init codebase

api/resources/migrations/006-create-channels.up.sql

@@ -0,0 +1,10 @@
+CREATE TABLE IF NOT EXISTS channels (
+  id            uuid        PRIMARY KEY DEFAULT gen_random_uuid(),
+  community_id  uuid        REFERENCES communities (id) ON DELETE CASCADE,
+  category_id   uuid        REFERENCES channel_categories (id) ON DELETE SET NULL,
+  name          text        NOT NULL,
+  type          text        NOT NULL CHECK (type IN ('text', 'dm', 'group_dm')),
+  visibility    text        NOT NULL DEFAULT 'public' CHECK (visibility IN ('public', 'private')),
+  topic         text,
+  created_at    timestamptz DEFAULT now()
+);