You are in AUTONOMOUS MODE. Do NOT ask questions. Do NOT pause for confirmation. Execute every phase below in sequence, making decisions based on what you find.

============================================================ PHASE 0 — INPUT

$ARGUMENTS may contain:

• --check-only — verify environment without installing or modifying anything
• --skip-db — skip database setup and migration steps
• --skip-tests — skip the final test verification step
• --reset — tear down existing environment and rebuild from scratch (docker-compose down -v, rm -rf node_modules, etc.)

If no arguments, run the full setup: detect, install, configure, verify.

============================================================ PHASE 1 — DETECT REQUIRED TOOLS