diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..6c3e72f
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,64 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install ruff
+        run: pip install ruff>=0.8.0
+
+      - name: Ruff check
+        run: ruff check .
+
+      - name: Ruff format check
+        run: ruff format --check .
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    needs: lint
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Cache pip
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
+          restore-keys: ${{ runner.os }}-pip-
+
+      - name: Install dependencies
+        run: pip install -r requirements.txt
+
+      - name: Run tests
+        run: pytest -v --tb=short
+
+  docker:
+    name: Docker Build
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build image
+        run: docker build -t adiuva-api:ci .
+
+      - name: Verify gunicorn installed
+        run: docker run --rm adiuva-api:ci gunicorn --version
diff --git a/BACKEND_PLAN.md b/BACKEND_PLAN.md
index bc37989..ab6d3c9 100644
--- a/BACKEND_PLAN.md
+++ b/BACKEND_PLAN.md
@@ -453,16 +453,16 @@ adiuva-api/
 - [x] SQLAlchemy models in `app/models.py`
 - **Outcome:** Auth, billing, storage metadata, and marketplace persistence. Zero user data in plaintext.
 
-### Step 13 — Testing & deployment
-- [ ] `tests/conftest.py`: TestClient fixture, mock LLM fixture (`AsyncMock` returning canned responses), mock agent fixture, test DB (SQLite in-memory for speed), mock S3 (moto), mock Pinecone
-- [ ] `tests/test_orchestrator.py`: classify_intent routing, single agent, pipeline, plan mode
-- [ ] `tests/test_agents.py`: each agent with mocked tools
-- [ ] `tests/test_auth.py`: register → login → access protected → refresh → expired token
-- [ ] `tests/test_backup.py`: upload → download → history → delete, tier limit enforcement
-- [ ] `tests/test_storage.py`: create record → list → download → update → delete, checksum rejection, quota enforcement
-- [ ] `tests/test_plugins.py`: list plugins, install, uninstall, revenue event creation, tier gate (free user blocked)
-- [ ] `Dockerfile` optimized for production (gunicorn + uvicorn workers)
-- [ ] GitHub Actions CI: lint (ruff), test (pytest), build Docker image
+### Step 13 — Testing & deployment ✅
+- [x] `tests/conftest.py`: TestClient fixture, mock LLM fixture (`AsyncMock` returning canned responses), mock agent fixture, test DB (SQLite in-memory for speed), mock S3 (moto), mock Pinecone
+- [x] `tests/test_orchestrator.py`: classify_intent routing, single agent, pipeline, plan mode
+- [x] `tests/test_agents.py`: each agent with mocked tools
+- [x] `tests/test_auth.py`: register → login → access protected → refresh → expired token
+- [x] `tests/test_backup.py`: upload → download → history → delete, tier limit enforcement
+- [x] `tests/test_storage.py`: create record → list → download → update → delete, checksum rejection, quota enforcement
+- [x] `tests/test_plugins.py`: list plugins, install, uninstall, revenue event creation, tier gate (free user blocked)
+- [x] `Dockerfile` optimized for production (gunicorn + uvicorn workers)
+- [x] GitHub Actions CI: lint (ruff), test (pytest), build Docker image
 - **Outcome:** Fully tested, deployable backend.
 
 ---
diff --git a/Dockerfile b/Dockerfile
index 2de9a06..32496db 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,6 +21,10 @@ COPY --from=builder /install /usr/local
 # Copy application source
 COPY app/ app/
 
+# Copy Alembic migration files
+COPY alembic/ alembic/
+COPY alembic.ini .
+
 # Ensure appuser owns the working directory
 RUN chown -R appuser:appgroup /app
 
