fix[notask]: expose binding.js via package exports on audiogen-ggml + tts-ggml for mobile bundler (#4087)

* fix[notask][audiogen-ggml]: expose binding.js via package exports for mobile bundler

The mobile bundler (qvac-test-addon-mobile at HEAD, called by
integration-mobile-test-audiogen-ggml.yml) recently tightened its enforcement
of the package.json "exports" field. Files not declared in "exports" are now
stripped from the on-device app.bundle. Since audiogen-ggml's exports listed
".", "./models", "./test/benchmark-runner" but NOT "./binding.js", the
bundler excluded binding.js from the shipped module, and require('./binding')
in index.js (line ~784, _createAddon) failed on device with

  MODULE_NOT_FOUND: Cannot find module './binding'
  imported from 'file:///app.bundle/node_modules/@qvac/audiogen-ggml/index.js'

Both testLoadModels and testGenerateMusicOnGpu failed within ~1 s during
addon construction (before any user code ran).

Pattern matches how @qvac/asr-ggml and @qvac/llm-llamacpp already declare
"./binding.js": "./binding.js" for the same reason. @qvac/audiogen-ggml and
@qvac/tts-ggml never added it and worked by accident under the older,
lenient bundler; the tighter enforcement (landing alongside the Node 22 +
Appium 3 bump on 2026-08-22) exposed the gap.

Verification
- Reproduced on main (Android Device Farm run 32972232229) and on an
  unrelated feature branch (run 32967429767) — identical error signature.
- Cross-check: @qvac/asr-ggml Android mobile CI on 2026-08-25 (run
  32841431292) loaded the addon successfully (6 GPU-smoke test cases ran
  end-to-end with real 4-60 s timings), confirming the failure is
  package-specific, not a global mobile-bundler outage.
- Fix scope: single-line addition to the exports field. No source or
  behavioral change to the addon itself; binding.js content is unchanged.

Unblocks any downstream mobile validation of @qvac/audiogen-ggml
(functional smoke + RTF benchmark), which has been red on main since the
bundler tightening landed.

* fix[notask][tts-ggml]: expose binding.js via package exports for mobile bundler

Same class of bug as the audiogen-ggml fix in this PR: mobile bundler
enforces "exports"; binding.js was not declared and gets stripped from the
on-device app.bundle, breaking require('./binding') in index.js at runtime.

@qvac/tts-ggml hasn't been mobile-tested since 2026-08-18 (before the
bundler tightening on 2026-08-22), so the failure hasn't been observed
empirically yet — but the diagnosis and fix are identical, and the pattern
matches how @qvac/asr-ggml and @qvac/llm-llamacpp already declare the same
"./binding.js": "./binding.js" export.

Pre-empting: without this line, the next mobile tts-ggml CI run will fail
the same way audiogen-ggml did.

---------

Co-authored-by: GustavoA1604 <54457676+GustavoA1604@users.noreply.github.com>

Author: Alok-Ranjan23

packages/audiogen-ggml/package.json

@@ -37,6 +37,7 @@
   "exports": {
     "./package": "./package.json",
     ".": "./index.js",
+    "./binding.js": "./binding.js",
     "./models": "./models.js",
     "./test/benchmark-runner": "./test/utils/benchmark-runner.js"
   },

packages/tts-ggml/package.json

@@ -94,6 +94,7 @@
       "types": "./index.d.ts",
       "default": "./index.js"
     },
+    "./binding.js": "./binding.js",
     "./text-chunker": {
       "types": "./lib/textChunker.d.ts",
       "default": "./lib/textChunker.js"