Implement programmer agent system and consolidate agent infrastructure

Programmer Agent System:
- Add programmer-orchestrator (Opus) for workflow coordination
- Add code-planner (Sonnet) for design and planning
- Add code-implementer (Sonnet) for writing code
- Add code-reviewer (Sonnet) for quality review
- Add /programmer command and project registration skill
- Add state files for preferences and project context

Agent Infrastructure:
- Add master-orchestrator and linux-sysadmin agents
- Restructure skills to use SKILL.md subdirectory format
- Convert workflows from markdown to YAML format
- Add commands for k8s and sysadmin domains
- Add shared state files (model-policy, autonomy-levels, system-instructions)
- Add PA memory system (decisions, preferences, projects, facts)

Cleanup:
- Remove deprecated markdown skills and workflows
- Remove crontab example (moved to workflows)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

commands/pa.md

@@ -64,6 +64,15 @@ PA writes directly to general-instructions.json:
 /pa --help                  # Show this help
 ```
 
+### Knowledge Base
+
+```
+/pa --fact "<description>"          # Add fact (PA determines category)
+/pa --fact <cat>.<key>=<value>      # Add structured fact
+/pa --list-facts                    # Show all KB contents
+/pa --list-facts <category>         # Show specific category
+```
+
 ## Context Levels
 
 Context precedence (highest to lowest):