refactor: isolate playback and upload use cases

scripts/check-boundaries.mjs

@@ -0,0 +1,47 @@
+import { readdirSync, readFileSync } from 'node:fs';
+import { resolve, relative } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const root = fileURLToPath(new URL('../', import.meta.url));
+function sources(dir, extension) {
+  return readdirSync(resolve(root, dir), { withFileTypes: true }).flatMap((entry) => {
+    const path = `${dir}/${entry.name}`;
+    return entry.isDirectory() ? sources(path, extension) : path.endsWith(extension) ? [path] : [];
+  });
+}
+
+// Check the boundaries introduced by the refactor. Existing query projections and
+// composition roots are deliberately outside these use-case-specific rules.
+const rules = [
+  {
+    files: sources('packages/core/src', '.ts'),
+    forbidden: /(?:from\s*|import\s*)['"](?:[^'"]*apps\/|(?:@react-native[^'"]*|react(?:-native)?(?:[-\/]|['"]))|expo(?:[-\/]|['"])|\.\.[^'"]*(?:web|mobile|desktop)\/)/,
+    message: 'core must not import platform/UI implementations',
+  },
+  {
+    files: ['service.go', 'worker.go', 'placement.go', 'batch.go'].map((p) => `services/api/internal/uploads/${p}`),
+    forbidden: /github\.com\/jackc\/pgx|\.store\.pool\b|\b(?:tx|pool)\.(?:Exec|Query|QueryRow)\(/,
+    message: 'upload SQL and pgx belong in store/persistence adapters',
+  },
+  {
+    files: sources('apps/web/src/features/uploads', '.tsx').filter((p) => !p.endsWith('/common.tsx')),
+    forbidden: /\b(?:session|client)\.(?:GET|POST|PUT|PATCH|DELETE)\(/,
+    message: 'upload views must use feature API/queries',
+  },
+];
+
+const errors = [];
+for (const rule of rules) {
+  for (const path of rule.files) {
+    const text = readFileSync(resolve(root, path), 'utf8');
+    text.split(/\r?\n/).forEach((line, i) => {
+      if (rule.forbidden.test(line)) errors.push(`${relative(root, resolve(root, path))}:${i + 1}: ${rule.message}`);
+    });
+  }
+}
+if (errors.length) {
+  console.error(errors.join('\n'));
+  process.exitCode = 1;
+} else {
+  console.log('Module boundary checks passed.');
+}