[CI/Build] Add DSv4.1 auto-label rules and narrow DSv4 (#56332)

Signed-off-by: Joe Cotant <joe@inferact.ai>
Co-authored-by: Claude <noreply@anthropic.com>

.github/mergify.yml

@@ -330,12 +330,32 @@ pull_request_rules:
     - label != stale
     - or:
       - files~=^vllm/models/deepseek_v4/
-      - title~=(?i)(?:\bDSv4\b|deepseek[-\s]?v4)
+      # Trailing (?![._]?1) keeps V4.1 out: DeepseekV41ForCausalLM is a
+      # distinct architecture with its own tree and label (DSv4.1).
+      - title~=(?i)(?:\bDSv4\b|deepseek[-\s_]?v4)(?![._]?1)
   actions:
     label:
       add:
         - DSv4
 
+- name: label-dsv4-1
+  description: Automatically apply DSv4.1 label
+  conditions:
+    - label != stale
+    - or:
+      # The 4.1 sources spell the model three ways: deepseek_v4_1 (models),
+      # deepseek_v41 (most) and deepseekv41 (tool parsers).
+      - files~=^vllm/models/deepseek_v4_1/
+      - files~=^vllm/(?:parser|tokenizers|reasoning|transformers_utils/configs)/deepseek_v41.*\.py
+      - files~=^vllm/tool_parsers/deepseekv41.*\.py
+      - files~=^rust/src/(?:chat|parser)/src/.*deepseek_v41
+      - files~=^tests/.*deepseek_?v41
+      - title~=(?i)(?:\bDSv4[._]?1\b|deepseek[-\s_]?v4[._]?1)
+  actions:
+    label:
+      add:
+        - DSv4.1
+
 - name: label-nvidia
   description: Automatically apply nvidia label
   conditions:

.github/workflows/issue_autolabel.yml

@@ -197,9 +197,12 @@ jobs:
               deepseek: {
                 keywords: [{ term: "DeepSeek", searchIn: "title" }],
               },
+              // DSv4 and DSv4.1 are distinct architectures; these keep them exclusive.
               DSv4: {
-                keywords: [{ term: "DSv4", searchIn: "title" }],
-                substrings: [{ term: "deepseek-v4", searchIn: "title" }],
+                regexPatterns: [{ pattern: "(?:\\bDSv4\\b|deepseek[-\\s_]?v4)(?![._]?1)", flags: "gi", searchIn: "title" }],
+              },
+              "DSv4.1": {
+                regexPatterns: [{ pattern: "(?:\\bDSv4[._]?1\\b|deepseek[-\\s_]?v4[._]?1)", flags: "gi", searchIn: "title" }],
               },
               llama: {
                 keywords: [{ term: "Llama", searchIn: "title" }],