ci: add Discord notifications for releases and pre-releases

Add automated Discord notifications for both stable releases and pre-releases:

- release-discord-notification.yml: Full announcements with role mentions for stable releases
- prerelease-discord-notification.yml: Testing-focused notifications without role pings

Features:
- Personalized "Cracking Shells" branding with MCP references
- Direct links to GitHub release pages for changelog access
- Role mentions (<@&1418053865818951721> --> ) for stable releases only
- Different visual styling (green vs orange) to distinguish release types
- Triggers on 'released' and 'prereleased' events respectively

Integrates with existing semantic-release workflow for automated release management.

Author: LittleCoinCoin

.github/workflows/prerelease-discord-notification.yml

@@ -0,0 +1,30 @@
+name: Discord Pre-release Notification
+
+on:
+  release:
+    types: [prereleased]
+
+jobs:
+  notify-discord:
+    runs-on: ubuntu-latest
+    if: github.event.release.target_commitish == 'main'
+    steps:
+      - name: Send Discord Pre-release Notification
+        uses: sarisia/actions-status-discord@v1
+        with:
+          webhook: ${{ secrets.DISCORD_HATCH_ANNOUNCEMENTS }}
+          nodetail: true
+          # No content field = no mention for pre-releases
+          title: "🧪 Hatch Pre-release Available for Testing"
+          description: |
+            **Version `${{ github.event.release.tag_name }}`** is now available for testing!
+            
+            ⚠️ **This is a pre-release** - expect potential bugs and breaking changes
+            🔬 Perfect for testing new features and providing feedback
+            📋 Click [here](${{ github.event.release.html_url }}) to view what's new and download
+            
+            Help us make *Hatch!* better by testing and reporting [issues](https://github.com/CrackingShells/Hatch/issues)! 🐛➡️✨
+          color: 0xff9500  # Orange color for pre-release
+          username: "Cracking Shells Pre-release Bot"
+          image: "https://github.com/CrackingShells/.github/blob/main/resources/images/hatch_icon_dark_bg_transparent.png"
+          avatar_url: "https://github.com/CrackingShells/.github/blob/main/resources/images/cs_core_dark_bg.png"

.github/workflows/release-discord-notification.yml

@@ -0,0 +1,29 @@
+name: Discord Release Notification
+
+on:
+  release:
+    types: [released]
+
+jobs:
+  notify-discord:
+    runs-on: ubuntu-latest
+    if: github.event.release.target_commitish == 'main'
+    steps:
+      - name: Send Discord Notification
+        uses: sarisia/actions-status-discord@v1
+        with:
+          webhook: ${{ secrets.DISCORD_HATCH_ANNOUNCEMENTS }}
+          nodetail: true
+          content: "<@&1418053865818951721>"
+          title: "🎉 New *Hatch!* Release Available!"
+          description: |
+            **Version `${{ github.event.release.tag_name }}`** has been released! 
+            
+            🚀 Get the latest features and improvements
+            📚 Click [here](${{ github.event.release.html_url }}) to view the changelog and download
+            
+            Happy MCP coding with *Hatch!* 🐣
+          color: 0x00ff88
+          username: "Cracking Shells Release Bot"
+          image: "https://github.com/CrackingShells/.github/blob/main/resources/images/hatch_icon_dark_bg_transparent.png"
+          avatar_url: "https://github.com/CrackingShells/.github/blob/main/resources/images/cs_core_dark_bg.png"