feat: add more architectures support

[miwu04]

Description

适配更多的架构，增加了loongarch64，mips64el，powerpc64le，riscv64

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (must be discussed and approved in an issue first)
• Refactor (no functional change)
• Documentation / i18n
• CI / build configuration

How has this been tested?

AI usage disclosure

• No AI tools were used
• AI tools assisted with drafting, refactoring, or boilerplate (I reviewed and understand every line)
• Substantial portions were AI-generated (I reviewed, tested, and can explain every change)
  AI对架构名的匹配并不太正确

If AI was used, specify the tool: MiniMax M2.7

Checklist

Required — PR will not be reviewed without these

• I have read CONTRIBUTING.md
• PR changes fewer than 300 lines of code (excluding tests and generated files)
• PR touches fewer than 10 files
• PR addresses one concern only — no mixed features, config tweaks, or unrelated fixes
• All commands pass locally:

  pnpm format:check
  npx vue-tsc --noEmit
  pnpm test 
  cd src-tauri && cargo test
  

ci暂时未修改，pnpm test命令不可通过

• Commits follow Conventional Commits format

If applicable

• New feature was discussed and approved in an issue before implementation
• Tests written before implementation (TDD: red → green → refactor)
• i18n keys updated in all 26 locales via batch Python script (see AGENTS.md §D)
• New config key follows the full checklist in AGENTS.md §C
• Rust changes compile with cargo clippy (zero warnings)

Release notes

Notes:
信创用户需要对新架构的支持

[miwu04]

AnInsomniacy/aria2-builder#1
对应的静态aria2已创建pr

[miwu04]

若原生构建，该pr缺少对应平台的tauri-app/cli，而这么多架构只有riscv64有对应平台的tauri-app/cli
本次测试是在AOSC OS上完成，该系统的tauri-cli是系统内建，不借助npm仓库的tauri-app/cli
相关进度在 AOSC-Dev/aosc-os-abbs#15565 可查

[miwu04]

rollup缺少mips64el,不清楚上游对mips64el的态度,暂时保留
经测试，riscv64的实际产物错误，对应不上，已修改

[miwu04]

Action 暂时不做修改，等待作者对pr的讨论

[miwu04]

不好意思，usePlatform的标签应该使用rust生态的架构名去对应，而不是nodejs生态，马上修复

[miwu04]

补充：mips和PowerPC都只做了小端序的适配

[Copilot]

Pull request overview

This PR extends the app’s multi-architecture support by adding additional Linux target triples to the sidecar-binary validation suite and exposing human-readable labels for new CPU architectures in the platform composable.

Changes:

• Added loongarch64, mips64el, powerpc64le, and riscv64gc Linux target triples to sidecar binary structural tests (including ELF e_machine assertions).
• Added new architecture label mappings in usePlatform and corresponding unit tests for label outputs.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/shared/__tests__/sidecarBinaries.test.ts	Expands expected target triples and ELF machine-type assertions for additional Linux architectures.
src/composables/usePlatform.ts	Adds human-readable labels for additional architectures.
src/composables/__tests__/usePlatform.test.ts	Adds label tests for new architectures (but drops unknown-arch fallback coverage).

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[Copilot]

Adding these new Linux target triples makes the test suite fail with the current repo state: (1) the corresponding sidecar binaries are not present under src-tauri/binaries, so the “exists” assertions will fail; and (2) the CI matrix sync guard asserts release.yml contains every EXPECTED_TARGET, but .github/workflows/release.yml currently only includes x86_64/aarch64 Linux targets. Either add the new binaries + update the release.yml matrix in this PR, or keep EXPECTED_TARGETS limited to what the repo/CI actually builds today.

Suggested change

	'loongarch64-unknown-linux-gnu',
	'mips64el-unknown-linux-gnu',
	'powerpc64le-unknown-linux-gnu',
	'riscv64gc-unknown-linux-gnu',

[miwu04]

waiting aria2-builder