chore: Deno 2 + libpkgx v0.23 (multi-version openssl/abseil)

[jhheider]

• Bump runtime from deno^1 to deno^2 with --unstable-fs/ffi
• libpkgx v0.23 via raw.githubusercontent (multi-ABI hydrate)
• cliffy/command and std yaml/assert via JSR
• resolve-pkg: reconstruct package.yml path when find() omits it
• Deno 2 type fixes (override, unknown catch, version.tag)

Enables simple openssl.org: ^3 alongside python's transitive ^1.1.

[Copilot]

Pull request overview

Updates brewkit’s Deno-based scripts and composite actions to run on Deno 2, while migrating several dependencies to JSR and adapting to newer libpkgx behaviors (including missing find().path).

Changes:

• Bump all runtime/action entrypoints from deno^1 to deno^2 and add required --unstable-fs/--unstable-ffi flags where needed.
• Migrate cliffy/command, std/yaml, and std/assert usage to JSR (@cliffy/command, @std/yaml, @std/assert) and update the import map accordingly.
• Improve compatibility with newer libpkgx by reconstructing package.yml paths when usePantry().find() omits them, and by adjusting a few Deno 2 typing/Command API changes.

Reviewed changes

Copilot reviewed 25 out of 27 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
upload-build-artifact/action.yml	Switch cache step to deno^2.
download-build-artifact/action.yml	Switch cache step to deno^2.
test/action.yml	Switch cache step to deno^2.
test/test.ts	Deno 2 shebang flags; move YAML import to @std/yaml.
scripts/publish-release.sh	Bump embedded deno runtime to deno^2.
libexec/fix-shebangs.ts	Deno 2 shebang + unstable flags.
lib/utils/Unarchiver.ts	Add override annotations for Deno 2 typing.
lib/utils.ts	Replace prototype .compact usage with utils.compact.
lib/resolve-pkg.ts	Reconstruct package.yml path when find() omits it (libpkgx≥0.23 behavior).
lib/porcelain/fix-up.ts	Replace .compact usage with utils.compact.
lib/porcelain/build-script.ts	Replace .compact usage with utils.compact.
lib/porcelain/fetch.ts	Guard err.cause assignment for unknown catches.
lib/hooks/usePantry.getVersions.ts	Replace .chuzzle/.compact; adjust transformer subprocess handling for Deno 2.
lib/hooks/usePantry.getVersions.test.ts	Move asserts import to @std/assert.
lib/hooks/useGitHubAPI.ts	Use Deno.Command().output() (single execution) for token retrieval.
lib/hooks/useCache.test.ts	Move asserts import to @std/assert.
lib/bin/fix-elf.ts	Deno 2 shebang + replace .compact/.chuzzle usage with utils functions.
lib/actions/stage.ts	Deno 2 shebang + unstable flags.
lib/actions/platform-key.ts	Deno 2 shebang + migrate Command import to @cliffy/command.
id/id.ts	Deno 2 shebang + adjust version.tag access for typing changes.
id/action.yml	Switch cache step to deno^2.
deno.jsonc	Move to Deno 2, JSR imports for std/cliffy, update libpkgx mappings.
build/build.ts	Deno 2 shebang; migrate YAML + Command imports; adjust version.tag typing.
build/action.yml	Switch cache step to deno^2.
bin/bk-edit	Bump embedded deno runtime to deno^2.
audit/audit.ts	Deno 2 shebang; migrate Command import to @cliffy/command.
audit/action.yml	Switch cache step to deno^2.

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