chore: bump version to 0.1.28

[sauravpanda]

Summary

Release v0.1.28 — bumps version in package.json, Cargo.toml, Cargo.lock, and tauri.conf.json.

Changes since v0.1.27

• fix: terminal view breaks with many terminals across worktrees (fix: terminal view breaks with many terminals across worktrees #422) — drops WebglAddon (context exhaustion) and renders only the active worktree's terminals (unbounded-mount leak). Behavior change: switching worktrees no longer preserves the running shell; tab/split layout persists, PTYs are fresh on return.

Test plan

• CI green
• After merge: tag v0.1.28 to trigger the release workflow