fix: improve release script reliability and messaging

Based on issues encountered during v0.1.35 release:

1. Matrix announcement improvements:
   - Remove emoji formatting that caused matrix-commander to hang
   - Use room ID instead of alias for reliability
   - Add 30-second timeout to prevent hanging

2. Better auto-merge handling:
   - Add clear messaging that manual merge is an option
   - Improve progress updates with elapsed time and check counts
   - Show "All checks passed, waiting for auto-merge" when ready

3. Script continuation after manual PR merge:
   - Script already detects manual merges correctly
   - Added messaging to inform users they can manually merge

These changes address:
- Matrix emoji formatting causing 12+ minute hangs
- Unclear messaging during auto-merge delays
- Users not knowing they can manually merge without breaking the flow

[AI-assisted debugging and comment]

Author: sanity

scripts/release.sh

@@ -449,10 +449,12 @@ Generated by: \`scripts/release.sh\`" \
     echo -n "  Enabling auto-merge... "
     gh pr merge "$pr_number" --squash --auto >/dev/null 2>&1
     echo "✓"
-    
+
     echo "  ⏳ Waiting for GitHub CI and auto-merge..."
     echo "     You can monitor at: https://github.com/freenet/freenet-core/pull/$pr_number"
-    
+    echo "     💡 Note: You can manually merge the PR if needed - the script will detect it and continue"
+    echo
+
     # Monitor CI with enhanced failure reporting
     local wait_time=30
     local total_wait=0
@@ -515,15 +517,16 @@ Generated by: \`scripts/release.sh\`" \
                 else
                     # Show status for pending/in-progress checks
                     pending_checks=$(echo "$checks_output" | grep -E "pending|in_progress" | wc -l)
+                    passed_checks=$(echo "$checks_output" | grep -E "pass" | wc -l)
                     if [[ $pending_checks -gt 0 ]]; then
-                        echo "  ⏳ Waiting... ($pending_checks checks in progress)"
+                        echo "  ⏳ Waiting... ($passed_checks checks passed, $pending_checks in progress, ${total_wait}s elapsed)"
                     else
-                        echo "  ⏳ Waiting for auto-merge..."
+                        echo "  ⏳ All checks passed, waiting for auto-merge... (${total_wait}s elapsed)"
                     fi
                 fi
                 ;;
         esac
-        
+
         sleep $wait_time
         total_wait=$((total_wait + wait_time))
     done
@@ -782,15 +785,15 @@ announce_to_matrix() {
     local feature_count=$(echo "$release_notes" | grep -c "^- \*\*#.*Features" || echo "0")
 
     # Extract key highlights (first 3 fixes or features)
-    local highlights=$(echo "$release_notes" | grep "^- \*\*#" | head -3 | sed 's/^- /  • /')
+    local highlights=$(echo "$release_notes" | grep "^- \*\*#" | head -3 | sed 's/^- /  - /')
 
-    local announcement="🎉 **Freenet v$VERSION Released!**
+    local announcement="Freenet v$VERSION Released!
 
-📦 Published to crates.io:
-  • freenet v$VERSION
-  • fdev v$FDEV_VERSION
+Published to crates.io:
+  - freenet v$VERSION
+  - fdev v$FDEV_VERSION
 
-🔗 Release: https://github.com/freenet/freenet-core/releases/tag/v$VERSION
+Release: https://github.com/freenet/freenet-core/releases/tag/v$VERSION
 
 Key highlights:
 $highlights
@@ -800,7 +803,8 @@ Full changelog available at the release link above.
 [AI-assisted release announcement]"
 
     echo -n "  Sending announcement to Matrix... "
-    if matrix-commander -r '#freenet-locutus:matrix.org' -m "$announcement" &>/dev/null; then
+    # Use room ID instead of alias for reliability, add timeout
+    if timeout 30 matrix-commander -r '!ygHfYcXtXmivTbOwjX:matrix.org' -m "$announcement" &>/dev/null; then
         echo "✓"
     else
         echo "✗"