@@ -28,4 +32,8 @@ USER appuser
 
 EXPOSE 8000
 
-CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "2"]
+CMD ["gunicorn", "app.main:app", \
+     "-k", "uvicorn.workers.UvicornWorker", \
+     "--bind", "0.0.0.0:8000", \
+     "--workers", "4", \
+     "--timeout", "120"]
diff --git a/requirements.txt b/requirements.txt
index b0d98ed..8436567 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 fastapi>=0.115.0
 uvicorn[standard]>=0.34.0
+gunicorn>=22.0.0
 langchain>=0.3.0
 langchain-openai>=0.3.0
 pydantic>=2.10.0
@@ -22,3 +23,4 @@ aiosqlite>=0.20.0
 moto[s3]>=5.0.0
 pinecone>=5.0.0
 qdrant-client>=1.7.0
+ruff>=0.8.0
diff --git a/tests/conftest.py b/tests/conftest.py
index a4837d7..d4b5438 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -6,15 +6,20 @@ a per-test session, and a FastAPI ``TestClient`` wired to use it.
 
 from __future__ import annotations
 
+import hashlib
 import json
+import os
 import time
 import uuid
 from collections.abc import AsyncGenerator, Generator
+from unittest.mock import patch
 
+import boto3
 import pytest
 import pytest_asyncio
 from fastapi.testclient import TestClient
 from jose import jwt
+from moto import mock_aws
 from sqlalchemy import StaticPool, event
 from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
 
