feat: panneau de facettes repliable + facette Extensions exposee par l'API #157

backend/schemas.py

@@ -646,6 +646,7 @@ class SearchFacets(BaseModel):
 
     tags: dict[str, int] = Field(default_factory=dict)
     vaults: dict[str, int] = Field(default_factory=dict)
+    extensions: dict[str, int] = Field(default_factory=dict, description="Counts per file extension, dotless and lowercase (query-ready for the ext: operator)")
 
 
 class AdvancedSearchResponse(BaseModel):
@@ -655,7 +656,7 @@ class AdvancedSearchResponse(BaseModel):
     total: int = Field(description="Total number of matching results")
     offset: int = Field(description="Current pagination offset")
     limit: int = Field(description="Page size")
-    facets: SearchFacets = Field(description="Faceted counts by tag and vault")
+    facets: SearchFacets = Field(description="Faceted counts by tag, vault and file extension")
     query_time_ms: float = Field(default=0, description="Server-side query time in milliseconds")
     semantic_available: bool = Field(default=False, description="True when the semantic (embedding) index is ready")