 +172,473 @@ function cleanupMemoryDir(workspaceDir) {
   } catch {}
 }
 
+/**
+ * Append a session summary to the daily session log.
+ * File: memory/sessions/YYYY-MM-DD.md (one per day, append-only)
+ */
+function writeSessionLog(workspaceDir, messages, config = {}) {
+  if (config.sessionLogging === false) return;
+  if (!messages || messages.length === 0) return;
+
+  const now = new Date();
+  const pad = (n) => String(n).padStart(2, "0");
+  const dateStr = `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}`;
+  const timeStr = `${pad(now.getHours())}:${pad(now.getMinutes())}`;
+
+  const sessionsDir = path.join(workspaceDir, "memory", "sessions");
+  fs.mkdirSync(sessionsDir, { recursive: true });
+
+  const logFile = path.join(sessionsDir, `${dateStr}.md`);
+
+  // Extract first meaningful user message as topic
+  let topic = "(no topic)";
+  for (const msg of messages) {
+    if (msg?.role !== "user") continue;
+    const text = typeof msg.content === "string"
+      ? msg.content
+      : Array.isArray(msg.content)
+        ? msg.content.filter(b => b?.type === "text").map(b => b.text).join("\n")
+        : "";
+    const cleaned = text
+      .replace(/^Conversation info \(untrusted metadata\):[\s\S]*?\n\n/m, "")
+      .replace(/^Sender \(untrusted metadata\):[\s\S]*?\n\n/m, "")
+      .trim();
+    if (cleaned.length > 10) {
+      topic = cleaned.split("\n")[0].slice(0, 120);
+      break;
+    }
+  }
+
+  // Count messages by role
+  const userCount = messages.filter(m => m?.role === "user").length;
+  const assistantCount = messages.filter(m => m?.role === "assistant").length;
+  const contentToString = (m) => {
+    if (typeof m?.content === "string") return m.content;
+    if (Array.isArray(m?.content))
+      return m.content.filter(b => b?.type === "text").map(b => b.text).join(" ");
+    return "";
+  };
+  const totalTokens = estimateTokens(messages.map(contentToString).join(" "));
+
+  // Build log entry
+  const entry = [
+    `### ${timeStr}`,
+    `- **Topic:** ${topic}`,
+    `- **Messages:** ${userCount} user / ${assistantCount} assistant`,
+    `- **Est. tokens:** ~${totalTokens}`,
+    "",
+  ].join("\n");
+
+  // Append-safe: use appendFileSync for both new and existing files
+  const isNew = !fs.existsSync(logFile);
+  const prefix = isNew ? `# Session Log — ${dateStr}\n\n` : "";
+  fs.appendFileSync(logFile, prefix + entry, "utf8");
+
+  // Extract and index #tags from the topic
+  updateTagIndex(workspaceDir, topic, dateStr);
+}
+
+/**
+ * Extract the last N meaningful user/assistant exchange pairs from messages.
+ * Returns a formatted string for injection into compaction context.
+ */
+function extractTailMessages(messages, count = 3) {
+  if (!messages || messages.length === 0) return null;
+
+  // Walk backwards, collect up to `count` user+assistant pairs
+  const pairs = [];
+  let i = messages.length - 1;
+
+  while (i >= 0 && pairs.length < count) {
+    // Find assistant message
+    while (i >= 0 && messages[i]?.role !== "assistant") i--;
+    if (i < 0) break;
+    const assistantMsg = messages[i];
+    i--;
+
+    // Find preceding user message
+    while (i >= 0 && messages[i]?.role !== "user") i--;
+    if (i < 0) break;
+    const userMsg = messages[i];
+    i--;
+
+    const getText = (msg) => {
+      if (typeof msg?.content === "string") return msg.content;
+      if (Array.isArray(msg?.content)) {
+        return msg.content.filter(b => b?.type === "text").map(b => b.text).join("\n");
+      }
+      return "";
+    };
+
+    const userText = getText(userMsg).trim();
+    const assistantText = getText(assistantMsg).trim();
+
+    // Skip trivial exchanges
+    if (userText.length < 10 && assistantText.length < 20) continue;
+
+    // Token-aware truncation per message
+    const maxPerMsg = 150;
+    const truncMsg = (s) => {
+      if (estimateTokens(s) <= maxPerMsg) return s;
+      let lo = 0, hi = s.length;
+      while (lo < hi) {
+        const mid = (lo + hi + 1) >> 1;
+        if (estimateTokens(s.slice(0, mid)) <= maxPerMsg) lo = mid;
+        else hi = mid - 1;
+      }
+      // Avoid splitting surrogate pairs
+      while (lo > 0 && lo < s.length && s.charCodeAt(lo) >= 0xDC00 && s.charCodeAt(lo) <= 0xDFFF) lo--;
+      return s.slice(0, lo) + "...";
+    };
+
+    pairs.unshift({ user: truncMsg(userText), assistant: truncMsg(assistantText) });
+  }
+
+  if (pairs.length === 0) return null;
+
+  const lines = ["=== RECENT EXCHANGE (protected) ==="];
+  for (const p of pairs) {
+    lines.push(`User: ${p.user}`);
+    lines.push(`Assistant: ${p.assistant}`);
+    lines.push("---");
+  }
+  lines.push("=== END RECENT EXCHANGE ===");
+  return lines.join("\n");
+}
+
+/**
+ * Generate a daily summary from the previous day's session log.
+ * Only runs when today differs from the last summary date.
+ * Output: memory/summaries/daily/YYYY-MM-DD.md
+ */
+function generateDailySummary(workspaceDir, config = {}) {
+  if (config.summaryEnabled === false) return;
+
+  const pad = (n) => String(n).padStart(2, "0");
+  const now = new Date();
+  const today = `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}`;
+
+  // Check yesterday's date
+  const yesterday = new Date(now);
+  yesterday.setDate(yesterday.getDate() - 1);
+  const yStr = `${yesterday.getFullYear()}-${pad(yesterday.getMonth() + 1)}-${pad(yesterday.getDate())}`;
+
+  const summaryDir = path.join(workspaceDir, "memory", "summaries", "daily");
+  const summaryFile = path.join(summaryDir, `${yStr}.md`);
+
+  // Skip if summary already exists for yesterday
+  if (fs.existsSync(summaryFile)) return;
+
+  // Read yesterday's session log
+  const sessionFile = path.join(workspaceDir, "memory", "sessions", `${yStr}.md`);
+  const sessionContent = readFile(sessionFile);
+  if (!sessionContent) return; // No sessions yesterday
+
+  // Parse session entries
+  const entries = sessionContent.split(/^### /gm).filter(e => e.trim());
+  if (entries.length === 0) return;
+
+  const topics = [];
+  let totalUser = 0;
+  let totalAssistant = 0;
+  let totalTokens = 0;
+
+  for (const entry of entries) {
+    const topicMatch = entry.match(/\*\*Topic:\*\*\s*(.+)/);
+    const msgMatch = entry.match(/\*\*Messages:\*\*\s*(\d+)\s*user\s*\/\s*(\d+)\s*assistant/);
+    const tokenMatch = entry.match(/\*\*Est\. tokens:\*\*\s*~(\d+)/);
+
+    if (topicMatch) topics.push(topicMatch[1].trim());
+    if (msgMatch) {
+      totalUser += parseInt(msgMatch[1]);
+      totalAssistant += parseInt(msgMatch[2]);
+    }
+    if (tokenMatch) totalTokens += parseInt(tokenMatch[1]);
+  }
+
+  // Build daily summary
+  const summary = [
+    `# Daily Summary — ${yStr}`,
+    "",
+    `**Sessions:** ${entries.length}`,
+    `**Messages:** ${totalUser} user / ${totalAssistant} assistant`,
+    `**Est. tokens:** ~${totalTokens}`,
+    "",
+    "## Topics",
+    ...topics.map((t, i) => `${i + 1}. ${t}`),
+    "",
+  ].join("\n");
+
+  fs.mkdirSync(summaryDir, { recursive: true });
+  fs.writeFileSync(summaryFile, summary, "utf8");
+}
+
+/**
+ * Generate a weekly summary by rolling up daily summaries.
+ * Runs on Monday, summarizing the previous week (Mon-Sun).
+ * Output: memory/summaries/weekly/YYYY-Www.md (ISO week number)
+ */
+function generateWeeklySummary(workspaceDir, config = {}) {
+  if (config.summaryEnabled === false) return;
+
+  const now = new Date();
+  // Only run on Mondays
+  if (now.getDay() !== 1) return;
+
+  const pad = (n) => String(n).padStart(2, "0");
+
+  // Calculate previous week's Monday
+  const prevMonday = new Date(now);
+  prevMonday.setDate(prevMonday.getDate() - 7);
+
+  // Correct ISO 8601 week number
+  const target = new Date(prevMonday.valueOf());
+  target.setDate(target.getDate() + 3 - ((target.getDay() + 6) % 7));
+  const jan4 = new Date(target.getFullYear(), 0, 4);
+  const weekNum = 1 + Math.round(((target - jan4) / 86400000 - 3 + ((jan4.getDay() + 6) % 7)) / 7);
+  const weekLabel = `${prevMonday.getFullYear()}-W${pad(weekNum)}`;
+
+  const weeklyDir = path.join(workspaceDir, "memory", "summaries", "weekly");
+  const weeklyFile = path.join(weeklyDir, `${weekLabel}.md`);
+
+  // Skip if already generated
+  if (fs.existsSync(weeklyFile)) return;
+
+  // Collect daily summaries for the 7 days of previous week
+  const dailyDir = path.join(workspaceDir, "memory", "summaries", "daily");
+  const dailies = [];
+  let weekSessions = 0;
+  let weekUser = 0;
+  let weekAssistant = 0;
+  let weekTokens = 0;
+  const allTopics = [];
+
+  for (let d = 0; d < 7; d++) {
+    const day = new Date(prevMonday);
+    day.setDate(day.getDate() + d);
+    const dayStr = `${day.getFullYear()}-${pad(day.getMonth() + 1)}-${pad(day.getDate())}`;
+    const dailyFile = path.join(dailyDir, `${dayStr}.md`);
+    const content = readFile(dailyFile);
+    if (!content) continue;
+
+    dailies.push(dayStr);
+
+    const sessMatch = content.match(/\*\*Sessions:\*\*\s*(\d+)/);
+    const msgMatch = content.match(/\*\*Messages:\*\*\s*(\d+)\s*user\s*\/\s*(\d+)\s*assistant/);
+    const tokenMatch = content.match(/\*\*Est\. tokens:\*\*\s*~(\d+)/);
+
+    if (sessMatch) weekSessions += parseInt(sessMatch[1]);
+    if (msgMatch) {
+      weekUser += parseInt(msgMatch[1]);
+      weekAssistant += parseInt(msgMatch[2]);
+    }
+    if (tokenMatch) weekTokens += parseInt(tokenMatch[1]);
+
+    // Extract topics
+    const topicSection = content.split("## Topics")[1];
+    if (topicSection) {
+      const topics = topicSection.match(/^\d+\.\s+(.+)$/gm);
+      if (topics) allTopics.push(...topics.map(t => t.replace(/^\d+\.\s+/, "").trim()));
+    }
+  }
+
+  if (dailies.length === 0) return;
+
+  // Deduplicate topics (keep first occurrence)
+  const seen = new Set();
+  const uniqueTopics = allTopics.filter(t => {
+    const key = t.toLowerCase().slice(0, 50);
+    if (seen.has(key)) return false;
+    seen.add(key);
+    return true;
+  });
+
+  const summary = [
+    `# Weekly Summary — ${weekLabel}`,
+    `> ${dailies[0]} to ${dailies[dailies.length - 1]}`,
+    "",
+    `**Active days:** ${dailies.length}/7`,
+    `**Total sessions:** ${weekSessions}`,
+    `**Total messages:** ${weekUser} user / ${weekAssistant} assistant`,
+    `**Est. total tokens:** ~${weekTokens}`,
+    "",
+    "## Key Topics",
+    ...uniqueTopics.slice(0, 20).map((t, i) => `${i + 1}. ${t}`),
+    "",
+  ].join("\n");
+
+  fs.mkdirSync(weeklyDir, { recursive: true });
+  fs.writeFileSync(weeklyFile, summary, "utf8");
+}
+
+/**
+ * Extract #tags from a session topic and update the tag index.
+ * Tags file: memory/tags.md — simple markdown index mapping tags to dates.
+ */
+function updateTagIndex(workspaceDir, topic, dateStr) {
+  if (!topic) return;
+
+  // Extract #tags (word chars + hyphens after #)
+  const tags = topic.match(/#[\p{L}\p{N}_-]+/gu);
+  if (!tags || tags.length === 0) return;
+
+  const tagsFile = path.join(workspaceDir, "memory", "tags.md");
+  let existing = readFile(tagsFile) || "# Tag Index\n\n";
+
+  for (const tag of tags) {
+    const normalizedTag = tag.toLowerCase();
+    // Check if this exact tag+date combo already exists under this tag's section
+    const tagSection = existing.match(new RegExp(`## ${normalizedTag.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")}\\n([\\s\\S]*?)(?=\\n## |$)`));
+    if (tagSection && tagSection[1].includes(dateStr)) continue;
+
+    // Find or create tag section
+    const tagHeader = `## ${normalizedTag}`;
+    if (existing.includes(tagHeader)) {
+      // Append date to existing tag section
+      existing = existing.replace(
+        tagHeader,
+        `${tagHeader}\n- ${dateStr}`
+      );
+    } else {
+      // Add new tag section
+      existing += `${tagHeader}\n- ${dateStr}\n\n`;
+    }
+  }
+
+  writeFile(tagsFile, existing);
+}
+
+/**
+ * Find relevant historical entries by keyword matching against the current objective.
+ * Searches session logs and daily summaries, returns up to `maxItems` formatted entries.
+ */
+function findRelevantHistory(workspaceDir, objective, maxItems = 3) {
+  if (!objective || objective.length < 10) return null;
+
+  // Extract keywords from objective (words > 3 chars, excluding common words)
+  const stopWords = new Set(["this", "that", "with", "from", "have", "been", "will", "what", "when", "where", "which", "there", "their", "about", "would", "should", "could", "into", "some", "them", "than", "then", "these", "those", "just", "also", "more", "other", "after", "before", "none"]);
+  const words = objective
+    .replace(/[^\w\u4e00-\u9fff\u3400-\u4dbf-]/g, " ")
+    .split(/\s+/)
+    .filter(w => w.length > 3 && !stopWords.has(w.toLowerCase()))
+    .map(w => w.toLowerCase());
+
+  if (words.length === 0) return null;
+
+  // Build a scoring regex from keywords
+  const keywordPatterns = words.slice(0, 10).map(w => w.replace(/[.*+?^${}()|[\]\\]/g, "\\$&"));
+
+  const scored = [];
+
+  // Search daily summaries (most recent 14)
+  const dailyDir = path.join(workspaceDir, "memory", "summaries", "daily");
+  try {
+    const files = fs.readdirSync(dailyDir).filter(f => f.endsWith(".md")).sort().reverse();
+    for (const f of files.slice(0, 14)) {
+      const content = readFile(path.join(dailyDir, f));
+      if (!content) continue;
+      let score = 0;
+      const lower = content.toLowerCase();
+      for (const kw of keywordPatterns) {
+        const matches = lower.match(new RegExp(kw, "gi"));
+        if (matches) score += matches.length;
+      }
+      if (score > 0) {
+        const date = f.replace(".md", "");
+        // Extract topics section for context
+        const topicsMatch = content.match(/## Topics\n([\s\S]*?)(?:\n##|$)/);
+        const topics = topicsMatch ? topicsMatch[1].trim().split("\n").slice(0, 3).join("; ") : "";
+        scored.push({ date, type: "daily", score, summary: topics || content.split("\n").slice(0, 3).join(" ") });
+      }
+    }
+  } catch {}
+
+  // Search session logs (most recent 7 days)
+  const sessionsDir = path.join(workspaceDir, "memory", "sessions");
+  try {
+    const files = fs.readdirSync(sessionsDir).filter(f => f.endsWith(".md")).sort().reverse();
+    for (const f of files.slice(0, 7)) {
+      const content = readFile(path.join(sessionsDir, f));
+      if (!content) continue;
+
+      // Score individual session entries
+      const entries = content.split(/^### /gm).filter(e => e.trim());
+      for (const entry of entries) {
+        let score = 0;
+        const lower = entry.toLowerCase();
+        for (const kw of keywordPatterns) {
+          const matches = lower.match(new RegExp(kw, "gi"));
+          if (matches) score += matches.length;
+        }
+        if (score > 1) { // Require at least 2 keyword hits for session entries
+          const topicMatch = entry.match(/\*\*Topic:\*\*\s*(.+)/);
+          const time = entry.match(/^(\d{2}:\d{2})/)?.[1] || "";
+          const date = f.replace(".md", "");
+          scored.push({ date: `${date} ${time}`, type: "session", score, summary: topicMatch?.[1] || entry.slice(0, 80) });
+        }
+      }
+    }
+  } catch {}
+
+  if (scored.length === 0) return null;
+
+  // Sort by score descending, take top N
+  scored.sort((a, b) => b.score - a.score);
+  const top = scored.slice(0, maxItems);
+
+  const lines = ["=== RELATED HISTORY ==="];
+  for (const item of top) {
+    lines.push(`[${item.date}] ${item.summary}`);
+  }
+  lines.push("=== END RELATED HISTORY ===");
+  return lines.join("\n");
+}
+
+/**
+ * Move archives older than `decayDays` to a cold/ subdirectory.
+ * Files are preserved, not deleted — they just leave the active index.
+ */
+function decayOldArchives(workspaceDir, config = {}) {
+  const decayDays = config.archiveDecayDays ?? 30;
+  if (decayDays <= 0) return; // Disabled
+
+  const archiveDir = path.join(workspaceDir, "memory", "session_archive");
+  const coldDir = path.join(archiveDir, "cold");
+
+  let files;
+  try { files = fs.readdirSync(archiveDir).filter(f => f.endsWith(".md")); }
+  catch { return; }
+
+  const cutoff = Date.now() - (decayDays * 86400000);
+
+  let movedCount = 0;
+  for (const f of files) {
+    // Parse date from filename: YYYY-MM-DD_HH-MM.md
+    const dateMatch = f.match(/^(\d{4})-(\d{2})-(\d{2})/);
+    if (!dateMatch) continue;
+
+    const fileDate = new Date(
+      parseInt(dateMatch[1]),
+      parseInt(dateMatch[2]) - 1,
+      parseInt(dateMatch[3])
+    ).getTime();
+
+    if (fileDate < cutoff) {
+      fs.mkdirSync(coldDir, { recursive: true });
+      const src = path.join(archiveDir, f);
+      const dst = path.join(coldDir, f);
+      try {
+        // Move: copy then delete
+        fs.copyFileSync(src, dst);
+        fs.unlinkSync(src);
+        movedCount++;
+      } catch {}
+    }
+  }
+
+  return movedCount;
+}
+
 function extractStateFromMessages(messages) {
   if (!messages || messages.length === 0) return null;
 
