feat(cloudflare): new Cloudflare edge-containment integration

Cloudflare client API v4, 9 commands: list/get zones, block IP (firewall access
rule), list/delete access rules, list/create/delete DNS records. API-token
(Bearer) auth, stdlib-only.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

integrations/cloudflare/scripts/list_zones.py

@@ -0,0 +1,46 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+BASE = "https://api.cloudflare.com/client/v4"
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def request(method, path, cfg, body=None, params=None):
+    url = BASE + path
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Authorization": "Bearer " + str(cfg.get("api_token", "")), "Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=method)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        return json.loads(raw) if raw else {}
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+def main(cfg, inputs):
+    name = inputs.get("name")
+    return request("GET", "/zones", cfg, params={"name": name, "per_page": 50})
+
+
+_run(main)