chainage panel update

db/init.sql

@@ -295,6 +295,9 @@ CREATE INDEX IF NOT EXISTS idx_chainage_points_project ON chainage_points(projec
 -- be replaced on the next quick run regardless of the (freely editable) note text.
 ALTER TABLE chainage_points ADD COLUMN IF NOT EXISTS origin TEXT NOT NULL DEFAULT '';
 UPDATE chainage_points SET origin='quick' WHERE origin='' AND note LIKE 'quick:%';
+-- The full result of the last recompute (route/spans/per-video/warnings JSON) so
+-- any admin who signs in later sees the existing computed data, not a recompute ask.
+ALTER TABLE chainage_calibrations ADD COLUMN IF NOT EXISTS summary JSONB;
 ALTER TABLE videos ADD COLUMN IF NOT EXISTS chainage_start_m    DOUBLE PRECISION;
 ALTER TABLE videos ADD COLUMN IF NOT EXISTS chainage_end_m      DOUBLE PRECISION;
 ALTER TABLE videos ADD COLUMN IF NOT EXISTS sr_chainage_start_m DOUBLE PRECISION;