add debug printout for Runtime.hs for github CI

Author: Zer0-

.github/workflows/main.yml

@@ -43,6 +43,20 @@ jobs:
      - name: Bun build prod
        run: bun run build && bun run prod
 
+     - name: Debug Verify miso source content
+       run: |
+         echo "=== Git state ==="
+         git log -1 --oneline
+         echo "=== Local Runtime.hs Bidirectional definition ==="
+         grep -B2 -A5 "data.*Bidirectional\|Bidirectional.*=" src/Miso/Runtime.hs || echo "Not found in expected location"
+         echo "=== Nix source path evaluation ==="
+         nix-instantiate --eval --strict -E '
+           let pkgs = import <nixpkgs> {};
+               sources = import ./nix/source.nix { inherit pkgs; };
+           in sources.miso' 2>&1 | head -20
+         echo "=== Hash of local Runtime.hs ==="
+         sha256sum src/Miso/Runtime.hs
+
      - name: (JS) Miso GHCJS (GHCJS 8.6)
        run: nix-build -A miso-ghcjs