feat: Add MicroDAO Dashboard with activity feed and statistics

- Add microdao_activity table for news/updates/events
- Add statistics columns to microdaos table
- Implement dashboard API endpoints
- Create UI components (HeaderCard, ActivitySection, TeamSection)
- Add seed data for DAARION DAO
- Update backend models and repositories
- Add frontend types and API client

migrations/044_microdao_activity.sql

@@ -0,0 +1,22 @@
+-- 044_microdao_activity.sql
+-- Migration: Create microdao_activity table for news/updates/events feed
+
+CREATE TABLE IF NOT EXISTS microdao_activity (
+    id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    microdao_slug   TEXT NOT NULL REFERENCES microdaos(slug) ON DELETE CASCADE,
+    kind            TEXT NOT NULL CHECK (kind IN ('post', 'event', 'update')),
+    title           TEXT,
+    body            TEXT NOT NULL,
+    author_agent_id TEXT NULL,
+    author_name     TEXT NULL,
+    created_at      TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS idx_microdao_activity_microdao_created_at
+    ON microdao_activity (microdao_slug, created_at DESC);
+
+COMMENT ON TABLE microdao_activity IS 'Activity feed for MicroDAO: posts, events, updates';
+COMMENT ON COLUMN microdao_activity.kind IS 'Type: post (news), event (announcement), update (status change)';
+COMMENT ON COLUMN microdao_activity.author_agent_id IS 'Optional reference to agent who created this activity';
+COMMENT ON COLUMN microdao_activity.author_name IS 'Fallback author name if agent_id is not set';
+

migrations/045_microdao_stats.sql

@@ -0,0 +1,14 @@
+-- 045_microdao_stats.sql
+-- Migration: Add statistics columns to microdaos table
+
+ALTER TABLE microdaos
+    ADD COLUMN IF NOT EXISTS citizens_count INTEGER NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS rooms_count     INTEGER NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS agents_count    INTEGER NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS last_update_at  TIMESTAMPTZ;
+
+COMMENT ON COLUMN microdaos.citizens_count IS 'Cached count of citizens (public agents) linked to this MicroDAO';
+COMMENT ON COLUMN microdaos.rooms_count IS 'Cached count of rooms belonging to this MicroDAO';
+COMMENT ON COLUMN microdaos.agents_count IS 'Cached count of agents (all) linked to this MicroDAO';
+COMMENT ON COLUMN microdaos.last_update_at IS 'Last time statistics were updated';
+