Switch deploy tooling to Gitea (no GitHub)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

README.md

@@ -3,11 +3,32 @@
 Static single-file WattHound demo (ABC Electrical) served at
 https://watthound-demo.sculpt7.com
 
-Deployed via Coolify (project `watthound-demo`) using the Dockerfile build pack:
-nginx:alpine serving `index.html`.
+## Hosting (NO GitHub)
 
-## Update the live demo
-1. Replace `index.html` with the new build.
-2. `git commit -am "update demo" && git push`
-3. Redeploy: Coolify auto-deploy on push (if webhook enabled), or trigger the
-   Coolify deploy for app `watthound-demo`.
+- **Git host:** `gitea.sculpt.co.nz/macjones/watthound-demo` (Mac's own self-hosted
+  Gitea, public repo). GitHub is not involved anywhere.
+- **Runtime:** Coolify app `watthound-demo-gitea`
+  (uuid `hd9qde2w6xrmnippah409jgt`) builds the `Dockerfile`
+  (nginx:alpine serving `index.html`) straight from Gitea `main`.
+
+## Update the live demo (repeatable, no GitHub)
+
+```
+./deploy.sh                      # commit ./index.html, push to Gitea, redeploy, verify
+./deploy.sh /path/to/new/index.html   # drop in a new build first, then the above
+```
+
+That script: commits `index.html`, `git push gitea main`, triggers the Coolify
+deploy via API, then polls the FQDN until it serves the new byte size.
+
+### Manual equivalent
+
+```
+git add index.html && git commit -m "update demo"
+git push gitea main
+# then trigger Coolify (token from myPKA .env, never printed):
+BASE="$(grep '^COOLIFY_URL=' /Users/macjones/Projects/watthound/mypka/.env | cut -d= -f2-)/api/v1"
+TOKEN="$(grep '^COOLIFY_API_TOKEN=' /Users/macjones/Projects/watthound/mypka/.env | cut -d= -f2-)"
+curl -sS -X POST -H "Authorization: Bearer $TOKEN" \
+  "$BASE/deploy?uuid=hd9qde2w6xrmnippah409jgt&force=true"
+```