Lift superpowers:code-reviewer agent into the requesting-code-review skill

The plugin had a single named agent (`agents/code-reviewer.md`) used by
two skills, while every other reviewer/implementer subagent in the repo
is dispatched as `general-purpose` with the prompt template living
alongside its skill. That asymmetry had no upside and several costs:

- Two sources of truth for the code review checklist (the agent file
  and `requesting-code-review/code-reviewer.md`), both drifting
  independently.
- `Codex` users could not use the named agent directly; the codex-tools
  reference doc had a workaround section explaining how to flatten the
  named agent into a `worker` dispatch.
- No third-party reliance on `superpowers:code-reviewer` inside this
  repo.

Changes:
- Merge `agents/code-reviewer.md` (persona + checklist) and
  `skills/requesting-code-review/code-reviewer.md` (placeholder
  template) into a single self-contained Task-dispatch template,
  matching the shape of `implementer-prompt.md`,
  `spec-reviewer-prompt.md`, etc.
- Update `skills/requesting-code-review/SKILL.md` and
  `skills/subagent-driven-development/code-quality-reviewer-prompt.md`
  to dispatch `Task (general-purpose)` instead of the named agent.
- Drop the now-obsolete "Named agent dispatch" workaround sections from
  `codex-tools.md` and `copilot-tools.md` — superpowers no longer ships
  any named agents, so those instructions documented nothing.
- Delete `agents/code-reviewer.md` and the empty `agents/` directory.

Tier 3 coverage for the change: a new behavioral test
`tests/claude-code/test-requesting-code-review.sh` plants real bugs
(SQL injection, plaintext password handling, credential logging) into
a tiny project, runs the actual `requesting-code-review` skill against
the working tree, and asserts the dispatched reviewer flags every
planted issue at Critical/Important severity and refuses to approve
the diff.

Verified end-to-end on this branch:
- The new test passes (5/5 assertions; reviewer caught all planted
  bugs and several others).
- The existing SDD integration test still passes (7/7 subagents
  dispatched, all as `general-purpose`; spec compliance still
  rejects extra features; produced code is correct).
- Session JSONLs confirm zero remaining `superpowers:code-reviewer`
  dispatches anywhere in the SDD pipeline.

.codex/INSTALL.md

@@ -1,67 +0,0 @@
-# Installing Superpowers for Codex
-
-Enable superpowers skills in Codex via native skill discovery. Just clone and symlink.
-
-## Prerequisites
-
-- Git
-
-## Installation
-
-1. **Clone the superpowers repository:**
-   ```bash
-   git clone https://github.com/obra/superpowers.git ~/.codex/superpowers
-   ```
-
-2. **Create the skills symlink:**
-   ```bash
-   mkdir -p ~/.agents/skills
-   ln -s ~/.codex/superpowers/skills ~/.agents/skills/superpowers
-   ```
-
-   **Windows (PowerShell):**
-   ```powershell
-   New-Item -ItemType Directory -Force -Path "$env:USERPROFILE\.agents\skills"
-   cmd /c mklink /J "$env:USERPROFILE\.agents\skills\superpowers" "$env:USERPROFILE\.codex\superpowers\skills"
-   ```
-
-3. **Restart Codex** (quit and relaunch the CLI) to discover the skills.
-
-## Migrating from old bootstrap
-
-If you installed superpowers before native skill discovery, you need to:
-
-1. **Update the repo:**
-   ```bash
-   cd ~/.codex/superpowers && git pull
-   ```
-
-2. **Create the skills symlink** (step 2 above) — this is the new discovery mechanism.
-
-3. **Remove the old bootstrap block** from `~/.codex/AGENTS.md` — any block referencing `superpowers-codex bootstrap` is no longer needed.
-
-4. **Restart Codex.**
-
-## Verify
-
-```bash
-ls -la ~/.agents/skills/superpowers
-```
-
-You should see a symlink (or junction on Windows) pointing to your superpowers skills directory.
-
-## Updating
-
-```bash
-cd ~/.codex/superpowers && git pull
-```
-
-Skills update instantly through the symlink.
-
-## Uninstalling
-
-```bash
-rm ~/.agents/skills/superpowers
-```
-
-Optionally delete the clone: `rm -rf ~/.codex/superpowers`.

