wasm/example: fix dev start — copy-wasm resolution + RepeatMode type
- copy-wasm.mjs used require.resolve("rockbox-wasm"), which throws
ERR_PACKAGE_PATH_NOT_EXPORTED against the package's import-only exports.
The example lives inside the package, so read dist/ from ../../dist directly.
- useRockbox INITIAL_STATUS.repeat was 0; StatusEvent.repeat is now the
RepeatMode enum → use RepeatMode.Off.
Verified: `npm run build` (tsc + vite) succeeds.