Flow Next Ralph Init

---
name: flow-next-ralph-init
description: Scaffold repo-local Ralph autonomous harness under scripts/ralph/. Use when user runs /flow-next:ralph-init.
user-invocable: false
---

# Ralph init

Scaffold or update repo-local Ralph harness. Opt-in only.

## Preamble

The plugin root resolves once via the cross-platform env-var fallback (Droid uses `DROID_PLUGIN_ROOT`; Claude Code documents `CLAUDE_PLUGIN_ROOT` as its compat alias). Subsequent blocks use `$PLUGIN_ROOT`:

```bash
PLUGIN_ROOT="${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT}}"
```

## Rules

- **Every write lands under `scripts/ralph/` in the current repo.** A file written anywhere else has broken this.
- If `scripts/ralph/` already exists, offer to update (preserves config.env).
- Copy templates from `templates/` into `scripts/ralph/` (includes `ralphctl.py` for pause/resume/stop/status).
- Copy `flowctl`, `flowctl.cmd`, `flowctl.py`, `flowctl_bootstrap.py`, `flowctl-help.txt`, and the `flowctl_tracker/` package (from `$PLUGIN_ROOT/scripts/`) and `pick-python.sh` (from `$PLUGIN_ROOT/scripts/lib/`) into `scripts/ralph/` — **flat, so the resolver lands at `scripts/ralph/pick-python.sh`** where `ralph.sh` and the hook wrapper source it. A `pick-python.sh` that landed under `scripts/ralph/lib/` has broken this.
- Set executable bit on `scripts/ralph/ralph.sh`, `scripts/ralph/ralph_once.sh`, `scripts/ralph/flowctl`, and `scripts/ralph/ralphctl.py`.
- **Hook registration is agent-driven skill prose only.** The plugin ships no hooks by default; you (the host agent) merge the guard entries into the project's host settings via Read+Edit, idempotently, without clobbering unrelated hooks. **The boundary is hard: there is no flowctl subcommand for hook install/remove/status and no hook machinery in Python.** A settings file whose hooks object now holds only flow-next entries, or a hook-install subcommand added to the CLI, has broken this.

## Workflow

1. Resolve repo root: `git rev-parse --show-toplevel`

2. Check if `scripts/ralph/` exists:
   - If exists: ask "Update existing Ralph setup? (preserves config.env and runs/) [y/n]"
     - If no: stop
     - If yes: set UPDATE_MODE=1
   - If not exists: set UPDATE_MODE=0

3. Detect available review backends (skip if UPDATE_MODE=1):
   ```bash
   if command -v rpce-cli >/dev/null 2>&1 \
     || [ -x "$HOME/RepoPrompt/repoprompt_ce_cli" ] \
     || [ -x "$HOME/Library/Application Support/RepoPrompt CE/repoprompt_ce_cli" ] \
     || command -v rp-cli >/dev/null 2>&1; then HAVE_RP=1; else HAVE_RP=0; fi
   HAVE_CODEX=$(which codex >/dev/null 2>&1 && echo 1 || echo 0)
   HAVE_COPILOT=$(which copilot >/dev/null 2>&1 && echo 1 || echo 0)
   HAVE_CURSOR=$(which cursor-agent >/dev/null 2>&1 && echo 1 || echo 0)
   ```

4. Determine review backend (skip if UPDATE_MODE=1):
   - If several are available, ask the user (do NOT use AskUserQuestion tool).
     Show only the options whose CLIs were detected:
     ```
     Multiple review backends available. Which one?
     a) RepoPrompt (macOS, visual builder)
     b) Codex CLI (cross-platform, reviewer models via a Codex subscription)
     c) GitHub Copilot CLI (cross-platform, Claude/GPT via Copilot)
     d) Cursor CLI (cross-platform, runs cursor-agent; reviewer models via a Cursor subscription)

