fix: shorten HF Space short_description to meet 60-char limit

Deploy v2 backend to Hugging Face Spaces.

Default report generation to standard RAG/LLM on e561e67 baseline with /health verification.

chore: add HF Spaces YAML frontmatter

chore: update .gitignore and README for improved clarity and functionality

- Introduced a new API endpoint for finding similar content in the tenant's workspace, allowing users to identify overlapping uploads and draft notes.

feat: FAISS-only vector store (remove Chroma)

feat: enhance document upload and processing capabilities with new personalisation features

feat: scaffold complete RAG system for RICS-style report generation