Prepare repo for open source

.github/ISSUE_TEMPLATE/bug_report.md

@@ -25,3 +25,7 @@ labels: bug
 **Logs / artifacts**
 <!-- Relevant output, the validation report, or a run dir. For a "perfect score",
      check it isn't a blocked/degenerate capture (capture.pollution / capture.blocked). -->
+
+**Responsible disclosure**
+<!-- Do not include secrets, cookies, private URLs, proprietary captures, or security
+     vulnerabilities here. Report vulnerabilities privately via SECURITY.md. -->

.github/ISSUE_TEMPLATE/config.yml

@@ -3,3 +3,6 @@ contact_links:
   - name: Security vulnerability
     url: https://github.com/ion-design/ditto.site/security/advisories/new
     about: Please report security issues privately — do not open a public issue.
+  - name: Support policy
+    url: https://github.com/ion-design/ditto.site/blob/main/SUPPORT.md
+    about: Read what information to include and what support expectations apply.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -17,3 +17,7 @@ labels: enhancement
 **Scope notes**
 <!-- Does this touch the deterministic compiler (clone fidelity/gates) or only the
      service layer? Anything that affects clone output should stay deterministic. -->
+
+**Responsible-use impact**
+<!-- Note any safeguards needed for public clone endpoints, third-party captures,
+     brand/trademark confusion, or abuse prevention. -->