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

app/routers/projects.py

@@ -96,6 +96,36 @@ async def update_project(
     return ProjectResponse.model_validate(project)
 
 
+@router.patch("/{project_id}", response_model=ProjectResponse)
+async def patch_project(
+    request: Request,
+    project_id: str,
+    payload: ProjectUpdate,
+    db: AsyncSession = Depends(get_db),
+):
+    """Partial update of project name and/or description."""
+    agent = await get_current_agent(request, db)
+    result = await db.execute(
+        select(Project).where(
+            Project.id == project_id,
+            Project.agent_id == agent.id,
+            Project.is_deleted == False,
+        )
+    )
+    project = result.scalar_one_or_none()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    if payload.name is not None:
+        project.name = payload.name
+    if payload.description is not None:
+        project.description = payload.description
+    project.updated_at = datetime.utcnow()
+
+    await db.flush()
+    return ProjectResponse.model_validate(project)
+
+
 @router.delete("/{project_id}", status_code=204)
 async def delete_project(
     request: Request,