brownfield

# /ouroboros:brownfield Scan a root directory for existing git repositories and linked worktrees, then manage default repos used as context in interviews. ## Usage ``` ooo brownfield # Scan repos and set defaults ooo brownfield scan # Scan only (no default selection) ooo brownfield defaults # Show current defaults ooo brownfield set 6,18,19 # Set defaults by repo numbers ooo brownfield detect [path] # Author mechanical.toml via one AI call ``` **Trigger keywords:** "brownfield", "scan repos", "default repos", "brownfield scan", "mechanical detect" --- ## How It Works ### Default flow (`ooo brownfield` with no args) **Step 1: Scan** Show scanning indicator: ``` ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Scanning for Existing Projects... ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Looking for git repositories and worktrees up to two directories below the scan root. Local repos and repos with any remote name are eligible. This may take a moment... ``` **Implementation — use MCP tools only, do NOT use CLI or Python scripts:** **CRITICAL — deferred-schema guard (prevents "Invalid tool parameters"):** This skill can call `ouroboros_brownfield` across multiple turns (`scan`, `set_defaults`, `defaults`, and `set`). A deferred schema loaded for one turn is NOT guaranteed to remain loaded for the next. Immediately before EVERY `ouroboros_brownfield` call, re-run `tool discovery query: "+ouroboros brownfield"` (idempotent — a no-op wh...