-- SQLite graph_sessions indexes (table may already exist via GraphRepository::ensureSchema).

CREATE INDEX IF NOT EXISTS idx_graph_company_time ON graph_sessions (company_id, started_at_ms);
CREATE INDEX IF NOT EXISTS idx_graph_user_time ON graph_sessions (user_id, started_at_ms);
CREATE INDEX IF NOT EXISTS idx_graph_started ON graph_sessions (started_at_ms);
CREATE INDEX IF NOT EXISTS idx_graph_device ON graph_sessions (device_id);