fix(build): strip \r\n from all .py files — CRLF breaks patch_ops.sh text matching

31 files had Windows line endings (\r\n) from merge commit. This causes
patch_ops.sh replace_once() to fail: anchor strings use \n but file
content has \r\n, so no match → patch fails → docker build fails.

Also added .gitattributes to force LF for all text files going forward.

qwen3_6_scripts/reasoning/__init__.py

@@ -1,16 +1,16 @@
-"""
+"""
 Reasoning parser module for vLLM 0.6.3 (BI-V100 / Qwen3.6-35B-A3B adaptation).
-
-Usage: --reasoning-parser qwen3
-"""
-
-from vllm.reasoning.abs_reasoning_parsers import ReasoningParser, ReasoningParserManager
-
-__all__ = ["ReasoningParser", "ReasoningParserManager"]
-
-# Lazy-register Qwen3 parser; imported on first get_reasoning_parser("qwen3").
-ReasoningParserManager.register_lazy(
-    "qwen3",
-    "vllm.reasoning.qwen3_reasoning_parser",
-    "Qwen3ReasoningParser",
-)
+
+Usage: --reasoning-parser qwen3
+"""
+
+from vllm.reasoning.abs_reasoning_parsers import ReasoningParser, ReasoningParserManager
+
+__all__ = ["ReasoningParser", "ReasoningParserManager"]
+
+# Lazy-register Qwen3 parser; imported on first get_reasoning_parser("qwen3").
+ReasoningParserManager.register_lazy(
+    "qwen3",
+    "vllm.reasoning.qwen3_reasoning_parser",
+    "Qwen3ReasoningParser",
+)