fix: Restore all files lost during destructive rebase

A previous `git pull --rebase origin main` dropped 177 local commits,
losing 3400+ files across admin-v2, backend, studio-v2, website,
klausur-service, and many other services. The partial restore attempt
(660295e2) only recovered some files.

This commit restores all missing files from pre-rebase ref 98933f5e
while preserving post-rebase additions (night-scheduler, night-mode UI,
NightModeWidget dashboard integration).

Restored features include:
- AI Module Sidebar (FAB), OCR Labeling, OCR Compare
- GPU Dashboard, RAG Pipeline, Magic Help
- Klausur-Korrektur (8 files), Abitur-Archiv (5+ files)
- Companion, Zeugnisse-Crawler, Screen Flow
- Full backend, studio-v2, website, klausur-service
- All compliance SDKs, agent-core, voice-service
- CI/CD configs, documentation, scripts

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

breakpilot-drive/UnityScripts/Plugins/WebGL/AuthPlugin.jslib

@@ -0,0 +1,54 @@
+// ==============================================
+// AuthPlugin.jslib - WebGL JavaScript Bridge
+// ==============================================
+// Place in Assets/Plugins/WebGL/
+
+mergeInto(LibraryManager.library, {
+
+    // Get token from URL parameter (?token=xxx)
+    GetTokenFromURL: function() {
+        var urlParams = new URLSearchParams(window.location.search);
+        var token = urlParams.get('token');
+        if (token) {
+            var bufferSize = lengthBytesUTF8(token) + 1;
+            var buffer = _malloc(bufferSize);
+            stringToUTF8(token, buffer, bufferSize);
+            return buffer;
+        }
+        return null;
+    },
+
+    // Get token from parent frame (for iframe embedding)
+    GetTokenFromParent: function() {
+        if (window.breakpilotToken) {
+            var token = window.breakpilotToken;
+            var bufferSize = lengthBytesUTF8(token) + 1;
+            var buffer = _malloc(bufferSize);
+            stringToUTF8(token, buffer, bufferSize);
+            return buffer;
+        }
+        return null;
+    },
+
+    // Request token from parent frame via postMessage
+    RequestTokenFromParent: function() {
+        // Listen for token from parent
+        window.addEventListener('message', function(event) {
+            // Verify origin in production!
+            if (event.data && event.data.type === 'breakpilot_token') {
+                window.breakpilotToken = event.data.token;
+
+                // Send to Unity
+                if (window.unityInstance) {
+                    window.unityInstance.SendMessage('AuthManager', 'ReceiveTokenFromJS', event.data.token);
+                }
+            }
+        }, false);
+
+        // Request token from parent
+        if (window.parent !== window) {
+            window.parent.postMessage({ type: 'breakpilot_request_token' }, '*');
+        }
+    }
+
+});