@@ -171,8 +671,24 @@ function extractStateFromMessages(messages) {
   const lastUser = userMessages[userMessages.length - 1] || "";
   const lastAssistant = assistantMessages[assistantMessages.length - 1] || "";
 
-  // Truncate to keep it compact
+  // Token-aware truncation
-  const truncate = (s, max = 200) => s.length > max ? s.slice(0, max) + "..." : s;
+  const truncate = (s, maxTokens = 200) => {
+    if (estimateTokens(s) <= maxTokens) return s;
+    // Binary search for the right cut point
+    let lo = 0, hi = s.length;
+    while (lo < hi) {
+      const mid = (lo + hi + 1) >> 1;
+      if (estimateTokens(s.slice(0, mid)) <= maxTokens) lo = mid;
+      else hi = mid - 1;
+    }
+    // Avoid splitting surrogate pairs
+    while (lo > 0 && lo < s.length && s.charCodeAt(lo) >= 0xDC00 && s.charCodeAt(lo) <= 0xDFFF) lo--;
+    return s.slice(0, lo) + "...";
+  };
+
+  // Filter out error/garbage responses that would poison future sessions
+  if (isPoisoned(lastAssistant)) return null;
+  if (isPoisoned(lastUser) && !lastAssistant) return null;
 
   return `# Current State
 > Last updated: ${new Date().toISOString()}
@@ -197,6 +713,74 @@ ${truncate(lastAssistant, 500)}
 `;
 }
 
