Code Quality Improvements in 1.1.1

• Fixed all 44 PHP files by removing the blank line after <?php so the copyright header starts on line 2. This resolves ~70 prechecker errors.
• Fixed PHPDoc incomplete parameter lists.
• Fixed test directory structure by moving test files from tests/classes/* to tests/* directories to match Moodle's expected structure.
• Replaced error_log() with debugging() in badge_selection.php to comply with Moodle coding standards.
• Fixed MOODLE_INTERNAL checks. Added MOODLE_INTERNAL check to api_client.php (has require_once side effect). Removed unnecessary MOODLE_INTERNAL checks from class-only files
• Replaced elseif with else if (two words) in all files to comply with Moodle coding standards
• Fixed line length violations by breaking long lines to stay under Moodle's 132 character limit
• Fixed array trailing commas by adding trailing commas to all multi-line arrays to comply with Moodle coding standards
• Fixed minor code quality issues:
  • Replaced Perl-style comment with standard comment syntax
  • Removed commented-out code comments
  • Fixed comment capitalization
  • Removed duplicate empty lines
  • Removed trailing whitespace from strings
  • Replaced long list syntax with array destructuring
  • Sorted interfaces alphabetically
• Removed empty IF/CATCH statements.
• Sorted language file string keys alphabetically in lang/en/local_navigatr.php to comply with Moodle coding standards.
• Added missing @template section to templates/course/course_settings.mustache with template context variable documentation.
• Fixed test class issues: Added final keyword to all test classes, added : void return types to all test methods, and added @covers annotations for test coverage.
• Fixed inline comment formatting by adding punctuation (periods) to all inline comments that were missing it across 45 PHP files.
• Fixed opening brace placement by moving opening braces to the same line as their declarations across 35 PHP files.
• Added missing language strings.
• Added the correct header and copyright/author notes to the files which were missing.