Feature: Track usage statistics per service/command

[AThraen]

Summary

Add lightweight usage tracking so users can see which commands/services they use and how often.

What to track

• Command used (claude, codex, pwsh, etc.) — count of sessions launched
• Total active time per session (start → exit)
• Daily/weekly session counts

Where to store

SQLite table in the existing output.db:

CREATE TABLE IF NOT EXISTS usage_stats (
    id          INTEGER PRIMARY KEY,
    command     TEXT    NOT NULL,
    date        TEXT    NOT NULL,  -- ISO date YYYY-MM-DD
    session_count INTEGER NOT NULL DEFAULT 0,
    total_seconds INTEGER NOT NULL DEFAULT 0,
    UNIQUE(command, date)
);

Where to surface

• New "Usage" section in Settings window, or a dedicated Usage tab
• Show a simple table: command | sessions | total time | last used
• Could also show a 7-day sparkline or bar chart per command

Implementation notes

• Increment session_count when a session starts (in LaunchSessionAsync)
• Accumulate total_seconds when the PTY exits (already have the exit hook in place)
• No external telemetry — all data stays local in the SQLite database

🤖 Generated with Claude Code

[AThraen]

https://code.claude.com/docs/en/hooks