Daymark

Drive Daymark, the local study-planner service (weekly plan, active hours, Markdown task-file write-back, Google Calendar sync, desktop notifications) through its local HTTP API (port 4317 by default; the skills find the actual port from .data/runtime.json, PLANNER_API_PORT or .env). The `planner` skill is a router; the planner-* skills own one functional area each.