feat: HLS streaming, transcripts, agent course generation & landing-page course previews (#663)

New features:
- HLS video encoding/streaming (hls routes, hls-encoder) and a media
  transcripts pipeline (transcripts route + media-transcript queries)
- AI assistant chat vs. run model: agent-course-generation worker/queue,
  run-monitor pane, chat-changes card, content ask-ai bar
- Per-theme course-page previews across org landing-page themes (bold,
  classic, corporate, editorial, etc.) with a shared course token/component set
- View-as-student mode and login-link / link-invite invite flows

Refactor:
- Extract packages/core consolidating config (env, storage, dashboard-url),
  services and utils previously duplicated under apps/api/src/config
- Remove legacy agent service modules (chat-tools, chat-context,
  context-window, document, fetch-url, lesson-content)
- Relax Cross-Origin-Resource-Policy to allow cross-origin media embedding
- Add format script to tenant-router so turbo run format covers it

apps/dashboard/src/lib/features/license/api/license.svelte.ts

@@ -1,4 +1,11 @@
-import { LICENSE_FEATURE_IDS, type LicenseFeatureId } from '@cio/utils/license';
+import { PUBLIC_IS_SELFHOSTED } from '$env/static/public';
+import type { AccountOrg } from '$features/app/types';
+import {
+  getActivePlanName,
+  getLicenseFeaturesForPlan,
+  LICENSE_FEATURE_IDS,
+  type LicenseFeatureId
+} from '@cio/utils/license';
 
 class LicenseApi {
   features = $state<LicenseFeatureId[]>([]);
@@ -9,6 +16,15 @@ class LicenseApi {
     this.isResolved = true;
   }
 
+  syncFromAccount(instanceFeatures: string[] = [], org?: Pick<AccountOrg, 'plans'>) {
+    if (PUBLIC_IS_SELFHOSTED === 'true') {
+      this.setFeatures(instanceFeatures);
+      return;
+    }
+
+    this.setFeatures(getLicenseFeaturesForPlan(getActivePlanName(org?.plans)));
+  }
+
   hasAccess(feature: LicenseFeatureId): boolean {
     return this.features.includes(feature);
   }