[CFX-5560] chore: new task delint to fix lints

[ajalon1]

RATIONALE

I want a way to fix as many lint issues as possible. lint does some already, but I know golangci-lint can fix issues, so let's do that too.

Let's actually do that in a new delint task, and leave lint as is.

CHANGES

task delint
golangci-lint run --fix
simplify AGENTS.md
update dev docs

PR Automation

Comment-Commands: Trigger CI by commenting on the PR:

• /trigger-smoke-test or /trigger-test-smoke - Run smoke tests
• /trigger-install-test or /trigger-test-install - Run installation tests

Labels: Apply labels to trigger workflows:

• run-smoke-tests or go - Run smoke tests on demand (only works for non-forked PRs)

Important

For Forked PRs: If you're an external contributor, the run-smoke-tests label won't work. A maintainer must manually trigger the "Fork PR Smoke Tests" workflow from the Actions tab, providing your PR number. Please comment requesting a maintainer review if you need smoke tests to run.

---

Note

Low Risk
Low risk: changes are limited to developer tooling/docs and do not affect runtime CLI behavior. Main impact is local/CI workflows now using task lint for non-modifying checks and task delint for auto-fixes.

Overview
Splits linting into check-only task lint and auto-fixing task delint, making lint non-modifying (uses go mod tidy -diff, gofumpt -d, golangci-lint run, and goreleaser check) while delint runs formatting/dependency cleanup and golangci-lint run --fix.

Updates dev-init to depend on delint and refreshes AGENTS.md to document the new task semantics and recommended workflow (run delint to fix, then lint to verify).

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[c-h-russell-walker]

Very nice - thank you for this.

Question though - won't linting in CI pass even if there's then unstaged changes?

Maybe make an additional task command called like delint or lint-fix ?

[ajalon1]

Great point. I was wondering why we didn't have a lint-fix or delint.

Let me pull this back into draft and add a task delint, and then update the lint workflow and docs.

[c-h-russell-walker]

Awesome.