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

agents/community/toad/docker.com.toml

@@ -0,0 +1,59 @@
+# Schema defined in agent_schema.py
+# https://github.com/docker/cagent
+
+identity = "docker.com"
+name = "Docker cagent"
+short_name = "cagent"
+url = "https://docs.docker.com/ai/cagent/"
+protocol = "acp"
+author_name = "Docker"
+author_url = "https://www.docker.com/"
+publisher_name = "Will McGugan"
+publisher_url = "https://willmcgugan.github.io/"
+type = "coding"
+description = "Agent Builder and Runtime by Docker Engineering. Build, orchestrate, and share AI agents with MCP and ACP support."
+tags = []
+run_command."*" = "cagent acp"
+recommended = false
+
+help = '''
+# Docker cagent
+
+**Agent Builder and Runtime by Docker Engineering**
+
+Docker cagent lets you build, orchestrate, and share AI agents that work together as a team.
+
+## Key Features
+
+- **Hierarchical Agent System**: Intelligent task delegation between multiple agents
+- **Model Context Protocol (MCP)**: Rich tool ecosystem via MCP integration
+- **Multiple Interfaces**: CLI, TUI, API server, and MCP server modes
+- **Share & Distribute**: Package and share agents to Docker Hub as OCI artifacts
+
+## Agent Client Protocol Support
+
+cagent supports ACP, enabling integration with ACP-compatible editors and development environments.
+
+## Installation
+
+The easiest way to get cagent is to install Docker Desktop version 4.49 or later, which includes cagent.
+
+## Distribution
+
+Agent configurations can be packaged and shared using the `cagent push` command, treating agents as reproducible OCI artifacts.
+
+---
+
+**Documentation**: https://docs.docker.com/ai/cagent/  
+**GitHub**: https://github.com/docker/cagent  
+**Blog Post**: https://www.docker.com/blog/cagent-build-and-distribute-ai-agents-and-workflows/
+'''
+
+welcome = '''
+Say "hello" to CAgent!
+
+'''
+
+[actions."*".install]
+command = "echo 'Install Docker Desktop 4.49+ which includes cagent: https://www.docker.com/products/docker-desktop/'"
+description = "Install Docker Desktop with cagent"