feat(storage): pgvector adapter support gated on tier=federated (FED-M1-03) (#472)

packages/config/src/mosaic-config.spec.ts

@@ -1,6 +1,7 @@
 import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
 import {
   validateConfig,
+  detectFromEnv,
   DEFAULT_LOCAL_CONFIG,
   DEFAULT_STANDALONE_CONFIG,
   DEFAULT_FEDERATED_CONFIG,
@@ -106,4 +107,64 @@ describe('DEFAULT_* config constants', () => {
     const url = (DEFAULT_FEDERATED_CONFIG.storage as { url: string }).url;
     expect(url).toContain('5433');
   });
+
+  it('DEFAULT_FEDERATED_CONFIG has enableVector=true on storage', () => {
+    const storage = DEFAULT_FEDERATED_CONFIG.storage as {
+      type: string;
+      url: string;
+      enableVector?: boolean;
+    };
+    expect(storage.enableVector).toBe(true);
+  });
+});
+
+describe('detectFromEnv — tier env-var routing', () => {
+  const originalEnv = process.env;
+
+  beforeEach(() => {
+    // Work on a fresh copy so individual tests can set/delete keys freely.
+    process.env = { ...originalEnv };
+    delete process.env['MOSAIC_STORAGE_TIER'];
+    delete process.env['DATABASE_URL'];
+    delete process.env['VALKEY_URL'];
+  });
+
+  afterEach(() => {
+    process.env = originalEnv;
+  });
+
+  it('no env vars → returns local config', () => {
+    const config = detectFromEnv();
+    expect(config.tier).toBe('local');
+    expect(config.storage.type).toBe('pglite');
+    expect(config.memory.type).toBe('keyword');
+  });
+
+  it('MOSAIC_STORAGE_TIER=federated alone → returns federated config with enableVector=true', () => {
+    process.env['MOSAIC_STORAGE_TIER'] = 'federated';
+    const config = detectFromEnv();
+    expect(config.tier).toBe('federated');
+    expect(config.memory.type).toBe('pgvector');
+    const storage = config.storage as { type: string; enableVector?: boolean };
+    expect(storage.enableVector).toBe(true);
+  });
+
+  it('MOSAIC_STORAGE_TIER=federated + DATABASE_URL → uses the URL and still has enableVector=true', () => {
+    process.env['MOSAIC_STORAGE_TIER'] = 'federated';
+    process.env['DATABASE_URL'] = 'postgresql://custom:pass@db.example.com:5432/mydb';
+    const config = detectFromEnv();
+    expect(config.tier).toBe('federated');
+    const storage = config.storage as { type: string; url: string; enableVector?: boolean };
+    expect(storage.url).toBe('postgresql://custom:pass@db.example.com:5432/mydb');
+    expect(storage.enableVector).toBe(true);
+    expect(config.memory.type).toBe('pgvector');
+  });
+
+  it('MOSAIC_STORAGE_TIER=standalone alone → returns standalone-shaped config (not local)', () => {
+    process.env['MOSAIC_STORAGE_TIER'] = 'standalone';
+    const config = detectFromEnv();
+    expect(config.tier).toBe('standalone');
+    expect(config.storage.type).toBe('postgres');
+    expect(config.memory.type).toBe('keyword');
+  });
 });