fix(docs): address review feedback on architecture clarity and path consistency

- Clarify SPAWN exits vs HANDOFF continues in architecture diagram (S1)
- Add 'read' to toolsAllow in architecture snippet to match cron config (G2)
- Rephrase safety invariant 6 to clarify workers may push/manage labels (G3)
- Add reserved Rule 1 placeholder to explain numbering gap (S2)
- Clarify Rule 10 skip behavior for already-assigned PRs (S3)
- Standardize invariants checker path to full workspace path (G4/G5)
- Add note explaining SKILL.md deployment to workspace path (G1)

SKILL.md

@@ -8,15 +8,15 @@ It lives in the repo so changes are version-controlled alongside the code.
 Dispatch is a **pure shell script** — no model reasoning.
 
 ```
-Cron (agentTurn, toolsAllow: [exec, sessions_spawn])
+Cron (agentTurn, toolsAllow: [exec, sessions_spawn, read])
   → runs dispatch script
   → reads output for SPAWN or HANDOFF lines
   → spawns worker if instructed
 
 Dispatch script  (~/.openclaw/workspace/scripts/dev-loop-dispatch.sh)
   → pure bash, all decisions are curl API calls + branches
-  → exits after one SPAWN action per pass
-  → may emit multiple HANDOFFs in one pass
+  → exits after emitting one SPAWN line (at most one worker per run)
+  → emits HANDOFF for each qualifying PR (does not exit after HANDOFF)
 
 Workers (Opus, spawned by cron model)
   → receive precise task description
@@ -34,7 +34,7 @@ The model **never** assesses project state or makes dispatch decisions.
 3. **WIP mutex** — one active worker per repo; WIP label gates new issue pickup
 4. **One SPAWN per run** — script emits at most one SPAWN line per execution
 5. **set -euo pipefail** — any curl failure aborts immediately, no partial actions
-6. **Workers reply NO_REPLY** — no announcements, no handoffs, no side effects
+6. **Workers reply NO_REPLY** — no dispatch-level side effects (workers may push changes and manage labels as part of their task)
 
 ## Dispatch Rules (in order)
 
@@ -42,6 +42,7 @@ The model **never** assesses project state or makes dispatch decisions.
 |------|-----------|--------|
 | 0 | WIP label > 1hr old | Remove stale WIP, continue |
 | 0b | WIP label ≤ 1hr old | Mark ACTIVE_WIP=1, continue (only gates Rule 10) |
+| _(1)_ | _(reserved — intentionally unused)_ | — |
 | 2 | Any reviewer has REQUEST_CHANGES | SPAWN:findings |
 | 3 | PR not mergeable | SPAWN:rebase |
 | 4 | CI failure, no fix plan | SPAWN:ci-fix |
@@ -99,6 +100,7 @@ Key fields:
     If no SPAWN line in output, reply NO_REPLY.
 
     See ~/.openclaw/workspace/skills/dev-loop/SKILL.md for full instructions.
+    (This repo's SKILL.md is deployed to that workspace path.)
   model: hai-anthropic/anthropic--claude-4.5-haiku
   toolsAllow: [exec, sessions_spawn, read]
 ```