feat(config): add federated tier and rename team→standalone (FED-M1-01)

Aligns mosaic.config tier vocabulary with the federation PRD:
- Adds `federated` to the tier enum (Postgres + Valkey + pgvector)
- Renames `team` → `standalone` in StorageTier / GatewayStorageTier
- Keeps `team` as a deprecated alias that warns to stderr and maps to standalone
- Adds DEFAULT_FEDERATED_CONFIG (port 5433, pgvector memory)
- Corrects DEFAULT_STANDALONE_CONFIG.memory to keyword (PRD line 247)
- Wizard interactive promptTier offers local/standalone/federated
- Wizard headless env path now hard-rejects unknown MOSAIC_STORAGE_TIER
  values with a message naming all three valid tiers
- Interactive DATABASE_URL pre-fill is tier-aware: standalone→5432, federated→5433
- 10 new unit tests for the validator + 3 new wizard headless tests

No new behavior beyond the enum and defaults — pgvector enforcement,
tier-detector, and docker-compose overlays land in FED-M1-02..04.

Refs #460

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

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

@@ -216,8 +216,8 @@ describe('gatewayConfigStage', () => {
     expect(daemonState.startCalled).toBe(0);
   });
 
-  it('honors MOSAIC_STORAGE_TIER=team in headless path', async () => {
-    process.env['MOSAIC_STORAGE_TIER'] = 'team';
+  it('honors MOSAIC_STORAGE_TIER=standalone in headless path', async () => {
+    process.env['MOSAIC_STORAGE_TIER'] = 'standalone';
     process.env['MOSAIC_DATABASE_URL'] = 'postgresql://test/db';
     process.env['MOSAIC_VALKEY_URL'] = 'redis://test:6379';
 
@@ -231,12 +231,75 @@ describe('gatewayConfigStage', () => {
     });
 
     expect(result.ready).toBe(true);
-    expect(state.gateway?.tier).toBe('team');
+    expect(state.gateway?.tier).toBe('standalone');
     const envContents = readFileSync(daemonState.envFile, 'utf-8');
     expect(envContents).toContain('DATABASE_URL=postgresql://test/db');
     expect(envContents).toContain('VALKEY_URL=redis://test:6379');
     const mosaicConfig = JSON.parse(readFileSync(daemonState.mosaicConfigFile, 'utf-8'));
-    expect(mosaicConfig.tier).toBe('team');
+    expect(mosaicConfig.tier).toBe('standalone');
+  });
+
+  it('accepts deprecated MOSAIC_STORAGE_TIER=team as alias for standalone', async () => {
+    process.env['MOSAIC_STORAGE_TIER'] = 'team';
+    process.env['MOSAIC_DATABASE_URL'] = 'postgresql://test/db';
+    process.env['MOSAIC_VALKEY_URL'] = 'redis://test:6379';
+
+    const p = buildPrompter();
+    const state = makeState('/home/user/.config/mosaic');
+
+    const result = await gatewayConfigStage(p, state, {
+      host: 'localhost',
+      defaultPort: 14242,
+      skipInstall: true,
+    });
+
+    // Deprecated alias 'team' maps to 'standalone'
+    expect(result.ready).toBe(true);
+    expect(state.gateway?.tier).toBe('standalone');
+    const mosaicConfig = JSON.parse(readFileSync(daemonState.mosaicConfigFile, 'utf-8'));
+    expect(mosaicConfig.tier).toBe('standalone');
+  });
+
+  it('honors MOSAIC_STORAGE_TIER=federated in headless path', async () => {
+    process.env['MOSAIC_STORAGE_TIER'] = 'federated';
+    process.env['MOSAIC_DATABASE_URL'] = 'postgresql://test/feddb';
+    process.env['MOSAIC_VALKEY_URL'] = 'redis://test:6379';
+
+    const p = buildPrompter();
+    const state = makeState('/home/user/.config/mosaic');
+
+    const result = await gatewayConfigStage(p, state, {
+      host: 'localhost',
+      defaultPort: 14242,
+      skipInstall: true,
+    });
+
+    expect(result.ready).toBe(true);
+    expect(state.gateway?.tier).toBe('federated');
+    const envContents = readFileSync(daemonState.envFile, 'utf-8');
+    expect(envContents).toContain('DATABASE_URL=postgresql://test/feddb');
+    const mosaicConfig = JSON.parse(readFileSync(daemonState.mosaicConfigFile, 'utf-8'));
+    expect(mosaicConfig.tier).toBe('federated');
+    expect(mosaicConfig.memory.type).toBe('pgvector');
+  });
+
+  it('rejects an unknown MOSAIC_STORAGE_TIER value in headless mode with a descriptive warning', async () => {
+    process.env['MOSAIC_STORAGE_TIER'] = 'federatd'; // deliberate typo
+
+    const warnFn = vi.fn();
+    const p = buildPrompter({ warn: warnFn });
+    const state = makeState('/home/user/.config/mosaic');
+
+    const result = await gatewayConfigStage(p, state, {
+      host: 'localhost',
+      defaultPort: 14242,
+      skipInstall: true,
+    });
+
+    // The stage surfaces validation errors as ready:false (warning is shown to the user).
+    expect(result.ready).toBe(false);
+    // The warning message must name all three valid values.
+    expect(warnFn).toHaveBeenCalledWith(expect.stringMatching(/local.*standalone.*federated/i));
   });
 
   it('regenerates config when portOverride differs from saved GATEWAY_PORT', async () => {

