관리자 기능과 태그 표시 설정 추가

db/migrations/001_initial_schema.sql

@@ -32,10 +32,21 @@ CREATE TABLE IF NOT EXISTS tags (
   name TEXT NOT NULL,
   slug TEXT NOT NULL UNIQUE,
   description TEXT NOT NULL DEFAULT '',
+  sort_order INTEGER NOT NULL DEFAULT 0,
+  color TEXT NOT NULL DEFAULT '#15171a',
   created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
   updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
 );
 
+ALTER TABLE tags
+  ADD COLUMN IF NOT EXISTS sort_order INTEGER NOT NULL DEFAULT 0;
+
+ALTER TABLE tags
+  ADD COLUMN IF NOT EXISTS color TEXT NOT NULL DEFAULT '#15171a';
+
+CREATE INDEX IF NOT EXISTS tags_sort_order_name_idx
+  ON tags (sort_order ASC, name ASC);
+
 CREATE TABLE IF NOT EXISTS post_tags (
   post_id UUID NOT NULL REFERENCES posts(id) ON DELETE CASCADE,
   tag_id UUID NOT NULL REFERENCES tags(id) ON DELETE CASCADE,