chore: upgrade golangci-lint to 2.12.2

[curfew-marathon]

Summary

Upgrades golangci-lint from v2.10.1 → v2.12.2 and resolves the new findings the upgrade surfaces, so CI stays green.

Changes

Version bump (local + CI kept in lockstep):

• .github/workflows/main.yaml: golangci-lint-action linter version: v2.10.1 → v2.12.2 (the action pin itself, @ba0d7d2… # v9.3.0, is already latest — unchanged).
• Makefile: pin the golangci-lint install to @v2.12.2 (was @latest), so local make lint matches CI exactly.

New findings cleared (all pre-existing; surfaced only by the newer linter):

• goconst (50) — disabled repo-wide in .golangci.yaml. All 50 were repeated string literals in *_test.go fixtures, where extracting shared constants tends to hurt table-test readability more than it helps.
• nolintlint (4) — removed 4 //nolint directives that v2.12.2 correctly reports as unused (the linters they suppressed no longer fire on those lines):
  • internal/fga/fga.go: //nolint:gosec on APIToken and ClientSecret — verified gosec no longer flags these fields.
  • internal/build/build.go: //nolint:revive on the package clause.
  • internal/utils/context.go: //nolint:revive on the package clause.

Verification

golangci-lint run -c .golangci.yaml ./... at v2.12.2 → 0 issues. The version bump and the source cleanups are intentionally in one commit: the removed directives are still live at v2.10.1, so the two are inseparable for a green CI.

[coderabbitai]

Walkthrough

The PR updates golangci-lint to v2.12.2 in CI and local installation, disables goconst, and removes selected revive and gosec suppression comments.

Changes

Lint configuration alignment

Layer / File(s)	Summary
Pin and configure lint tooling .github/workflows/main.yaml, .golangci.yaml, Makefile	CI and local installation use golangci-lint v2.12.2, and goconst is disabled.
Remove lint suppressions internal/build/build.go, internal/fga/fga.go, internal/utils/context.go	Selected revive and gosec suppression comments are removed without changing the associated declarations.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: copilot

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: upgrading golangci-lint to 2.12.2.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/upgrade-golangci-lint-2.12.2

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[Copilot]

Pull request overview

Updates the repository’s linting toolchain to golangci-lint v2.12.2 (CI + local) and adjusts configuration/source annotations so the upgraded linter remains clean and CI stays green.

Changes:

• Bump CI golangci-lint version to v2.12.2 and pin the local make lint installer to the same version.
• Disable goconst at the repo level to avoid new findings introduced by the upgrade.
• Remove now-unused //nolint directives surfaced by nolintlint.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Makefile	Pins local go install of golangci-lint to v2.12.2 to match CI.
internal/utils/context.go	Removes an unused //nolint:revive directive on the package clause.
internal/fga/fga.go	Removes unused //nolint:gosec suppressions on config fields.
internal/build/build.go	Removes an unused //nolint:revive directive near the package clause.
.golangci.yaml	Adds goconst to the disabled linters list under default: all.
.github/workflows/main.yaml	Updates golangci-lint-action linter version to v2.12.2.

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