Add continuity-guard skill skeleton and doctor script

skills/continuity-guard/SKILL.md

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+---
+name: continuity-guard
+description: Maintain short-term continuity and anti-silence discipline for OpenClaw agents using memory/CURRENT_STATE.md plus dual reporting rules. Use when creating/updating agent workspaces, after OpenClaw upgrades/restarts, when continuity seems broken, when a session may have lost context, or when you need to doctor/repair CURRENT_STATE coverage and reporting protocol drift across agents.
+---
+
+# Continuity Guard
+
+Use `memory/CURRENT_STATE.md` as a small overwrite-oriented workbench, not as a journal.
+
+## Core rules
+
+- Ensure every agent workspace has `memory/CURRENT_STATE.md`
+- Keep `CURRENT_STATE.md` small
+  - main: target 25-40 lines, hard cap 50
+  - other agents: target 15-25 lines, hard cap 30
+- Required sections:
+  - `In Flight`
+  - `Blocked / Waiting`
+  - `Recently Finished`
+  - `Next`
+  - `Reset Summary`
+- Update only on state changes, not on a timer
+- Remove stale items instead of endlessly appending
+
+## Dual reporting protocol
+
+### Worker → main
+Execution agents must report to main at:
+- accepted
+- blocked
+- milestone
+- done
+- model/environment abnormal
+
+Preferred reply format:
+- `status`
+- `summary`
+- `evidence`
+- `risk`
+- `next`
+
+### main → Tao
+Main must report to Tao at:
+- task accepted / formally started
+- worker dispatched
+- blocked
+- milestone reached
+- task/phase completed
+
+Preferred Tao update format:
+- who
+- status
+- output
+- next
+
+Ordering rule:
+- When a worker reports milestone/completion/blocker, first update `CURRENT_STATE.md`, then update Tao, then continue with review/commit/next dispatch.
+- If no evidence point exists yet (sessionKey / commit / branch / PR / log), do not claim work has already started.
+
+## When to use the doctor
+Run `scripts/continuity_doctor.py` when:
+- OpenClaw was upgraded
+- gateway restarted and continuity feels suspicious
+- an agent seems to have lost short-term context
+- you need to confirm `CURRENT_STATE.md` coverage across workspaces
+
+## How to use the doctor
+From the main workspace:
+
+```bash
+python3 skills/continuity-guard/scripts/continuity_doctor.py \
+  --main-workspace /Users/taodeng/.openclaw/workspace/main \
+  --agents-root /Users/taodeng/.openclaw/workspaces
+```
+
+The doctor checks:
+- main `memory/CURRENT_STATE.md` exists
+- all agent workspaces have `memory/CURRENT_STATE.md`
+- required sections exist
+- line-count caps are respected
+- `AGENTS.md` still contains continuity + dual reporting rules
+
+## Repair strategy
+If drift is found:
+1. Restore/create missing `memory/CURRENT_STATE.md`
+2. Restore continuity guidance in `AGENTS.md`
+3. Re-run doctor
+4. Only then investigate deeper behavioral failures
+
+## References
+- For template and limits: read `references/template.md`
+- For doctor semantics and PASS/WARN/FAIL meanings: read `references/doctor-spec.md`