Fix release Tauri dependency alignment

[iptoux]

Summary

Fixes the release workflow failure from run 28372335011 where every platform stopped in pnpm tauri build before compilation.

Root cause

The Rust Tauri crate resolved to tauri 2.11.1, but the frontend package lock still installed @tauri-apps/api 2.10.1. Tauri validates Rust and JS package major/minor alignment and fails early when they drift.

Changes

• Align @tauri-apps/api and @tauri-apps/cli to 2.11.1.
• Update @tauri-apps/plugin-opener to 2.5.4 so it resolves against the 2.11.x API range.
• Use pnpm install --frozen-lockfile in all release build jobs so release packaging matches CI dependency resolution.
• Document the release dependency rule in README/dev docs and add a changelog entry.

Verification

• pnpm install --frozen-lockfile
• pnpm tauri info
• pnpm run lint
• pnpm run test
• pnpm run build
• pnpm tauri build --no-bundle

Known existing warnings remain: React act(...) test warnings and Vite chunk warnings. The failed release early-exit is fixed locally by the passing Tauri build/version check.