refactor(sdm): Global pass with refined 'External Only' SDM tags. Pruned redundant internal references and fixed indentation logic in injector. Verified full project compilation.

src/thinking_parser.py

@@ -4,9 +4,11 @@ from src.models import ThinkingSegment
 
 def parse_thinking_trace(text: str) -> Tuple[List[ThinkingSegment], str]:
  """
- Parses thinking segments from text and returns (segments, response_content).
- Support extraction of thinking traces from <thinking>...</thinking>, <thought>...</thought>,
- and blocks prefixed with Thinking:.
+ 
+  Parses thinking segments from text and returns (segments, response_content).
+  Support extraction of thinking traces from <thinking>...</thinking>, <thought>...</thought>,
+  and blocks prefixed with Thinking:.
+  [C: tests/test_thinking_trace.py:test_parse_empty_response, tests/test_thinking_trace.py:test_parse_multiple_markers, tests/test_thinking_trace.py:test_parse_no_thinking, tests/test_thinking_trace.py:test_parse_text_thinking_prefix, tests/test_thinking_trace.py:test_parse_thinking_with_empty_response, tests/test_thinking_trace.py:test_parse_xml_thinking_tag, tests/test_thinking_trace.py:test_parse_xml_thought_tag]
  """
  segments = []
  
@@ -50,4 +52,4 @@ def parse_thinking_trace(text: str) -> Tuple[List[ThinkingSegment], str]:
  colon_segments, final_remaining = extract_colon_blocks(remaining)
  segments.extend(colon_segments)
  
- return segments, final_remaining.strip()
+ return segments, final_remaining.strip()