+/**
+ * Detect if the current session is a subagent by checking the session key format.
+ * Subagent session keys follow: agent:<agentId>:subagent:<uuid>
+ */
+function isSubagentSession(ctx) {
+  const key = ctx?.sessionKey || ctx?.SessionKey || "";
+  return /^agent:[^:]+:subagent:/.test(key);
+}
+
+/**
+ * Extract the parent agent ID from a subagent session key.
+ * Session key format: agent:<parentAgentId>:subagent:<uuid>
+ * Returns null if not a subagent key.
+ */
+function parseParentAgentId(sessionKey) {
+  const match = sessionKey?.match(/^agent:([^:]+):subagent:/);
+  return match?.[1] || null;
+}
+
+/**
+ * Resolve workspace directory for a given agent ID.
+ * Searches the OpenClaw config for agent workspace mappings.
+ * Falls back to ~/.openclaw/workspace/main for the "main" agent,
+ * or ~/.openclaw/workspaces/<agentId> for named agents.
+ */
+function resolveAgentWorkspace(agentId) {
+  if (!agentId) return null;
+
+  // Prevent path traversal via crafted agent IDs
+  if (!/^[\w-]+$/.test(agentId)) return null;
+
+  const base = process.env.OPENCLAW_HOME || path.join(process.env.HOME || "/tmp", ".openclaw");
+
+  // Try to read config for explicit workspace mapping
+  try {
+    const configPath = path.join(base, "openclaw.json");
+    const config = JSON.parse(fs.readFileSync(configPath, "utf8"));
+    const agents = config?.agents?.list || [];
+    const entry = agents.find(a => a.id === agentId || a.name === agentId);
+    if (entry?.workspace) return entry.workspace;
+
+    // Check defaults
+    if (agentId === "main") {
+      return config?.agents?.defaults?.workspace || path.join(base, "workspace", "main");
+    }
+  } catch {}
+
+  // Fallback heuristics
+  if (agentId === "main") return path.join(base, "workspace", "main");
+
+  // Named agents typically use ~/.openclaw/workspaces/<agentId>
+  const namedWs = path.join(base, "workspaces", agentId);
+  if (fs.existsSync(namedWs)) return namedWs;
+
+  return null;
+}
+
+/**
+ * Extract the Unsurfaced Results section from a state markdown file.
+ * Returns the raw text content of the section, or null if empty/placeholder.
+ */
+function extractUnsurfacedResults(md) {
+  if (!md) return null;
+  const section = extractSection(md, "Unsurfaced Results");
+  if (!section || !isMeaningful(section)) return null;
+  return section;
+}
+
 // ---------------------------------------------------------------------------
 // Plugin Definition
 // ---------------------------------------------------------------------------
@@ -214,6 +798,7 @@ const plugin = {
     // ------------------------------------------------------------------
     api.on("before_agent_start", async (_event, _ctx) => {
       const ws = _ctx?.workspaceDir;
+      const config = getConfig();
       const statePath = resolveStatePath(ws);
       if (!statePath) return;
 
@@ -225,9 +810,52 @@ const plugin = {
 
       log.info?.("[memory-continuity] Injecting recovered state into context");
 
+      const parts = [snapshot];
+
+      // Relevance injection: find related historical entries
+      if (config.relevanceInjection !== false) {
+        const objective = extractSection(md, "Objective");
+        const maxItems = config.maxRelevanceItems ?? 3;
+        const history = findRelevantHistory(ws, objective, maxItems);
+        if (history) {
+          parts.push(history);
+          log.info?.("[memory-continuity] Injected relevant history context");
+        }
+      }
+
+      // Parent seed: if this is a subagent, inject parent's working state
+      if (config.subagentSeed !== false && isSubagentSession(_ctx)) {
+        try {
+          const sessionKey = _ctx?.sessionKey || _ctx?.SessionKey || "";
+          const parentAgentId = parseParentAgentId(sessionKey);
+          if (parentAgentId) {
+            const parentWs = resolveAgentWorkspace(parentAgentId);
+            if (parentWs) {
+              const parentStatePath = resolveStatePath(parentWs);
+              const parentMd = parentStatePath ? readFile(parentStatePath) : null;
+              if (parentMd) {
+                const parentSnapshot = buildSnapshot(parentMd);
+                if (parentSnapshot) {
+                  parts.push(
+                    "=== PARENT AGENT CONTEXT ===\n" +
+                    "The following is the parent agent's working state. " +
+                    "Use this to understand the broader task context.\n" +
+                    parentSnapshot +
+                    "\n=== END PARENT CONTEXT ==="
+                  );
+                  log.info?.("[memory-continuity] Injected parent state seed for subagent");
+                }
+              }
+            }
+          }
+        } catch (err) {
+          log.warn?.("[memory-continuity] Parent seed failed (non-fatal): " + err.message);
+        }
+      }
+
       return {
         prependSystemContext:
-          snapshot + "\n\n" +
+          parts.join("\n\n") + "\n\n" +
           "IMPORTANT: The above is recovered working state from a previous session. " +
           "If the user appears to be resuming work, surface this state immediately " +
           "before any generic greeting. This is a continuity requirement, not optional.",
@@ -239,6 +867,7 @@ const plugin = {
     // ------------------------------------------------------------------
     api.on("before_compaction", async (_event, _ctx) => {
       const ws = _ctx?.workspaceDir;
+      const config = getConfig();
       const statePath = resolveStatePath(ws);
       if (!statePath) return;
 
@@ -250,8 +879,19 @@ const plugin = {
 
       log.info?.("[memory-continuity] Injecting state before compaction");
 
+      // Smart tail protection: also inject recent critical messages
+      const tailCount = config.tailProtectCount ?? 3;
+      const messages = _event?.messages;
+      const tail = tailCount > 0 ? extractTailMessages(messages, tailCount) : null;
+
+      const parts = [snapshot];
+      if (tail) {
+        parts.push(tail);
+        log.info?.("[memory-continuity] Tail protection: injected recent exchanges");
+      }
+
       return {
-        prependSystemContext: snapshot,
+        prependSystemContext: parts.join("\n\n"),
       };
     }, { priority: 10 });
 
@@ -293,8 +933,9 @@ const plugin = {
       }
 
       // Count real user messages (exclude system, metadata-only, short commands)
-      const realUserMsgs = messages.filter(m => {
+      // Returns cleaned text strings so ignore-pattern regex can test against actual content.
-        if (m?.role !== "user") return false;
+      const realUserMsgs = messages.reduce((acc, m) => {
+        if (m?.role !== "user") return acc;
         const text = typeof m?.content === "string" ? m.content
           : Array.isArray(m?.content) ? m.content.filter(b => b?.type === "text").map(b => b.text).join("\n")
           : "";
@@ -303,8 +944,31 @@ const plugin = {
           .replace(/^Sender \(untrusted metadata\):[\s\S]*?\n\n/m, "")
           .trim();
         // Skip very short messages like "/new", "/status", single-word queries
-        return cleaned.length > 10;
+        if (cleaned.length > 10) acc.push(cleaned);
-      });
+        return acc;
+      }, []);
+
+      // Check ignore patterns — skip sessions matching cron/subagent noise
+      const ignorePatterns = (config.ignorePatterns || [])
+        .filter(p => typeof p === "string" && p.length <= 100)
+        .map(p => { try { return new RegExp(p, "i"); } catch { log.warn?.("[memory-continuity] ignorePatterns: invalid regex, skipping: " + p); return null; } })
+        .filter(Boolean);
+
+      if (ignorePatterns.length > 0 && realUserMsgs.length > 0) {
+        const firstMsg = realUserMsgs[0];
+        if (ignorePatterns.some(re => re.test(firstMsg))) {
+          log.info?.("[memory-continuity] Session matches ignorePattern, skipping");
+          return;
+        }
+      }
+
+      // Write session log entry
+      writeSessionLog(ws, messages, config);
+
+      // Generate daily summary for previous day if needed
+      generateDailySummary(ws, config);
+      generateWeeklySummary(ws, config);
+      decayOldArchives(ws, config);
 
       const existing = readFile(statePath);
       const newState = extractStateFromMessages(messages);
@@ -331,11 +995,180 @@ const plugin = {
       if (!statePath) return;
 
       if (!readFile(statePath)) {
-        writeFile(statePath, STATE_TEMPLATE);
+        writeFile(statePath, stateTemplate());
         log.info?.("[memory-continuity] Created initial CURRENT_STATE.md");
       }
     }, { priority: 90 });
 
