fix: bump native binaries to b8480 (16KB page-aligned)

[beniamin-szilagyi]

Summary

• Bumps _llamaCppTag from b8373 to b8480 in hook/build.dart
• The b8480 release of leehack/llamadart-native includes 16KB page-aligned Android .so files (via fix: align Android bundles for 16 KB page devices llamadart-native#6), required for Android 15+ and Play Store compliance

Test plan

• Build Android AAB and verify with readelf -lW that all LOAD segments have 0x4000 alignment

🤖 Generated with Claude Code

[leehack]

@beniamin-szilagyi Wow! I was about to work on this later today, but you were so fast. :) Thanks for the contribution. Do you mind also running ffigen with the version of llama.cpp? You should be able to find the headers in the llamadart-native package.

[beniamin-szilagyi]

@leehack thanks!

I tried running ffigen locally but I'm on macOS, which produces macOS-specific FILE struct definitions instead of the Linux _IO_FILE in the current bindings.

Could you trigger the Sync Native Version & Bindings workflow with tag b8480? That would generate the correct bindings on Ubuntu.

Happy to help either way.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.90%. Comparing base (c8bfd05) to head (9d02b68).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #91   +/-   ##
=======================================
  Coverage   76.90%   76.90%           
=======================================
  Files          67       67           
  Lines        8368     8368           
=======================================
  Hits         6435     6435           
  Misses       1933     1933           

Flag	Coverage Δ
unittests	76.90% <ø> (ø)

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[leehack]

Closing it in favor of #92