fix: Add safe response handling and error alerts for text and voice queries in web UI

feat: Implement lazy module loading for zero-overhead server startup

feat: Optimize embedder runtime memory allocation

feat: Add dynamic Qdrant Cloud vector search integration with payload indexing and candidate fusion

feat: Populate Qdrant Cloud Cluster with multilingual Indic corpora across passage and longdoc strategies

feat: Add Qdrant Cloud API key authentication & cluster connection support

feat: Add Qdrant vector database engine adapter with dual FAISS/Qdrant backend support

feat: Add VisionQuest Indic RAG core services, vector search, safety guardrails & web UI