Campaign scheduling (start/end, solo send-from), scheduled NAS push + end sweep, views-by-hour chart

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

db.js

@@ -119,7 +119,11 @@ async function bootstrap() {
   await alterSafe('ALTER TABLE campaigns ADD COLUMN nas_ad_id INT NULL');          // syndicated NAS sponsorads.ID
   await alterSafe('ALTER TABLE campaigns ADD COLUMN nas_served INT NOT NULL DEFAULT 0'); // NAS impressions already reconciled into spend
   await alterSafe('ALTER TABLE campaigns ADD COLUMN expires BIGINT NULL'); // featured rotation end time
-  await alterSafe('ALTER TABLE campaigns ADD COLUMN starts BIGINT NULL');  // featured run start (booked day)
+  await alterSafe('ALTER TABLE campaigns ADD COLUMN starts BIGINT NULL');  // featured run start (booked day); any type: scheduled start
+  await q(`CREATE TABLE IF NOT EXISTS camp_hours (
+    campaign_id INT NOT NULL, day CHAR(10) NOT NULL, hour TINYINT NOT NULL, n INT NOT NULL DEFAULT 0,
+    PRIMARY KEY (campaign_id, day, hour)
+  ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4`); // on-site views per UTC hour, for the by-hour chart
   await alterSafe('ALTER TABLE campaigns ADD COLUMN house TINYINT NOT NULL DEFAULT 0'); // admin house ad: free, never charged
   await alterSafe('ALTER TABLE campaigns ADD COLUMN daily_cap INT NULL');      // optional credits/day pacing (banner + text)
   await alterSafe('ALTER TABLE campaigns ADD COLUMN day_spent INT NOT NULL DEFAULT 0');