@@ -206,3 +211,26 @@ def make_jwt(
 def auth_header(tier: str = "power", user_id: str | None = None) -> dict[str, str]:
     """Return an Authorization header dict for the given tier."""
     return {"Authorization": f"Bearer {make_jwt(tier, user_id)}"}
+
+
+# ── S3 mock fixture ──────────────────────────────────────────────────
+
+S3_TEST_BUCKET = "test-bucket"
+S3_TEST_REGION = "us-east-1"
+
+
+@pytest.fixture
+def s3_bucket():
+    """Create a mocked S3 bucket via moto and patch BlobStore settings."""
+    with mock_aws():
+        os.environ.setdefault("AWS_ACCESS_KEY_ID", "testing")
+        os.environ.setdefault("AWS_SECRET_ACCESS_KEY", "testing")
+        os.environ.setdefault("AWS_DEFAULT_REGION", S3_TEST_REGION)
+        client = boto3.client("s3", region_name=S3_TEST_REGION)
+        client.create_bucket(Bucket=S3_TEST_BUCKET)
+        with patch("app.storage.blob_store.settings") as mock_settings:
+            mock_settings.S3_BUCKET = S3_TEST_BUCKET
+            mock_settings.S3_REGION = S3_TEST_REGION
+            mock_settings.AWS_ACCESS_KEY_ID = "testing"
+            mock_settings.AWS_SECRET_ACCESS_KEY = "testing"
+            yield S3_TEST_BUCKET
diff --git a/tests/test_auth.py b/tests/test_auth.py
new file mode 100644
index 0000000..db8f46e
--- /dev/null
+++ b/tests/test_auth.py
@@ -0,0 +1,207 @@
+"""Tests for auth routes: register, login, refresh, me.
+
+Exercises the full auth lifecycle through the FastAPI TestClient against the
+in-memory SQLite test database seeded by ``conftest.py``.
+"""
+
+from __future__ import annotations
+
+import time
+
+import pytest
+from jose import jwt
+
+from app.config.settings import settings
+from tests.conftest import auth_header, make_jwt, TEST_USER_IDS
+
+
+# ── TestRegister ──────────────────────────────────────────────────────
+
+
+class TestRegister:
+    """POST /api/v1/auth/register"""
+
+    def test_register_success(self, client) -> None:
+        resp = client.post(
+            "/api/v1/auth/register",
+            json={"email": "new@example.com", "password": "Str0ngP@ss!"},
+        )
+        assert resp.status_code == 201
+        data = resp.json()
+        assert "access_token" in data
+        assert "refresh_token" in data
+        assert "expires_at" in data
+        # expires_at should be a future millisecond timestamp
+        assert data["expires_at"] > int(time.time() * 1000)
+
+    def test_register_returns_valid_jwt(self, client) -> None:
+        resp = client.post(
+            "/api/v1/auth/register",
+            json={"email": "jwt-check@example.com", "password": "P@ss1234"},
+        )
+        assert resp.status_code == 201
+        token = resp.json()["access_token"]
+        payload = jwt.decode(token, settings.JWT_SECRET, algorithms=[settings.JWT_ALGORITHM])
+        assert payload["email"] == "jwt-check@example.com"
+        assert payload["tier"] == "free"
+        assert "sub" in payload
+
+    def test_register_duplicate_email(self, client) -> None:
+        client.post(
+            "/api/v1/auth/register",
+            json={"email": "dupe@example.com", "password": "Pass1234"},
+        )
+        resp = client.post(
+            "/api/v1/auth/register",
+            json={"email": "dupe@example.com", "password": "Pass5678"},
+        )
+        assert resp.status_code == 409
+
+    def test_register_missing_password(self, client) -> None:
+        resp = client.post(
+            "/api/v1/auth/register",
+            json={"email": "no-pass@example.com"},
+        )
+        assert resp.status_code == 422
+
+    def test_register_missing_email(self, client) -> None:
+        resp = client.post(
+            "/api/v1/auth/register",
+            json={"password": "OnlyPass"},
+        )
+        assert resp.status_code == 422
+
+
+# ── TestLogin ─────────────────────────────────────────────────────────
+
+
+class TestLogin:
+    """POST /api/v1/auth/login"""
+
+    def _register(self, client, email="login@example.com", password="MyP@ss123"):
+        client.post(
+            "/api/v1/auth/register",
+            json={"email": email, "password": password},
+        )
+
+    def test_login_success(self, client) -> None:
+        self._register(client)
+        resp = client.post(
+            "/api/v1/auth/login",
+            json={"email": "login@example.com", "password": "MyP@ss123"},
+        )
+        assert resp.status_code == 200
+        data = resp.json()
+        assert "access_token" in data
+        assert "refresh_token" in data
+        assert "expires_at" in data
+
+    def test_login_wrong_password(self, client) -> None:
+        self._register(client)
+        resp = client.post(
