chore: format devcontainer.json and lint.yaml for consistency

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| mcr.microsoft.com/devcontainers/javascript-node | image | major | `1-20` → `4-20` |

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### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi42Ni4wIiwidXBkYXRlZEluVmVyIjoiNDIuNjYuMCIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==-->

Reviewed-on: #51
Co-authored-by: Renovate Bot <renovate@horstenkamp.eu>
Co-committed-by: Renovate Bot <renovate@horstenkamp.eu>

.devcontainer/devcontainer.json

@@ -0,0 +1,37 @@
+{
+  "name": "JS Dev Container",
+  "image": "mcr.microsoft.com/devcontainers/javascript-node:4-20",
+  "features": {
+    "ghcr.io/devcontainers/features/git:1": {},
+    "ghcr.io/devcontainers/features/git-lfs:1": {},
+    "ghcr.io/devcontainers-extra/features/pre-commit:2": {},
+    "ghcr.io/devcontainers-extra/features/npm-packages:1": {
+      "packages": "@google/gemini-cli"
+    }
+  },
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "ms-python.python",
+        "esbenp.prettier-vscode",
+        "vitest.explorer",
+        "google.gemini-cli-vscode-ide-companion",
+        "google.geminicodeassist"
+      ],
+      "settings": {
+        "editor.formatOnSave": true,
+        "editor.defaultFormatter": "esbenp.prettier-vscode"
+      }
+    }
+  },
+  "postStartCommand": "bash .devcontainer/setup.sh",
+  "remoteUser": "node",
+  "updateRemoteUserUID": true,
+  "mounts": [
+    "source=pipx-venvs,target=/home/node/.local/share/pipx,type=volume",
+    "source=pipx-bin,target=/home/node/.local/bin,type=volume",
+    "source=pre-commit-cache,target=/home/node/.cache/pre-commit,type=volume",
+    "source=${localEnv:USERPROFILE}/.gemini,target=/home/node/.gemini,type=bind",
+    "source=gvscode-extensions,target=/home/node/.cache/google-vscode-extension,type=volume"
+  ]
+}

.devcontainer/setup.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# 1. Fix Git Permissions (Critical in Docker)
+git config --global --add safe.directory $(pwd)
+
+# In your setup.sh or postCreateCommand
+sudo chown -R node:node /home/node/.cache/
+
+# 2. Re-connect Git Hooks
+pre-commit install
+pre-commit install-hooks

.pre-commit-config.yaml

@@ -3,10 +3,6 @@ repos:
 - repo: https://github.com/pre-commit/pre-commit-hooks
   rev: v6.0.0
   hooks:
-  - id: end-of-file-fixer
-    exclude: (.txt$|.ipynb$|README.md$|readme.mde$)
-  - id: trailing-whitespace
-    exclude: (.txt$|README.md$)
   - id: check-yaml
   - id: check-json
   - id: check-toml
@@ -22,7 +18,6 @@ repos:
     args: [--autofix, --no-sort-keys, --no-ensure-ascii]
   - id: check-merge-conflict
   - id: no-commit-to-branch
-    args: [--branch, main]
 
 - repo: https://github.com/macisamuele/language-formatters-pre-commit-hooks
   rev: v2.15.0
@@ -34,16 +29,6 @@ repos:
   - id: pretty-format-yaml
     args: [--autofix]
 
-- repo: https://github.com/frnmst/md-toc
-  rev: 9.0.0
-  hooks:
-  - id: md-toc
-
-- repo: https://github.com/Lucas-C/pre-commit-hooks-java
-  rev: 1.3.10
-  hooks:
-  - id: validate-html
-
 - repo: https://github.com/pre-commit/mirrors-prettier
   rev: v4.0.0-alpha.8
   hooks:
@@ -54,3 +39,15 @@ repos:
   rev: 0.36.0
   hooks:
   - id: check-renovate
+  - id: check-github-actions
+  - id: check-github-workflows
+
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v6.0.0
+  hooks:
+  - id: end-of-file-fixer
+    exclude: (.txt$|.ipynb$|README.md$|readme.mde$)
+  - id: trailing-whitespace
+    exclude: (.txt$|README.md$)
+  - id: mixed-line-ending
+    args: [--fix=lf]