feat(sdm): inject structural dependency mapping tags across codebase

Adds [C: caller] tags to functions/methods and [M: mutation] / [U: usage] tags to class variables based on cross-module call analysis.

tests/test_headless_verification.py

@@ -10,10 +10,11 @@ from src import ai_client
 async def test_headless_verification_full_run(vlogger) -> None:
  """
  
-     1. Initialize a ConductorEngine with a Track containing multiple dependent Tickets.
-     2. Simulate a full execution run using engine.run().
-     3. Mock ai_client.send to simulate successful tool calls and final responses.
-     4. Specifically verify that 'Context Amnesia' is maintained.
+  
+      1. Initialize a ConductorEngine with a Track containing multiple dependent Tickets.
+      2. Simulate a full execution run using engine.run().
+      3. Mock ai_client.send to simulate successful tool calls and final responses.
+      4. Specifically verify that 'Context Amnesia' is maintained.
  """
  t1 = Ticket(id="T1", description="Task 1", status="todo", assigned_to="worker1")
  t2 = Ticket(id="T2", description="Task 2", status="todo", assigned_to="worker1", depends_on=["T1"])
@@ -49,8 +50,9 @@ async def test_headless_verification_full_run(vlogger) -> None:
 async def test_headless_verification_error_and_qa_interceptor(vlogger) -> None:
  """
  
-     5. Simulate a shell error and verify that the Tier 4 QA interceptor is triggered 
-        and its summary is injected into the worker's history for the next retry.
+  
+      5. Simulate a shell error and verify that the Tier 4 QA interceptor is triggered 
+         and its summary is injected into the worker's history for the next retry.
  """
  t1 = Ticket(id="T1", description="Task with error", status="todo", assigned_to="worker1")
  track = Track(id="track_error", description="Error Track", tickets=[t1])