+            "/api/v1/auth/login",
+            json={"email": "login@example.com", "password": "WrongPass!"},
+        )
+        assert resp.status_code == 401
+
+    def test_login_unknown_email(self, client) -> None:
+        resp = client.post(
+            "/api/v1/auth/login",
+            json={"email": "ghost@example.com", "password": "Whatever"},
+        )
+        assert resp.status_code == 401
+
+
+# ── TestRefresh ───────────────────────────────────────────────────────
+
+
+class TestRefresh:
+    """POST /api/v1/auth/refresh"""
+
+    def _register_and_get_tokens(self, client, email="refresh@example.com"):
+        resp = client.post(
+            "/api/v1/auth/register",
+            json={"email": email, "password": "RefPass123!"},
+        )
+        return resp.json()
+
+    def test_refresh_returns_new_tokens(self, client) -> None:
+        tokens = self._register_and_get_tokens(client)
+        resp = client.post(
+            "/api/v1/auth/refresh",
+            json={"refresh_token": tokens["refresh_token"]},
+        )
+        assert resp.status_code == 200
+        data = resp.json()
+        assert "access_token" in data
+        assert "refresh_token" in data
+        # New refresh token should differ from old one (rotation)
+        assert data["refresh_token"] != tokens["refresh_token"]
+
+    def test_refresh_old_token_rejected(self, client) -> None:
+        """After rotation, the original refresh token must be rejected."""
+        tokens = self._register_and_get_tokens(client, email="rotate@example.com")
+        old_rt = tokens["refresh_token"]
+
+        # First refresh succeeds and rotates the token
+        client.post("/api/v1/auth/refresh", json={"refresh_token": old_rt})
+
+        # Second attempt with the old token must fail
+        resp = client.post("/api/v1/auth/refresh", json={"refresh_token": old_rt})
+        assert resp.status_code == 401
+
+    def test_refresh_bogus_token(self, client) -> None:
+        resp = client.post(
+            "/api/v1/auth/refresh",
+            json={"refresh_token": "not-a-real-token"},
+        )
+        assert resp.status_code == 401
+
+
+# ── TestMe ────────────────────────────────────────────────────────────
+
+
+class TestMe:
+    """GET /api/v1/auth/me"""
+
+    def test_me_with_valid_jwt(self, client) -> None:
+        resp = client.get("/api/v1/auth/me", headers=auth_header("power"))
+        assert resp.status_code == 200
+        data = resp.json()
+        assert data["id"] == TEST_USER_IDS["power"]
+        assert data["email"] == "power@test.com"
+        assert data["tier"] == "power"
+
+    def test_me_returns_correct_tier(self, client) -> None:
+        """Tier comes from the live subscription row, not the JWT claim."""
+        resp = client.get("/api/v1/auth/me", headers=auth_header("free"))
+        assert resp.json()["tier"] == "free"
+
+    def test_me_missing_token(self, client) -> None:
+        resp = client.get("/api/v1/auth/me")
+        assert resp.status_code == 401
+
+    def test_me_expired_token(self, client) -> None:
+        """A JWT with ``exp`` in the past must be rejected."""
+        payload = {
+            "sub": TEST_USER_IDS["power"],
+            "email": "power@test.com",
+            "tier": "power",
+            "exp": int(time.time()) - 3600,  # 1 hour ago
+            "iat": int(time.time()) - 7200,
+        }
+        token = jwt.encode(payload, settings.JWT_SECRET, algorithm=settings.JWT_ALGORITHM)
+        resp = client.get("/api/v1/auth/me", headers={"Authorization": f"Bearer {token}"})
+        assert resp.status_code == 401
+
+    def test_me_invalid_signature(self, client) -> None:
+        payload = {
+            "sub": TEST_USER_IDS["power"],
+            "email": "power@test.com",
+            "tier": "power",
+            "exp": int(time.time()) + 3600,
+            "iat": int(time.time()),
+        }
+        token = jwt.encode(payload, "wrong-secret", algorithm="HS256")
+        resp = client.get("/api/v1/auth/me", headers={"Authorization": f"Bearer {token}"})
+        assert resp.status_code == 401
diff --git a/tests/test_backup.py b/tests/test_backup.py
new file mode 100644
index 0000000..2d3253d
--- /dev/null
+++ b/tests/test_backup.py
@@ -0,0 +1,244 @@
+"""Tests for backup routes: upload, download, history, delete.
+
+Exercises the backup lifecycle through the FastAPI TestClient against the
+in-memory SQLite test database and moto-mocked S3 bucket.
+"""
+
+from __future__ import annotations
+
+import hashlib
+
+import pytest
+
+from tests.conftest import auth_header, TEST_USER_IDS
+
+
+# ── Helpers ───────────────────────────────────────────────────────────
+
