chore(lint): migrate to flint v2 binary

.editorconfig

@@ -0,0 +1,4 @@
+root = true
+
+[*.md]
+max_line_length = 120

.github/config/flint.toml

@@ -0,0 +1,9 @@
+[settings]
+exclude = [
+  "CHANGELOG.md",
+  "yaml/testdata/**",
+  "yaml/docker-compose-docker-lgtm-template.yml",
+]
+
+[checks.renovate-deps]
+exclude_managers = ["github-actions", "github-runners"]

.github/renovate-tracked-deps.json

@@ -67,15 +67,21 @@
   },
   "mise.toml": {
     "mise": [
+      "actionlint",
+      "editorconfig-checker",
+      "github:grafana/flint",
       "go",
       "golangci-lint",
+      "hadolint",
       "lychee",
       "node",
-      "npm:renovate"
-    ],
-    "regex": [
-      "ghcr.io/super-linter/super-linter",
-      "grafana/flint"
+      "npm:@biomejs/biome",
+      "npm:markdownlint-cli2",
+      "npm:prettier",
+      "npm:renovate",
+      "pipx:codespell",
+      "shellcheck",
+      "shfmt"
     ]
   },
   "yaml/testdata/docker-compose-addition.yaml": {

.github/renovate.json5

@@ -3,7 +3,7 @@
   extends: [
     "config:best-practices",
     "config:recommended",
-    "github>grafana/flint",
+    "github>grafana/flint#v0.20.3",
   ],
   automerge: true,
 }

.github/workflows/build.yml

@@ -1,12 +1,12 @@
 ---
-name: Build, Lint, and Test
+name: Build and Test
 
 on: [pull_request]
 
 permissions: {}
 
 jobs:
-  test:
+  build:
     runs-on: ubuntu-24.04
     steps:
       - name: Check out
@@ -17,5 +17,7 @@ jobs:
         with:
           version: v2026.4.15
           sha256: c55befc52e5694f388b927ef304362ca7b9e919d97d43c342fca57f2eccea255
+      - name: Build
+        run: mise run build
       - name: Run tests
-        run: mise run check
+        run: mise run test

.markdownlint.yml

@@ -0,0 +1,2 @@
+# Line length is enforced by editorconfig-checker via .editorconfig
+MD013: false

AGENTS.md

@@ -27,28 +27,25 @@ mise run integration-test
 
 # Run end-to-end tests
 mise run e2e-test
-
-# Run all checks (lint + test + format check)
-mise run check
 ```
 
 ## Linting
 
 ```bash
-# Auto-fix and verify (recommended dev workflow)
-mise run fix
+# Auto-fix lint issues (recommended dev workflow)
+mise run lint:fix
 
