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.

tests/test_config.py

@@ -180,6 +180,48 @@ categories:
         assert config.categories["movie"] == ["movie", "movies", "films"]
         assert config.categories["series"] == ["series", "tv", "shows"]
 
+    def test_load_config_with_tmdb_settings(self, tmp_path):
+        """Test loading TMDB auth and query preferences from config."""
+        config_file = tmp_path / "config.yaml"
+        config_file.write_text("""
+library_root: /test/library
+enrichment:
+  api_keys:
+    tmdb_bearer: bearer-token
+  tmdb:
+    language: zh-TW
+    region: TW
+    include_adult: false
+""")
+
+        config = load_config(config_file)
+
+        assert config.tmdb_bearer_token == "bearer-token"
+        assert config.tmdb_language == "zh-TW"
+        assert config.tmdb_region == "TW"
+        assert config.tmdb_include_adult is False
+
+    def test_load_config_with_enrich_alias(self, tmp_path):
+        """Test loading enrichment settings from `enrich` alias."""
+        config_file = tmp_path / "config.yaml"
+        config_file.write_text("""
+library_root: /test/library
+enrich:
+  enabled: false
+  providers: [tmdb]
+  api_keys:
+    tmdb_bearer: alias-bearer-token
+  tmdb:
+    language: en-US
+""")
+
+        config = load_config(config_file)
+
+        assert config.enrichment_enabled is False
+        assert config.enrichment_providers == ["tmdb"]
+        assert config.tmdb_bearer_token == "alias-bearer-token"
+        assert config.tmdb_language == "en-US"
+
 
 class TestCreateDefaultConfig:
     """Test create_default_config function."""
@@ -211,6 +253,8 @@ class TestCreateDefaultConfig:
         assert 'templates' in data
         assert 'log_level' in data
         assert 'quarantine_dir' in data
+        assert 'enrichment' in data
+        assert 'enrich' in data
     
     def test_create_default_config_creates_parent_dirs(self, tmp_path):
         """Test that create_default_config creates parent directories."""