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.

Fix vmk_data MCP server URL: add /mcp endpoint path ...

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

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>