Use raw.githubusercontent.com permalink for model URLs

Point to commit e23a50e where the files still exist on main.
No new branch or repo needed — git history serves as permanent storage.

raw.githubusercontent.com serves:
- Access-Control-Allow-Origin: *
- Cross-Origin-Resource-Policy: cross-origin

https://claude.ai/code/session_01T73Yphu4y2U3c3ctCcHVPf

Author: claude

src/contexts/MaiaEngineContext.tsx

@@ -33,7 +33,7 @@ export const MaiaEngineContextProvider: React.FC<{ children: ReactNode }> = ({
     const model = new Maia({
       model:
         process.env.NEXT_PUBLIC_MAIA_MODEL_URL ??
-        'https://raw.githubusercontent.com/CSSLab/maia-platform-frontend/models/maia2/maia_rapid.onnx',
+        'https://raw.githubusercontent.com/CSSLab/maia-platform-frontend/e23a50e/public/maia2/maia_rapid.onnx',
       setStatus: setStatus,
       setProgress: setProgress,
       setError: setError,

src/lib/engine/stockfish.ts

@@ -350,12 +350,11 @@ const setupStockfish = (): Promise<StockfishWeb> => {
           locateFile: (name: string) => `/stockfish/${name}`,
         })
         .then(async (instance: StockfishWeb) => {
-          // NNUE weights are hosted on a separate branch and served via
-          // raw.githubusercontent.com (CORS + COEP compatible).
+          // NNUE weights served via raw.githubusercontent.com permalink (CORS + COEP compatible).
           // Override with NEXT_PUBLIC_STOCKFISH_NNUE_BASE_URL for self-hosted deployments.
           const nnueBaseUrl =
             process.env.NEXT_PUBLIC_STOCKFISH_NNUE_BASE_URL ??
-            'https://raw.githubusercontent.com/CSSLab/maia-platform-frontend/models/stockfish'
+            'https://raw.githubusercontent.com/CSSLab/maia-platform-frontend/e23a50e/public/stockfish'
           // Load NNUE models before resolving
           Promise.all([
             fetch(`${nnueBaseUrl}/${instance.getRecommendedNnue(0)}`),