+    // ------------------------------------------------------------------
+    // HOOK 6: subagent_ended — recover child's unsurfaced results
+    // ------------------------------------------------------------------
+    api.on("subagent_ended", async (event, _ctx) => {
+      const config = getConfig();
+      if (config.subagentRecovery === false) return;
+
+      const parentWs = _ctx?.workspaceDir;
+      if (!parentWs) return;
+
+      const childSessionKey = event?.childSessionKey || _ctx?.childSessionKey;
+      if (!childSessionKey) {
+        log.info?.("[memory-continuity] subagent_ended: no childSessionKey, skipping");
+        return;
+      }
+
+      // Only process successful completions (not kills/errors)
+      const outcome = event?.outcome || "";
+      const reason = event?.reason || "";
+      if (outcome === "error" || reason === "killed" || reason === "spawn-failed") {
+        log.info?.("[memory-continuity] subagent_ended: child ended with " + (reason || outcome) + ", skipping recovery");
+        return;
+      }
+
+      try {
+        // Parse child agent ID from session key
+        const childMatch = childSessionKey.match(/^agent:([^:]+)/);
+        const childAgentId = childMatch?.[1];
+        if (!childAgentId) return;
+
+        const childWs = resolveAgentWorkspace(childAgentId);
+        if (!childWs) {
+          log.info?.("[memory-continuity] subagent_ended: cannot resolve child workspace for " + childAgentId);
+          return;
+        }
+
+        // Read child's state
+        const childStatePath = resolveStatePath(childWs);
+        const childMd = childStatePath ? readFile(childStatePath) : null;
+        if (!childMd) return;
+
+        // Extract unsurfaced results from child
+        const childUnsurfaced = extractUnsurfacedResults(childMd);
+        if (!childUnsurfaced) {
+          log.info?.("[memory-continuity] subagent_ended: no unsurfaced results in child state");
+          return;
+        }
+
+        // Also extract child's objective for context
+        const childObjective = extractSection(childMd, "Objective");
+
+        // Read parent's current state
+        const parentStatePath = resolveStatePath(parentWs);
+        if (!parentStatePath) return;
+
+        let parentMd = readFile(parentStatePath);
+        if (!parentMd) {
+          parentMd = stateTemplate();
+        }
+
+        // Build the recovery note
+        const now = new Date().toISOString();
+        const recoveryNote = [
+          `[${now}] Subagent "${childAgentId}" completed.`,
+          childObjective ? `  Task: ${childObjective.split("\n")[0].slice(0, 120)}` : "",
+          `  Result: ${childUnsurfaced.split("\n")[0].slice(0, 200)}`,
+        ].filter(Boolean).join("\n");
+
+        // Merge into parent's Unsurfaced Results section
+        const existingUnsurfaced = extractSection(parentMd, "Unsurfaced Results");
+        const mergedUnsurfaced = isMeaningful(existingUnsurfaced)
+          ? existingUnsurfaced + "\n" + recoveryNote
+          : recoveryNote;
+
+        // Token-aware truncation of merged results
+        if (estimateTokens(mergedUnsurfaced) > 500) {
+          const lines = mergedUnsurfaced.split("\n");
+          let kept = [];
+          let tokens = 0;
+          for (let i = lines.length - 1; i >= 0; i--) {
+            const lineTokens = estimateTokens(lines[i]);
+            if (tokens + lineTokens > 500) break;
+            kept.unshift(lines[i]);
+            tokens += lineTokens;
+          }
+          const truncated = kept.join("\n");
+          parentMd = parentMd.replace(
+            /## Unsurfaced Results\n[\s\S]*?(?=\n## |\n$|$)/,
+            "## Unsurfaced Results\n" + truncated
+          );
+        } else {
+          parentMd = parentMd.replace(
+            /## Unsurfaced Results\n[\s\S]*?(?=\n## |\n$|$)/,
+            "## Unsurfaced Results\n" + mergedUnsurfaced
+          );
+        }
+
+        // Update the timestamp
+        parentMd = parentMd.replace(
+          /^> Last updated:.*$/m,
+          `> Last updated: ${now}`
+        );
+
+        writeFile(parentStatePath, parentMd);
+        log.info?.("[memory-continuity] Recovered unsurfaced results from subagent " + childAgentId);
+      } catch (err) {
+        log.warn?.("[memory-continuity] subagent_ended recovery failed (non-fatal): " + err.message);
+      }
+    }, { priority: 50 });
+
+    // ------------------------------------------------------------------
+    // SERVICE: mc:recall — programmatic interface for other plugins
+    // ------------------------------------------------------------------
+    if (typeof api.exposeService === "function") {
+      api.exposeService("mc:recall", {
+        description: "Search memory history by topic keywords. Returns scored results.",
+
+        /**
+         * @param {Object} params
+         * @param {string} params.topic - Keywords to search for
+         * @param {number} [params.maxItems=5] - Maximum results to return
+         * @param {string} [params.format="structured"] - "structured" returns array of objects, "text" returns formatted string
+         * @returns {{ results: Array<{ date: string, type: string, score: number, summary: string }>, total: number }}
+         */
+        async handler(params, ctx) {
+          const topic = params?.topic;
+          if (!topic || typeof topic !== "string") {
+            return { error: "topic (string) is required", results: [], total: 0 };
+          }
+
+          const ws = ctx?.workspaceDir;
+          if (!ws) {
+            return { error: "no workspace context", results: [], total: 0 };
+          }
+
+          const maxItems = Math.min(params?.maxItems ?? 5, 20);
+
+          // Reuse the internal findRelevantHistory function
+          const textResult = findRelevantHistory(ws, topic, maxItems);
+
+          if (!textResult) {
+            return { results: [], total: 0 };
+          }
+
+          // For "text" format, return the raw string
+          if (params?.format === "text") {
+            return { text: textResult, total: 1 };
+          }
+
+          // For "structured" format, parse the result into objects
+          const lines = textResult.split("\n").filter(l => l.startsWith("["));
+          const results = lines.map(line => {
+            const dateMatch = line.match(/^\[([^\]]+)\]/);
+            const summary = line.replace(/^\[[^\]]+\]\s*/, "").trim();
+            return {
+              date: dateMatch?.[1] || "unknown",
+              type: "history",
+              score: 0,
+              summary,
+            };
+          });
+
+          return { results, total: results.length };
+        },
+      });
+
+      log.info?.("[memory-continuity] Exposed mc:recall service for inter-plugin use");
+    }
+
     log.info?.("[memory-continuity] Plugin registered successfully");
   },
 };

