daily-summary 是做什么的？
Generates daily work summaries based on active Claude Code / Codex sessions from the day. Scans Claude Code .jsonl files under ~/.claude/projects and Codex rollout-*.jsonl files indexed by ~/.codex/state_5.sqlite, reconstructs work topics from user messages, assistant replies, tool calls, and command results, organizes the day's work around a "full-day timeline" as the main axis (including a Gantt chart that visualizes which project you worked on at each point in time), and around "per-project progress" as the secondary axis to explain each project. The output is directly structured as an HTML document (no intermediate Markdown), and sent to the user's Feishu email via lark-cli. Use this skill when the user says "Summarize today's work," "Organize a daily report from conversations," "Output a daily summary," or similar requests.