Revert "CC-1984: Change uncomment code text (2nd try)"

[andy1li]

Reverts #171

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Note

Activates stage-1 match-and-exit behavior in all solution tracks and clarifies starter comments to say “Uncomment this block to pass the first stage.”

• Solutions:
  • Enable stage-1 behavior across languages (cpp, csharp, gleam, go, haskell, java, javascript, kotlin, odin, php, python, ruby, rust, typescript, zig):
    • Invoke match* and exit with 0/1 based on result.
    • Remove debug log lines where present.
    • Language-specific tweaks: enable actual matching in go (bytes.ContainsAny), odin (strings.contains), wire stdin read and exit flow in zig.
• Starters (compiled_starters/*, starter_templates/*):
  • Update instructional comments to: Uncomment this block to pass the first stage.

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[linear]

CC-1984 Change uncomment code text