chore: gardener housekeeping 2026-03-25

lib/AGENTS.md

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 # Shared Helpers (`lib/`)
 
 All agents source `lib/env.sh` as their first action. Additional helpers are
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 | `lib/parse-deps.sh` | Extracts dependency issue numbers from an issue body (stdin → stdout, one number per line). Matches `## Dependencies` / `## Depends on` / `## Blocked by` sections and inline `depends on #N` / `blocked by #N` patterns. Inline scan skips fenced code blocks to prevent false positives from code examples in issue bodies. Not sourced — executed via `bash lib/parse-deps.sh`. | dev-poll, supervisor-poll |
 | `lib/matrix_listener.sh` | Long-poll Matrix sync daemon. Dispatches thread replies to the correct agent via tmux session injection (dev, action, vault, review) or well-known files (`/tmp/{agent}-escalation-reply` for supervisor/gardener). Handles all agent reply routing. Run as systemd service. | Standalone daemon |
 | `lib/formula-session.sh` | `acquire_cron_lock()`, `check_memory()`, `load_formula()`, `build_context_block()`, `consume_escalation_reply()`, `start_formula_session()`, `formula_phase_callback()`, `build_prompt_footer()`, `run_formula_and_monitor(AGENT [TIMEOUT] [CALLBACK])` — shared helpers for formula-driven cron agents (lock, memory guard, formula loading, prompt assembly, tmux session, monitor loop, crash recovery). `formula_phase_callback()` handles `PHASE:escalate` (unified escalation path — kills the session; callers may follow up via Matrix). `run_formula_and_monitor` accepts an optional CALLBACK (default: `formula_phase_callback`) so callers can install custom merge-through or escalation handlers. | planner-run.sh, predictor-run.sh, gardener-run.sh, supervisor-run.sh, dev-agent.sh, action-agent.sh |
+| `lib/guard.sh` | `check_active(agent_name)` — reads `$FACTORY_ROOT/state/.{agent_name}-active`; exits 0 (skip) if the file is absent. Factory is off by default — state files must be created to enable each agent. Sourced by dev-poll.sh, review-poll.sh, action-poll.sh, predictor-run.sh, supervisor-run.sh. | cron entry points |
+| `lib/mirrors.sh` | `mirror_push()` — pushes `$PRIMARY_BRANCH` + tags to all configured mirror remotes (fire-and-forget background pushes). Reads `MIRROR_NAMES` and `MIRROR_*` vars exported by `load-project.sh` from the `[mirrors]` TOML section. Failures are logged but never block the pipeline. Sourced by dev-poll.sh and dev/phase-handler.sh — called after every successful merge. | dev-poll.sh, phase-handler.sh |
+| `lib/build-graph.py` | Python tool: parses VISION.md, prerequisite-tree.md, AGENTS.md, formulas/*.toml, evidence/, and forge issues/labels into a NetworkX DiGraph. Runs structural analyses (orphaned objectives, stale prerequisites, thin evidence, circular deps) and outputs a JSON report. Used by `review-pr.sh` (per-PR changed-file analysis) and `predictor-run.sh` (full-project analysis) to provide structural context to Claude. | review-pr.sh, predictor-run.sh |
 | `lib/secret-scan.sh` | `scan_for_secrets()` — detects potential secrets (API keys, bearer tokens, private keys, URLs with embedded credentials) in text; returns 1 if secrets found. `redact_secrets()` — replaces detected secret patterns with `[REDACTED]`. | file-action-issue.sh, phase-handler.sh |
 | `lib/file-action-issue.sh` | `file_action_issue()` — dedup check, secret scan, label lookup, and issue creation for formula-driven cron wrappers. Sets `FILED_ISSUE_NUM` on success. Returns 4 if secrets detected in body. | (available for future use) |
 | `lib/agent-session.sh` | Shared tmux + Claude session helpers: `create_agent_session()`, `inject_formula()`, `agent_wait_for_claude_ready()`, `agent_inject_into_session()`, `agent_kill_session()`, `monitor_phase_loop()`, `read_phase()`, `write_compact_context()`. `create_agent_session(session, workdir, [phase_file])` optionally installs a PostToolUse hook (matcher `Bash\|Write`) that detects phase file writes in real-time — when Claude writes to the phase file, the hook writes a marker so `monitor_phase_loop` reacts on the next poll instead of waiting for mtime changes. Also installs a StopFailure hook (matcher `rate_limit\|server_error\|authentication_failed\|billing_error`) that writes `PHASE:failed` with an `api_error` reason to the phase file and touches the phase-changed marker, so the orchestrator discovers API errors within one poll cycle instead of waiting for idle timeout. Also installs a SessionStart hook (matcher `compact`) that re-injects phase protocol instructions after context compaction — callers write the context file via `write_compact_context(phase_file, content)`, and the hook (`on-compact-reinject.sh`) outputs the file content to stdout so Claude retains critical instructions. When `MATRIX_THREAD_ID` is exported, also installs a Stop hook (`on-stop-matrix.sh`) that streams each Claude response to the Matrix thread. When `phase_file` is set, passes it to the idle stop hook (`on-idle-stop.sh`) so the hook can **nudge Claude** (up to 2 times) if Claude returns to the prompt without writing to the phase file — the hook injects a tmux reminder asking Claude to signal PHASE:done or PHASE:awaiting_ci. The PreToolUse guard hook (`on-pretooluse-guard.sh`) receives the session name as a third argument — formula agents (`gardener-*`, `planner-*`, `predictor-*`, `supervisor-*`) are identified this way and allowed to access `FACTORY_ROOT` from worktrees (they need env.sh, AGENTS.md, formulas/, lib/). `monitor_phase_loop` sets `_MONITOR_LOOP_EXIT` to one of: `done`, `idle_timeout`, `idle_prompt` (Claude returned to `>` for 3 consecutive polls without writing any phase — callback invoked with `PHASE:failed`, session already dead), `crashed`, or `PHASE:escalate` / other `PHASE:*` string. **Unified escalation**: `PHASE:escalate` is the signal that a session needs human input (renamed from `PHASE:needs_human`). **Callers must handle `idle_prompt`** in both their callback and their post-loop exit handler — see [`docs/PHASE-PROTOCOL.md` idle_prompt](docs/PHASE-PROTOCOL.md#idle_prompt-exit-reason) for the full contract. | dev-agent.sh, action-agent.sh |