chore: bootstrap repository with governance docs

Initialize git, add Apache-2.0 LICENSE, .gitattributes (LF line
endings), AGENTS.md (entry points, stack, discovery order, baseline
checks), RUNBOOK.md (dev boot, prod deploy with overlay, ingestion,
failures, rollback, scaling notes), .env.prod.example with rotated
credential placeholders, and dev-only warnings on .env.example.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/smoke_test.py

@@ -0,0 +1,74 @@
+"""Smoke test - verify all infrastructure is reachable and indices are present.
+
+Exits non-zero on first hard error.
+"""
+
+from __future__ import annotations
+
+import sys
+
+from sqlalchemy import text
+
+from app.db.session import get_engine
+from app.indexing.opensearch_client import ensure_index, get_opensearch
+from app.indexing.qdrant_client import ensure_collection, get_qdrant
+from app.logging_config import configure_logging, get_logger
+from app.storage.minio_client import get_storage
+
+configure_logging()
+logger = get_logger(__name__)
+
+
+def main() -> int:
+    failures: list[str] = []
+
+    # Postgres
+    try:
+        with get_engine().connect() as conn:
+            conn.execute(text("SELECT 1"))
+        print("[ok] postgres")
+    except Exception as exc:  # noqa: BLE001
+        failures.append(f"postgres: {exc}")
+        print(f"[err] postgres: {exc}")
+
+    # MinIO
+    try:
+        s = get_storage()
+        s.ensure_buckets()
+        info = s.health()
+        if info.get("status") != "ok":
+            raise RuntimeError(info)
+        print("[ok] minio:", info.get("buckets"))
+    except Exception as exc:  # noqa: BLE001
+        failures.append(f"minio: {exc}")
+        print(f"[err] minio: {exc}")
+
+    # OpenSearch
+    try:
+        ensure_index()
+        info = get_opensearch().cluster.health()
+        print("[ok] opensearch:", info.get("status"))
+    except Exception as exc:  # noqa: BLE001
+        failures.append(f"opensearch: {exc}")
+        print(f"[err] opensearch: {exc}")
+
+    # Qdrant
+    try:
+        ensure_collection()
+        cols = [c.name for c in get_qdrant().get_collections().collections]
+        print("[ok] qdrant collections:", cols)
+    except Exception as exc:  # noqa: BLE001
+        failures.append(f"qdrant: {exc}")
+        print(f"[err] qdrant: {exc}")
+
+    if failures:
+        print("\nSMOKE FAIL:")
+        for f in failures:
+            print(" -", f)
+        return 1
+    print("\nSMOKE OK")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())