chore(deps): update dependency go

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	Pending
go		minor	1.25.5 → 1.26.0	1.26.1
go (source)	toolchain	minor	1.25.5 → 1.26.1

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Release Notes

golang/go (go)

v1.26.0

Compare Source

v1.25.8

Compare Source

v1.25.7

Compare Source

v1.25.6

Compare Source

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

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• If you want to rebase/retry this PR, check this box

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This PR was generated by Mend Renovate. View the repository job log.

[github-actions]

Renovate PR Review Results

⚖️ Safety Assessment: ✅ Safe

🔍 Release Content Analysis

Go Version Changes:

• mise.toml: Go 1.25.5 → 1.26.0
• go.mod toolchain: go1.25.5 → go1.26.1

Go 1.26 Major Changes:

• New Green Tea Garbage Collector: Now default (10-40% GC overhead reduction, ~10% additional gains on modern CPUs)
• Language Enhancements: Enhanced new() function with initial value expressions, self-referential generic types support
• Performance Improvements: ~30% cgo call overhead reduction, improved stack allocations
• Security: Heap base randomization on 64-bit platforms by default

Breaking Changes Analysis:

• Crypto Random Parameter Changes: Functions like crypto/ecdsa.GenerateKey(), crypto/rsa.GenerateKey() now ignore the random parameter (always use secure randomness)

  • ✅ Impact: None - Project does not use any crypto packages

• net/url.Parse() Strictness: Now rejects malformed URLs with colons in host (e.g., http://::1/)

  • ✅ Impact: None - Project does not use net/url package

• Deprecated Features (removal in Go 1.27):

  • cmd/doc and go tool doc → Use go doc instead
  • Various GODEBUG settings for TLS and timers
  • ✅ Impact: None - Project does not use deprecated features

Platform Changes:

• 32-bit windows/arm port removed
• macOS 12 Monterey support ending (requires macOS 13+ in Go 1.27)
• ✅ Impact: None - GoReleaser builds for standard platforms (linux, darwin, windows on amd64/arm64)

🎯 Impact Scope Investigation

Build Verification:

• ✅ Project builds successfully with Go 1.26.1
• ✅ All tests pass: 5 test packages executed without errors
• ✅ Built binary executes correctly (gat --version works)
• ✅ go mod verify confirms all modules integrity

Dependency Analysis:

• ✅ No dependency conflicts detected
• ✅ All major dependencies (Chroma, Glamour, Cobra, Sixel) compatible
• ✅ Some dependencies have newer versions available (unrelated to Go update)

Code Impact:

• ✅ No crypto package usage detected
• ✅ No net/url usage detected
• ✅ No deprecated GODEBUG settings found
• ✅ No platform-specific build tags that would conflict
• ✅ No usage of deprecated go tool doc commands

CI/CD Compatibility:

• ✅ Uses mise-action which reads from mise.toml (will use Go 1.26.0)
• ✅ go.mod toolchain directive updated to 1.26.1 (CI will use this)
• ✅ GoReleaser configuration compatible (no Go version-specific settings)
• ✅ Build completion scripts work correctly

Performance Benefits Expected:

• 10-40% reduction in GC overhead from new Green Tea GC
• ~30% faster cgo calls (beneficial for dependencies using cgo)
• Improved memory efficiency from better stack allocations

💡 Recommended Actions

1. Merge Immediately - This PR is safe to merge

   • All tests pass with Go 1.26.1
   • No breaking changes affect this codebase
   • No code modifications required
   • Backward compatibility fully maintained

2. Monitor CI Pipeline - After merge, verify:

   • All CI jobs (test, build, lint) pass successfully
   • GoReleaser snapshot builds complete without errors
   • No unexpected runtime behavior in production

3. Future Consideration (Optional):

   • Update to Go 1.26.1 in mise.toml when available (currently shows pending in PR)
   • Consider updating go.mod directive from go 1.24.0 to go 1.25.0 per new Go 1.26 defaults (not required)

🔗 Reference Links

• Go 1.26 Release Notes
• Go 1.26 GitHub Release
• Go Download Page
• Renovate PR #255

Generated by koki-develop/claude-renovate-review

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The following tool executions that Claude Code attempted were blocked due to insufficient permissions.
Consider adding them to allowed_tools if needed.

Run #22811481092 - 1 tool denied

Tool	Input
WebSearch	{"query":"Go 1.26 release notes breaking changes migration guide 2026"}

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