Fixed

• MCP HTTP transport crash on startup: investors and kpis tools were registered twice — once in safe.ts (legacy) and again in the dedicated investors.ts / kpis.ts modules added in v0.8.4. Same issue for mindmaps tools registered in both canvas.ts (legacy) and mindmaps.ts. Removed the stale registrations from safe.ts and canvas.ts.
• MCP get_kpi tool was missing from kpis.ts (it only existed in the now-removed legacy copy in safe.ts); restored in kpis.ts.