refactor: simplify dodo core experience

tests/test_app.py

@@ -155,13 +155,12 @@ def test_folder_and_list_lifecycle(client):
     assert client.delete(f"/api/v1/folders/{folder['id']}").status_code == 204
 
 
-def test_task_search_tags_subtasks_and_recycle_bin(client):
+def test_task_search_subtasks_and_recycle_bin(client):
     client = initialized_client(client)
     inbox = client.get("/api/v1/lists").json()[0]
-    tag = client.post("/api/v1/tags", json={"name": "重要", "color": "#f15a29"}).json()
     parent = client.post(
         "/api/v1/tasks",
-        json={"title": "购买咖啡豆", "description": "手冲用", "list_id": inbox["id"], "tag_ids": [tag["id"]]},
+        json={"title": "购买咖啡豆", "description": "手冲用", "list_id": inbox["id"]},
     ).json()
     child = client.post(
         "/api/v1/tasks",
@@ -170,11 +169,11 @@ def test_task_search_tags_subtasks_and_recycle_bin(client):
     assert child.status_code == 201
     detail = client.get(f"/api/v1/tasks/{parent['id']}")
     assert detail.status_code == 200
-    assert detail.json()["tags"][0]["name"] == "重要"
+    assert "tags" not in detail.json()
     assert len(detail.json()["subtasks"]) == 1
     listed = client.get("/api/v1/tasks", params={"q": "咖啡"}).json()["items"]
     assert len(listed) == 1
-    assert listed[0]["tags"][0]["name"] == "重要"
+    assert "tags" not in listed[0]
     assert listed[0]["subtasks"][0]["title"] == "比较价格"
 
     assert client.delete(f"/api/v1/tasks/{parent['id']}").status_code == 204
@@ -264,33 +263,13 @@ def test_nested_subtasks_are_rejected(client):
     assert nested.status_code == 400
 
 
-def test_tags_are_global_searchable_and_validated(client):
+
+def test_restore_replace_recovers_habits_and_task_links_without_tags(client):
     client = initialized_client(client)
     inbox = client.get("/api/v1/lists").json()[0]
-    errands = client.post("/api/v1/lists", json={"name": "跑腿清单"}).json()
-    tag = client.post("/api/v1/tags", json={"name": "蓝色标签", "color": "#123abc"})
-    assert tag.status_code == 201
-    assert client.get("/api/v1/tags").json()[0]["color"] == "#123abc"
-    task = client.post(
-        "/api/v1/tasks",
-        json={"title": "普通标题", "description": "特殊说明", "list_id": errands["id"], "tag_ids": [tag.json()["id"]]},
-    ).json()
-    for query in ("普通", "特殊", "蓝色", "跑腿"):
-        assert [row["id"] for row in client.get("/api/v1/tasks", params={"q": query}).json()["items"]] == [task["id"]]
-    invalid = client.post(
-        "/api/v1/tasks",
-        json={"title": "非法标签", "list_id": inbox["id"], "tag_ids": ["00000000-0000-0000-0000-000000000001"]},
-    )
-    assert invalid.status_code == 404
-
-
-def test_restore_replace_recovers_tags_habits_and_task_links(client):
-    client = initialized_client(client)
-    inbox = client.get("/api/v1/lists").json()[0]
-    tag = client.post("/api/v1/tags", json={"name": "备份标签", "color": "#f15a29"}).json()
     client.post(
         "/api/v1/tasks",
-        json={"title": "备份任务", "list_id": inbox["id"], "tag_ids": [tag["id"]]},
+        json={"title": "备份任务", "list_id": inbox["id"]},
     ).json()
     client.post(
         "/api/v1/habits",
@@ -298,8 +277,9 @@ def test_restore_replace_recovers_tags_habits_and_task_links(client):
     ).json()
     exported = client.get("/api/v1/export")
     assert exported.status_code == 200
+    assert "tags" not in exported.json()
+    assert "task_tags" not in exported.json()
 
-    client.post("/api/v1/tags", json={"name": "现有标签", "color": "#123abc"})
     client.post(
         "/api/v1/habits",
         json={"name": "深蹲", "kind": "boolean", "schedule_type": "daily"},
@@ -307,12 +287,11 @@ def test_restore_replace_recovers_tags_habits_and_task_links(client):
     restored = client.post("/api/v1/restore?mode=replace", json=exported.json())
     assert restored.status_code == 200
 
-    tags = client.get("/api/v1/tags").json()
-    assert [row["name"] for row in tags] == ["备份标签"]
+    assert client.get("/api/v1/tags").status_code == 404
     habits = client.get("/api/v1/habits").json()
     assert [row["name"] for row in habits] == ["俯卧撑"]
     listed = client.get("/api/v1/tasks", params={"q": "备份任务"}).json()["items"]
-    assert listed[0]["tags"][0]["name"] == "备份标签"
+    assert "tags" not in listed[0]
 
 
 def test_recycle_bin_restore_and_permanent_delete_include_subtasks(client):
@@ -333,10 +312,9 @@ def test_recycle_bin_restore_and_permanent_delete_include_subtasks(client):
     assert client.post(f"/api/v1/tasks/{parent['id']}/restore").status_code == 404
 
 
-def test_batch_supports_due_date_tags_and_soft_delete_atomically(client):
+def test_batch_supports_due_date_and_soft_delete_atomically(client):
     client = initialized_client(client)
     inbox = client.get("/api/v1/lists").json()[0]
-    tag = client.post("/api/v1/tags", json={"name": "批量", "color": "red"}).json()
     ids = [
         client.post("/api/v1/tasks", json={"title": str(i), "list_id": inbox["id"]}).json()["id"]
         for i in range(2)
@@ -344,10 +322,10 @@ def test_batch_supports_due_date_tags_and_soft_delete_atomically(client):
     due_at = "2026-09-10T08:00:00+08:00"
     response = client.post(
         "/api/v1/tasks/batch",
-        json={"task_ids": ids, "due_at": due_at, "tag_ids": [tag["id"]]},
+        json={"task_ids": ids, "due_at": due_at},
     )
     assert response.status_code == 200 and response.json()["updated"] == 2
-    assert all(client.get(f"/api/v1/tasks/{task_id}").json()["tags"] for task_id in ids)
+    assert all(client.get(f"/api/v1/tasks/{task_id}").json()["due_at"] is not None for task_id in ids)
 
     parent = client.post("/api/v1/tasks", json={"title": "父", "list_id": inbox["id"]}).json()
     client.post(