🛡️ Sentinel: Enforce MAX_VERSION_LENGTH to prevent DoS

[google-labs-jules]

🛡️ Sentinel: [MEDIUM] Fix input length limits (DoS risk)

🚨 Severity: MEDIUM
💡 Vulnerability: Excessively long version strings could cause performance issues or memory exhaustion during parsing/comparison.
🎯 Impact: Denial of Service (DoS) if user input is uncontrolled.
🔧 Fix: Enforced a MAX_VERSION_LENGTH of 256 characters. Inputs exceeding this limit immediately return NaN.
✅ Verification: Added a test case in src/security.test.ts with a 300+ character string. Verified that comparisons return false (fail-closed).

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PR created automatically by Jules for task 16523819671176676093 started by @srod

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Summary by cubic

Enforces a 256-character max length for version strings to prevent DoS from oversized inputs. Strings over the limit return NaN so all boolean checks fail closed.

• Bug Fixes
  • Added MAX_VERSION_LENGTH (256) and validation in compareTo to reject overly long inputs.
  • Added a regression test using a 300+ char version to confirm isAtLeast/isBelow return false.

^{Written for commit 93256d6. Summary will update on new commits.}

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (0c22e76) to head (93256d6).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #802   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines           46        49    +3     
  Branches        16        17    +1     
=========================================
+ Hits            46        49    +3     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

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[srod]

Superseded by #826 - closing duplicate bot-generated PR

[google-labs-jules]

Superseded by #826 - closing duplicate bot-generated PR

Understood. Acknowledging that this work is now obsolete and stopping work on this task.