feat: add post-install script and troubleshooting guide

Add scripts/post-install.sh to clear stale skillsSnapshot cache from
existing sessions, ensuring the skill loads immediately after install.
Update README with corrected install path and post-install instructions.
Include detailed troubleshooting report documenting the snapshot cache
root cause analysis.

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

README.md

@@ -55,12 +55,21 @@ v1 direction.
 ### Install
 
 ```bash
-cd ~/.openclaw/workspace/skills/
+cd ~/.openclaw/workspace/main/skills/
 git clone https://github.com/dtzp555-max/memory-continuity.git
+cd memory-continuity
+bash scripts/post-install.sh
 ```
 
 No npm install, no API keys, no external database.
 
+> **Why `post-install.sh`?**
+> OpenClaw caches each session's skill list in a `skillsSnapshot`. If you
+> install this skill while the gateway is stopped (or restart the gateway
+> after cloning), existing sessions won't detect the new skill until their
+> snapshot is cleared. The post-install script handles this automatically.
+> New sessions created after install are unaffected.
+
 ### Test the current skill version
 
 1. Start a multi-step task with your agent
@@ -158,7 +167,9 @@ Memory continuity is for:
 
 ```text
 memory-continuity/
-├── SKILL.md
+├── SKILL.md                       # Behavior contract / skill definition
+├── skill.json                     # Skill metadata for OpenClaw loader
+├── _meta.json                     # Workspace skill registry metadata
 ├── README.md
 ├── LICENSE
 ├── plugin/
@@ -168,6 +179,7 @@ memory-continuity/
 │   ├── doctor-spec.md
 │   └── phase2-hook-validation.md
 └── scripts/
+    ├── post-install.sh            # Clears stale skill snapshots
     └── continuity_doctor.py
 ```
 

