chore: bump v1.8.0, add release-notify skill, optimize docs deploy (#992)

- Upgrade version to 1.8.0 in all package.json files
- Add cf-temp-mail-release-notify skill with MarkdownV2 Telegram posting
- Optimize docs_deploy.yml to auto-trigger on Tag Build CI completion
- Add v1.8.0 placeholder in CHANGELOG.md and CHANGELOG_EN.md

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

frontend/pnpm-lock.yaml

@@ -2654,8 +2654,8 @@ packages:
     engines: {node: '>=18.0.0', npm: '>=8.0.0'}
     hasBin: true
 
-  safe-array-concat@1.1.3:
-    resolution: {integrity: sha512-AURm5f0jYEOydBj7VQlVvDrjeFgthDdEF5H1dP+6mNpoXOMo1quQqJ4wvJDyRZ9+pO3kGWoOdmV08cSv2aJV6Q==}
+  safe-array-concat@1.1.4:
+    resolution: {integrity: sha512-wtZlHyOje6OZTGqAoaDKxFkgRtkF9CnHAVnCHKfuj200wAgL+bSJhdsCD2l0Qx/2ekEXjPWcyKkfGb5CPboslg==}
     engines: {node: '>=0.4'}
 
   safe-buffer@5.1.2:
@@ -5133,7 +5133,7 @@ snapshots:
       object.assign: 4.1.7
       own-keys: 1.0.1
       regexp.prototype.flags: 1.5.4
-      safe-array-concat: 1.1.3
+      safe-array-concat: 1.1.4
       safe-push-apply: 1.0.0
       safe-regex-test: 1.1.0
       set-proto: 1.0.0
@@ -5953,7 +5953,7 @@ snapshots:
       '@rollup/rollup-win32-x64-msvc': 4.60.2
       fsevents: 2.3.3
 
-  safe-array-concat@1.1.3:
+  safe-array-concat@1.1.4:
     dependencies:
       call-bind: 1.0.9
       call-bound: 1.0.4