+_BLOB = b"encrypted-backup-blob-opaque-bytes"
+_CHECKSUM = hashlib.sha256(_BLOB).hexdigest()
+_VERSION = 1
+_TIMESTAMP = 1700000000000  # arbitrary ms timestamp
+
+
+def _backup_headers(tier: str = "power", **overrides) -> dict[str, str]:
+    """Return auth + backup metadata headers."""
+    headers = auth_header(tier)
+    headers["X-Backup-Version"] = str(overrides.get("version", _VERSION))
+    headers["X-Backup-Timestamp"] = str(overrides.get("timestamp", _TIMESTAMP))
+    headers["X-Backup-Checksum"] = overrides.get("checksum", _CHECKSUM)
+    headers["Content-Type"] = "application/octet-stream"
+    return headers
+
+
+def _upload(client, tier="power", **overrides) -> "Response":  # noqa: F821
+    """Upload a backup blob and return the response."""
+    return client.put(
+        "/api/v1/backup",
+        content=overrides.pop("blob", _BLOB),
+        headers=_backup_headers(tier, **overrides),
+    )
+
+
+# ── TestUploadBackup ──────────────────────────────────────────────────
+
+
+class TestUploadBackup:
+    """PUT /api/v1/backup"""
+
+    def test_upload_success(self, client, s3_bucket) -> None:
+        resp = _upload(client, tier="power")
+        assert resp.status_code == 200
+        assert resp.json() == {"ok": True}
+
+    def test_upload_creates_history_entry(self, client, s3_bucket) -> None:
+        _upload(client, tier="power")
+        history = client.get(
+            "/api/v1/backup/history", headers=auth_header("power")
+        ).json()
+        assert len(history) == 1
+        assert history[0]["version"] == _VERSION
+        assert history[0]["timestamp"] == _TIMESTAMP
+        assert history[0]["checksum"] == _CHECKSUM
+
+    def test_upload_bad_checksum(self, client, s3_bucket) -> None:
+        resp = _upload(client, tier="power", checksum="0" * 64)
+        assert resp.status_code == 400
+
+    def test_upload_free_tier_blocked(self, client, s3_bucket) -> None:
+        """Free tier has backup_gb=0 → should return 402."""
+        resp = _upload(client, tier="free")
+        assert resp.status_code == 402
+
+    def test_upload_pro_tier_allowed(self, client, s3_bucket) -> None:
+        """Pro tier has backup_gb=5 → small blob succeeds."""
+        resp = _upload(client, tier="pro")
+        assert resp.status_code == 200
+
+
+# ── TestDownloadBackup ────────────────────────────────────────────────
+
+
+class TestDownloadBackup:
+    """GET /api/v1/backup"""
+
+    def test_download_latest(self, client, s3_bucket) -> None:
+        _upload(client, tier="power")
+        resp = client.get("/api/v1/backup", headers=auth_header("power"))
+        assert resp.status_code == 200
+        assert resp.content == _BLOB
+        assert resp.headers["X-Checksum"] == _CHECKSUM
+        assert resp.headers["X-Backup-Version"] == str(_VERSION)
+
+    def test_download_no_backup_returns_404(self, client, s3_bucket) -> None:
+        resp = client.get("/api/v1/backup", headers=auth_header("power"))
+        assert resp.status_code == 404
+
+    def test_download_if_modified_since_returns_304(self, client, s3_bucket) -> None:
+        """When If-Modified-Since is after the backup timestamp → 304."""
+        _upload(client, tier="power", timestamp=1700000000000)
+        resp = client.get(
+            "/api/v1/backup",
+            headers={
+                **auth_header("power"),
+                "If-Modified-Since": "Thu, 01 Jan 2099 00:00:00 GMT",
+            },
+        )
+        assert resp.status_code == 304
+
+    def test_download_if_modified_since_returns_200(self, client, s3_bucket) -> None:
+        """When If-Modified-Since is before the backup timestamp → serve blob."""
+        _upload(client, tier="power", timestamp=1700000000000)
+        resp = client.get(
+            "/api/v1/backup",
+            headers={
+                **auth_header("power"),
+                "If-Modified-Since": "Thu, 01 Jan 2000 00:00:00 GMT",
+            },
+        )
+        assert resp.status_code == 200
+        assert resp.content == _BLOB
+
+    def test_download_multiple_returns_latest(self, client, s3_bucket) -> None:
+        """When multiple backups exist, GET returns the one with the highest timestamp."""
+        _upload(client, tier="power", timestamp=1000)
+        blob2 = b"second-encrypted-backup"
+        checksum2 = hashlib.sha256(blob2).hexdigest()
+        _upload(client, tier="power", timestamp=2000, blob=blob2, checksum=checksum2)
+        resp = client.get("/api/v1/backup", headers=auth_header("power"))
+        assert resp.status_code == 200
+        assert resp.content == blob2
+
+
+# ── TestBackupHistory ─────────────────────────────────────────────────
+
+
