refactor: consolidate single-source routing and protocol helpers

scripts/dev/copy-runtime-db-generated.ts

@@ -1,14 +1,22 @@
-import { cpSync, existsSync, mkdirSync } from 'node:fs';
-import { dirname, resolve } from 'node:path';
+import { cpSync, existsSync, mkdirSync, rmSync, statSync } from 'node:fs';
+import { basename, dirname, resolve } from 'node:path';
 import { fileURLToPath } from 'node:url';
 
 function resolveRepoRoot(): string {
   return resolve(dirname(fileURLToPath(import.meta.url)), '../..');
 }
 
+function shouldCopySharedArtifact(sourcePath: string): boolean {
+  if (statSync(sourcePath).isDirectory()) return true;
+  const filename = basename(sourcePath);
+  return filename.endsWith('.js') || filename.endsWith('.d.ts');
+}
+
 export function copyRuntimeDbGeneratedAssets(repoRoot: string = resolveRepoRoot()): void {
   const sourceDir = resolve(repoRoot, 'src/server/db/generated');
   const targetDir = resolve(repoRoot, 'dist/server/db/generated');
+  const sharedSourceDir = resolve(repoRoot, 'src/shared');
+  const sharedTargetDir = resolve(repoRoot, 'dist/shared');
 
   if (!existsSync(sourceDir)) {
     throw new Error(`Runtime DB generated assets directory does not exist: ${sourceDir}`);
@@ -16,6 +24,16 @@ export function copyRuntimeDbGeneratedAssets(repoRoot: string = resolveRepoRoot(
 
   mkdirSync(dirname(targetDir), { recursive: true });
   cpSync(sourceDir, targetDir, { recursive: true, force: true });
+
+  if (existsSync(sharedSourceDir)) {
+    rmSync(sharedTargetDir, { recursive: true, force: true });
+    mkdirSync(dirname(sharedTargetDir), { recursive: true });
+    cpSync(sharedSourceDir, sharedTargetDir, {
+      recursive: true,
+      force: true,
+      filter: (sourcePath) => shouldCopySharedArtifact(sourcePath),
+    });
+  }
 }
 
 if (process.argv[1] && resolve(process.argv[1]) === fileURLToPath(import.meta.url)) {