chore: migrate from flint v1 (super-linter) to flint v2 binary

.editorconfig

@@ -5,3 +5,6 @@ indent_size = 2
 
 [*.java]
 indent_size = 2
+
+[*.md]
+max_line_length = 120

.github/config/flint.toml

@@ -0,0 +1,18 @@
+[settings]
+exclude = [
+  "CHANGELOG.md",
+  "gradlew",
+  "buildscripts/spotless.license.java",
+]
+
+[checks.license-header]
+text = """
+/*
+ * Copyright Grafana Labs
+ * SPDX-License-Identifier: Apache-2.0
+ */
+"""
+patterns = ["**/*.java"]
+
+[checks.renovate-deps]
+exclude_managers = ["github-actions", "github-runners"]

.github/renovate-tracked-deps.json

@@ -66,15 +66,22 @@
   },
   "mise.toml": {
     "mise": [
+      "actionlint",
+      "cargo:xmloxide",
+      "editorconfig-checker",
+      "github:google/google-java-format",
+      "github:grafana/flint",
+      "hadolint",
       "java",
       "lychee",
       "node",
+      "npm:@biomejs/biome",
+      "npm:markdownlint-cli2",
+      "npm:prettier",
       "npm:renovate",
-      "ubi:google/google-java-format"
-    ],
-    "regex": [
-      "ghcr.io/super-linter/super-linter",
-      "grafana/flint"
+      "pipx:codespell",
+      "shellcheck",
+      "shfmt"
     ]
   },
   "scripts/otel_operator/Dockerfile": {

.github/renovate.json5

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

.markdownlint.yml

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

AGENTS.md

@@ -42,8 +42,8 @@ Package relocation (`gradle/shadow.gradle`) moves OpenTelemetry classes to `io.o
 After modifying non-Java files (Markdown, YAML, Dockerfiles, shell scripts, etc.), always run linting via mise:
 
 ```sh
-mise run lint:super-linter    # run super-linter only
-mise run fix                  # auto-fix lint issues
+mise run lint                 # run lint checks
+mise run lint:fix             # auto-fix lint issues
 ```
 
 Lint tasks are sourced from [grafana/flint](https://github.com/grafana/flint).

biome.jsonc

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

mise.toml

@@ -1,76 +1,38 @@
 [tools]
+
+# Linters
+actionlint = "1.7.10"
+"cargo:xmloxide" = "0.4.1"
+editorconfig-checker = "v3.6.0"
+"github:google/google-java-format" = "1.34.1"
+"github:grafana/flint" = "0.20.3"
+hadolint = "2.14.0"
 java = "temurin-25.0.1+8.0.LTS"
 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"
-"ubi:google/google-java-format" = "1.34.1"
+"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="slim-v8.4.0@sha256:8421cd4687937ac32a829539d03de51a147c164b42842cbfb20aada83ce1bb0c"
+FLINT_CONFIG_DIR = ".github/config"
 
 [tasks.build]
 description = "Build the Java project"
 run = "./gradlew build"
 
-# 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:java"]
-description = "Check Java formatting and license headers (changed files only)"
-run = """
-files=$(git diff --name-only --diff-filter=d origin/main...HEAD -- '*.java')
-[ -z "$files" ] && exit 0
-failed=0
-for f in $files; do
-  if ! head -4 "$f" | grep -q "SPDX-License-Identifier: Apache-2.0"; then
-    echo "Missing license header: $f"
-    failed=1
-  fi
-done
-google-java-format --dry-run --set-exit-if-changed $files || failed=1
-exit $failed
-"""
-
-[tasks."lint:fast"]
-description = "Run fast lints (no Renovate)"
-depends = ["lint:super-linter", "lint:links", "lint:java"]
-
-[tasks.native-lint]
-description = "Run lints natively (no container)"
-run = "NATIVE=true mise run lint:fast"
-
-[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]
 description = "Run all lints"
-depends = ["lint:fast", "lint:renovate-deps"]
+run = "flint run"
+
+[tasks."lint:fix"]
+description = "Auto-fix lint issues"
+run = "flint run --fix"
 
-[tasks.fix]
-description = "Auto-fix lint issues and regenerate tracked deps"
-run = """
-files=$(git diff --name-only --diff-filter=d origin/main...HEAD -- '*.java')
-[ -n "$files" ] && google-java-format -i $files
-AUTOFIX=true mise run lint
-"""
+[tasks."setup:pre-commit-hook"]
+description = "Install git pre-commit hook"
+run = "mise generate git-pre-commit --write --task=lint"