fix detect_microservice_from_path for cwd at microservice root

microservice_for_path walks _bounded_parents which excludes the path
itself. When cwd is exactly the microservice root directory (the most
common case), it was never checked for a build marker and auto-scope
returned None. Pass a synthetic child path so cwd appears in the
parent walk.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: HumanBean17

graph_enrich.py

@@ -1589,8 +1589,11 @@ def detect_microservice_from_path(cwd: Path, source_root: Path) -> str | None:
     if overrides and cwd_resolved.name in overrides:
         return cwd_resolved.name
 
-    # Call existing microservice_for_path to detect microservice from build markers
-    ms = microservice_for_path(str(cwd_resolved), source_resolved)
+    # microservice_for_path walks _bounded_parents which excludes the path itself.
+    # For query-time detection we need cwd included in the walk, so pass a synthetic
+    # child path so that cwd appears as a parent in the build-marker scan.
+    synthetic = cwd_resolved / "__scope_probe__"
+    ms = microservice_for_path(str(synthetic), source_resolved)
     return ms if ms else None