Fix AGENTS.md to be minimal one-liner + explanatory text

- AGENTS.md (in user's ~/.codex/) now just tells Codex to run bootstrap
- Bootstrap contains all the critical rules and skill locations
- Updated INSTALL.md to show the simplified AGENTS.md example
- Added explanatory text: 'Superpowers teach you new skills and capabilities'

codex/INSTALL.md

@@ -21,34 +21,7 @@ Quick setup to enable superpowers skills in Codex.
    ## Superpowers System
 
    <EXTREMELY_IMPORTANT>
-   You have superpowers.
-
-   **RIGHT NOW, immediately run the bootstrap script:**
-
-   ```bash
-   ~/.codex/superpowers/scripts/superpowers-codex bootstrap
-   ```
-
-   This single command will:
-   - Show you the complete bootstrap instructions
-   - List all available skills
-   - Auto-load the using-superpowers skill
-
-   **Tool paths for ongoing use:**
-   - superpowers-codex: ~/.codex/superpowers/scripts/superpowers-codex
-
-   **Critical Rules:**
-   - Before ANY task, review the skills list (already shown in bootstrap)
-   - If a relevant skill exists, you MUST use superpowers-codex use-skill to load it
-   - Announce: "I've read the [Skill Name] skill and I'm using it to [purpose]"
-   - Skills with checklists require update_plan todos for each item
-   - NEVER skip mandatory workflows (brainstorming before coding, TDD, systematic debugging)
-
-   **Skills location:**
-   - Superpowers skills: ~/.codex/superpowers/skills/
-   - Personal skills: ~/.codex/skills/ (override superpowers when names match)
-
-   IF A SKILL APPLIES TO YOUR TASK, YOU DO NOT HAVE A CHOICE. YOU MUST USE IT.
+   You have superpowers. Superpowers teach you new skills and capabilities. RIGHT NOW run: `~/.codex/superpowers/scripts/superpowers-codex bootstrap` and follow the instructions it returns.
    </EXTREMELY_IMPORTANT>
    ```
 

codex/superpowers-bootstrap.md

@@ -19,11 +19,15 @@ When skills reference tools you don't have, substitute your equivalent tools:
 - Personal skills override superpowers skills when names match
 
 **Critical Rules:**
-- Before ANY task, check the skills list shown below
+- Before ANY task, review the skills list (shown below)
 - If a relevant skill exists, you MUST use `superpowers-codex use-skill` to load it
 - Announce: "I've read the [Skill Name] skill and I'm using it to [purpose]"
 - Skills with checklists require `update_plan` todos for each item
 - NEVER skip mandatory workflows (brainstorming before coding, TDD, systematic debugging)
 
+**Skills location:**
+- Superpowers skills: ~/.codex/superpowers/skills/
+- Personal skills: ~/.codex/skills/ (override superpowers when names match)
+
 IF A SKILL APPLIES TO YOUR TASK, YOU DO NOT HAVE A CHOICE. YOU MUST USE IT.
 </EXTREMELY_IMPORTANT>