fix: Add type annotation to scan_summary in test_gen.py

Fixes mypy type error for mixed-type dictionary values.

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: 2 people

src/empathy_os/workflows/test_gen.py

@@ -494,7 +494,7 @@ async def _identify(self, input_data: dict, tier: ModelTier) -> tuple[dict, int,
         existing_test_files = 0
 
         # Track scan summary for debugging/visibility
-        scan_summary = {
+        scan_summary: dict[str, int | str | None] = {
             "files_scanned": 0,
             "files_too_large": 0,
             "files_read_error": 0,