feat(gdu): add manualChunks for mfe-configs chunk naming (#400)

* feat(gdu): add manualChunks to Vite config for mfe-configs chunk naming

Route all packages/global-configs modules into a mfe-configs named chunk,
mirroring webpack's splitChunks convention. Ensures CI tokenReplacement.sh
can find and replace #{...} config tokens in Vite/Rolldown builds, fixing
WebSocket subscription failures from unreplaced tokens.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: Applies formatting

* Update packages/gdu/config/vite/types.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update packages/gdu/config/vite/vite.config.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: 3 people

.changeset/vite-manual-chunks-mfe-configs.md

@@ -0,0 +1,7 @@
+---
+"gdu": minor
+---
+
+feat(gdu): add manualChunks to Vite config for mfe-configs chunk naming
+
+Routes all `packages/global-configs` modules into a `mfe-configs` named chunk, mirroring webpack's `splitChunks.cacheGroups.mfeConfigs` convention. This ensures CI token replacement (`tokenReplacement.sh`) can find and replace `#{...}` config tokens in Vite/Rolldown builds, fixing WebSocket subscription failures caused by unreplaced tokens in arbitrarily-named chunks.

packages/gdu/config/vite/types.ts

@@ -13,6 +13,10 @@ export interface RolldownOutputOptions {
 	chunkFileNames?: string;
 	assetFileNames?: string;
 	paths?: Record<string, string>;
+	manualChunks?: (
+		id: string,
+		meta: { getModuleInfo: (id: string) => unknown },
+	) => string | void;
 }
 
 export interface RolldownOutputChunk {

packages/gdu/config/vite/vite.config.ts

@@ -128,6 +128,13 @@ export const baseViteOptions = ({
 					chunkFileNames: 'chunks/[name]-[hash:8].js',
 					assetFileNames: '[name]-[hash:8][extname]',
 					...(externalKeys.length > 0 ? { paths: externalsMap } : {}),
+					manualChunks(id) {
+						const normalizedId = id.replace(/\\/g, '/');
+						if (normalizedId.includes('packages/global-configs')) {
+							return 'mfe-configs';
+						}
+						return null;
+					},
 				},
 			},
 		},