     (Reply: "a", "rp", "b", "codex", "c", "copilot", "d", "cursor", or just tell me)
     ```
     Wait for response. Default if empty/ambiguous: prefer `rp` > `codex` > `copilot` > `cursor`.
   - If only the RepoPrompt CLI ladder resolves: use `rp`
   - If only codex available: use `codex`
   - If only copilot available: use `copilot`
   - If only cursor-agent available: use `cursor`
   - If none available: use `none`

5. Copy files using bash — **the copies run through `cp`, never the Write tool.** A template reproduced by writing its contents has broken this:

   **If UPDATE_MODE=1 (updating):**
   ```bash
   # Backup config.env
   cp scripts/ralph/config.env /tmp/ralph-config-backup.env

   # Update templates (preserves runs/)
   cp "$PLUGIN_ROOT/skills/flow-next-ralph-init/templates/ralph.sh" scripts/ralph/
   cp "$PLUGIN_ROOT/skills/flow-next-ralph-init/templates/ralph_once.sh" scripts/ralph/
   cp "$PLUGIN_ROOT/skills/flow-next-ralph-init/templates/prompt_plan.md" scripts/ralph/
   cp "$PLUGIN_ROOT/skills/flow-next-ralph-init/templates/prompt_work.md" scripts/ralph/
   cp "$PLUGIN_ROOT/skills/flow-next-ralph-init/templates/prompt_completion.md" scripts/ralph/
   cp "$PLUGIN_ROOT/skills/flow-next-ralph-init/templates/watch-filter.py" scripts/ralph/
   cp "$PLUGIN_ROOT/skills/flow-next-ralph-init/templates/ralphctl.py" scripts/ralph/
   cp "$PLUGIN_ROOT/scripts/flowctl" "$PLUGIN_ROOT/scripts/flowctl.cmd" "$PLUGIN_ROOT/scripts/flowctl.py" "$PLUGIN_ROOT/scripts/flowctl_bootstrap.py" "$PLUGIN_ROOT/scripts/flowctl-help.txt" "$PLUGIN_ROOT/scripts/lib/pick-python.sh" scripts/ralph/
   rm -rf scripts/ralph/flowctl_tracker && cp -R "$PLUGIN_ROOT/scripts/flowctl_tracker" scripts/ralph/flowctl_tracker
   # fn-139.5: verify the tracker package post-copy - fail loudly here, never
   # later as an ImportError mid-run
   python3 "$PLUGIN_ROOT/scripts/lib/verify_tracker_manifest.py" scripts/ralph
   mkdir -p scripts/ralph/hooks
   cp "$PLUGIN_ROOT/scripts/hooks/ralph-guard.py" "$PLUGIN_ROOT/scripts/hooks/ralph-guard" scripts/ralph/hooks/
   chmod +x scripts/ralph/ralph.sh scripts/ralph/ralph_once.sh scripts/ralph/flowctl scripts/ralph/ralphctl.py scripts/ralph/hooks/ralph-guard.py scripts/ralph/hooks/ralph-guard

   # Restore config.env
   cp /tmp/ralph-config-backup.env scripts/ralph/config.env
   ```

   **If UPDATE_MODE=0 (fresh install):**
   ```bash
   mkdir -p scripts/ralph/runs scripts/ralph/hooks
   cp -R "$PLUGIN_ROOT/skills/flow-next-ralph-init/templates/." scripts/ralph/
   cp "$PLUGIN_ROOT/scripts/flowctl" "$PLUGIN_ROOT/scripts/flowctl.cmd" "$PLUGIN_ROOT/scripts/flowctl.py" "$PLUGIN_ROOT/scripts/flowctl_bootstrap.py" "$PLUGIN_ROOT/scripts/flowctl-help.txt" "$PLUGIN_ROOT/scripts/lib/pick-python.sh" scripts/ralph/
   rm -rf scripts/ralph/flowctl_tracker && cp -R "$PLUGIN_ROOT/scripts/flowctl_tracker" scripts/ralph/flowctl_tracker
   # fn-139.5: verify the tracker package post-copy - fail loudly here, never
   # later as an ImportError mid-run
   python3 "$PLUGIN_ROOT/scripts/lib/verify_tracker_manifest.py" scripts/ralph
   cp "$PLUGIN_ROOT/scripts/hooks/ralph-guard.py" "$PLUGIN_ROOT/scripts/hooks/ralph-guard" scripts/ralph/hooks/
   chmod +x scripts/ralph/ralph.sh scripts/ralph/ralph_once.sh scripts/ralph/flowctl scripts/ralph/ralphctl.py scripts/ralph/hooks/ralph-guard.py scripts/ralph/hooks/ralph-guard
   ```
   Note: `cp -R templates/.` copies all files including dotfiles (.gitignore).

