[#76 #77 #78] Uni-Wizard Architecture - Single harness for all APIs
Complete uni-wizard implementation with unified tool registry:
**Core Architecture:**
- harness.py - Single entry point for all capabilities
- tools/registry.py - Central tool registry with schema generation
- Elegant routing: One harness, infinite capabilities
**Tool Categories (13 tools total):**
- System: system_info, process_list, service_status, service_control, health_check, disk_usage
- Git: git_status, git_log, git_pull, git_commit, git_push, git_checkout, git_branch_list
- Network: http_get, http_post, gitea_create_issue, gitea_comment, gitea_list_issues, gitea_get_issue
**Daemons:**
- health_daemon.py - HTTP endpoint on :8082, writes to ~/timmy/logs/health.json
- task_router.py - Polls Gitea for assigned issues, routes to tools, posts results
**Systemd Services:**
- timmy-health.service - Health monitoring daemon
- timmy-task-router.service - Gitea task router daemon
**Testing:**
- test_harness.py - Exercises all tool categories
**Design Principles:**
- Local-first: No cloud dependencies
- Self-healing: Tools can restart, reconnect, recover
- Unified: One consciousness, all capabilities
Closes #76, #77, #78
6685388357