mc-plugin/index.js

@@ -0,0 +1,883 @@
+/**
+ * MC Plugin — registers /mc as a native slash command in OpenClaw gateway.
+ * Provides interactive commands for the Memory Continuity plugin.
+ */
+
+import fs from "node:fs";
+import path from "node:path";
+
+// ── Helpers ─────────────────────────────────────────────────────────────
+
+function mono(text) { return "```\n" + text + "\n```"; }
+
+const BASE = process.env.OPENCLAW_HOME || path.join(process.env.HOME || "/tmp", ".openclaw");
+const MAIN_WS = path.join(BASE, "workspace", "main", "memory");
+const EXTRA_WS = path.join(BASE, "workspaces");
+
+/** Discover all agent workspaces that have memory directories */
+function discoverAgents() {
+  const agents = [];
+
+  // Main workspace
+  if (fs.existsSync(path.join(MAIN_WS, "CURRENT_STATE.md"))) {
+    agents.push({ name: "main", memDir: MAIN_WS });
+  }
+
+  // Sub-agent workspaces
+  try {
+    for (const d of fs.readdirSync(EXTRA_WS)) {
+      if (!/^[\w-]+$/.test(d)) continue;
+      const memDir = path.join(EXTRA_WS, d, "memory");
+      if (fs.existsSync(path.join(memDir, "CURRENT_STATE.md"))) {
+        agents.push({ name: d, memDir });
+      }
+    }
+  } catch {}
+
+  return agents;
+}
+
+function resolveMemDir(agentName) {
+  if (!agentName || agentName === "main") return MAIN_WS;
+  const p = path.join(EXTRA_WS, agentName, "memory");
+  return fs.existsSync(p) ? p : null;
+}
+
+function readFile(fp) {
+  try { return fs.readFileSync(fp, "utf8"); } catch { return null; }
+}
+
+function extractSection(md, heading) {
+  const re = new RegExp(`^##\\s+${heading.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")}\\s*\\n([\\s\\S]*?)(?=\\n##\\s|$)`, "m");
+  return (md.match(re)?.[1] ?? "").trim();
+}
+
+function relTime(dateStr) {
+  try {
+    const diff = Date.now() - new Date(dateStr).getTime();
+    const mins = Math.floor(diff / 60000);
+    if (mins < 1) return "just now";
+    if (mins < 60) return `${mins}m ago`;
+    const hrs = Math.floor(mins / 60);
+    if (hrs < 24) return `${hrs}h ${mins % 60}m ago`;
+    return `${Math.floor(hrs / 24)}d ago`;
+  } catch { return dateStr || "unknown"; }
+}
+
+function truncate(s, max = 120) {
+  if (!s) return "(empty)";
+  const line = s.split("\n")[0];
+  return line.length > max ? line.slice(0, max) + "…" : line;
+}
+
+// ── Subcommand handlers ─────────────────────────────────────────────────
+
+function cmdState(args) {
+  const agent = args || "main";
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  const md = readFile(path.join(memDir, "CURRENT_STATE.md"));
+  if (!md) return `No state file for "${agent}".`;
+
+  const updated = md.match(/^> Last updated:\s*(.+)$/m)?.[1]?.trim();
+
+  let out = `State: ${agent}\n`;
+  out += `Updated: ${relTime(updated)}\n`;
+  out += "─────────────────────────────\n";
+  for (const section of ["Objective", "Current Step", "Key Decisions", "Next Action", "Blockers"]) {
+    const val = extractSection(md, section);
+    // Compact multi-line values
+    const compact = val.split("\n").slice(0, 3).join("\n");
+    out += `${section}:\n  ${compact || "(empty)"}\n\n`;
+  }
+  return out.trimEnd();
+}
+
+function cmdStateAll() {
+  const agents = discoverAgents();
+  if (!agents.length) return "No agents with memory found.";
+
+  let out = `Memory States (${agents.length} agents)\n`;
+  out += "─────────────────────────────\n";
+
+  for (const { name, memDir } of agents) {
+    const md = readFile(path.join(memDir, "CURRENT_STATE.md"));
+    if (!md) { out += `${name.padEnd(20)} (no state)\n`; continue; }
+
+    const updated = md.match(/^> Last updated:\s*(.+)$/m)?.[1]?.trim();
+    const objective = extractSection(md, "Objective");
+
+    out += `${name.padEnd(20)} ${relTime(updated).padEnd(10)} ${truncate(objective, 50)}\n`;
+  }
+  return out.trimEnd();
+}
+
+function cmdHistory(args) {
+  const agent = args || "main";
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  const archiveDir = path.join(memDir, "session_archive");
+  let files;
+  try { files = fs.readdirSync(archiveDir).filter(f => f.endsWith(".md")).sort().reverse(); }
+  catch { return `No archive for "${agent}".`; }
+
+  if (!files.length) return `No archived sessions for "${agent}".`;
+
+  let out = `Session Archive: ${agent} (${files.length} entries)\n`;
+  out += "─────────────────────────────\n";
+  out += `${"#".padStart(3)} ${"Timestamp".padEnd(20)} Objective\n`;
+  out += "─".repeat(60) + "\n";
+
+  for (let i = 0; i < Math.min(files.length, 20); i++) {
+    const f = files[i];
+    const ts = f.replace(".md", "").replace(/_/g, " ");
+    const md = readFile(path.join(archiveDir, f));
+    const obj = md ? truncate(extractSection(md, "Objective"), 35) : "?";
+    out += `${String(i + 1).padStart(3)} ${ts.padEnd(20)} ${obj}\n`;
+  }
+
+  if (files.length > 20) out += `\n  ... and ${files.length - 20} more`;
+  return out.trimEnd();
+}
+
+function cmdRestore(args) {
+  const parts = (args || "").trim().split(/\s+/);
+  const idx = parseInt(parts[0]);
+  const agent = parts[1] || "main";
+
+  if (isNaN(idx) || idx < 1) return "Usage: /mc restore <N> [agent]\nN = archive number from /mc history";
+
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  const archiveDir = path.join(memDir, "session_archive");
+  let files;
+  try { files = fs.readdirSync(archiveDir).filter(f => f.endsWith(".md")).sort().reverse(); }
+  catch { return `No archive for "${agent}".`; }
+
+  if (idx > files.length) return `Only ${files.length} archives available.`;
+
+  const target = files[idx - 1];
+  const content = readFile(path.join(archiveDir, target));
+  if (!content) return `Failed to read archive ${target}.`;
+
+  // Backup current state first
+  const statePath = path.join(memDir, "CURRENT_STATE.md");
+  const current = readFile(statePath);
+  if (current) {
+    const bak = path.join(memDir, "CURRENT_STATE.md.bak");
+    fs.writeFileSync(bak, current, "utf8");
+  }
+
+  fs.writeFileSync(statePath, content, "utf8");
+  return `✓ Restored archive #${idx} (${target.replace(".md", "")})\n  Previous state backed up to CURRENT_STATE.md.bak`;
+}
+
+function cmdClear(args) {
+  const agent = args || "main";
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  const statePath = path.join(memDir, "CURRENT_STATE.md");
+  const current = readFile(statePath);
+
+  if (current) {
+    // Archive before clearing
+    const archiveDir = path.join(memDir, "session_archive");
+    fs.mkdirSync(archiveDir, { recursive: true });
+    const now = new Date();
+    const pad = (n) => String(n).padStart(2, "0");
+    const stamp = `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}_${pad(now.getHours())}-${pad(now.getMinutes())}`;
+    fs.writeFileSync(path.join(archiveDir, `${stamp}.md`), current, "utf8");
+  }
+
+  const template = `# Current State
+> Last updated: ${new Date().toISOString()}
+
+## Objective
+None
+
+## Current Step
+None
+
+## Key Decisions
+- None
+
+## Next Action
+None
+
+## Blockers
+None
+
+## Unsurfaced Results
+None
+`;
+  fs.writeFileSync(statePath, template, "utf8");
+  return `✓ State cleared for "${agent}"\n  Previous state archived.`;
+}
+
+function cmdSearch(args) {
+  if (!args) return "Usage: /mc search <keyword> [agent]\nSearches state, archives, sessions, and summaries.";
+
+  const parts = args.trim().split(/\s+/);
+  let keyword, agent;
+  const agents = discoverAgents();
+  const agentNames = new Set(agents.map(a => a.name));
+
+  if (parts.length > 1 && agentNames.has(parts[parts.length - 1])) {
+    agent = parts.pop();
+    keyword = parts.join(" ");
+  } else {
+    keyword = parts.join(" ");
+    agent = null;
+  }
+
+  const escaped = keyword.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+  const re = new RegExp(escaped, "i");
+  const results = [];
+
+  const searchAgents = agent ? [{ name: agent, memDir: resolveMemDir(agent) }] : agents;
+
+  for (const { name, memDir } of searchAgents) {
+    if (!memDir) continue;
+
+    // 1. Search current state
+    const state = readFile(path.join(memDir, "CURRENT_STATE.md"));
+    if (state && re.test(state)) {
+      re.lastIndex = 0;
+      const lines = state.split("\n").filter(l => re.test(l));
+      results.push({ agent: name, source: "CURRENT_STATE", type: "state", matches: lines.slice(0, 3) });
+    }
+
+    // 2. Search archives (most recent 30)
+    const archiveDir = path.join(memDir, "session_archive");
+    try {
+      const files = fs.readdirSync(archiveDir).filter(f => f.endsWith(".md")).sort().reverse();
+      for (const f of files.slice(0, 30)) {
+        re.lastIndex = 0;
+        const content = readFile(path.join(archiveDir, f));
+        if (content && re.test(content)) {
+          re.lastIndex = 0;
+          const lines = content.split("\n").filter(l => re.test(l));
+          results.push({ agent: name, source: f.replace(".md", ""), type: "archive", matches: lines.slice(0, 2) });
+        }
+      }
+    } catch {}
+
+    // 3. Search session logs (most recent 14 days)
+    const sessionsDir = path.join(memDir, "sessions");
+    try {
+      const files = fs.readdirSync(sessionsDir).filter(f => f.endsWith(".md")).sort().reverse();
+      for (const f of files.slice(0, 14)) {
+        re.lastIndex = 0;
+        const content = readFile(path.join(sessionsDir, f));
+        if (content && re.test(content)) {
+          re.lastIndex = 0;
+          const lines = content.split("\n").filter(l => re.test(l));
+          results.push({ agent: name, source: f.replace(".md", ""), type: "session", matches: lines.slice(0, 2) });
+        }
+      }
+    } catch {}
+
+    // 4. Search summaries (daily + weekly)
+    for (const sub of ["daily", "weekly"]) {
+      const sumDir = path.join(memDir, "summaries", sub);
+      try {
+        const files = fs.readdirSync(sumDir).filter(f => f.endsWith(".md")).sort().reverse();
+        for (const f of files.slice(0, 10)) {
+          re.lastIndex = 0;
+          const content = readFile(path.join(sumDir, f));
+          if (content && re.test(content)) {
+            re.lastIndex = 0;
+            const lines = content.split("\n").filter(l => re.test(l));
+            results.push({ agent: name, source: f.replace(".md", ""), type: sub, matches: lines.slice(0, 2) });
+          }
+        }
+      } catch {}
+    }
+  }
+
+  if (!results.length) return `No matches for "${keyword}".`;
+
+  // Group by type for clearer output
+  let out = `Search: "${keyword}" (${results.length} hits)\n`;
+  out += "─────────────────────────────\n";
+
+  const typeOrder = ["state", "archive", "session", "daily", "weekly"];
+  const typeLabels = { state: "State", archive: "Archive", session: "Session", daily: "Daily", weekly: "Weekly" };
+
+  for (const type of typeOrder) {
+    const group = results.filter(r => r.type === type);
+    if (group.length === 0) continue;
+
+    out += `\n[${typeLabels[type]}]\n`;
+    for (const r of group.slice(0, 5)) {
+      out += `  ${r.agent}/${r.source}\n`;
+      for (const line of r.matches) {
+        out += `    ${truncate(line.trim(), 75)}\n`;
+      }
+    }
+    if (group.length > 5) out += `  ... +${group.length - 5} more\n`;
+  }
+
+  return out.trimEnd();
+}
+
+function cmdSettings(args) {
+  // Read memory-continuity config from openclaw.json
+  const configPath = path.join(BASE, "openclaw.json");
+  const raw = readFile(configPath);
+  if (!raw) return "Cannot read openclaw.json";
+
+  let config;
+  try { config = JSON.parse(raw); } catch { return "Cannot parse openclaw.json"; }
+
+  const mcConfig = config?.plugins?.entries?.["memory-continuity"]?.config
+    || config?.entries?.["memory-continuity"]?.config
+    || {};
+
+  if (!args) {
+    const defaults = {
+      maxStateLines: { value: mcConfig.maxStateLines ?? 50, desc: "Max lines before compress warning" },
+      archiveOnNew: { value: mcConfig.archiveOnNew ?? true, desc: "Archive state on /new" },
+      autoExtract: { value: mcConfig.autoExtract ?? true, desc: "Auto-extract state at agent_end" },
+      maxArchiveCount: { value: mcConfig.maxArchiveCount ?? 20, desc: "Max archive files kept" },
+    };
+
+    let out = "MC Settings\n─────────────────────────────\n";
+    for (const [k, v] of Object.entries(defaults)) {
+      out += `${k.padEnd(18)} ${String(v.value).padStart(6)}   ${v.desc}\n`;
+    }
+
+    // Show stats
+    const agents = discoverAgents();
+    out += "\nStats:\n";
+    out += `  Agents with memory: ${agents.length}\n`;
+    let totalArchives = 0;
+    for (const { memDir } of agents) {
+      try {
+        totalArchives += fs.readdirSync(path.join(memDir, "session_archive")).filter(f => f.endsWith(".md")).length;
+      } catch {}
+    }
+    out += `  Total archives:     ${totalArchives}\n`;
+    return out.trimEnd();
+  }
+
+  // Parse "key value" for settings update
+  const parts = args.trim().split(/\s+/);
+  if (parts.length < 2 || parts[0] === "--help" || parts[0] === "-h") {
+    return "Usage: /mc settings <key> <value>\nKeys: maxStateLines, archiveOnNew, autoExtract, maxArchiveCount";
+  }
+
+  const [key, val] = parts;
+  const validKeys = ["maxStateLines", "archiveOnNew", "autoExtract", "maxArchiveCount"];
+  if (!validKeys.includes(key)) return `Unknown key: ${key}\nValid: ${validKeys.join(", ")}`;
+
+  let parsed;
+  if (val === "true") parsed = true;
+  else if (val === "false") parsed = false;
+  else if (!isNaN(Number(val))) parsed = Number(val);
+  else return `Cannot parse value: ${val}`;
+
+  // Update openclaw.json
+  try {
+    // Ensure path exists
+    if (!config.entries) config.entries = {};
+    if (!config.entries["memory-continuity"]) config.entries["memory-continuity"] = { enabled: true };
+    if (!config.entries["memory-continuity"].config) config.entries["memory-continuity"].config = {};
+    config.entries["memory-continuity"].config[key] = parsed;
+    fs.writeFileSync(configPath, JSON.stringify(config, null, 2), "utf8");
+    return `✓ ${key} = ${parsed}\n  Restart gateway to apply.`;
+  } catch (e) {
+    return `✗ Failed to write config: ${e.message}`;
+  }
+}
+
+function cmdCompact(args) {
+  const agent = args || "main";
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  const statePath = path.join(memDir, "CURRENT_STATE.md");
+  const md = readFile(statePath);
+  if (!md) return `No state for "${agent}".`;
+
+  const lines = md.split("\n");
+  const originalLen = lines.length;
+
+  // Keep headers and first meaningful line of each section
+  const compacted = [];
+  let inSection = false;
+  let sectionLines = 0;
+
+  for (const line of lines) {
+    if (line.startsWith("# ") || line.startsWith("> Last updated")) {
+      compacted.push(line);
+      inSection = false;
+    } else if (line.startsWith("## ")) {
+      compacted.push(line);
+      inSection = true;
+      sectionLines = 0;
+    } else if (inSection) {
+      sectionLines++;
+      if (sectionLines <= 3 || line.startsWith("- ")) {
+        compacted.push(line);
+      }
+    } else {
+      compacted.push(line);
+    }
+  }
+
+  // Update timestamp
+  const result = compacted.join("\n")
+    .replace(/^> Last updated:.*$/m, `> Last updated: ${new Date().toISOString()}`);
+
+  fs.writeFileSync(statePath, result, "utf8");
+  return `✓ Compacted "${agent}" state: ${originalLen} → ${compacted.length} lines`;
+}
+
+function cmdExport(args) {
+  const parts = (args || "").trim().split(/\s+/);
+
+  // Parse args: [agent|all] [--from YYYY-MM-DD] [--to YYYY-MM-DD] [--tag #tag]
+  let agent = "all";
+  let fromDate = null;
+  let toDate = null;
+  let filterTag = null;
+
+  for (let i = 0; i < parts.length; i++) {
+    if (parts[i] === "--from" && parts[i + 1]) { fromDate = parts[++i]; continue; }
+    if (parts[i] === "--to" && parts[i + 1]) { toDate = parts[++i]; continue; }
+    if (parts[i] === "--tag" && parts[i + 1]) { filterTag = parts[++i].toLowerCase(); continue; }
+    if (parts[i] && !parts[i].startsWith("-")) agent = parts[i];
+  }
+
+  const agents = agent === "all" ? discoverAgents() : [{ name: agent, memDir: resolveMemDir(agent) }];
+  if (agents.length === 0 || !agents[0]?.memDir) return `Agent "${agent}" not found.`;
+
+  const exportDir = path.join(BASE, "exports");
