-- Migration 003 — Phase 7. Daily usage rollup (AGENTS.md §7 retention).
--
-- telemetry holds the per-day detail: one row per (device, day, app, domain).
-- This table is the daily rollup the dashboard reads for a week and that is
-- kept long. Apps and domains are summed into separate columns on purpose: a
-- report can carry both for the same session, so adding them together would
-- double-count the time.
--
-- The rollup is written whenever a telemetry report lands and can be rebuilt
-- from telemetry at any time (store.RebuildRollups), so it is derived data,
-- never a second source of truth.

CREATE TABLE IF NOT EXISTS telemetry_daily (
    device_id      INTEGER NOT NULL REFERENCES devices(id),
    day            TEXT    NOT NULL,          -- YYYY-MM-DD, local day
    app_seconds    INTEGER NOT NULL DEFAULT 0,
    domain_seconds INTEGER NOT NULL DEFAULT 0,
    app_count      INTEGER NOT NULL DEFAULT 0,
    domain_count   INTEGER NOT NULL DEFAULT 0,
    updated_at     TEXT    NOT NULL DEFAULT (datetime('now')),
    PRIMARY KEY (device_id, day)
);

CREATE INDEX IF NOT EXISTS idx_telemetry_daily_day ON telemetry_daily(day);