ci: rebuild issue triage, PR labeler, and release notes

Combined issue-translator (#299) and issue-deduplicator (#298) into a
single issue-triage.yml with deterministic translate→dedup sequencing
and split inference/mutation permissions.

Rebuilt pr-labeler (#301) with graceful label creation and live title
refetch. Updated release.yml with --notes-start-tag for explicit range.

Addresses all Sol review findings. Original ideas credited to Wibias.

Co-authored-by: Wibias <37517432+Wibias@users.noreply.github.com>

Based-on: PR #301, PR #298, PR #299

Author: lidge-jun

.github/release.yml

@@ -0,0 +1,24 @@
+# GitHub release notes category config.
+# Maps PR labels (applied by pr-labeler.yml) to release note section headings.
+# Docs: https://docs.github.com/en/repositories/releasing-projects-on-github/automatically-generated-release-notes
+
+changelog:
+  exclude:
+    labels:
+      - skip-changelog
+  categories:
+    - title: New Features
+      labels:
+        - enhancement
+    - title: Bug Fixes
+      labels:
+        - bug
+    - title: Documentation
+      labels:
+        - documentation
+    - title: Chores
+      labels:
+        - chore
+    - title: Other Changes
+      labels:
+        - "*"