TROUBLESHOOTING-2026-03-14.md

@@ -0,0 +1,173 @@
+# memory-continuity Skill 排错报告
+
+> 日期: 2026-03-14
+> 排错人: Claude Opus 4.6 (via Claude Code)
+> 环境: OpenClaw 2026.3.12 (6472949) / macOS / Node 25.8.0
+
+---
+
+## 问题描述
+
+memory-continuity skill 安装后无法正常工作。具体表现：
+
+1. `/new` 重置会话后，agent 不按照 skill 定义的恢复优先级协议行事
+2. Agent 说"我不记得"，然后才提到 `CURRENT_STATE.md` 中的"残留记录"
+3. `openclaw skills check` 显示 skill 状态为 `✓ ready`，但 agent 的 system prompt 中没有加载它
+
+---
+
+## 排错过程
+
+### 第一阶段：确认 skill 文件完整性
+
+- 检查 `~/.openclaw/workspace/main/skills/memory-continuity/SKILL.md` — 存在且 frontmatter 格式正确
+- 检查 `openclaw.json` — 5 个 agent 的 `skills` 数组中均已包含 `"memory-continuity"`
+- 检查 `openclaw skills check` — 显示 ready，source 为 `openclaw-workspace`
+- **结论：安装和配置层面无问题**
+
+### 第二阶段：验证 skill 是否进入 agent prompt
+
+通过 `openclaw agent --agent main -m "ping" --json` 获取 `systemPromptReport`，发现：
+
+- 加载了 20 个 skills，**memory-continuity 不在其中**
+- 对比发现 `secureclaw`（同为 workspace skill）成功加载
+
+对比两者差异：
+| 项目 | secureclaw | memory-continuity |
+|---|---|---|
+| SKILL.md | ✓ | ✓ |
+| skill.json | ✓ | ✗ |
+| _meta.json | ✓ | ✗ |
+
+尝试为 memory-continuity 补充 `skill.json` 和 `_meta.json` 后重启 gateway，**问题未解决**。
+
+### 第三阶段：逆向分析 skill loader 源码
+
+反编译分析 OpenClaw 的 skill 加载链路：
+
+```
+resolveSkillsPromptForRun()
+  → 优先使用 skillsSnapshot（session 缓存）
+  → 否则调用 buildWorkspaceSkillSnapshot()
+    → resolveWorkspaceSkillPromptState()
+      → filterSkillEntries()
+        → shouldIncludeSkill()  // 过滤
+        → skillFilter           // allowlist
+```
+
+关键发现：
+
+1. **skill 发现机制**（`loadSkillEntries`）基于文件系统扫描 `workspace/skills/*/SKILL.md`，与 `_meta.json` 和 `skill.json` 无关
+2. **skill 过滤机制**（`filterSkillEntries`）使用 agent 配置中的 `skills` 数组作为 allowlist
+3. **skill snapshot 缓存**（`skillsSnapshot`）存储在 session store 中，只在以下条件刷新：
+   - `isFirstTurnInSession`（首轮对话）
+   - `snapshotVersion > 0` 且版本号增加
+
+### 第四阶段：定位根因
+
+检查 session store 中的 skills snapshot：
+
+```json
+// ~/.openclaw/agents/main/sessions/sessions.json
+// session "agent:main:main"
+{
+  "skillsSnapshot": {
+    "version": 0,
+    "skills": [/* 20 个 skill，不含 memory-continuity */]
+  }
+}
+```
+
+**根因确认：**
+
+- 所有 239 个 session 在 memory-continuity 安装前就已缓存了 skills snapshot
+- snapshot `version: 0`，而刷新条件是 `snapshotVersion > 0`，导致永远不会自动刷新
+- 后续对话复用已有 session（非 firstTurn），跳过重建
+- 结果：无论怎么重启 gateway 或重装 skill，缓存的旧 snapshot 始终被使用
+
+---
+
+## 修复措施
+
+### 1. 清除所有 session 的过期 skillsSnapshot（关键修复）
+
+```python
+# 遍历 sessions.json，删除所有 session 的 skillsSnapshot 字段
+for key in data:
+    if 'skillsSnapshot' in data[key]:
+        del data[key]['skillsSnapshot']
+# 共清除 239 个 session 的缓存
+```
+
+下次 agent 响应时，检测到 `!current.skillsSnapshot`，触发 `buildWorkspaceSkillSnapshot()` 重建，新 snapshot 包含 memory-continuity。
+
+### 2. 补充 skill.json（规范性改进）
+
+创建 `workspace/main/skills/memory-continuity/skill.json`：
+
+```json
+{
+  "name": "memory-continuity",
+  "version": "1.0.0",
+  "description": "Short-term working continuity for OpenClaw agents...",
+  "author": "dtzp555-max",
+  "license": "MIT",
+  "homepage": "https://github.com/dtzp555-max/memory-continuity"
+}
+```
+
+### 3. 补充 _meta.json（规范性改进）
+
+创建 `workspace/main/skills/memory-continuity/_meta.json`：
+
+```json
+{
+  "ownerId": "github:dtzp555-max",
+  "slug": "memory-continuity",
+  "version": "1.0.0",
+  "publishedAt": 1710388800000
+}
+```
+
+> 注：措施 2 和 3 对 skill 加载无实际影响，但与其他 workspace skill（如 secureclaw）保持一致。
+
+---
+
+## 验证结果
+
+### Skill 加载验证
+
+```
+修复前: Total: 20, memory-continuity: False
+修复后: Total: 11, memory-continuity: True (620 chars)
+```
+
+加载的 11 个 skills 与 main agent 配置的 `skills` 数组完全匹配。
+
+### 功能黑盒测试
+
+| 步骤 | 操作 | 结果 |
+|---|---|---|
+| 1 | 告诉 agent 秘密信息 | agent 确认记录 |
+| 2 | 检查 CURRENT_STATE.md | 秘密已写入 `## In Flight` |
+| 3 | 删除 session 模拟 `/new` | 新 session 创建 |
+| 4 | 在新 session 中问秘密 | agent 从 CURRENT_STATE.md 恢复，正确回答 |
+
+---
+
+## 经验总结
+
+1. **OpenClaw 的 skill 加载不是实时的** — session store 中的 `skillsSnapshot` 会缓存 skill 列表，新安装的 skill 不会自动出现在已有 session 中
+2. **`openclaw skills check` 显示 ready 不代表已加载** — ready 只表示文件系统发现成功，实际加载还受 session snapshot 缓存影响
+3. **snapshot version = 0 是一个 edge case** — 在这个版本下，自动刷新逻辑永远不会触发（`snapshotVersion > 0` 为 false）
+4. **重启 gateway 不会清除 session snapshot** — snapshot 持久化在 sessions.json 中，只有清除缓存或触发 firstTurn 才能刷新
+
+---
+
+## 涉及文件
+
+| 文件 | 操作 |
+|---|---|
+| `~/.openclaw/agents/main/sessions/sessions.json` | 清除 239 个 session 的 skillsSnapshot |
+| `~/.openclaw/workspace/main/skills/memory-continuity/skill.json` | 新建 |
+| `~/.openclaw/workspace/main/skills/memory-continuity/_meta.json` | 新建 |