packages/mosaic/src/stages/gateway-config.ts

@@ -84,10 +84,15 @@ async function promptTier(p: WizardPrompter): Promise<GatewayStorageTier> {
         hint: 'embedded database, no dependencies',
       },
       {
-        value: 'team',
-        label: 'Team',
+        value: 'standalone',
+        label: 'Standalone',
         hint: 'PostgreSQL + Valkey required',
       },
+      {
+        value: 'federated',
+        label: 'Federated',
+        hint: 'PostgreSQL + Valkey + pgvector, federation server+client',
+      },
     ],
   });
   return tier;
@@ -437,7 +442,21 @@ async function collectAndWriteConfig(
     p.log('Headless mode detected — reading configuration from environment variables.');
 
     const storageTierEnv = process.env['MOSAIC_STORAGE_TIER'] ?? 'local';
-    tier = storageTierEnv === 'team' ? 'team' : 'local';
+    if (storageTierEnv === 'team') {
+      // Deprecated alias — warn and treat as standalone
+      process.stderr.write(
+        '[mosaic] DEPRECATED: MOSAIC_STORAGE_TIER=team is deprecated — use "standalone" instead.\n',
+      );
+      tier = 'standalone';
+    } else if (storageTierEnv === 'standalone' || storageTierEnv === 'federated') {
+      tier = storageTierEnv;
+    } else if (storageTierEnv !== '' && storageTierEnv !== 'local') {
+      throw new GatewayConfigValidationError(
+        `Invalid MOSAIC_STORAGE_TIER="${storageTierEnv}" — expected "local", "standalone", or "federated" (deprecated alias "team" also accepted)`,
+      );
+    } else {
+      tier = 'local';
+    }
 
     const portEnv = process.env['MOSAIC_GATEWAY_PORT'];
     port = portEnv ? parseInt(portEnv, 10) : opts.defaultPort;
@@ -453,13 +472,13 @@ async function collectAndWriteConfig(
     hostname = hostnameEnv;
     corsOrigin = corsOverride ?? deriveCorsOrigin(hostnameEnv, 3000);
 
-    if (tier === 'team') {
+    if (tier === 'standalone' || tier === 'federated') {
       const missing: string[] = [];
       if (!databaseUrl) missing.push('MOSAIC_DATABASE_URL');
       if (!valkeyUrl) missing.push('MOSAIC_VALKEY_URL');
       if (missing.length > 0) {
         throw new GatewayConfigValidationError(
-          'Headless install with tier=team requires env vars: ' + missing.join(', '),
+          `Headless install with tier=${tier} requires env vars: ` + missing.join(', '),
         );
       }
     }
@@ -467,11 +486,15 @@ async function collectAndWriteConfig(
     tier = await promptTier(p);
     port = await promptPort(p, opts.defaultPort);
 
-    if (tier === 'team') {
+    if (tier === 'standalone' || tier === 'federated') {
+      const defaultDbUrl =
+        tier === 'federated'
+          ? 'postgresql://mosaic:mosaic@localhost:5433/mosaic'
+          : 'postgresql://mosaic:mosaic@localhost:5432/mosaic';
       databaseUrl = await p.text({
         message: 'DATABASE_URL',
-        initialValue: 'postgresql://mosaic:mosaic@localhost:5433/mosaic',
-        defaultValue: 'postgresql://mosaic:mosaic@localhost:5433/mosaic',
+        initialValue: defaultDbUrl,
+        defaultValue: defaultDbUrl,
       });
       valkeyUrl = await p.text({
         message: 'VALKEY_URL',
@@ -521,7 +544,7 @@ async function collectAndWriteConfig(
     `OTEL_SERVICE_NAME=mosaic-gateway`,
   ];
 
-  if (tier === 'team' && databaseUrl && valkeyUrl) {
+  if ((tier === 'standalone' || tier === 'federated') && databaseUrl && valkeyUrl) {
     envLines.push(`DATABASE_URL=${databaseUrl}`);
     envLines.push(`VALKEY_URL=${valkeyUrl}`);
   }
@@ -545,12 +568,19 @@ async function collectAndWriteConfig(
           queue: { type: 'local', dataDir: join(opts.gatewayHome, 'queue') },
           memory: { type: 'keyword' },
         }
-      : {
-          tier: 'team',
-          storage: { type: 'postgres', url: databaseUrl },
-          queue: { type: 'bullmq', url: valkeyUrl },
-          memory: { type: 'pgvector' },
-        };
+      : tier === 'federated'
+        ? {
+            tier: 'federated',
+            storage: { type: 'postgres', url: databaseUrl },
+            queue: { type: 'bullmq', url: valkeyUrl },
+            memory: { type: 'pgvector' },
+          }
+        : {
+            tier: 'standalone',
+            storage: { type: 'postgres', url: databaseUrl },
+            queue: { type: 'bullmq', url: valkeyUrl },
+            memory: { type: 'keyword' },
+          };
 
   writeFileSync(opts.mosaicConfigFile, JSON.stringify(mosaicConfig, null, 2) + '\n', {
     mode: 0o600,

packages/mosaic/src/types.ts

@@ -58,7 +58,7 @@ export interface HooksState {
   acceptedAt?: string;
 }
 
-export type GatewayStorageTier = 'local' | 'team';
+export type GatewayStorageTier = 'local' | 'standalone' | 'federated';
 
 export interface GatewayAdminState {
   name: string;