chore(infra): migrate to fredsystems pre-commit + renovate

Author: fredclausen

.dockerignore

@@ -5,3 +5,7 @@
 READMETEMPLATE.md
 README.md
 buildx.sh
+.direnv
+source-stubs
+.pre-commit-config.yaml
+.envrc

.envrc

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+use flake .

.github/dependabot.yaml

@@ -0,0 +1,25 @@
+---
+name: Lint
+
+on:
+  merge_group:
+  pull_request:
+    types: [opened, synchronize, reopened]
+  workflow_dispatch:
+
+jobs:
+  # =====================================================================
+  # Primary Lint job
+  # =====================================================================
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: cachix/install-nix-action@ab739621df7a23f52766f9ccc97f38da6b7af14f # v31
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+
+      - name: Run flake pre-commit hooks
+        run: nix develop -c pre-commit run --all-files