fix(indexing): track total_files separately from total_functions

- Add tracked_total_files captured from progress callback via nonlocal
- Use total_files for repo_manager.update_file_count() and IndexingStats.files_processed
- Keep total_functions for functions_indexed and metrics.record_indexing()
- For incremental: use repo's existing file_count or re-analyze if missing

Author: DevanshuNEU

backend/routes/repos.py

@@ -254,16 +254,26 @@ async def _run_async_indexing(
                 last_commit
             )
             index_type = "incremental"
+            # For incremental, get file count from repo or analyze
+            total_files = repo.get("file_count", 0)
+            if not total_files:
+                analysis = repo_validator.analyze_repo(repo["local_path"])
+                total_files = analysis.file_count if analysis and analysis.success else 0
         else:
             logger.info("Async FULL indexing with progress", repo_id=repo_id)
 
+            # Track total_files from progress callback
+            tracked_total_files = 0
+            
             # Progress callback that publishes to Redis
             async def progress_callback(
                 files_processed: int,
                 functions_found: int,
                 total_files: int,
                 current_file: str = None
             ):
+                nonlocal tracked_total_files
+                tracked_total_files = total_files
                 if publisher:
                     publisher.publish_progress(
                         repo_id,
@@ -278,14 +288,15 @@ async def progress_callback(
                 repo["local_path"],
                 progress_callback
             )
+            total_files = tracked_total_files
             index_type = "full"
 
         # Update metadata
         git_repo = git.Repo(repo["local_path"])
         current_commit = git_repo.head.commit.hexsha
 
         repo_manager.update_status(repo_id, "indexed")
-        repo_manager.update_file_count(repo_id, total_functions)
+        repo_manager.update_file_count(repo_id, total_files)
         repo_manager.update_last_commit(repo_id, current_commit)
 
         duration = time.time() - start_time
@@ -297,7 +308,7 @@ async def progress_callback(
                 repo_id,
                 repo_id,
                 IndexingStats(
-                    files_processed=total_functions,
+                    files_processed=total_files,
                     functions_indexed=total_functions,
                     indexing_time_seconds=duration
                 )