refactor(dns): replace sys-dns-parent-hosts with sys-dns-wildcards; emit only *.parent wildcards from CURRENT_PLAY_DOMAINS_ALL

Rename filter parent_build_records→wildcard_records; create only wildcard (*.parent) A/AAAA records (no base/apex); switch to CURRENT_PLAY_DOMAINS_ALL; update vars to SYN_DNS_WILDCARD_RECORDS; adjust role/task names, defaults, and docs; add unittest expecting *.a.b from www.a.b.example.com. See: https://chatgpt.com/share/68c35dc1-7170-800f-8fbe-772e61780597

roles/sys-svc-dns/README.md

@@ -3,7 +3,7 @@
 Bootstrap and maintain **DNS prerequisites** for your web stack on Cloudflare.
 
 This role validates credentials and (by default) ensures:
-- **Parent host A/AAAA records** (incl. the **apex** SLD.TLD) via `sys-dns-parent-hosts`
+- **Wildcard A/AAAA records** (`*.parent`) for parent hosts via `sys-dns-wildcards` (no base/apex records)
 - *(Optional)* **CAA** records for Let’s Encrypt (kept as a commented block you can re-enable)
 
 Runs **once per play** and is safe to include in stacks that roll out many domains.
@@ -13,9 +13,9 @@ Runs **once per play** and is safe to include in stacks that roll out many domai
 ## What it does
 
 1. **Validate `CLOUDFLARE_API_TOKEN`** is present (early fail if missing).
-2. **Ensure parent DNS exists** (apex + “parent” FQDNs derived from children):
-   - Delegates to [`sys-dns-parent-hosts`](../sys-dns-parent-hosts/README.md)
-   - Creates A (and AAAA if enabled upstream) on the Cloudflare zone, optionally proxied.
+2. **Ensure wildcard parent DNS exists** (`*.parent` derived from children):
+   - Delegates to [`sys-dns-wildcards`](../sys-dns-wildcards/README.md)
+   - Creates `A` (and `AAAA` if enabled) wildcard records on the Cloudflare zone, optionally proxied. 
 3. *(Optional)* **CAA records** for all base SLDs (commented in the tasks; enable if you want CAA managed here).
 
 > Parent hosts example: