Enhance project structure and add new files for enrichment and analysis

- Updated AGENTS.md to reflect changes in CLI commands and module organization, including the addition of an enrichment step and new functional modules.
- Introduced analysis.json, identities.json, inventory.csv, and plan.json to support enriched metadata and execution planning.
- Added CODE_IMPROVEMENTS.md to document identified code issues and proposed solutions for future enhancements.
- Updated README.md to include new enrichment features and configuration options.
- Removed unused dependency on ffmpeg-python from pyproject.toml.

These changes improve the overall functionality and maintainability of the Video Library Manager project.

src/vlm/quarantine.py

@@ -16,6 +16,7 @@ from pathlib import Path
 from typing import Optional
 
 from .config import Config
+from .utils import utc_now
 from .logging_config import get_logger, log_operation
 from .models import QuarantineEntry, QuarantineManifest, OperationResult, FileOperation
 
@@ -58,7 +59,7 @@ class QuarantineManager:
         Raises:
             ValueError: If file is in anime or other category (not supported in v1)
         """
-        executed_at = datetime.now()
+        executed_at = utc_now()
         
         # Verify file exists
         if not file_path.exists():
@@ -526,7 +527,7 @@ class QuarantineManager:
         Returns:
             OperationResult indicating success or failure
         """
-        executed_at = datetime.now()
+        executed_at = utc_now()
         
         # Verify quarantine file exists
         if not quarantine_path.exists():