Remove Komodo backend in favor of native hosts

tests/unit/native-registry-migration.test.ts

@@ -0,0 +1,51 @@
+import Database from 'better-sqlite3';
+import { readFile } from 'node:fs/promises';
+import { afterEach, beforeEach, expect, it, vi } from 'vitest';
+import { newFixture, type Fixture } from '../helpers/fixture.js';
+
+let fixture: Fixture;
+beforeEach(async () => { vi.resetModules(); fixture = await newFixture([]); });
+afterEach(async () => { await fixture.cleanup(); });
+
+it('retires only obsolete backend columns while preserving instances, history, keys and foreign keys', async () => {
+    const schema = await readFile(new URL('../../src/lib/server/db/schema.sql', import.meta.url), 'utf8');
+    const previous = new Database(fixture.dbPath);
+    // Model the former required resource identity and an unrelated extension.
+    previous.exec(schema);
+    previous.exec(`ALTER TABLE servers ADD COLUMN komodo_type TEXT NOT NULL DEFAULT 'deployment';
+        ALTER TABLE servers ADD COLUMN komodo_name TEXT NOT NULL;
+        ALTER TABLE servers ADD COLUMN komodo_server TEXT;
+        ALTER TABLE servers ADD COLUMN operator_note TEXT;`);
+    previous.prepare(`INSERT INTO servers(name,komodo_name,komodo_server,game,game_port,operator_note)
+        VALUES('native-server','','old-host','t5',28960,'keep this')`).run();
+    previous.prepare("INSERT INTO server_keys(server_id,pluto_key) VALUES('native-server','saved-key')").run();
+    previous.prepare(`INSERT INTO server_deployments(id,server,action,state,stage,started_at,triggered_by)
+        VALUES('creation','native-server','create','done','Ready','2026-01-01','fixture')`).run();
+    previous.prepare(`INSERT INTO server_deployment_events(deployment_id,created_at,message)
+        VALUES('creation','2026-01-01','Original receipt')`).run();
+    const { migrateNativeInstances } = await import('../../src/lib/server/backends/schema.js');
+    migrateNativeInstances(previous);
+    previous.prepare(`INSERT INTO native_instances(id,server,host_id,library_id,image,port,created_at)
+        VALUES('instance','native-server','host','library','image',28960,'2026-01-01')`).run();
+    previous.close();
+
+    const { db, closeDb } = await import('../../src/lib/server/db/index.js');
+    for (let pass = 0; pass < 2; pass++) {
+        const handle = db();
+        const columns = (handle.prepare('PRAGMA table_info(servers)').all() as { name: string }[]).map(column => column.name);
+        expect(columns).not.toEqual(expect.arrayContaining(['komodo_type']));
+        expect(columns).not.toContain('komodo_name');
+        expect(columns).not.toContain('komodo_server');
+        expect(columns).toContain('operator_note');
+        expect(handle.prepare('SELECT name,game_port,operator_note FROM servers WHERE name=?').get('native-server'))
+            .toEqual({ name: 'native-server', game_port: 28960, operator_note: 'keep this' });
+        expect(handle.prepare('SELECT id,generation FROM native_instances').all()).toEqual([{ id: 'instance', generation: 1 }]);
+        expect(handle.prepare('SELECT pluto_key FROM server_keys').get()).toEqual({ pluto_key: 'saved-key' });
+        expect(handle.prepare('SELECT message FROM server_deployment_events').get()).toEqual({ message: 'Original receipt' });
+        expect(handle.pragma('foreign_key_check')).toEqual([]);
+        expect(handle.pragma('foreign_keys', { simple: true })).toBe(1);
+        closeDb();
+    }
+    // Native inserts must work without supplying the retired required field.
+    expect(() => db().prepare("INSERT INTO servers(name) VALUES('new-native-server')").run()).not.toThrow();
+});