+class TestBackupHistory:
+    """GET /api/v1/backup/history"""
+
+    def test_history_empty(self, client, s3_bucket) -> None:
+        resp = client.get("/api/v1/backup/history", headers=auth_header("power"))
+        assert resp.status_code == 200
+        assert resp.json() == []
+
+    def test_history_returns_entries(self, client, s3_bucket) -> None:
+        _upload(client, tier="power", timestamp=1000)
+        _upload(client, tier="power", timestamp=2000)
+        history = client.get(
+            "/api/v1/backup/history", headers=auth_header("power")
+        ).json()
+        assert len(history) == 2
+        # Ordered by timestamp descending
+        assert history[0]["timestamp"] == 2000
+        assert history[1]["timestamp"] == 1000
+
+    def test_history_isolated_per_user(self, client, s3_bucket) -> None:
+        """One user's backups should not appear in another user's history."""
+        _upload(client, tier="power")
+        resp = client.get("/api/v1/backup/history", headers=auth_header("team"))
+        assert resp.json() == []
+
+
+# ── TestDeleteBackup ──────────────────────────────────────────────────
+
+
+class TestDeleteBackup:
+    """DELETE /api/v1/backup/{backup_id}"""
+
+    def _get_backup_id(self, client, tier="power") -> str:
+        """Upload a backup and return its DB id from history."""
+        _upload(client, tier=tier)
+        history = client.get(
+            "/api/v1/backup/history", headers=auth_header(tier)
+        ).json()
+        # History returns BackupMetadata schema which doesn't have `id`.
+        # We need to look it up via a different means.
+        # Since there's only 1 backup, find via history length.
+        # Actually the schema doesn't return id — let's verify via re-download.
+        # We'll use a workaround: upload, then list history to confirm it exists,
+        # then try to delete — but we need the id...
+        # Let's check if history includes an id field.
+        # The schema is: version, timestamp, checksum, chunk_count — no id.
+        # We'll need to query the DB directly or use a known ID.
+        # For testing, we'll search history then use the DB.
+        return None  # pragma: no cover — overridden below
+
+    def test_delete_success(self, client, s3_bucket, db_session) -> None:
+        _upload(client, tier="power")
+
+        # Discover the backup_id via direct DB query
+        import asyncio
+        from sqlalchemy import select
+        from app.models import BackupMetadata
+
+        async def _get_id():
+            result = await db_session.execute(
+                select(BackupMetadata.id).where(
+                    BackupMetadata.user_id == TEST_USER_IDS["power"]
+                )
+            )
+            return result.scalar_one()
+
+        backup_id = asyncio.get_event_loop().run_until_complete(_get_id())
+
+        resp = client.delete(
+            f"/api/v1/backup/{backup_id}", headers=auth_header("power")
+        )
+        assert resp.status_code == 200
+        assert resp.json() == {"ok": True}
+
+        # History should now be empty
+        history = client.get(
+            "/api/v1/backup/history", headers=auth_header("power")
+        ).json()
+        assert history == []
+
+    def test_delete_nonexistent(self, client, s3_bucket) -> None:
+        resp = client.delete(
+            "/api/v1/backup/no-such-id", headers=auth_header("power")
+        )
+        assert resp.status_code == 404
+
+    def test_delete_other_users_backup(self, client, s3_bucket, db_session) -> None:
+        """Cannot delete another user's backup (ownership check returns 404)."""
+        _upload(client, tier="power")
+
+        import asyncio
+        from sqlalchemy import select
+        from app.models import BackupMetadata
+
+        async def _get_id():
+            result = await db_session.execute(
+                select(BackupMetadata.id).where(
+                    BackupMetadata.user_id == TEST_USER_IDS["power"]
+                )
+            )
+            return result.scalar_one()
+
+        backup_id = asyncio.get_event_loop().run_until_complete(_get_id())
+
+        # team user tries to delete power user's backup → 404
+        resp = client.delete(
+            f"/api/v1/backup/{backup_id}", headers=auth_header("team")
+        )
+        assert resp.status_code == 404
diff --git a/tests/test_storage.py b/tests/test_storage.py
index 3e6a7dc..881854d 100644
--- a/tests/test_storage.py
+++ b/tests/test_storage.py
@@ -1,48 +1,30 @@
-"""Tests for the storage layer: encryption, BlobStore, and VectorStore."""
+"""Tests for the storage layer: encryption, BlobStore, VectorStore, and storage routes."""
 
