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

skills/community/dyad/lint/SKILL.md

@@ -0,0 +1,60 @@
+---
+name: dyad:lint
+description: Run pre-commit checks including formatting, linting, and type-checking, and fix any errors.
+---
+
+# Lint
+
+Run pre-commit checks including formatting, linting, and type-checking, and fix any errors.
+
+## Instructions
+
+1. **Run formatting check and fix:**
+
+   ```
+   npm run fmt
+   ```
+
+   This will automatically fix any formatting issues.
+
+2. **Run linting with auto-fix:**
+
+   ```
+   npm run lint:fix
+   ```
+
+   This will fix any auto-fixable lint errors.
+
+3. **Fix remaining lint errors manually:**
+
+   If there are lint errors that could not be auto-fixed, read the affected files and fix the errors manually. Common issues include:
+   - Unused variables or imports (remove them)
+   - Missing return types (add them)
+   - Any other ESLint rule violations
+
+4. **Run type-checking:**
+
+   ```
+   npm run ts
+   ```
+
+5. **Fix any type errors:**
+
+   If there are type errors, read the affected files and fix them. Common issues include:
+   - Type mismatches (correct the types)
+   - Missing type annotations (add them)
+   - Null/undefined handling issues (add appropriate checks)
+
+6. **Re-run all checks to verify:**
+
+   After making manual fixes, re-run the checks to ensure everything passes:
+
+   ```
+   npm run fmt && npm run lint && npm run ts
+   ```
+
+7. **Summarize the results:**
+   - Report which checks passed
+   - List any fixes that were made manually
+   - If any errors could not be fixed, explain why and ask the user for guidance
+   - If all checks pass, confirm the code is ready to commit