chore: release 0.7.1

[astyfx]

Summary

• Bump Stave from 0.7.0 to 0.7.1.
• Add 0.7.1 changelog notes for the packaged desktop white-screen fix from fix(desktop): resolve packaged window asset paths #59.
• Note the new regression coverage for packaged Electron asset paths.

Verification

• bun install --frozen-lockfile: pass
• bun run typecheck: pass
• bun test tests/ipc-schemas.test.ts tests/run-desktop-built.test.ts tests/electron-window-paths.test.ts: pass
• bun run build:desktop: pass

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