diff --git a/.gitea/workflows/ci-cd.yml b/.gitea/workflows/ci-cd.yml
index da7b66197..c654bbe5b 100755
--- a/.gitea/workflows/ci-cd.yml
+++ b/.gitea/workflows/ci-cd.yml
@@ -194,7 +194,6 @@ jobs:
         run: |
           set -eu
           docker run --rm \
-            --pull=never \
             -v "$PWD:/workspace" \
             -w /workspace/apps/web \
             docker.m.daocloud.io/library/node:20 \
@@ -205,7 +204,6 @@ jobs:
         run: |
           set -eu
           docker run --rm \
-            --pull=never \
             -v "$PWD:/workspace" \
             -w /workspace/apps/web \
             docker.m.daocloud.io/library/node:20 \
@@ -216,7 +214,6 @@ jobs:
         run: |
           set -eu
           docker run --rm \
-            --pull=never \
             -v "$PWD:/workspace" \
             -w /workspace/apps/web \
             docker.m.daocloud.io/library/node:20 \
@@ -227,7 +224,6 @@ jobs:
         run: |
           set -eu
           docker run --rm \
-            --pull=never \
             -v "$PWD:/workspace" \
             -w /workspace/apps/web \
             docker.m.daocloud.io/library/node:20 \
@@ -238,7 +234,6 @@ jobs:
         run: |
           set -eu
           docker run --rm \
-            --pull=never \
             -v "$PWD:/workspace" \
             -w /workspace/apps/web \
             docker.m.daocloud.io/library/node:20 \
diff --git a/.gitea/workflows/deploy.yml b/.gitea/workflows/deploy.yml
index 593aea546..dcab67e19 100755
--- a/.gitea/workflows/deploy.yml
+++ b/.gitea/workflows/deploy.yml
@@ -75,7 +75,6 @@ jobs:
       run: |
         set -eu
         docker run --rm \
-          --pull=never \
           -v "$PWD:/workspace" \
           -w /workspace/apps/web \
           docker.m.daocloud.io/library/node:20 \
@@ -394,7 +393,6 @@ jobs:
       run: |
         set -eu
         docker run --rm \
-          --pull=never \
           -v "$PWD:/workspace" \
           -w /workspace/apps/web \
           docker.m.daocloud.io/library/node:20 \
diff --git a/apps/api/app/api/routes/duplication.py b/apps/api/app/api/routes/duplication.py
index e98c26db8..427d369fa 100644
--- a/apps/api/app/api/routes/duplication.py
+++ b/apps/api/app/api/routes/duplication.py
@@ -239,7 +239,7 @@ def get_duplication_detail(
     return _to_detail_response(record)
 
 
-@router.delete("/records/{record_id}", status_code=status.HTTP_204_NO_CONTENT)
+@router.delete("/records/{record_id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
 def delete_duplication_record(
     record_id: str,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),
diff --git a/apps/api/app/api/routes/edit_plans.py b/apps/api/app/api/routes/edit_plans.py
index 315446450..144a48421 100644
--- a/apps/api/app/api/routes/edit_plans.py
+++ b/apps/api/app/api/routes/edit_plans.py
@@ -279,7 +279,7 @@ def update_plan(
     return _to_response(result)
 
 
-@router.delete("/{plan_id}", status_code=status.HTTP_204_NO_CONTENT)
+@router.delete("/{plan_id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
 def delete_plan(
     plan_id: str,
     db: Session = Depends(get_db_session),
diff --git a/apps/api/app/api/routes/edit_templates.py b/apps/api/app/api/routes/edit_templates.py
index 5e91e1aad..2faf3c6be 100644
--- a/apps/api/app/api/routes/edit_templates.py
+++ b/apps/api/app/api/routes/edit_templates.py
@@ -241,7 +241,7 @@ def update_template(
     return _to_response(result)
 
 
-@router.delete("/{template_id}", status_code=status.HTTP_204_NO_CONTENT)
+@router.delete("/{template_id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
 def delete_template(
     template_id: str,
     db: Session = Depends(get_db_session),
diff --git a/apps/api/app/api/routes/recipes.py b/apps/api/app/api/routes/recipes.py
index b79bfa1bf..fa48c3494 100644
--- a/apps/api/app/api/routes/recipes.py
+++ b/apps/api/app/api/routes/recipes.py
@@ -172,7 +172,7 @@ def update_recipe(
     return _to_response(recipe)
 
