feat(trash): MCP delete tools soft-delete via trash; add delete_task/project/milestone

src/fabledassistant/mcp/tools/projects.py

@@ -20,6 +20,7 @@ from fabledassistant.mcp._context import current_user_id
 from fabledassistant.services import milestones as milestones_svc
 from fabledassistant.services import projects as projects_svc
 from fabledassistant.services import rulebooks as rulebooks_svc
+from fabledassistant.services import trash as trash_svc
 
 
 async def list_projects() -> dict:
@@ -121,11 +122,23 @@ async def update_project(
     return project.to_dict()
 
 
+async def delete_project(project_id: int) -> dict:
+    """Move a project to the trash (recoverable). Its milestones, tasks, and notes
+    go with it as one batch. Restore via restore(batch_id)."""
+    uid = current_user_id()
+    batch = await trash_svc.delete(uid, "project", project_id)
+    if batch is None:
+        raise ValueError(f"project {project_id} not found")
+    return {"deleted_batch_id": batch,
+            "message": f"Project {project_id} + its contents moved to trash. Restore with restore('{batch}')."}
+
+
 def register(mcp) -> None:
     for fn in (
         list_projects,
         get_project,
         create_project,
         update_project,
+        delete_project,
     ):
         mcp.tool(name=fn.__name__)(fn)