feat: add manual Skin market submissions

[bobleer]

Summary

• add a desktop-only manual upload form to Skin Market → My submissions
• reuse the existing Appearance package validation and submission orchestration instead of sending package bytes through frontend JSON
• derive new listing/release targets, keep uploads on the controller device, and register the command in remote/peer policies
• add English, Simplified Chinese, and Traditional Chinese copy plus focused UI/API/Rust tests

Verification

• pnpm run type-check:web
• pnpm --dir src/web-ui run test:run src/infrastructure/api/service-api/AppearanceMarketAPI.test.ts src/infrastructure/config/components/AppearanceMarketDialog.test.tsx
• pnpm run i18n:audit
• pnpm --dir src/web-ui exec eslint src/infrastructure/api/service-api/AppearanceMarketAPI.ts src/infrastructure/api/adapters/peer-device-adapter.ts src/infrastructure/config/components/AppearanceMarketWorkflows.tsx
• cargo test -p bitfun-desktop appearance_market
• cargo test -p bitfun-desktop remote_workspace_policy
• cargo check -p bitfun-desktop
• git diff --check

AI-assisted: yes. Testing level: fully tested for the affected frontend and desktop command paths.