Fix regex pattern to match AWK output format

The Python regex was expecting leading whitespace before class names,
but the AWK script outputs class names at the start of lines without
leading whitespace.

Changed regex from:
  r'^\s+([\w\\]+)\s+Methods:...'
To:
  r'^([\w\\]+)\s+Methods:...'

This allows the parser to correctly extract coverage data from lines like:
  "Progress_Planner\Activity   Methods:  55.56% ( 5/ 9)   Lines:  91.92% ( 91/ 99)"

With base coverage at 0%, all files with coverage should now appear as
"new files" in the collapsible details section of the PR comment.

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

Co-Authored-By: Claude <noreply@anthropic.com>

Author: aristath

.github/workflows/code-coverage.yml

@@ -199,8 +199,8 @@ jobs:
 
           def parse_coverage_line(line):
               """Parse a coverage line to extract class name and line coverage percentage."""
-              # Example line: "  Progress_Planner\Activity  Methods: 55.56% ( 5/ 9)   Lines: 91.92% ( 91/ 99)"
-              match = re.search(r'^\s+([\w\\]+)\s+Methods:\s+[\d.]+%.*Lines:\s+([\d.]+)%\s+\(\s*(\d+)/\s*(\d+)\)', line)
+              # Example line: "Progress_Planner\Activity   Methods:  55.56% ( 5/ 9)   Lines:  91.92% ( 91/ 99)"
+              match = re.search(r'^([\w\\]+)\s+Methods:\s+[\d.]+%.*Lines:\s+([\d.]+)%\s+\(\s*(\d+)/\s*(\d+)\)', line)
               if match:
                   class_name = match.group(1)
                   line_percent = float(match.group(2))