fix: address review — restore +x, guard double comment, update stale docs (#352)

- Restore executable bit on gardener/gardener-poll.sh (cron invokes it directly)
- Add _BLOCKED_POSTED guard to prevent duplicate diagnostic comments when
  both _on_phase_change(PHASE:crashed) and the belt-and-suspenders exit
  handler both call post_blocked_diagnostic()
- Update stale documentation:
  - gardener-run.sh: remove "CI escalation recipes" from issue body
  - AGENTS.md: update directory layout comment for gardener-poll.sh
  - gardener-poll.sh: remove recipe engine description from header

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

AGENTS.md

@@ -17,7 +17,7 @@ disinto/
 ├── dev/           dev-poll.sh, dev-agent.sh, phase-handler.sh — issue implementation
 ├── review/        review-poll.sh, review-pr.sh — PR review
 ├── gardener/      gardener-run.sh — files action issue for run-gardener formula
-│                  gardener-poll.sh, gardener-agent.sh — recipe engine + grooming
+│                  gardener-poll.sh, gardener-agent.sh — grooming
 ├── predictor/     predictor-run.sh — daily cron executor for run-predictor formula
 ├── planner/       planner-run.sh — direct cron executor for run-planner formula
 │                  planner/journal/ — daily raw logs from each planner run

dev/dev-agent.sh

@@ -772,7 +772,10 @@ case "${_MONITOR_LOOP_EXIT:-}" in
   crashed)
     # Belt-and-suspenders: _on_phase_change(PHASE:crashed) handles primary
     # cleanup (diagnostic comment, blocked label, worktree, files).
-    post_blocked_diagnostic "crashed"
+    # Only post if the callback didn't already (guard prevents double comment).
+    if [ "${_BLOCKED_POSTED:-}" != "true" ]; then
+      post_blocked_diagnostic "crashed"
+    fi
     ;;
   done)
     # Belt-and-suspenders: callback in phase-handler.sh handles primary cleanup,

dev/phase-handler.sh

@@ -93,6 +93,7 @@ ${tmux_output}
       -d "{\"labels\":[${blocked_id}]}" >/dev/null 2>&1 || true
   fi
   CLAIMED=false
+  _BLOCKED_POSTED=true
 }
 
 # --- Build phase protocol prompt (shared across agents) ---

gardener/gardener-poll.sh

@@ -4,7 +4,6 @@
 #
 # Cron: daily (or 2x/day). Handles lock management, escalation reply
 # injection, and delegates backlog grooming to gardener-agent.sh.
-# Then processes dev-agent CI escalations via the recipe engine.
 #
 # Grooming (delegated to gardener-agent.sh):
 #   - Duplicate titles / overlapping scope
@@ -12,13 +11,6 @@
 #   - Stale issues (no activity > 14 days)
 #   - Blockers starving the factory
 #   - Tech-debt promotion / dust bundling
-#
-# CI escalation (recipe-driven, handled here):
-#   - ShellCheck per-file sub-issues
-#   - Generic CI failure issues
-#   - Chicken-egg CI handling
-#   - Cascade rebase + retry merge
-#   - Flaky test quarantine
 # =============================================================================
 set -euo pipefail
 

gardener/gardener-run.sh

@@ -51,7 +51,7 @@ model: opus
 ---
 
 Periodic gardener housekeeping run. The action-agent reads \`formulas/run-gardener.toml\`
-and executes the steps: preflight, grooming, blocked-review, CI escalation recipes,
+and executes the steps: preflight, grooming, blocked-review,
 AGENTS.md update, and commit-and-pr.
 
 Filed automatically by \`gardener-run.sh\`."