v0.4.0

Changelog

• 38701e4 feat: add background (bg) command to run watch detached
• faae12a feat: add live status line (spinner + countdowns) to watch
• 2623153 feat: hook-based active-session detection for Claude and Codex
• b878e82 fix: submit the prompt in Claude's interactive trigger
• 52c74e9 refactor: drop GLM provider, target Claude Code and Codex only
• af71a26 refactor: hooks-only active-session detection; auto-install hooks