fix(codemod): handle comments after blank lines in metadata

Comments following blank lines (# TODO: ...) were not being preserved.
Added handler for indented comments at start of scan position.

Result: 276/289 deep equivalent

Author: ronaldtse

lib/interscript/isc/codemod.rb

@@ -215,6 +215,12 @@ def convert_metadata_block
           elsif @scanner.scan(/\n[ \t]*\n/)
             # Blank line — preserve one newline
             @out << "\n"
+          elsif @scanner.scan(/([ \t]+)#[^\n]*/)
+            # Comment line (after newline was consumed by blank-line handler)
+            @out << "\n#{@scanner[1]}#"
+          elsif @scanner.scan(/#[^\n]*\n/)
+            # Comment at start of line
+            @out << "#\n"
           elsif @scanner.scan(/(?:\A|\n)([ \t]+)description[ \t]*:[ \t]*\|[ \t]*\n/)
             # Heredoc form: `description: |` followed by indented body.
             indent = @scanner[1]