feat(bridge): Phase 4 — BrowserOS MCP registration + demo (1 chat message → commit in GB UI)

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✅ TRIOS v1.0 COMPLETE

34/34 tests · 0 fail · 90 expect() calls · 11 MCP tools

Final Deliverables

Phase	Deliverable	Status
0+1	Reconnaissance + scaffold (dual-MCP bridge, 10 tools)	✅
2	Vision analysis — 25/25 tests, 0 null fields	✅
3	E2E actions — commit/branch/push/undo, chain 4/4	✅
4	BrowserOS registration + integration + demo	✅

Architecture

BrowserOS MCP (:9105) ←─HTTP─→ TRIOS Bridge (:9200) ←─stdio─→ GitButler (but mcp --internal)
   (vision/CDP)              (11 tools)                (virtual branches/stacks)
                                ↕
                           git CLI fallback

11 MCP Tools

Category	Tools
Vision	gitbutler_analyze_ui, gitbutler_screenshot, gitbutler_workspace_status, gitbutler_bridge_health
Actions	gitbutler_commit_visible, gitbutler_create_branch, gitbutler_push_stack, gitbutler_stage, gitbutler_absorb, gitbutler_pull, gitbutler_undo_last_commit

Experience Log

.trinity/experience/trios_v1_complete.trinity — sealed

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φ² + 1/φ² = 3 | TRINITY | TRIOS v1.0 DONE 🔱