 
-@router.delete("/{recipe_id}", status_code=status.HTTP_204_NO_CONTENT)
+@router.delete("/{recipe_id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
 def delete_recipe(
     recipe_id: str,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),
diff --git a/apps/api/app/api/routes/templates.py b/apps/api/app/api/routes/templates.py
index c6d498053..58a85c023 100644
--- a/apps/api/app/api/routes/templates.py
+++ b/apps/api/app/api/routes/templates.py
@@ -193,7 +193,7 @@ def update_template(
     return _to_response(template)
 
 
-@router.delete("/{template_id}", status_code=status.HTTP_204_NO_CONTENT)
+@router.delete("/{template_id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
 def delete_template(
     template_id: str,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),
@@ -271,7 +271,7 @@ def create_category(
     )
 
 
-@router.delete("/categories/{category_id}", status_code=status.HTTP_204_NO_CONTENT)
+@router.delete("/categories/{category_id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
 def delete_category(
     category_id: str,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),
diff --git a/apps/api/app/api/routes/titles.py b/apps/api/app/api/routes/titles.py
index 1aed51d5c..f1b8980cf 100644
--- a/apps/api/app/api/routes/titles.py
+++ b/apps/api/app/api/routes/titles.py
@@ -143,7 +143,7 @@ def update_title(
     return _to_response(item)
 
 
-@router.delete("/{title_id}", status_code=status.HTTP_204_NO_CONTENT)
+@router.delete("/{title_id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
 def delete_title(
     title_id: str,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),
diff --git a/apps/api/app/api/routes/tts.py b/apps/api/app/api/routes/tts.py
index 87bfff7f9..82bd42927 100644
--- a/apps/api/app/api/routes/tts.py
+++ b/apps/api/app/api/routes/tts.py
@@ -174,7 +174,7 @@ def get_tts_job_status(
     )
 
 
-@router.delete("/jobs/{job_id}", status_code=status.HTTP_204_NO_CONTENT)
+@router.delete("/jobs/{job_id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
 def delete_tts_job(
     job_id: str,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),
diff --git a/apps/api/app/api/routes/voice_clones.py b/apps/api/app/api/routes/voice_clones.py
index 011faaf5f..a03a7cc18 100644
--- a/apps/api/app/api/routes/voice_clones.py
+++ b/apps/api/app/api/routes/voice_clones.py
@@ -170,7 +170,7 @@ def get_voice_clone_status(
 
 @router.delete(
     "/{clone_id}",
-    status_code=status.HTTP_204_NO_CONTENT,
+    status_code=status.HTTP_204_NO_CONTENT, response_model=None,
 )
 def delete_voice_clone(
     clone_id: str,
diff --git a/apps/api/app/api/routes/voices.py b/apps/api/app/api/routes/voices.py
index 73d41090f..6e90aeda2 100644
--- a/apps/api/app/api/routes/voices.py
+++ b/apps/api/app/api/routes/voices.py
@@ -316,7 +316,7 @@ def update_voice(
     return _to_response(item)
 
 
-@router.delete("/{voice_id}", status_code=status.HTTP_204_NO_CONTENT)
+@router.delete("/{voice_id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
 def delete_voice(
     voice_id: str,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),
diff --git a/tests/unit/test_dedup_engine.py b/tests/unit/test_dedup_engine.py
index f1d4433af..2a92f7540 100644
--- a/tests/unit/test_dedup_engine.py
+++ b/tests/unit/test_dedup_engine.py
@@ -164,8 +164,11 @@ class TestComputePhash:
         assert hash1 == hash2
 
     def test_different_images_different_hash(self):
-        img1 = np.zeros((64, 64, 3), dtype=np.uint8)
-        img2 = np.full((64, 64, 3), 255, dtype=np.uint8)
+        # 用两张不同的随机噪声图测试（纯色图 pHash 会相同，因为排除了 DC 分量）
+        rng = np.random.RandomState(42)
+        img1 = rng.randint(0, 256, (64, 64, 3), dtype=np.uint8)
+        rng2 = np.random.RandomState(99)
+        img2 = rng2.randint(0, 256, (64, 64, 3), dtype=np.uint8)
         hash1 = compute_phash(img1)
         hash2 = compute_phash(img2)
         assert hash1 != hash2