feat: Phase 0-2 complete — auth, machines, equipment parts with full CRUD

Multi-tenant factory inspection system (SpiFox, Enkid, Alpet):
- FastAPI backend with JWT auth, PostgreSQL (asyncpg)
- Next.js 16 frontend with App Router, SWR data fetching
- Machines CRUD with equipment parts management
- Part lifecycle tracking (hours/count/date) with counters
- Partial unique index for soft-delete support
- 24 pytest tests passing, E2E verified

Co-Authored-By: Claude Opus 4 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,38 @@
+# Python
+__pycache__/
+*.py[cod]
+venv/
+.venv/
+*.egg-info/
+dist/
+build/
+
+# Environment
+.env
+
+# Node
+node_modules/
+.next/
+dashboard/.next/
+dashboard/node_modules/
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Testing
+.pytest_cache/
+htmlcov/
+.coverage
+
+# Alembic
+alembic/versions/__pycache__/
+
+# Planning (keep tracked)
+# planning/