chore: add lint-staged with pre-commit hooks for src/ directory (#38)

* chore: add lint-staged with pre-commit hooks for src/ directory

- Upgrade husky from 8.0.3 to 9.1.7
- Add lint-staged 16.2.3 for automated code quality checks
- Configure lint-staged to run eslint and prettier on src/**/*.{ts,tsx}
- Update pre-commit hook to use lint-staged
- Add post-checkout hook for automatic dependency installation
- Add pre-push hook to prevent direct pushes to main branch

This matches the setup in jupyterlab-deepnote for consistency.

* fix: update package-lock.json for husky 9.1.7 and lint-staged 16.2.3

Update package-lock.json to match the package.json changes made in the previous commit.
This resolves the npm ci failures in CI where the lock file was out of sync with package.json.

All verification steps passed locally:
- npm run lint ✓
- npm run format ✓
- npm run typecheck ✓
- npm run compile ✓
- npm test ✓ (1329 passing)

* Update .husky/post-checkout

Co-authored-by: Christoffer Artmann <Artgaard@gmail.com>

* fix: package-lock.json

* remove .eslintcache

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Lukas Šaltėnas <lukas.saltenas@gmail.com>
Co-authored-by: Christoffer Artmann <Artgaard@gmail.com>

Author: 4 people

.gitignore

@@ -1,74 +1,75 @@
+__pycache__
+!build/
+!src/test/pythonEnvironments/**/*.*
+!yarn.lock
 .DS_Store
+.eslintcache
+.github_token
 .huskyrc.json
-dist
-out
+.nyc_output
+.pytest_cache
+.python-version
+.qlty/cache
+.qlty/logs
+.qlty/out
+.qlty/plugin_cachedir
+.qlty/results
+.vs/
+.vscode-test
+.vscode-test-web
 *.exe
-log.log
-**/node_modules
+*.i18n.json
+*.nls.*.json
+*.noseids
 *.pyc
 *.vsix
+*.xlf
+**/.mypy_cache/**
+**/.venv*/
+**/.vscode test/**
+**/.vscode-smoke/**
+**/.vscode-test/**
 **/.vscode/.ropeproject/**
+**/*.esbuild.meta.json
+**/node_modules
 **/testFiles/**/.cache/**
-*.noseids
-.nyc_output
-.vscode-test
-__pycache__
-npm-debug.log
-**/.mypy_cache/**
-!yarn.lock
+# Compilation of less to css
+# Esbuild files
+# Qlty cache directories
+# translation files
+bin/**
 coverage/
 cucumber-report.json
-**/.vscode-test/**
-**/.vscode test/**
-**/.vscode-smoke/**
-**/.venv*/
-port.txt
-precommit.hook
-pythonFiles/lib/**
 debug_coverage*/**
-languageServer/**
+debug*.log
+debugpy*.log
+dist
+l10n/
 languageServer.*/**
-bin/**
+languageServer/**
+log.log
 logs/**
+nodeLanguageServer.*/**
+nodeLanguageServer/**
+npm-debug.log
 obj/**
-.pytest_cache
-temp
-tmp
-src/test/datascience/tmp/**
-src/test/datascience/temp/**
-.python-version
-.vs/
-test-results*.xml
-testresults.json
-telemetry.json
-xunit-test-results.xml
-!build/
-debug*.log
-debugpy*.log
+out
+port.txt
+precommit.hook
 pydevd*.log
-vscode.d.ts
-vscode.proposed.*.d.ts
-nodeLanguageServer/**
-nodeLanguageServer.*/**
+pythonFiles/lib/**
 src/test/datascience/.venv*
-!src/test/pythonEnvironments/**/*.*
-.vscode-test-web
-.github_token
-# translation files
-*.xlf
-*.nls.*.json
-*.i18n.json
-l10n/
-# Esbuild files
-**/*.esbuild.meta.json
-# Compilation of less to css
+src/test/datascience/temp/**
+src/test/datascience/tmp/**
 src/webviews/webview-side/interactive-common/variableExplorerGrid.css
 src/webviews/webview-side/interactive-common/variableExplorerGrid.css.map
 src/webviews/webview-side/react-common/seti/seti.css
 src/webviews/webview-side/react-common/seti/seti.css.map
-# Qlty cache directories
-.qlty/cache
-.qlty/logs
-.qlty/out
-.qlty/plugin_cachedir
-.qlty/results
+telemetry.json
+temp
+test-results*.xml
+testresults.json
+tmp
+vscode.d.ts
+vscode.proposed.*.d.ts
+xunit-test-results.xml

.husky/post-checkout

@@ -0,0 +1 @@
+npm ci

.husky/pre-commit

@@ -1,17 +1 @@
-#!/bin/sh
-if npm list prettier | grep -q prettier@ ; then
-    echo husky - prettier is installed
-else
-    echo husky - prettier is not installed, skipping format check
-    exit 0
-fi
-
-# run prettier on all .ts files that are in the commit
-changed=$(git diff --diff-filter=ACM --cached --name-only | grep .ts$ | tr '\n' ' ')
-
-if [ -z "$changed" ]; then
-    echo husky - No modified files to check
-    exit 0
-fi
-
-npx prettier $changed --check
+npm exec lint-staged

.husky/pre-push

@@ -0,0 +1,5 @@
+branch_name="$(git symbolic-ref --short HEAD)"
+if [ "$branch_name" = "main" ]; then
+  echo "Pushing directly to main is not allowed."
+  exit 1
+fi