fix: auto-select active document on load and ingestion finish so search is never disabled

feat: enterprise multi-page RAG platform with GraphRAG, CRAG, Guardrails, and VectorDB Inspector

feat: Add RAG Execution Transparency, Technique Compatibility Matrix, and RAGAS Quality Dashboard

my local frontend changes

Fix file upload UI refresh and add Metadata Filters UI

Initial commit: Multimodal RAG Pipeline V3.0 with Fallback Logic