[robtme]

Ran go fix against the go 1.26 toolchain and tidied what it left behind. No behaviour changes; the full test suite passes.

• The wait.Go closures in humafiber_v2_context_test.go need //nolint:testifylint. testifylint only skips assertions inside a literal go statement, and switching to require would call FailNow off the test goroutine. The latest testifylint (v1.6.4) still doesn't handle this.
• ModifyOperation drops the inline closure that was only there to capture the loop variable before Go 1.22. The n := chain copy is still needed so the closure doesn't call itself.
• The Ptr test helper is gone; new(expr) replaces it.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.72%. Comparing base (4035252) to head (a6efaaa).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1153      +/-   ##
==========================================
- Coverage   94.73%   94.72%   -0.01%     
==========================================
  Files          25       25              
  Lines        5200     5193       -7     
==========================================
- Hits         4926     4919       -7     
  Misses        269      269              
  Partials        5        5              

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