#1385 chore: release v0.4.50

Summary

Promotes dev to main for the v0.4.50 stable release. After merge, tag v0.4.50 is pushed on main to trigger release.yml (desktop bundles, termul-server, updater manifests).

Related Issue

Release task. No issue.

Type of Change

• chore: maintenance or tooling

What Changed

• Head is chore: release v0.4.50 (#1381), which bumps package.json, src-tauri/Cargo.toml, src-tauri/tauri.conf.json, and src-tauri/Cargo.lock.
• Includes the CI repairs on dev that unblocked it: #1382 (Biome format) and #1384 (racy PromptQueuePanel test).
• Brings every dev change since v0.4.21 to main.

How It Was Tested

• #1381 CI run 39106945048 passed: Lint, Typecheck & Test, Rust Checks, Rust Windows Smoke Check, Standalone Server Build, Web Client Build, Verify Tauri Frontend Build.
• TAG_VERSION=0.4.50 bun scripts/align-version.ts passes.

Checklist

• Conventional-commit PR title
• No unrelated modifications
• Read AGENTS.md

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Summary by cubic

Promotes dev to main for the v0.4.50 stable release, bringing every change since v0.4.21 to the stable channel.

Bumps the version to 0.4.50 in package.json, Cargo.toml, tauri.conf.json, and Cargo.lock, and includes the CI repairs on dev that unblocked the release.

Rollout

• After merge, push tag v0.4.50 on main to trigger release.yml (desktop bundles, x64 and arm64 termul-server, updater manifests).