chore: Remove runtime artifacts from git tracking

This commit removes the following directories from git tracking (not from disk):
- .agent/ - AI tool configs
- .agents/ - Agent skills
- .augment/ - Augment AI
- .beads/ - Runtime database
- .claude/ - Claude AI configs
- .cline/ - Cline AI configs
- .openhands/ - OpenHands AI
- .dolt/ - Dolt database

These are now properly gitignored and will not appear in the repository.
This is a MASSIVE cleanup removing 1500+ files from version control.

.beads/templates/greenfield.json

@@ -1,17 +0,0 @@
-{
-  "id": "greenfield",
-  "name": "Greenfield Project",
-  "description": "Full team for starting new projects from scratch. Architect designs foundation, Engineers build core, Tester ensures quality, Shipper sets up deployment.",
-  "team": [
-    { "archetypeId": "architect", "count": 1 },
-    { "archetypeId": "engineer", "count": 3 },
-    { "archetypeId": "tester", "count": 1 },
-    { "archetypeId": "shipper", "count": 1 }
-  ],
-  "protoFormula": "Architect creates design and task breakdown → Engineers implement in parallel → Tester validates each component → Shipper prepares deployment pipeline",
-  "color": "#10b981",
-  "icon": "🌱",
-  "createdAt": "2026-02-25T00:00:00.000Z",
-  "updatedAt": "2026-02-25T00:00:00.000Z",
-  "isBuiltIn": true
-}