fix: decompress compress_only amount check

[ananas-block]

Summary by CodeRabbit

• Bug Fixes
  • Enhanced token decompression validation to ensure amounts are consistently verified across all transaction paths, improving operation reliability and preventing potential amount mismatches.

[coderabbitai]

📝 Walkthrough

Walkthrough

The decompression validation logic in the compressed token program has been simplified by removing a conditional check. Amount validation is now performed unconditionally for all decompression operations, ensuring compression_amount always equals input_amount regardless of the destination path.

Changes

Cohort / File(s)	Summary
Decompression Validation programs/compressed-token/program/src/compressed_token/transfer2/compression/ctoken/decompress.rs	Amount validation made unconditional; removed path-specific restriction (ATA or compress_to_pubkey). Compression_amount now always validated against input_amount with DecompressAmountMismatch error on mismatch.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Suggested reviewers

• SwenSchaeferjohann

Poem

✨ No more conditional dancing,
Validation stands firm and true,
Every token counted fairly,
Amounts must align—no matter what path they pursue! 🎯

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'fix: decompress compress_only amount check' directly addresses the main change: making amount validation unconditional in the decompress function, specifically fixing the compress_only code path.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 70.00%.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch jorrit/fix-decompress-compress-only-amount-check

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}