docs/README.codex.md

@@ -1,126 +0,0 @@
-# Superpowers for Codex
-
-Guide for using Superpowers with OpenAI Codex via native skill discovery.
-
-## Quick Install
-
-Tell Codex:
-
-```
-Fetch and follow instructions from https://raw.githubusercontent.com/obra/superpowers/refs/heads/main/.codex/INSTALL.md
-```
-
-## Manual Installation
-
-### Prerequisites
-
-- OpenAI Codex CLI
-- Git
-
-### Steps
-
-1. Clone the repo:
-   ```bash
-   git clone https://github.com/obra/superpowers.git ~/.codex/superpowers
-   ```
-
-2. Create the skills symlink:
-   ```bash
-   mkdir -p ~/.agents/skills
-   ln -s ~/.codex/superpowers/skills ~/.agents/skills/superpowers
-   ```
-
-3. Restart Codex.
-
-4. **For subagent skills** (optional): Skills like `dispatching-parallel-agents` and `subagent-driven-development` require Codex's multi-agent feature. Add to your Codex config:
-   ```toml
-   [features]
-   multi_agent = true
-   ```
-
-### Windows
-
-Use a junction instead of a symlink (works without Developer Mode):
-
-```powershell
-New-Item -ItemType Directory -Force -Path "$env:USERPROFILE\.agents\skills"
-cmd /c mklink /J "$env:USERPROFILE\.agents\skills\superpowers" "$env:USERPROFILE\.codex\superpowers\skills"
-```
-
-## How It Works
-
-Codex has native skill discovery — it scans `~/.agents/skills/` at startup, parses SKILL.md frontmatter, and loads skills on demand. Superpowers skills are made visible through a single symlink:
-
-```
-~/.agents/skills/superpowers/ → ~/.codex/superpowers/skills/
-```
-
-The `using-superpowers` skill is discovered automatically and enforces skill usage discipline — no additional configuration needed.
-
-## Usage
-
-Skills are discovered automatically. Codex activates them when:
-- You mention a skill by name (e.g., "use brainstorming")
-- The task matches a skill's description
-- The `using-superpowers` skill directs Codex to use one
-
-### Personal Skills
-
-Create your own skills in `~/.agents/skills/`:
-
-```bash
-mkdir -p ~/.agents/skills/my-skill
-```
-
-Create `~/.agents/skills/my-skill/SKILL.md`:
-
-```markdown
----
-name: my-skill
-description: Use when [condition] - [what it does]
----
-
-# My Skill
-
-[Your skill content here]
-```
-
-The `description` field is how Codex decides when to activate a skill automatically — write it as a clear trigger condition.
-
-## Updating
-
-```bash
-cd ~/.codex/superpowers && git pull
-```
-
-Skills update instantly through the symlink.
-
-## Uninstalling
-
-```bash
-rm ~/.agents/skills/superpowers
-```
-
-**Windows (PowerShell):**
-```powershell
-Remove-Item "$env:USERPROFILE\.agents\skills\superpowers"
-```
-
-Optionally delete the clone: `rm -rf ~/.codex/superpowers` (Windows: `Remove-Item -Recurse -Force "$env:USERPROFILE\.codex\superpowers"`).
-
-## Troubleshooting
-
-### Skills not showing up
-
-1. Verify the symlink: `ls -la ~/.agents/skills/superpowers`
-2. Check skills exist: `ls ~/.codex/superpowers/skills`
-3. Restart Codex — skills are discovered at startup
-
-### Windows junction issues
-
-Junctions normally work without special permissions. If creation fails, try running PowerShell as administrator.
-
-## Getting Help
-
-- Report issues: https://github.com/obra/superpowers/issues
-- Main documentation: https://github.com/obra/superpowers

skills/using-superpowers/references/gemini-tools.md

@@ -14,11 +14,29 @@ Skills use Claude Code tool names. When you encounter these in a skill, use your
 | `Skill` tool (invoke a skill) | `activate_skill` |
 | `WebSearch` | `google_web_search` |
 | `WebFetch` | `web_fetch` |
-| `Task` tool (dispatch subagent) | No equivalent — Gemini CLI does not support subagents |
+| `Task` tool (dispatch subagent) | `@agent-name` (see [Subagent support](#subagent-support)) |
 
-## No subagent support
+## Subagent support
 
-Gemini CLI has no equivalent to Claude Code's `Task` tool. Skills that rely on subagent dispatch (`subagent-driven-development`, `dispatching-parallel-agents`) will fall back to single-session execution via `executing-plans`.
+Gemini CLI supports subagents natively via the `@` syntax. Use the built-in `@generalist` agent to dispatch any task — it has access to all tools and follows the prompt you provide.
+
+When a skill says to dispatch a named agent type, use `@generalist` with the full prompt from the skill's prompt template:
+
+| Skill instruction | Gemini CLI equivalent |
+|-------------------|----------------------|
+| `Task tool (superpowers:implementer)` | `@generalist` with the filled `implementer-prompt.md` template |
+| `Task tool (superpowers:spec-reviewer)` | `@generalist` with the filled `spec-reviewer-prompt.md` template |
+| `Task tool (superpowers:code-reviewer)` | `@code-reviewer` (bundled agent) or `@generalist` with the filled review prompt |
+| `Task tool (superpowers:code-quality-reviewer)` | `@generalist` with the filled `code-quality-reviewer-prompt.md` template |
+| `Task tool (general-purpose)` with inline prompt | `@generalist` with your inline prompt |
+
+### Prompt filling
+
+Skills provide prompt templates with placeholders like `{WHAT_WAS_IMPLEMENTED}` or `[FULL TEXT of task]`. Fill all placeholders and pass the complete prompt as the message to `@generalist`. The prompt template itself contains the agent's role, review criteria, and expected output format — `@generalist` will follow it.
+
+### Parallel dispatch
+
+Gemini CLI supports parallel subagent dispatch. When a skill asks you to dispatch multiple independent subagent tasks in parallel, request all of those `@generalist` or named subagent tasks together in the same prompt. Keep dependent tasks sequential, but do not serialize independent subagent tasks just to preserve a simpler history.
 
 ## Additional Gemini CLI tools