Publish compatible updater archives

[jamditis]

Before submitting

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• I searched existing issues and pull requests (including closed ones) so this isn't a duplicate
• I tested this change locally

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Description

Package signed NSIS updater archives with stored ZIP entries, matching the compression methods enabled in AudioBud's Tauri updater build. Prepare v0.4.4 as the safe replacement for the published-but-unpromoted v0.4.3 updater archive.

The real v0.4.3 feed run downloaded all 28,005,984 bytes and verified the signature, then failed closed with unsupported Zip archive: Compression method not supported. The live feed remains on v0.4.2.

Related issues

Related to #159.

Testing

• Regression test failed before the workflow fix and passes afterward
• bun test — 286 tests passed with 1,418 expectations
• bun run lint
• bun run tsc
• Scoped Prettier checks for all changed supported files
• git diff --check
• Two-pass local review with gpt-5.5 low and gpt-5.6-sol xhigh; no findings
• bun run format:check could not run Cargo formatting because Cargo is not installed on this host; the Rust changes are version-only manifest updates

Screenshots / videos (optional)

Not applicable; this changes release packaging only.