diff --git a/.github/workflows/pr-reviewer.yml b/.github/workflows/pr-reviewer.yml
index a503d3422..5699e74c8 100644
--- a/.github/workflows/pr-reviewer.yml
+++ b/.github/workflows/pr-reviewer.yml
@@ -1,6 +1,8 @@
 name: VLLM-Omni PR Reviewer
 
 on:
+  pull_request:
+    types: [opened, ready_for_review]
   issue_comment:
     types: [created]
 
@@ -14,14 +16,17 @@ jobs:
     name: Review Pull Request
     runs-on: ubuntu-latest
     timeout-minutes: 10
-    # Only run when the comment is from a collaborator/owner/member
+    # Trigger on:
+    # 1. PR opened or marked ready for review (auto-run, only from same repo)
+    # 2. Manual @vllm-omni-reviewer comment by members/collaborators
     if: |
-      github.event_name == 'issue_comment' &&
-      github.event.issue.pull_request != null &&
-      contains(github.event.comment.body, '@vllm-omni-reviewer') &&
-      (github.event.comment.author_association == 'MEMBER' ||
-       github.event.comment.author_association == 'COLLABORATOR' ||
-       github.event.comment.author_association == 'OWNER')
+      (github.event_name == 'pull_request' && github.event.pull_request.draft == false && github.event.pull_request.head.repo.full_name == github.repository) ||
+      (github.event_name == 'issue_comment' &&
+       github.event.issue.pull_request != null &&
+       contains(github.event.comment.body, '@vllm-omni-reviewer') &&
+       (github.event.comment.author_association == 'MEMBER' ||
+        github.event.comment.author_association == 'COLLABORATOR' ||
+        github.event.comment.author_association == 'OWNER'))
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4.2.2
diff --git a/vllm_omni/benchmarks/metrics/metrics.py b/vllm_omni/benchmarks/metrics/metrics.py
index 83671b713..3258a4ad5 100644
--- a/vllm_omni/benchmarks/metrics/metrics.py
+++ b/vllm_omni/benchmarks/metrics/metrics.py
@@ -223,8 +223,8 @@ def calculate_metrics(
                 good_completed += 1
 
     if completed == 0:
-        warnings.formatwarning = (
-            lambda msg, category, filename, lineno, line=None: f"{filename}:{lineno}: {category.__name__}: {msg}\n"
+        warnings.formatwarning = lambda msg, category, filename, lineno, line=None: (
+            f"{filename}:{lineno}: {category.__name__}: {msg}\n"
         )
         warnings.warn(
             "All requests failed. This is likely due to a misconfiguration on the benchmark arguments.",
diff --git a/vllm_omni/diffusion/envs.py b/vllm_omni/diffusion/envs.py
index dd566b059..a71dc2e8e 100644
--- a/vllm_omni/diffusion/envs.py
+++ b/vllm_omni/diffusion/envs.py
@@ -20,7 +20,7 @@ environment_variables: dict[str, Callable[[], Any]] = {
     # used in distributed environment to determine the master address
     "MASTER_ADDR": lambda: os.getenv("MASTER_ADDR", ""),
     # used in distributed environment to manually set the communication port
-    "MASTER_PORT": lambda: (int(os.getenv("MASTER_PORT", "0")) if "MASTER_PORT" in os.environ else None),
+    "MASTER_PORT": lambda: int(os.getenv("MASTER_PORT", "0")) if "MASTER_PORT" in os.environ else None,
     # path to cudatoolkit home directory, under which should be bin, include,
     # and lib directories.
     "CUDA_HOME": lambda: os.environ.get("CUDA_HOME", None),