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J flagged that a prior version of this stack had Langfuse traces piping into the observer + Gitea MCP for repo ops — lost. Adding these as explicit Phase 40 deliverables alongside routing engine + Gemini/Claude adapters. Findings during scope-check: - Langfuse container is already running (Up 2 days, langfuse:2, localhost:3001 healthcheck passes) - mcp-server/tracing.ts + package.json already have SDK wired - Credentials pk-lf-staffing / sk-lf-staffing-secret (from env) - Gitea MCP binary still installed at gitea-mcp@0.0.10 So recovery here is mostly re-connecting existing infra: 1. Add Rust-side Langfuse client for /v1/chat tracing (gateway currently bypasses tracing, mcp-server already has it) 2. Wire Langfuse → observer :3800 pipe 3. Register Gitea MCP in mcp-server/index.ts tool list Each landing as part of Phase 40 when the routing engine ships.