6. Edit `scripts/ralph/config.env` to set the chosen review backend (skip if UPDATE_MODE=1):
   - Replace `PLAN_REVIEW={{PLAN_REVIEW}}` with `PLAN_REVIEW=<chosen>`
   - Replace `WORK_REVIEW={{WORK_REVIEW}}` with `WORK_REVIEW=<chosen>`
   - Replace `COMPLETION_REVIEW={{COMPLETION_REVIEW}}` with `COMPLETION_REVIEW=<chosen>`

7. **Register project hooks (agent-driven; required for the guard to fire).**

   Detect host (same signals as `/flow-next:setup` Step 0 when available; otherwise probe the settings paths below). Then **Read** the target file, **merge** the flow-next Ralph guard entries, **Edit/Write** the result. **The host's existing hooks survive the merge** — a settings file whose hooks object now contains only flow-next entries has broken this. Idempotent: if an entry's `command` already contains `scripts/ralph/hooks/ralph-guard`, leave that matcher group alone (or refresh the command string to the canonical form below if it drifted).

   **Fingerprint** for "this is a flow-next Ralph guard entry": the hook `command` string contains `scripts/ralph/hooks/ralph-guard` (wrapper and/or `.py` fallback).

   **Canonical guard command** (same on every host that can run bash wrappers):

   ```
   if [ -f scripts/ralph/hooks/ralph-guard ]; then bash scripts/ralph/hooks/ralph-guard; elif [ -f scripts/ralph/hooks/ralph-guard.py ]; then scripts/ralph/hooks/ralph-guard.py; fi
   ```

   Timeout: `5` seconds. Type: `command`.

   ### Claude Code → merge into `.claude/settings.json`

   Target: project file `.claude/settings.json` (create `{"hooks":{}}` skeleton if missing; preserve every non-hooks key).

   Merge these four event groups under `hooks` (Claude schema). Matchers use regex OR so Droid interop and Claude share one entry shape:

   | Event | Matcher | Notes |
   |---|---|---|
   | `PreToolUse` | `Bash\|Execute` | shell (Claude `Bash`, Droid `Execute`) |
   | `PreToolUse` | `Edit\|Write` | file tools (Claude host names) |
   | `PostToolUse` | `Bash\|Execute` | shell |
   | `PostToolUse` | `Edit\|Write` | file tools (receipt-path gate parity) |
   | `Stop` | *(no matcher)* | stop gate |
   | `SubagentStop` | *(no matcher)* | subagent stop gate |

   Each event's array entry is one matcher group with a single hook object `{type, command, timeout}` using the canonical command above.

   **Consent gate:** Claude Code's project-hooks trust prompt is the human consent surface. Do not invent a second consent ceremony. After merge, tell the user they may need to accept/trust project hooks in the host UI for them to load this session.

   ### Factory Droid → merge into `.factory/hooks.json`

   Target (verified against Factory hooks-reference): project file **`.factory/hooks.json`**. Prefer that path. Fallback only if the project already stores hooks under the `hooks` key of `.factory/settings.json` and has no `.factory/hooks.json` — merge there instead; never invent a third path.

