Harden realtor profile search rules and filters ...

- Add hard rule: only listings returned by MCP tools may be reported;
  no invented addresses, prices, contacts, or 'similar' examples.
- Replace weak fallback with mandatory multi-attempt fallback order
  (switch search type, drop filters, simplify query, widen location,
  minimal search) before reporting no results.
- Expand filter list to full MetadataFilters set with enum values.
- Add explicit mapping of vague user phrases to concrete filters
  (e.g. 'с ремонтом' -> renovation_status, 'у метро' -> metro_distance).
- Add forbidden query patterns and good/bad Ukrainian query examples.
- Sync MCP server instructions with same anti-hallucination and filter
  rules, including example queries.

Apply rent_bot user flow to realtor profile ...

- Expand realtor system prompt with full user-flow semantics:
  onboarding, parameter extraction, clarifying questions, semantic vs FTS
  search, carousel-style results, detail card, contact/favorite/more/passive
  search follow-up actions. Add image rendering instructions.
- Extend vmk_data MCP server instructions to mention listing image URLs.

Add vmk_data MCP server and realtor profile for real estate search ...

- mcp_servers.d/vmk_data.json: streamable_http to localhost:8080

- navi/profiles/realtor/: config + system_prompt + subagent_system_prompt

Profile includes semantic & FTS search, listing details, schema tools

Co-Authored-By: Claude <noreply@anthropic.com>