feat: lay groundwork for multi-flow registries

tests/source-registry-module.test.js

@@ -0,0 +1,56 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+
+test('background imports shared source registry module', () => {
+  const source = fs.readFileSync('background.js', 'utf8');
+  assert.match(source, /shared\/source-registry\.js/);
+});
+
+test('manifest loads shared source registry before content utils in static bundles', () => {
+  const manifest = JSON.parse(fs.readFileSync('manifest.json', 'utf8'));
+  for (const entry of manifest.content_scripts || []) {
+    const scripts = Array.isArray(entry.js) ? entry.js : [];
+    if (!scripts.includes('content/utils.js')) continue;
+    assert.ok(scripts.includes('shared/source-registry.js'));
+    assert.ok(
+      scripts.indexOf('shared/source-registry.js') < scripts.indexOf('content/utils.js'),
+      'shared/source-registry.js must load before content/utils.js'
+    );
+  }
+});
+
+test('shared source registry exposes canonical source, alias, detection, and ready policies', () => {
+  const source = fs.readFileSync('shared/source-registry.js', 'utf8');
+  const api = new Function('self', `${source}; return self.MultiPageSourceRegistry;`)({});
+  const registry = api.createSourceRegistry();
+
+  assert.equal(registry.resolveCanonicalSource('signup-page'), 'openai-auth');
+  assert.deepEqual(registry.getSourceKeys('signup-page'), ['openai-auth', 'signup-page']);
+  assert.equal(registry.getSourceLabel('openai-auth'), '认证页');
+  assert.equal(
+    registry.matchesSourceUrlFamily(
+      'openai-auth',
+      'https://chatgpt.com/',
+      'https://auth.openai.com/authorize?client_id=test'
+    ),
+    true
+  );
+  assert.equal(
+    registry.detectSourceFromLocation({
+      url: 'https://auth.openai.com/create-account',
+      hostname: 'auth.openai.com',
+    }),
+    'openai-auth'
+  );
+  assert.equal(
+    registry.detectSourceFromLocation({
+      url: 'https://example.com/',
+      hostname: 'example.com',
+    }),
+    'unknown-source'
+  );
+  assert.equal(registry.shouldReportReadyForFrame('mail-163', true), false);
+  assert.equal(registry.shouldReportReadyForFrame('unknown-source', false), false);
+  assert.equal(registry.getCleanupOwnerSource('oauth-localhost-callback'), 'openai-auth');
+});