+  fs.mkdirSync(exportDir, { recursive: true });
+
+  const now = new Date();
+  const pad = (n) => String(n).padStart(2, "0");
+  const stamp = `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}_${pad(now.getHours())}-${pad(now.getMinutes())}`;
+  const exportFile = path.join(exportDir, `mc-export-${stamp}.md`);
+
+  let content = `# Memory Continuity Export\n> Exported: ${now.toISOString()}\n`;
+  if (fromDate || toDate) content += `> Date range: ${fromDate || "start"} to ${toDate || "now"}\n`;
+  if (filterTag) content += `> Tag filter: ${filterTag}\n`;
+  content += "\n";
+
+  const matchesDateRange = (filename) => {
+    if (!fromDate && !toDate) return true;
+    const dateMatch = filename.match(/(\d{4}-\d{2}-\d{2})/);
+    if (!dateMatch) return true; // Include files without dates
+    const fileDate = dateMatch[1];
+    if (fromDate && fileDate < fromDate) return false;
+    if (toDate && fileDate > toDate) return false;
+    return true;
+  };
+
+  const matchesTag = (text) => {
+    if (!filterTag) return true;
+    return text.toLowerCase().includes(filterTag);
+  };
+
+  for (const { name, memDir } of agents) {
+    if (!memDir) continue;
+    content += `---\n# Agent: ${name}\n\n`;
+
+    // Current state
+    const state = readFile(path.join(memDir, "CURRENT_STATE.md"));
+    if (state && matchesTag(state)) {
+      content += `## Current State\n\n${state}\n\n`;
+    }
+
+    // Archives (filtered)
+    const archiveDir = path.join(memDir, "session_archive");
+    try {
+      const files = fs.readdirSync(archiveDir).filter(f => f.endsWith(".md") && matchesDateRange(f)).sort().reverse();
+      if (files.length) {
+        content += `## Archives (${files.length})\n\n`;
+        for (const f of files) {
+          const ac = readFile(path.join(archiveDir, f));
+          if (ac && matchesTag(ac)) content += `### ${f.replace(".md", "")}\n\n${ac}\n\n`;
+        }
+      }
+    } catch {}
+
+    // Session logs (filtered)
+    const sessionsDir = path.join(memDir, "sessions");
+    try {
+      const files = fs.readdirSync(sessionsDir).filter(f => f.endsWith(".md") && matchesDateRange(f)).sort().reverse();
+      if (files.length) {
+        content += `## Session Logs (${files.length} days)\n\n`;
+        for (const f of files) {
+          const sc = readFile(path.join(sessionsDir, f));
+          if (sc && matchesTag(sc)) content += `### ${f.replace(".md", "")}\n\n${sc}\n\n`;
+        }
+      }
+    } catch {}
+
+    // Summaries (filtered)
+    for (const sub of ["daily", "weekly"]) {
+      const sumDir = path.join(memDir, "summaries", sub);
+      try {
+        const files = fs.readdirSync(sumDir).filter(f => f.endsWith(".md") && matchesDateRange(f)).sort().reverse();
+        if (files.length) {
+          content += `## ${sub.charAt(0).toUpperCase() + sub.slice(1)} Summaries (${files.length})\n\n`;
+          for (const f of files) {
+            const sm = readFile(path.join(sumDir, f));
+            if (sm && matchesTag(sm)) content += `### ${f.replace(".md", "")}\n\n${sm}\n\n`;
+          }
+        }
+      } catch {}
+    }
+  }
+
+  fs.writeFileSync(exportFile, content, "utf8");
+  const sizeKB = (Buffer.byteLength(content) / 1024).toFixed(1);
+  return `✓ Exported to:\n  ${exportFile}\n  ${agents.length} agent(s), ${sizeKB} KB`;
+}
+
+function cmdSessions(args) {
+  const parts = (args || "").trim().split(/\s+/);
+  const agent = parts.find(p => !p.startsWith("-") && !p.startsWith("2")) || "main";
+  const dateArg = parts.find(p => /^\d{4}-\d{2}-\d{2}$/.test(p));
+
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  const sessionsDir = path.join(memDir, "sessions");
+  let files;
+  try { files = fs.readdirSync(sessionsDir).filter(f => f.endsWith(".md")).sort().reverse(); }
+  catch { return `No session logs for "${agent}".`; }
+
+  if (!files.length) return `No session logs for "${agent}".`;
+
+  // If date specified, show that day's log
+  if (dateArg) {
+    const target = `${dateArg}.md`;
+    const content = readFile(path.join(sessionsDir, target));
+    if (!content) return `No session log for ${dateArg}.`;
+    // Truncate to last 50 lines to stay compact
+    const lines = content.split("\n");
+    const shown = lines.length > 50 ? lines.slice(-50) : lines;
+    let out = shown.join("\n");
+    if (lines.length > 50) out = `... (${lines.length - 50} earlier lines omitted)\n\n` + out;
+    return out;
+  }
+
+  // List recent session logs
+  let out = `Session Logs: ${agent} (${files.length} days)\n`;
+  out += "─────────────────────────────\n";
+
+  for (const f of files.slice(0, 14)) {
+    const date = f.replace(".md", "");
+    const content = readFile(path.join(sessionsDir, f));
+    // Count session entries (### HH:MM headers)
+    const sessionCount = content ? (content.match(/^### \d{2}:\d{2}/gm) || []).length : 0;
+    out += `${date}   ${String(sessionCount).padStart(3)} session(s)\n`;
+  }
+
+  if (files.length > 14) out += `\n  ... and ${files.length - 14} more days`;
+  out += `\n\nUse /mc sessions <YYYY-MM-DD> to view a specific day.`;
+  return out.trimEnd();
+}
+
+function cmdTags(args) {
+  const agent = args || "main";
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  const tagsFile = path.join(memDir, "tags.md");
+  const content = readFile(tagsFile);
+  if (!content) return `No tags for "${agent}".`;
+
+  // Parse tags and their date counts
+  const tagSections = content.split(/^## /gm).filter(s => s.trim());
+  if (tagSections.length === 0) return `No tags for "${agent}".`;
+
+  let out = `Tags: ${agent} (${tagSections.length} tags)\n`;
+  out += "─────────────────────────────\n";
+
+  const tags = [];
+  for (const section of tagSections) {
+    const lines = section.trim().split("\n");
+    const tag = lines[0].trim();
+    if (!tag.startsWith("#")) continue;
+    const dates = lines.filter(l => l.startsWith("- "));
+    tags.push({ tag, count: dates.length, latest: dates[0]?.replace("- ", "") || "?" });
+  }
+
+  // Sort by count descending
+  tags.sort((a, b) => b.count - a.count);
+
+  for (const { tag, count, latest } of tags.slice(0, 30)) {
+    out += `${tag.padEnd(25)} ${String(count).padStart(3)} days   latest: ${latest}\n`;
+  }
+
+  if (tags.length > 30) out += `\n  ... and ${tags.length - 30} more tags`;
+  return out.trimEnd();
+}
+
+function cmdSummary(args) {
+  const parts = (args || "").trim().split(/\s+/);
+  const agent = parts.find(p => !p.startsWith("-") && !/^\d{4}/.test(p) && p !== "daily" && p !== "weekly") || "main";
+  const typeArg = parts.find(p => p === "daily" || p === "weekly");
+  const dateArg = parts.find(p => /^\d{4}/.test(p));
+
+  const memDir = resolveMemDir(agent);
+  if (!memDir) return `Agent "${agent}" not found.`;
+
+  // If specific date given, show that summary
+  if (dateArg) {
+    const type = typeArg || (dateArg.includes("W") ? "weekly" : "daily");
+    const sumFile = path.join(memDir, "summaries", type, `${dateArg}.md`);
+    const content = readFile(sumFile);
+    if (!content) return `No ${type} summary for ${dateArg}.`;
+    return content;
+  }
+
+  // List available summaries
+  const types = typeArg ? [typeArg] : ["daily", "weekly"];
+  let out = `Summaries: ${agent}\n`;
+  out += "─────────────────────────────\n";
+
+  for (const type of types) {
+    const sumDir = path.join(memDir, "summaries", type);
+    let files;
+    try { files = fs.readdirSync(sumDir).filter(f => f.endsWith(".md")).sort().reverse(); }
+    catch { continue; }
+
+    if (files.length === 0) continue;
+
+    out += `\n[${type.charAt(0).toUpperCase() + type.slice(1)}] (${files.length})\n`;
+    for (const f of files.slice(0, 10)) {
+      const name = f.replace(".md", "");
+      const content = readFile(path.join(sumDir, f));
+      const sessMatch = content?.match(/\*\*(?:Total s|S)essions:\*\*\s*(\d+)/);
+      const sessions = sessMatch ? sessMatch[1] : "?";
+      out += `  ${name}   ${sessions} session(s)\n`;
+    }
+    if (files.length > 10) out += `  ... +${files.length - 10} more\n`;
+  }
+
+  out += `\nUse /mc summary <YYYY-MM-DD> or /mc summary <YYYY-Www> to view details.`;
+  return out.trimEnd();
+}
+
+function cmdRecall(args) {
+  if (!args) return "Usage: /mc recall <topic>\nSearches history and returns the most relevant entries for context injection.";
+
+  const topic = args.trim();
+  const agents = discoverAgents();
+  if (agents.length === 0) return "No agents with memory found.";
+
+  // Search across all agents' session logs and summaries
+  const words = topic
+    .replace(/[^\w\u4e00-\u9fff\u3400-\u4dbf-]/g, " ")
+    .split(/\s+/)
+    .filter(w => w.length > 2)
+    .map(w => w.toLowerCase());
+
+  if (words.length === 0) return "Need more specific topic keywords.";
+
+  const scored = [];
+
+  for (const { name, memDir } of agents) {
+    if (!memDir) continue;
+
+    // Search session logs
+    const sessionsDir = path.join(memDir, "sessions");
+    try {
+      const files = fs.readdirSync(sessionsDir).filter(f => f.endsWith(".md")).sort().reverse();
+      for (const f of files.slice(0, 14)) {
+        const content = readFile(path.join(sessionsDir, f));
+        if (!content) continue;
+        const entries = content.split(/^### /gm).filter(e => e.trim());
+        for (const entry of entries) {
+          let score = 0;
+          const lower = entry.toLowerCase();
+          for (const w of words) {
+            if (lower.includes(w)) score++;
+          }
+          if (score >= 2) {
+            const topicMatch = entry.match(/\*\*Topic:\*\*\s*(.+)/);
+            const time = entry.match(/^(\d{2}:\d{2})/)?.[1] || "";
+            scored.push({
+              agent: name,
+              date: `${f.replace(".md", "")} ${time}`,
+              score,
+              text: topicMatch?.[1] || entry.split("\n")[0].slice(0, 80)
+            });
+          }
+        }
+      }
+    } catch {}
+
+    // Search daily summaries
+    const dailyDir = path.join(memDir, "summaries", "daily");
+    try {
+      const files = fs.readdirSync(dailyDir).filter(f => f.endsWith(".md")).sort().reverse();
+      for (const f of files.slice(0, 14)) {
+        const content = readFile(path.join(dailyDir, f));
+        if (!content) continue;
+        let score = 0;
+        const lower = content.toLowerCase();
+        for (const w of words) {
+          if (lower.includes(w)) score++;
+        }
+        if (score >= 2) {
+          const topicsMatch = content.match(/## (?:Key )?Topics\n([\s\S]*?)(?:\n##|$)/);
+          const topics = topicsMatch ? topicsMatch[1].trim().split("\n").slice(0, 3).join("; ") : "";
+          scored.push({
+            agent: name,
+            date: f.replace(".md", ""),
+            score,
+            text: topics || "(daily summary)"
+          });
+        }
+      }
+    } catch {}
+
+    // Search archives
+    const archiveDir = path.join(memDir, "session_archive");
+    try {
+      const files = fs.readdirSync(archiveDir).filter(f => f.endsWith(".md")).sort().reverse();
+      for (const f of files.slice(0, 20)) {
+        const content = readFile(path.join(archiveDir, f));
+        if (!content) continue;
+        let score = 0;
+        const lower = content.toLowerCase();
+        for (const w of words) {
+          if (lower.includes(w)) score++;
+        }
+        if (score >= 2) {
+          const objMatch = content.match(/## Objective\n(.+)/);
+          scored.push({
+            agent: name,
+            date: f.replace(".md", "").replace(/_/g, " "),
+            score,
+            text: objMatch?.[1]?.slice(0, 80) || "(archived state)"
+          });
+        }
+      }
+    } catch {}
+  }
+
+  if (scored.length === 0) return `No relevant history found for "${topic}".`;
+
+  scored.sort((a, b) => b.score - a.score);
+  const top = scored.slice(0, 10);
+
+  let out = `Recall: "${topic}" (${scored.length} matches, showing top ${top.length})\n`;
+  out += "─────────────────────────────\n";
+  for (const item of top) {
+    out += `[${item.agent}] ${item.date}  (score: ${item.score})\n`;
+    out += `  ${truncate(item.text, 80)}\n\n`;
+  }
+  return out.trimEnd();
+}
+
+function cmdSubagents(args) {
+  const agents = discoverAgents();
+  if (agents.length === 0) return "No agents with memory found.";
+
+  let out = "Subagent State Overview\n";
+  out += "═══════════════════════\n\n";
+
+  for (const { name, memDir } of agents) {
+    const statePath = path.join(memDir, "CURRENT_STATE.md");
+    const content = readFile(statePath);
+    if (!content) {
+      out += `[${name}] No state file\n\n`;
+      continue;
+    }
+
+    const objMatch = content.match(/## Objective\n([\s\S]*?)(?=\n## )/);
+    const unsurfMatch = content.match(/## Unsurfaced Results\n([\s\S]*?)(?=\n## |$)/);
+    const updatedMatch = content.match(/^> Last updated:\s*(.+)$/m);
+
+    const objective = objMatch?.[1]?.trim() || "None";
+    const unsurfaced = unsurfMatch?.[1]?.trim() || "None";
+    const updated = updatedMatch?.[1]?.trim() || "unknown";
+
+    out += `[${name}] Updated: ${updated}\n`;
+    out += `  Objective: ${truncate(objective.split("\n")[0], 80)}\n`;
+    if (unsurfaced !== "None") {
+      out += `  Unsurfaced: ${truncate(unsurfaced.split("\n")[0], 80)}\n`;
+    }
+    out += "\n";
+  }
+
+  return out.trimEnd();
+}
+
+function cmdHelp() {
+  return `MC Commands (Memory Continuity)
+─────────────────────────────
+/mc state [agent]       View current state (default: main)
+/mc state --all         Overview of all agents
+/mc sessions [date]     Session logs (daily activity)
+/mc summary [daily|weekly] List or view summaries
+/mc tags [agent]          View tag index
+/mc history [agent]     List archived sessions
+/mc restore <N> [agent] Restore archive #N
+/mc clear [agent]       Clear state (archives first)
+/mc search <keyword>    Search across all memory
+/mc settings            View MC settings
+/mc settings <k> <v>    Update a setting
+/mc compact [agent]     Compress state file
+/mc export [agent|all]  Export (--from/--to/--tag)
+/mc recall <topic>      Find relevant history by topic
+/mc subagents           Subagent state overview across workspaces`;
+}
+
+// ── Plugin entry point ──────────────────────────────────────────────────
+
+export default function (api) {
+  console.log("[mc] MC plugin loading, registering /mc command...");
+  api.registerCommand({
+    name: "mc",
+    description: "Memory Continuity commands — state, history, search, settings, etc.",
+    acceptsArgs: true,
+    requireAuth: true,
+    handler: async (ctx) => {
+      const raw = (ctx.args || "").trim();
+      const spaceIdx = raw.indexOf(" ");
+      const subcmd = spaceIdx === -1 ? raw : raw.slice(0, spaceIdx);
+      const subargs = spaceIdx === -1 ? "" : raw.slice(spaceIdx + 1).trim();
+
+      try {
+        let text;
+        switch (subcmd) {
+          case "state":
+            text = subargs === "--all" ? cmdStateAll() : cmdState(subargs || null);
+            break;
+          case "sessions":  text = cmdSessions(subargs || null); break;
+          case "history":   text = cmdHistory(subargs || null); break;
+          case "restore":   text = cmdRestore(subargs); break;
+          case "clear":     text = cmdClear(subargs || null); break;
+          case "search":    text = cmdSearch(subargs); break;
+          case "settings":  text = cmdSettings(subargs || null); break;
+          case "compact":   text = cmdCompact(subargs || null); break;
+          case "export":    text = cmdExport(subargs || null); break;
+          case "tags":     text = cmdTags(subargs || null); break;
+          case "summary":  text = cmdSummary(subargs || null); break;
+          case "recall":   text = cmdRecall(subargs); break;
+          case "subagents": text = cmdSubagents(subargs || null); break;
+          case "help": case "--help": case "-h": case "":
+            text = cmdHelp(); break;
+          default:
+            text = `Unknown subcommand: ${subcmd}\n\n${cmdHelp()}`;
+        }
+        return { text: mono(text) };
+      } catch (err) {
+        return { text: `MC error: ${err.message}` };
+      }
+    },
+  });
+}

