[AndreKalberer]

LG TV staging interpreted JavaScript replacement tokens such as $& inside bundled HLS as HTML replacement instructions. This corrupted the generated page with nested script tags and prevented HLS from parsing. Callback replacements now preserve dynamic asset contents literally, including JavaScript, CSS, embedded image attributes, CSP, and Samsung version capture.

Adds a deterministic regression covering replacement tokens and script terminators across all six bundled scripts, plus a reusable smoke check for the actual staged page. The regression runs in npm test.

Validation:

• Fresh npm test and npm run tv:stage passed.
• Actual generated LG page: Hls executes, six inline scripts, no external scripts or leaked JavaScript nodes, no overflow at 1920/1280/720 widths, local WAV playback readiness, and no uncaught exceptions.
• Independent review reported no findings; staged and extracted LG IPK verification passed, including the combined 2.3.8 integration build.

Physical TV hardware remains untested. Scope is four source/test files; generated packages and local profiles are excluded.