Fix GitHub Actions output for multi-line strings

- Updated GitHub Actions output syntax to properly handle multi-line strings
- Implemented EOF delimiter approach for all outputs to safely handle any feedback that contains newlines
- Fixed both PR review comment handlers to ensure consistent handling of multi-line user feedback

This prevents the 'Unable to process file command output' errors in GitHub Actions when user provides multi-line feedback.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: paul-fracture

.github/workflows/claude-full.yml

@@ -221,11 +221,26 @@ jobs:
           FILE_PATH="${{ github.event.comment.path }}"
           LINE="${{ github.event.comment.line }}"
           
-          echo "number=$PR_NUMBER" >> $GITHUB_OUTPUT
-          echo "feedback=$FEEDBACK" >> $GITHUB_OUTPUT
-          echo "comment_id=$COMMENT_ID" >> $GITHUB_OUTPUT
-          echo "file_path=$FILE_PATH" >> $GITHUB_OUTPUT
-          echo "line=$LINE" >> $GITHUB_OUTPUT
+          # Use proper multi-line string handling for GitHub Actions outputs
+          echo "number<<EOF" >> $GITHUB_OUTPUT
+          echo "$PR_NUMBER" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          
+          echo "feedback<<EOF" >> $GITHUB_OUTPUT
+          echo "$FEEDBACK" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          
+          echo "comment_id<<EOF" >> $GITHUB_OUTPUT
+          echo "$COMMENT_ID" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          
+          echo "file_path<<EOF" >> $GITHUB_OUTPUT
+          echo "$FILE_PATH" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          
+          echo "line<<EOF" >> $GITHUB_OUTPUT
+          echo "$LINE" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
       
       - name: Process with Claude Code for code review comment
         uses: fractureinc/[email protected]
@@ -261,11 +276,26 @@ jobs:
           FILE_PATH="${{ github.event.comment.path }}"
           LINE="${{ github.event.comment.line }}"
           
-          echo "number=$PR_NUMBER" >> $GITHUB_OUTPUT
-          echo "feedback=$FEEDBACK" >> $GITHUB_OUTPUT
-          echo "comment_id=$COMMENT_ID" >> $GITHUB_OUTPUT
-          echo "file_path=$FILE_PATH" >> $GITHUB_OUTPUT
-          echo "line=$LINE" >> $GITHUB_OUTPUT
+          # Use proper multi-line string handling for GitHub Actions outputs
+          echo "number<<EOF" >> $GITHUB_OUTPUT
+          echo "$PR_NUMBER" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          
+          echo "feedback<<EOF" >> $GITHUB_OUTPUT
+          echo "$FEEDBACK" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          
+          echo "comment_id<<EOF" >> $GITHUB_OUTPUT
+          echo "$COMMENT_ID" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          
+          echo "file_path<<EOF" >> $GITHUB_OUTPUT
+          echo "$FILE_PATH" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          
+          echo "line<<EOF" >> $GITHUB_OUTPUT
+          echo "$LINE" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
       
       - name: Process with Claude Code Suggestions for code review
         uses: fractureinc/[email protected]