mc-plugin/openclaw.plugin.json

@@ -0,0 +1,23 @@
+{
+  "id": "mc",
+  "name": "Memory Continuity Commands",
+  "description": "Slash commands for Memory Continuity — /mc state, /mc history, /mc search, /mc settings, etc.",
+  "version": "2.1.0",
+  "author": { "name": "dtzp555-max", "url": "https://github.com/dtzp555-max" },
+  "license": "MIT",
+  "category": "commands",
+  "tags": ["memory", "commands", "search", "recall"],
+  "icon": "terminal",
+  "requires": ["memory-continuity"],
+  "configSchema": {
+    "type": "object",
+    "additionalProperties": false,
+    "properties": {
+      "memoryDir": {
+        "type": "string",
+        "default": "",
+        "description": "Override memory directory path (auto-detected from workspace if empty)"
+      }
+    }
+  }
+}

mc-plugin/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "mc-plugin",
+  "version": "2.1.0",
+  "description": "Slash commands for Memory Continuity — /mc state, /mc history, /mc search, etc.",
+  "main": "index.js",
+  "type": "module",
+  "keywords": ["openclaw", "plugin", "memory", "continuity", "commands"],
+  "license": "MIT",
+  "openclaw": {
+    "type": "plugin",
+    "id": "mc",
+    "pluginManifest": "openclaw.plugin.json"
+  }
+}