 from __future__ import annotations
 
 import base64
 import hashlib
-import os
 from unittest.mock import MagicMock, patch
 
 import boto3
 import pytest
 from botocore.exceptions import ClientError
-from moto import mock_aws
 
 from app.storage.encryption import reject_if_tampered, verify_checksum
 from app.storage.blob_store import BlobStore
 from app.storage.vector_store import VectorStore, _blob_to_vector
 from app.schemas import VectorItem, VectorSearchResult
+from tests.conftest import auth_header, S3_TEST_BUCKET
 
 
 # ── Helpers ───────────────────────────────────────────────────────────
 
 _BLOB = b"encrypted-payload-opaque-to-server"
 _CHECKSUM = hashlib.sha256(_BLOB).hexdigest()
-_BUCKET = "test-bucket"
+_BUCKET = S3_TEST_BUCKET
 _REGION = "us-east-1"
 
 
-@pytest.fixture
-def s3_bucket():
-    """Create a mocked S3 bucket and expose its name."""
-    with mock_aws():
-        os.environ.setdefault("AWS_ACCESS_KEY_ID", "testing")
-        os.environ.setdefault("AWS_SECRET_ACCESS_KEY", "testing")
-        os.environ.setdefault("AWS_DEFAULT_REGION", _REGION)
-        client = boto3.client("s3", region_name=_REGION)
-        client.create_bucket(Bucket=_BUCKET)
-        with patch("app.storage.blob_store.settings") as mock_settings:
-            mock_settings.S3_BUCKET = _BUCKET
-            mock_settings.S3_REGION = _REGION
-            mock_settings.AWS_ACCESS_KEY_ID = "testing"
-            mock_settings.AWS_SECRET_ACCESS_KEY = "testing"
-            yield _BUCKET
-
-
 def _pinecone_mock():
     """Return a mock Pinecone index with realistic return shapes."""
     mock_index = MagicMock()
@@ -383,3 +365,198 @@ class TestVectorStoreQdrant:
             await store.delete("u1", ["v1"])
         call_kwargs = mock_client.delete.call_args[1]
         assert call_kwargs["collection_name"] == "adiuva_vectors"
+
+
+# ── TestStorageRoutes (integration) ───────────────────────────────────
+
+
+class TestStorageRoutes:
+    """Integration tests for POST/GET/PUT/DELETE /api/v1/storage/records.
+
+    Pydantic v2 converts JSON string → bytes via ``str.encode('utf-8')``.
+    So "hello" in JSON becomes ``b"hello"`` on the server.  We use plain
+    ASCII strings as blob values and compute checksums accordingly.
+    """
+
+    _BLOB_STR = "encrypted-payload-opaque-to-server"
+    _BLOB_BYTES = _BLOB_STR.encode()
+    _BLOB_CHECKSUM = hashlib.sha256(_BLOB_BYTES).hexdigest()
+
+    @classmethod
+    def _create_payload(cls, blob_str: str | None = None) -> dict:
+        blob_str = blob_str or cls._BLOB_STR
+        checksum = hashlib.sha256(blob_str.encode()).hexdigest()
+        return {
+            "table": "tasks",
+            "blob": blob_str,
+            "checksum": checksum,
+        }
+
+    def _create_record(self, client, tier="power", blob_str=None):
+        payload = self._create_payload(blob_str)
+        return client.post(
+            "/api/v1/storage/records",
+            json=payload,
+            headers=auth_header(tier),
+        )
+
+    # ── Create ────────────────────────────────────────────────────────
+
+    def test_create_record(self, client, s3_bucket) -> None:
+        resp = self._create_record(client)
+        assert resp.status_code == 201
+        data = resp.json()
+        assert "id" in data
+        assert "created_at" in data
+
+    def test_create_record_bad_checksum(self, client, s3_bucket) -> None:
+        payload = {
+            "table": "tasks",
+            "blob": self._BLOB_STR,
+            "checksum": "0" * 64,
+        }
+        resp = client.post(
+            "/api/v1/storage/records",
+            json=payload,
+            headers=auth_header("power"),
+        )
+        assert resp.status_code == 400
+
+    def test_create_record_free_tier_blocked(self, client, s3_bucket) -> None:
+        """Free tier has cloud_storage_gb=0 → 402."""
+        resp = self._create_record(client, tier="free")
+        assert resp.status_code == 402
+
+    def test_create_record_pro_tier_allowed(self, client, s3_bucket) -> None:
+        """Pro tier has cloud_storage_gb=5 → succeeds for small blob."""
+        resp = self._create_record(client, tier="pro")
+        assert resp.status_code == 201
+
+    # ── List ──────────────────────────────────────────────────────────
+
+    def test_list_records(self, client, s3_bucket) -> None:
+        self._create_record(client)
+        self._create_record(client, blob_str="second-blob")
+        resp = client.get(
+            "/api/v1/storage/records",