 # Verify only (same command used in CI)
 mise run lint
 
-# Go linting only
-mise run lint:go
-
-# Format Go code
-mise run fmt
+# Run all checks
+mise run check
 ```
 
-Lint tasks are sourced from [grafana/flint](https://github.com/grafana/flint).
+Linting is handled by [flint v2](https://github.com/grafana/flint).
+Flint runs shellcheck, shfmt, actionlint, hadolint, markdownlint, prettier,
+codespell, editorconfig, lychee, renovate-deps, and gofmt. EditorConfig rules
+live in `.editorconfig`.
 
 ## Architecture
 
@@ -103,6 +100,6 @@ Key flags: `-timeout` (default 30s), `-lgtm-version` (default "latest"), `-manua
 
 ## CI
 
-- Build + lint + test on PRs (`mise run check`)
+- Lint on PRs (`mise run lint`), build on PRs (`mise run build`), tests on PRs (`mise run test`)
 - Integration tests and e2e tests in separate workflows
-- Linting via flint (super-linter, lychee, golangci-lint)
+- Linting via flint v2

biome.jsonc

@@ -0,0 +1,7 @@
+{
+  // Keep JSON formatting aligned with the repo's two-space style.
+  "formatter": {
+    "indentStyle": "space",
+    "indentWidth": 2
+  }
+}

mise.toml

@@ -1,44 +1,32 @@
 [tools]
 go = "1.26.2"
+node = "24.15.0"
+
+# Linters
+actionlint = "1.7.10"
+editorconfig-checker = "v3.6.0"
+"github:grafana/flint" = "0.20.3"
 golangci-lint = "2.11.4"
+hadolint = "v2.14.0"
 lychee = "0.22.0"
-node = "24.15.0"
+"npm:@biomejs/biome" = "2.4.12"
+"npm:markdownlint-cli2" = "0.17.2"
+"npm:prettier" = "3.8.1"
 "npm:renovate" = "43.127.1"
+"pipx:codespell" = "2.4.1"
+shellcheck = "v0.11.0"
+shfmt = "v3.12.0"
 
 [env]
-RENOVATE_TRACKED_DEPS_EXCLUDE="github-actions,github-runners"
-# renovate: datasource=docker depName=ghcr.io/super-linter/super-linter
-SUPER_LINTER_VERSION="v8.4.0@sha256:c5e3307932203ff9e1e8acfe7e92e894add6266605b5d7fb525fb371a59a26f4"
+FLINT_CONFIG_DIR = ".github/config"
 
-# Shared lint tasks from flint (https://github.com/grafana/flint)
-[tasks."lint:super-linter"]
-description = "Run Super-Linter on the repository"
-file = "https://raw.githubusercontent.com/grafana/flint/5af56d473d2f82ec5af0fad36b054bde2bd2f8cf/tasks/lint/super-linter.sh" # v0.20.1
-[tasks."lint:links"]
-description = "Check for broken links in changed files + all local links"
-file = "https://raw.githubusercontent.com/grafana/flint/5af56d473d2f82ec5af0fad36b054bde2bd2f8cf/tasks/lint/links.sh" # v0.20.1
-[tasks."lint:renovate-deps"]
-description = "Verify renovate-tracked-deps.json is up to date"
-file = "https://raw.githubusercontent.com/grafana/flint/5af56d473d2f82ec5af0fad36b054bde2bd2f8cf/tasks/lint/renovate-deps.py" # v0.20.1
-
-[tasks."setup:native-lint-tools"]
-description = "Install native lint tools matching the pinned super-linter version"
-file = "https://raw.githubusercontent.com/grafana/flint/5af56d473d2f82ec5af0fad36b054bde2bd2f8cf/tasks/setup/native-lint-tools.sh" # v0.20.1
-[tasks."lint:fast"]
-description = "Run fast lints (no Renovate)"
-depends = ["lint:super-linter", "lint:links", "lint:go"]
-
-[tasks.native-lint]
-description = "Run lints natively (no container)"
-run = "NATIVE=true mise run lint:fast"
+[tasks.lint]
+description = "Run all lints"
+run = "flint run"
 
-[tasks.pre-commit]
-description = "Pre-commit hook: native lint"
-depends = ["setup:native-lint-tools"]
-run = "NATIVE=true mise run lint:fast"
-[tasks."setup:pre-commit-hook"]
-description = "Install git pre-commit hook that runs native linting"
-run = "mise generate git-pre-commit --write --task=pre-commit"
+[tasks."lint:fix"]
+description = "Auto-fix lint issues"
+run = "flint run --fix"
 
 [tasks.test]
 description = "Run tests"
@@ -49,34 +37,14 @@ description = "Run integration tests"
 env.INTEGRATION_TESTS = "true"
 run = "go test github.com/grafana/oats/tests"
 
-[tasks.fmt]
-description = "Format code"
-run = "gofmt -w ."
-
-[tasks.check-fmt]
-description = "Check code formatting"
-run = "gofmt -l . | grep . && exit 1 || exit 0"
-
-[tasks."lint:go"]
-description = "Lint Go code"
-run = "golangci-lint run"
-
-[tasks."lint"]
-description = "Run all lints"
-depends = ["lint:fast", "lint:renovate-deps"]
+[tasks.build]
+description = "Build the project"
+run = "go build"
 
-[tasks.fix]
-description = "Auto-fix lint issues and regenerate tracked deps"
-run = "AUTOFIX=true mise run lint"
+[tasks.check]
+description = "Run all checks"
+depends = ["lint", "test"]
 
 [tasks.deps]
 description = "Update dependencies"
 run = "go mod tidy"
-
-[tasks.check]
-description = "Run all checks"
-depends = ['lint:go', 'test', 'check-fmt']
-
-[tasks.build]
-description = "Build the project"
-run = "go build"