feat: more cleanup work in UI

src/main/database/connection.ts

@@ -149,7 +149,12 @@ export class DatabaseConnection {
         synced_at INTEGER,
         checksum TEXT,
         tags TEXT,
-        categories TEXT
+        categories TEXT,
+        published_title TEXT,
+        published_content TEXT,
+        published_tags TEXT,
+        published_categories TEXT,
+        published_excerpt TEXT
       );
 
       CREATE TABLE IF NOT EXISTS media (
@@ -242,6 +247,18 @@ export class DatabaseConnection {
       );
     }
 
+    // Migration: Add published snapshot columns for discard functionality
+    const publishedContentCol = await this.localClient.execute(
+      "SELECT name FROM pragma_table_info('posts') WHERE name = 'published_content'"
+    );
+    if (publishedContentCol.rows.length === 0) {
+      await this.localClient.execute("ALTER TABLE posts ADD COLUMN published_title TEXT");
+      await this.localClient.execute("ALTER TABLE posts ADD COLUMN published_content TEXT");
+      await this.localClient.execute("ALTER TABLE posts ADD COLUMN published_tags TEXT");
+      await this.localClient.execute("ALTER TABLE posts ADD COLUMN published_categories TEXT");
+      await this.localClient.execute("ALTER TABLE posts ADD COLUMN published_excerpt TEXT");
+    }
+
     // Create FTS5 virtual table for full-text search
     await this.localClient.execute(`
       CREATE VIRTUAL TABLE IF NOT EXISTS posts_fts USING fts5(

src/main/database/schema.ts

@@ -29,6 +29,12 @@ export const posts = sqliteTable('posts', {
   checksum: text('checksum'),
   tags: text('tags'), // JSON array stored as text
   categories: text('categories'), // JSON array stored as text
+  // Published snapshot - stores the last published version for discard functionality
+  publishedTitle: text('published_title'),
+  publishedContent: text('published_content'),
+  publishedTags: text('published_tags'), // JSON array stored as text
+  publishedCategories: text('published_categories'), // JSON array stored as text
+  publishedExcerpt: text('published_excerpt'),
 });
 
 // Media table - stores metadata for images and other media