Initial campaign daily report

- index.html: table + trend chart, powered by Chart.js
- update.sh: fetches today's tab from source Google Sheet (falls back up to 7 days)
- schedule.conf: refresh every 24h
- data.json / history.json: initial snapshot from sheet 9/9 so the page has data before the first scheduled run

history.json

@@ -0,0 +1,22 @@
+[
+  {
+    "sheet_name": "9/9",
+    "fetched_at": "2026-09-10 08:19:23 UTC",
+    "row_count": 1130,
+    "totals": {
+      "Valid Click": 354404.0,
+      "PB Installs": 1597.0,
+      "Revenue": 554.84,
+      "Cost": 303.16,
+      "Gross Profit": 251.68,
+      "RT Reject Installs": 0.0,
+      "CVR": 0.004506,
+      "%Gross Profit": 0.453608,
+      "%RT Reject Install": 0.0
+    },
+    "status_counts": {
+      "Active": 738,
+      "Pause": 392
+    }
+  }
+]