+            headers=auth_header("power"),
+        )
+        assert resp.status_code == 200
+        data = resp.json()
+        assert len(data) == 2
+        # Each entry has metadata, no blob bytes
+        for item in data:
+            assert "id" in item
+            assert "table" in item
+            assert "checksum" in item
+            assert "blob" not in item
+
+    def test_list_records_filter_by_table(self, client, s3_bucket) -> None:
+        self._create_record(client)
+        # Create in a different table
+        note_blob = "note-blob"
+        payload = {
+            "table": "notes",
+            "blob": note_blob,
+            "checksum": hashlib.sha256(note_blob.encode()).hexdigest(),
+        }
+        client.post(
+            "/api/v1/storage/records",
+            json=payload,
+            headers=auth_header("power"),
+        )
+        resp = client.get(
+            "/api/v1/storage/records?table=notes",
+            headers=auth_header("power"),
+        )
+        assert resp.status_code == 200
+        data = resp.json()
+        assert len(data) == 1
+        assert data[0]["table"] == "notes"
+
+    def test_list_records_isolated_per_user(self, client, s3_bucket) -> None:
+        """One user's records should not appear in another user's list."""
+        self._create_record(client, tier="power")
+        resp = client.get(
+            "/api/v1/storage/records",
+            headers=auth_header("team"),
+        )
+        assert resp.json() == []
+
+    # ── Download ──────────────────────────────────────────────────────
+
+    def test_download_record(self, client, s3_bucket) -> None:
+        create_resp = self._create_record(client)
+        record_id = create_resp.json()["id"]
+        resp = client.get(
+            f"/api/v1/storage/records/{record_id}",
+            headers=auth_header("power"),
+        )
+        assert resp.status_code == 200
+        assert resp.content == self._BLOB_BYTES
+        assert resp.headers["X-Checksum"] == self._BLOB_CHECKSUM
+
+    def test_download_record_not_found(self, client, s3_bucket) -> None:
+        resp = client.get(
+            "/api/v1/storage/records/nonexistent-id",
+            headers=auth_header("power"),
+        )
+        assert resp.status_code == 404
+
+    # ── Update ────────────────────────────────────────────────────────
+
+    def test_update_record(self, client, s3_bucket) -> None:
+        create_resp = self._create_record(client)
+        record_id = create_resp.json()["id"]
+        new_blob_str = "updated-encrypted-payload"
+        new_checksum = hashlib.sha256(new_blob_str.encode()).hexdigest()
+        resp = client.put(
+            f"/api/v1/storage/records/{record_id}",
+            json={"blob": new_blob_str, "checksum": new_checksum},
+            headers=auth_header("power"),
+        )
+        assert resp.status_code == 200
+        assert resp.json() == {"ok": True}
+
+        # Verify download returns the updated blob
+        dl = client.get(
+            f"/api/v1/storage/records/{record_id}",
+            headers=auth_header("power"),
+        )
+        assert dl.content == new_blob_str.encode()
+
+    def test_update_record_bad_checksum(self, client, s3_bucket) -> None:
+        create_resp = self._create_record(client)
+        record_id = create_resp.json()["id"]
+        resp = client.put(
+            f"/api/v1/storage/records/{record_id}",
+            json={"blob": "some-data", "checksum": "0" * 64},
+            headers=auth_header("power"),
+        )
+        assert resp.status_code == 400
+
+    # ── Delete ────────────────────────────────────────────────────────
+
+    def test_delete_record(self, client, s3_bucket) -> None:
+        create_resp = self._create_record(client)
+        record_id = create_resp.json()["id"]
+        resp = client.delete(
+            f"/api/v1/storage/records/{record_id}",
+            headers=auth_header("power"),
+        )
+        assert resp.status_code == 200
+        assert resp.json() == {"ok": True}
+
+        # Subsequent GET should return 404
+        dl = client.get(
+            f"/api/v1/storage/records/{record_id}",
+            headers=auth_header("power"),
+        )
+        assert dl.status_code == 404
+
+    def test_delete_record_not_found(self, client, s3_bucket) -> None:
+        resp = client.delete(
+            "/api/v1/storage/records/nonexistent",
+            headers=auth_header("power"),
+        )
+        assert resp.status_code == 404