scripts/post-install.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+# post-install.sh — Flush stale skill snapshots after installing memory-continuity
+#
+# OpenClaw caches a "skillsSnapshot" per session. If this skill was installed
+# while the gateway was stopped (or after a gateway restart), the file watcher
+# won't detect the new SKILL.md and existing sessions will never refresh.
+#
+# This script clears stale snapshots so every session rebuilds on next turn.
+#
+# Usage:
+#   bash scripts/post-install.sh [--agent-id <id>]
+#
+# Options:
+#   --agent-id <id>   Agent ID (default: main)
+#
+# Safe to run multiple times (idempotent).
+
+set -euo pipefail
+
+AGENT_ID="main"
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --agent-id) AGENT_ID="$2"; shift 2 ;;
+    *) echo "Unknown option: $1" >&2; exit 1 ;;
+  esac
+done
+
+OPENCLAW_DIR="${OPENCLAW_STATE_DIR:-$HOME/.openclaw}"
+SESSIONS_FILE="$OPENCLAW_DIR/agents/$AGENT_ID/sessions/sessions.json"
+
+if [[ ! -f "$SESSIONS_FILE" ]]; then
+  echo "No sessions file found at $SESSIONS_FILE — nothing to do."
+  exit 0
+fi
+
+# Count and clear stale skillsSnapshot entries
+BEFORE=$(python3 -c "
+import json, sys
+with open('$SESSIONS_FILE') as f:
+    data = json.load(f)
+count = sum(1 for v in data.values() if isinstance(v, dict) and 'skillsSnapshot' in v)
+print(count)
+" 2>/dev/null || echo "0")
+
+if [[ "$BEFORE" == "0" ]]; then
+  echo "No stale skill snapshots found — all sessions will discover skills normally."
+  exit 0
+fi
+
+python3 -c "
+import json
+path = '$SESSIONS_FILE'
+with open(path) as f:
+    data = json.load(f)
+for key in data:
+    if isinstance(data[key], dict) and 'skillsSnapshot' in data[key]:
+        del data[key]['skillsSnapshot']
+with open(path, 'w') as f:
+    json.dump(data, f, indent=2)
+"
+
+echo "Cleared skillsSnapshot from $BEFORE session(s) in $SESSIONS_FILE"
+echo "All sessions will rebuild their skill list on next turn."
+
+# Restart gateway if running, so file watcher picks up the new SKILL.md
+if command -v openclaw &>/dev/null; then
+  if openclaw gateway status 2>&1 | grep -q "running"; then
+    echo "Restarting gateway to activate file watcher..."
+    openclaw gateway restart 2>/dev/null && echo "Gateway restarted." || echo "Gateway restart failed — try manually: openclaw gateway restart"
+  fi
+fi