[wieslawsoltes]

Closes #832.

Change

• partition the 19.8 KiB Audio platform source into 11.9 KiB and 8.0 KiB adjacent raw literals
• preserve the exact JavaScript byte stream at compile time
• extend the bootstrap portability regression with per-literal size and whole-source SHA-256 gates

Stack

• Export bounded desktop and media host APIs #823
• Repair CSS custom property native compilation #824
• Restore CSS identities and document footprint #829
• Update native bindings for current V8 APIs #830
• Restore full V8 CSS compilation #831
• this PR

Validation

• bootstrap portability suite: 5/5 passed
• full V8 runtime syntax compile with generated DOM bindings and media enabled passed against the pinned headers
• git diff --check
• one exact package gate will run on this top stack commit