feat: add PATCH /projects/{id} for partial updates

- Added PATCH endpoint for projects (supports name and/or description)
- Added test_patch_project test case
- Verify folder_id already supported in POST /api/v1/projects/{project_id}/documents

tests/test_projects.py

@@ -62,6 +62,40 @@ async def test_update_project(client):
     assert response.json()["name"] == "Updated"
 
 
+@pytest.mark.asyncio
+async def test_patch_project(client):
+    """Test PATCH endpoint for partial project update."""
+    token = await get_token(client)
+    create_resp = await client.post(
+        "/api/v1/projects",
+        json={"name": "Original", "description": "Original desc"},
+        headers={"Authorization": f"Bearer {token}"}
+    )
+    proj_id = create_resp.json()["id"]
+
+    # PATCH name only
+    response = await client.patch(
+        f"/api/v1/projects/{proj_id}",
+        json={"name": "Patched Name"},
+        headers={"Authorization": f"Bearer {token}"}
+    )
+    assert response.status_code == 200
+    data = response.json()
+    assert data["name"] == "Patched Name"
+    assert data["description"] == "Original desc"
+
+    # PATCH description only
+    response = await client.patch(
+        f"/api/v1/projects/{proj_id}",
+        json={"description": "Patched desc"},
+        headers={"Authorization": f"Bearer {token}"}
+    )
+    assert response.status_code == 200
+    data = response.json()
+    assert data["name"] == "Patched Name"
+    assert data["description"] == "Patched desc"
+
+
 @pytest.mark.asyncio
 async def test_soft_delete_project(client):
     token = await get_token(client)