Add community skills, agents, system prompts from 22+ sources

Community Skills (32):
- jat: jat-start, jat-verify, jat-complete
- pi-mono: codex-cli, codex-5.3-prompting, interactive-shell
- picoclaw: github, weather, tmux, summarize, skill-creator
- dyad: 18 skills (swarm-to-plan, multi-pr-review, fix-issue, lint, etc.)
- dexter: dcf valuation skill

Agents (23):
- pi-mono subagents: scout, planner, reviewer, worker
- toad: 19 agent configs (Claude, Codex, Gemini, Copilot, OpenCode, etc.)

System Prompts (91):
- Anthropic: 15 Claude prompts (opus-4.6, code, cowork, etc.)
- OpenAI: 49 GPT prompts (gpt-5 series, o3, o4-mini, tools)
- Google: 13 Gemini prompts (2.5-pro, 3-pro, workspace, cli)
- xAI: 5 Grok prompts
- Other: 9 misc prompts (Notion, Raycast, Warp, Kagi, etc.)

Hooks (9):
- JAT hooks for session management, signal tracking, activity logging

Prompts (6):
- pi-mono templates for PR review, issue analysis, changelog audit

Sources analyzed: jat, ralph-desktop, toad, pi-mono, cmux, pi-interactive-shell,
craft-agents-oss, dexter, picoclaw, dyad, system_prompts_leaks, Prometheus,
zed, clawdbot, OS-Copilot, and more

prompts/community/pi-mono/cl.md

@@ -0,0 +1,53 @@
+---
+description: Audit changelog entries before release
+---
+Audit changelog entries for all commits since the last release.
+
+## Process
+
+1. **Find the last release tag:**
+   ```bash
+   git tag --sort=-version:refname | head -1
+   ```
+
+2. **List all commits since that tag:**
+   ```bash
+   git log <tag>..HEAD --oneline
+   ```
+
+3. **Read each package's [Unreleased] section:**
+   - packages/ai/CHANGELOG.md
+   - packages/tui/CHANGELOG.md
+   - packages/coding-agent/CHANGELOG.md
+
+4. **For each commit, check:**
+   - Skip: changelog updates, doc-only changes, release housekeeping
+   - Determine which package(s) the commit affects (use `git show <hash> --stat`)
+   - Verify a changelog entry exists in the affected package(s)
+   - For external contributions (PRs), verify format: `Description ([#N](url) by [@user](url))`
+
+5. **Cross-package duplication rule:**
+   Changes in `ai`, `agent` or `tui` that affect end users should be duplicated to `coding-agent` changelog, since coding-agent is the user-facing package that depends on them.
+
+6. **Add New Features section after changelog fixes:**
+   - Insert a `### New Features` section at the start of `## [Unreleased]` in `packages/coding-agent/CHANGELOG.md`.
+   - Propose the top new features to the user for confirmation before writing them.
+   - Link to relevant docs and sections whenever possible.
+
+7. **Report:**
+   - List commits with missing entries
+   - List entries that need cross-package duplication
+   - Add any missing entries directly
+
+## Changelog Format Reference
+
+Sections (in order):
+- `### Breaking Changes` - API changes requiring migration
+- `### Added` - New features
+- `### Changed` - Changes to existing functionality
+- `### Fixed` - Bug fixes
+- `### Removed` - Removed features
+
+Attribution:
+- Internal: `Fixed foo ([#123](https://github.com/badlogic/pi-mono/issues/123))`
+- External: `Added bar ([#456](https://github.com/badlogic/pi-mono/pull/456) by [@user](https://github.com/user))`