   Host-appropriate matchers for Droid (Factory's shell tool is `Execute`; file tools include `Create` / `ApplyPatch`). The guard body accepts the full dual-platform sets (`Bash`/`Execute`, `Edit`/`Write`/`Create`/`ApplyPatch`).

   | Event | Matcher | Notes |
   |---|---|---|
   | `PreToolUse` | `Bash\|Execute` | shell |
   | `PreToolUse` | `Edit\|Write\|Create\|ApplyPatch` | Droid file tools |
   | `PostToolUse` | `Bash\|Execute` | shell |
   | `PostToolUse` | `Edit\|Write\|Create\|ApplyPatch` | file tools (receipt-path gate) |
   | `Stop` | *(no matcher)* | stop gate |
   | `SubagentStop` | *(no matcher)* | subagent stop gate |

   Prefer project-relative command as above (Ralph harness is repo-local). If the host requires absolute paths, rewrite with `"$FACTORY_PROJECT_DIR"/scripts/ralph/hooks/...` but keep the same fingerprint substring `scripts/ralph/hooks/ralph-guard`.

   ### Codex → write/merge project `.codex/hooks.json`

   Codex has no Claude-schema plugin hooks auto-load from the marketplace plugin. Project scope is `.codex/hooks.json`.

   Codex subset (no `SubagentStop`; no `Edit`/`Write` matchers — Codex only intercepts shell):

   | Event | Matcher |
   |---|---|
   | `PreToolUse` | `Bash\|Execute` |
   | `PostToolUse` | `Bash\|Execute` |
   | `Stop` | *(no matcher)* |

   **The top-level JSON is exactly `{"hooks":{...}}`** — a sibling `description` key has broken this (Codex rejects unknown fields and disables all hooks).

   If `.codex/config.toml` exists, ensure exactly one `hooks = true` under `[features]` (drop deprecated `codex_hooks`). Same normalization intent as setup's historical Codex hooks step; do it with a careful edit, not a second copy of setup's python block unless you need it.

   ### Cursor / Grok

   - **Cursor:** Ralph hooks are unsupported (Cursor hook schema is `afterFileEdit` / `beforeShellExecution`). Scaffold `scripts/ralph/` only; print that the guard will not fire on Cursor; do not invent a Cursor-format hook file.
   - **Grok Build:** reads Claude-compat plugin/project surfaces; use the Claude Code path (`.claude/settings.json`).

   ### Re-run / update

   On UPDATE_MODE=1 still re-merge hooks so a project that had scaffold but lost settings entries is repaired. Skip only when every required event already has a fingerprinted entry with the canonical command.

   Done when: the host's registered event set matches its platform (Codex without `SubagentStop` or file-tool matchers; Droid with its own file-tool matchers; Cursor scaffold-only plus the printed will-not-fire note), every entry carries the canonical command, and unrelated hooks are still present.

8. Print next steps — **the run ends by printing them, never by starting the loop inside the session.** A session that executed `ralph.sh` has broken this:

   **If UPDATE_MODE=1:**
   ```
   Ralph updated! Your config.env was preserved.

   Hooks: project settings were re-merged (idempotent). Accept the host's
   project-hooks trust prompt if it appears.

   Run from terminal:
   - ./scripts/ralph/ralph_once.sh (one iteration, observe)
   - ./scripts/ralph/ralph.sh (full loop, AFK)
   - ./scripts/ralph/ralphctl.py status|pause|resume|stop  (run control; not flowctl)
   ```

   **If UPDATE_MODE=0:**
   ```
   Ralph initialized!

   Next steps (run from terminal, NOT inside the agent session):
   - Accept project-hooks trust if the host prompts (required once)
   - Edit scripts/ralph/config.env to customize settings
   - ./scripts/ralph/ralph_once.sh (one iteration, observe)
   - ./scripts/ralph/ralph.sh (full loop, AFK)
   - ./scripts/ralph/ralphctl.py status|pause|resume|stop  (run control; not flowctl)

   Maintenance:
   - Re-run /flow-next:ralph-init after plugin updates to refresh scripts + re-merge hooks
   - Uninstall: /flow-next:uninstall removes hook entries; then manually rm -rf scripts/ralph/ if desired
   ```