opt-in usage notes and a stats dashboard

Release builds ask in setup and Settings whether to send a short note when the app is opened and after each drive: the version, plus the Android version, phone model and cars people tick. Nothing runs in the background. Dev builds always send. The Cloudflare Worker in stats-worker/ stores the notes and serves a private dashboard with GitHub downloads alongside.

stats-worker/wrangler.toml

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+# Gearslip's opt-in usage notes. Deploy with `npx wrangler deploy` from this folder.
+# Setup, once:
+#   npx wrangler d1 create gearslip-stats          (paste the id it prints below)
+#   npx wrangler d1 execute gearslip-stats --remote --file schema.sql
+#   npx wrangler secret put SALT                    (any long random string; keep it)
+#   npx wrangler secret put DASHBOARD_KEY           (the key for the dashboard link)
+name = "gearslip-stats"
+main = "src/index.js"
+compatibility_date = "2026-10-01"
+
+[[d1_databases]]
+binding = "DB"
+database_name = "gearslip-stats"
+database_id = "201521a7-0b4a-4fff-ab11-d575b821528a"
+
+# The public repo whose release downloads the dashboard compares against. If GitHub starts
+# refusing (60 requests an hour without a token), add one: npx wrangler secret put GITHUB_TOKEN
+[vars]
+GITHUB_REPO = "Seb3thehacker/gearslip"
+
+# Save the download counts once a day, so the dashboard can show downloads per day.
+[triggers]
+crons = ["17 6 * * *"]