openclaw.plugin.json

@@ -2,8 +2,26 @@
   "id": "memory-continuity",
   "name": "Memory Continuity",
   "description": "Preserves working state across /new, reset, compaction, and gateway restarts via a simple markdown checkpoint file.",
-  "version": "2.7.0",
+  "version": "5.0.1",
+  "author": { "name": "dtzp555-max", "url": "https://github.com/dtzp555-max" },
+  "license": "MIT",
+  "repository": "https://github.com/dtzp555-max/memory-continuity",
+  "category": "memory",
+  "tags": ["memory", "continuity", "state", "recovery", "markdown", "zero-dependency"],
+  "icon": "brain",
+  "minOpenClawVersion": "2026.3.0",
   "source": "https://github.com/dtzp555-max/memory-continuity",
+  "interop": {
+    "complements": [
+      {
+        "id": "lossless-claw",
+        "reason": "MC uses lifecycle hooks for working-state recovery; lossless-claw uses the contextEngine slot for lossless context compression. They occupy different plugin slots and serve different purposes — install both for best results."
+      }
+    ],
+    "conflicts": [],
+    "slot": "hooks-only",
+    "slotNote": "Does NOT occupy the contextEngine slot. Safe to run alongside any context engine."
+  },
   "configSchema": {
     "type": "object",
     "additionalProperties": false,
@@ -27,6 +45,51 @@
         "type": "number",
         "default": 20,
         "description": "Maximum number of archive files to keep in session_archive/"
+      },
+      "ignorePatterns": {
+        "type": "array",
+        "default": [],
+        "description": "Regex patterns to ignore sessions (e.g. cron jobs, subagent noise). Matched against first user message."
+      },
+      "sessionLogging": {
+        "type": "boolean",
+        "default": true,
+        "description": "Write session summaries to memory/sessions/ daily logs"
+      },
+      "tailProtectCount": {
+        "type": "number",
+        "default": 3,
+        "description": "Number of recent critical message pairs to protect during compaction"
+      },
+      "summaryEnabled": {
+        "type": "boolean",
+        "default": true,
+        "description": "Generate daily and weekly summaries from session logs"
+      },
+      "relevanceInjection": {
+        "type": "boolean",
+        "default": true,
+        "description": "Inject relevant historical context at session start"
+      },
+      "maxRelevanceItems": {
+        "type": "number",
+        "default": 3,
+        "description": "Maximum number of relevant history items to inject"
+      },
+      "archiveDecayDays": {
+        "type": "number",
+        "default": 30,
+        "description": "Days before archives move to cold storage (0 = disabled)"
+      },
+      "subagentSeed": {
+        "type": "boolean",
+        "default": true,
+        "description": "Inject parent working state into subagent context at startup"
+      },
+      "subagentRecovery": {
+        "type": "boolean",
+        "default": true,
+        "description": "Recover unsurfaced results from completed subagents back to parent"
       }
     }
   },
@@ -46,6 +109,42 @@
     "maxArchiveCount": {
       "label": "Max archive files",
       "help": "Old archives are auto-deleted when this limit is reached"
+    },
+    "ignorePatterns": {
+      "label": "Ignore patterns",
+      "help": "Skip state extraction for sessions matching these patterns (regex)"
+    },
+    "sessionLogging": {
+      "label": "Session logging",
+      "help": "Append session summaries to daily markdown logs"
+    },
+    "tailProtectCount": {
+      "label": "Tail protect count",
+      "help": "Keep N recent user/assistant pairs visible after compaction"
+    },
+    "summaryEnabled": {
+      "label": "Summary generation",
+      "help": "Auto-generate daily/weekly summaries from session logs"
+    },
+    "relevanceInjection": {
+      "label": "Relevance injection",
+      "help": "Inject related history when starting a new session"
+    },
+    "maxRelevanceItems": {
+      "label": "Max relevance items",
+      "help": "How many related history entries to inject (2-5)"
+    },
+    "archiveDecayDays": {
+      "label": "Archive decay days",
+      "help": "Move archives older than N days to cold/ subfolder (0 to disable)"
+    },
+    "subagentSeed": {
+      "label": "Subagent seeding",
+      "help": "Give subagents parent context so they understand the broader task"
+    },
+    "subagentRecovery": {
+      "label": "Subagent recovery",
+      "help": "Pull completed subagent results back into parent state"
     }
   }
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "memory-continuity",
-  "version": "2.7.0",
+  "version": "5.0.1",
   "description": "Zero-dependency memory continuity for OpenClaw — plain markdown, lifecycle hooks, no vector DB.",
   "main": "index.js",
   "type": "module",
@@ -8,7 +8,7 @@
     "type": "git",
     "url": "https://github.com/dtzp555-max/memory-continuity.git"
   },
-  "keywords": ["openclaw", "plugin", "memory", "continuity"],
+  "keywords": ["openclaw", "plugin", "memory", "continuity", "state", "recovery", "markdown"],
   "author": "dtzp555-max",
   "license": "MIT",
   "openclaw": {

references/context-engine-evaluation.md

@@ -0,0 +1,158 @@
+# ContextEngine Variant Evaluation
+
+## Status
+Decision document. Phase 5 evaluation as outlined in plugin-design.md.
+
+## Executive Summary
+
+**Decision: Do not build a ContextEngine variant.**
+
+Memory Continuity already achieves its core recovery goals through lifecycle hooks and `before_prompt_build`. The contextEngine slot is exclusive, and occupying it would break coexistence with lossless-claw and future context engines -- destroying MC's strongest ecosystem advantage. The marginal gains from `assemble()` and `systemPromptAddition` do not justify the slot cost, especially since `prependSystemContext` via `before_prompt_build` already provides prompt-time injection.
+
+---
+
+## What contextEngine provides vs current hooks approach
+
+### ContextEngine slot capabilities (theoretical)
+| Capability | Description |
+|---|---|
+| `assemble()` | Full control over context assembly -- decides what goes into the prompt, in what order, with what priority |
+| `systemPromptAddition` | Guaranteed system prompt injection with engine-level priority |
+| Context window management | Direct control over token budgets, message pruning, and compression strategy |
+| Turn-level interception | Can modify or rewrite every message before it reaches the model |
+
+### What MC currently uses (hooks-only)
+| Capability | Implementation |
+|---|---|
+| `before_prompt_build` | Injects continuity snapshot via `prependSystemContext` -- works today, confirmed in phase 2 validation |
+| `command:new` | Archives checkpoint before `/new` reset |
+| `agent_end` | Safety checkpoint at session end |
+| `before_compaction` | Protection checkpoint before compaction |
+| `subagent_ended` | Child-to-parent result recovery |
+| Session logging, summaries, relevance injection | All implemented via hooks without needing the engine slot |
+
+### Gap analysis: what would a ContextEngine variant actually gain?
+
+1. **`assemble()` -- full context control**: MC does not need this. MC's job is to inject a 150-300 token snapshot at startup and protect state at boundaries. It does not need to control the entire context assembly pipeline. That is a context compression concern (lossless-claw's domain).
+
+2. **`systemPromptAddition`**: MC already achieves equivalent functionality via `prependSystemContext` in the `before_prompt_build` hook. Phase 2 validation confirmed this works. The injection is not ContextEngine-exclusive.
+
+3. **Token budget management**: MC's snapshot is deliberately small (~150-300 tokens). It does not need fine-grained token budget control. Oversized state files are handled by the `maxStateLines` config and `mc compact` command.
+
+4. **Turn-level interception**: MC does not need to modify arbitrary turns. Its concern is boundary events (startup, /new, compaction, session end), all of which are already covered by lifecycle hooks.
+
+**Conclusion**: The practical capabilities MC needs are already available through the hooks API. The additional capabilities from the contextEngine slot solve problems MC does not have.
+
+---
+
+## Slot conflict analysis
+
+### The core constraint
+OpenClaw's `contextEngine` is an **exclusive slot** -- only one plugin can occupy it at a time.
+
+### Impact on lossless-claw coexistence
+MC's `openclaw.plugin.json` explicitly declares:
+- `"slot": "hooks-only"`
+- `"slotNote": "Does NOT occupy the contextEngine slot. Safe to run alongside any context engine."`
+- `"complements": [{ "id": "lossless-claw", ... }]`
+
+If MC became a contextEngine:
+- Users would be forced to choose between MC and lossless-claw
+- Context compression is a broader, more fundamental need than working-state recovery
+- Most users who want MC also want context compression -- making them mutually exclusive would reduce adoption of both
+
+### Composite/multi-engine support
+Research found **no evidence** of composite engine, engine chaining, or multi-engine support in OpenClaw:
+- No `contextEngine` array support in plugin schema
+- No engine composition layer in runtime code
+- No roadmap references to multi-engine support in available documentation
+- The design documents themselves note this as a precondition: "only pursue if... composite-engine support exists"
+
+**That precondition has not been met.**
+
+### Ecosystem risk
+MC's hooks-only design is a competitive advantage:
+- It is the only memory plugin that explicitly complements rather than competes with context engines
+- Converting to a contextEngine would make MC just another exclusive-slot plugin competing for the same position
+- The interop declaration in `openclaw.plugin.json` is a trust signal to users that MC respects their plugin choices
+
+---
+
+## Risk/Benefit Matrix
+
+### Building a ContextEngine variant
+
+| Factor | Assessment |
+|---|---|
+| **Benefit: Better prompt injection** | Low -- `prependSystemContext` already works |
+| **Benefit: Full context control** | Irrelevant -- MC does not need context assembly control |
+| **Benefit: Token budget awareness** | Minimal -- MC's snapshots are already small by design |
+| **Risk: Breaks lossless-claw coexistence** | **Critical** -- destroys MC's key ecosystem advantage |
+| **Risk: Reduced adoption** | **High** -- users forced into either/or choice |
+| **Risk: Maintenance burden** | Medium -- two codepaths (hooks version + engine version) to maintain |
+| **Risk: Feature creep** | High -- engine slot invites scope expansion into context compression territory |
+| **Risk: No composite engine fallback** | **Critical** -- if composite support never ships, the variant is permanently exclusive |
+
+### Keeping hooks-only
+
+| Factor | Assessment |
+|---|---|
+| **Benefit: Coexists with all context engines** | **Critical** -- unique market position |
+| **Benefit: Simpler architecture** | High -- one codepath, clear scope boundaries |
+| **Benefit: Lower maintenance** | High -- no engine API surface to track |
+| **Benefit: Aligned with design principles** | High -- scope.md principle #8: "Ecosystem compatibility matters" |
+| **Risk: Missing prompt-time power** | Low -- `before_prompt_build` covers the actual need |
+| **Risk: Weaker injection guarantee** | Low -- not observed as a real problem in practice |
+
+---
+
+## Recommendation
+
+**Do not build a ContextEngine variant. Invest in hook-based improvements instead.**
+
+### Rationale
+1. The two preconditions from plugin-design.md Phase 5 are both unmet:
+   - "slot tradeoffs are acceptable" -- they are not; lossless-claw coexistence is too valuable
+   - "composite-engine support exists" -- it does not
+2. MC's actual prompt injection needs are satisfied by `before_prompt_build` + `prependSystemContext`
+3. The contextEngine API solves context assembly and compression problems that are outside MC's scope
+4. Converting would destroy MC's strongest differentiator: being the only memory plugin that complements rather than competes with context engines
+
+### What to do instead: hook improvements
+
+#### Priority 1 -- Strengthen existing injection
+- Validate `prependSystemContext` reliability across OpenClaw versions and model backends
+- Add fallback to `before_agent_start` if `before_prompt_build` proves unreliable in edge cases
+- Improve snapshot quality (better summarization, freshness labeling)
+
+#### Priority 2 -- Better compaction protection
+- Confirm `before_compaction` is truly synchronous (the probe exists but needs production validation)
+- Add tail-message protection quality metrics
+- Consider `after_compaction` hook for post-compaction state verification
+
+#### Priority 3 -- Smarter relevance injection
+- The `relevanceInjection` feature already injects historical context at startup
+- Improve relevance scoring without needing engine-level token budget control
+- Keep injection budget self-contained (MC manages its own token ceiling)
+
+#### Priority 4 -- Monitor OpenClaw evolution
+- Watch for composite-engine or engine-delegation support in future OpenClaw releases
+- If OpenClaw adds a way for hooks to register "guaranteed system prompt sections" at engine priority without taking the slot, adopt that immediately
+- Re-evaluate this decision if the exclusive-slot constraint changes
+
+---
+
+## Conditions for revisiting this decision
+
+Re-evaluate if ANY of these become true:
+1. OpenClaw adds composite/multi-engine support (multiple contextEngines can coexist)
+2. OpenClaw adds a "system prompt section" API at engine priority, available to non-engine plugins
+3. `before_prompt_build` + `prependSystemContext` proves unreliable in a way that cannot be fixed via hooks
+4. A significant user cohort explicitly requests engine-level context control from MC and does not use lossless-claw
+
+Until then, the hooks-only architecture remains correct.
+
+---
+
+## Document history
+- 2026-03-31: Initial evaluation. Decision: do not build.