feat(web): conversation management — search, rename, delete, archive (#121) (#139)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

packages/db/src/schema.ts

@@ -199,12 +199,14 @@ export const conversations = pgTable(
       .notNull()
       .references(() => users.id, { onDelete: 'cascade' }),
     projectId: uuid('project_id').references(() => projects.id, { onDelete: 'set null' }),
+    archived: boolean('archived').notNull().default(false),
     createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
     updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
   },
   (t) => [
     index('conversations_user_id_idx').on(t.userId),
     index('conversations_project_id_idx').on(t.projectId),
+    index('conversations_archived_idx').on(t.archived),
   ],
 );