---
name: flow-next-ralph-init
description: Scaffold the repo-local Ralph autonomous harness and project hooks. Use when asked to set up Ralph.
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="${CODEX_HOME:-$HOME/.codex}"
```

## Rules

- Only create/update `scripts/ralph/` in the current repo.
- 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` (NOT `scripts/ralph/lib/`) where `ralph.sh` and the hook wrapper source it.
- 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 ZERO hooks by default. You (the host agent) merge the guard entries into the project's host settings via Read+Edit. Never clobber unrelated hooks. Idempotent on re-run. **HARD BOUNDARY: no flowctl subcommand for hook install/remove/status — zero hook machinery in Python.**

## 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 MULTIPLE available, ask user. Only
 show the options whose CLIs were detected:
 ```
 Multiple review backends available. Which one?
 a) RepoPrompt (macOS, visual builder)
 b) Codex CLI (cross-platform, GPT 5.5 High)
 c) GitHub Copilot CLI (cross-platform, Claude/GPT via Copilot)
 d) Cursor CLI (cross-platform, runs cursor-agent; gpt-5.5-high via 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 (MUST use cp, NOT Write tool):

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

 # Update templates (preserves runs/)
 cp "${CODEX_HOME:-$HOME/.codex}/templates/flow-next-ralph-init/ralph.sh" scripts/ralph/
 cp "${CODEX_HOME:-$HOME/.codex}/templates/flow-next-ralph-init/ralph_once.sh" scripts/ralph/
 cp "${CODEX_HOME:-$HOME/.codex}/templates/flow-next-ralph-init/prompt_plan.md" scripts/ralph/
 cp "${CODEX_HOME:-$HOME/.codex}/templates/flow-next-ralph-init/prompt_work.md" scripts/ralph/
 cp "${CODEX_HOME:-$HOME/.codex}/templates/flow-next-ralph-init/prompt_completion.md" scripts/ralph/
 cp "${CODEX_HOME:-$HOME/.codex}/templates/flow-next-ralph-init/watch-filter.py" scripts/ralph/
 cp "${CODEX_HOME:-$HOME/.codex}/templates/flow-next-ralph-init/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 "${CODEX_HOME:-$HOME/.codex}/templates/flow-next-ralph-init/." 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. Never replace the whole hooks object with only our entries. 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)* |

 Top-level JSON must be **only** `{"hooks":{...}}` — no sibling `description` key (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.

8. Print next steps (run from terminal, NOT inside the agent session):

 **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
 ```