feat: implement wiki and submission management services with corresponding database schema and API endpoints

db/migrations/000016_wiki_content.up.sql

@@ -3,6 +3,7 @@ CREATE TABLE IF NOT EXISTS wiki_content (
     wiki_id UUID NOT NULL REFERENCES wikis(id) ON DELETE CASCADE,
     title TEXT NOT NULL,
     content TEXT,
+    preview TEXT,
     is_deleted BOOLEAN NOT NULL DEFAULT false,
     created_at TIMESTAMPTZ DEFAULT now()
 );

db/query/wiki.sql

@@ -95,9 +95,9 @@ SELECT * FROM wikis WHERE slug = ANY($1::text[]) AND is_deleted = false;
 
 -- name: CreateWikiContent :one
 INSERT INTO wiki_content (
-    id, wiki_id, title, content
+    id, wiki_id, title, content, preview
 ) VALUES (
-    COALESCE(sqlc.narg('id')::uuid, uuidv7()), $1, $2, $3
+    COALESCE(sqlc.narg('id')::uuid, uuidv7()), $1, $2, $3, $4
 )
 RETURNING *;
 

db/schema.sql

@@ -112,6 +112,7 @@ CREATE TABLE IF NOT EXISTS wiki_content (
     wiki_id UUID NOT NULL REFERENCES wikis(id) ON DELETE CASCADE,
     title TEXT NOT NULL,
     content TEXT,
+    preview TEXT,
     is_deleted BOOLEAN NOT NULL DEFAULT false,
     created_at TIMESTAMPTZ DEFAULT now()
 );