Prompt gallery (#957)

- [x] show prompt instead of app in autocomplete
- [x] use proper array/list for db (tags)
- [x] don't do <dyad-prompt> - replace inline

drizzle/0011_light_zeigeist.sql

@@ -0,0 +1,8 @@
+CREATE TABLE `prompts` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`title` text NOT NULL,
+	`description` text,
+	`content` text NOT NULL,
+	`created_at` integer DEFAULT (unixepoch()) NOT NULL,
+	`updated_at` integer DEFAULT (unixepoch()) NOT NULL
+);