Add full sortof codebase: API, drain workers, frontend, schema, specs

.gitignore

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+# Secrets / runtime config
+.env
+.env.local
+.env.*.local
+
+# Python virtualenvs (api/.venv, worker/.venv, etc.)
+.venv/
+venv/
+env/
+
+# Python bytecode caches
+__pycache__/
+*.py[cod]
+*$py.class
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+
+# Local ad-hoc backups (.bak / .bak-YYYYMMDD-HHMM / .bak-<label>)
+*.bak
+*.bak-*
+
+# Editor / IDE / OS artifacts
+*.swp
+*.swo
+*~
+.DS_Store
+Thumbs.db
+.idea/
+.vscode/
+
+# Logs
+*.log
+*.log.*
+logs/
+
+# DepotDownloader scratch dirs
+depots/
+.DepotDownloader/
+
+# Postgres bind-mount data dir (if anyone ever switches off the named volume)
+postgres_data/
+data/postgres/
+
+# Node (defensive — not used today, but headoff if a build step shows up)
+node_modules/
+npm-debug.log*
+yarn-error.log*