chore: harmonize .gitignore template for all Conduction apps

.gitignore

@@ -1,90 +1,49 @@
+# IDE
 /.idea/
 /*.iml
 *.Identifier
-.phphunit.result.cache
+.vscode/
 
+# Dependencies
 /vendor/
 /vendor-bin/*/vendor/
+/node_modules/
 
-/.php-cs-fixer.cache
-/tests/.phpunit.cache
-/.phpunit.cache
-.phpunit.cache/
+# Build artifacts
+/js/
 
-/node_modules/
+# Documentation (supports both /docs/ and /docusaurus/ layouts)
+/docs/node_modules/
+/docs/build/
+/docs/.docusaurus/
+/docusaurus/node_modules/
+/docusaurus/build/
+/docusaurus/.docusaurus/
 /website/node_modules/
 /website/.docusaurus/
-/js/
-/custom_apps/
-/config/
+/website/build/
 
+# Testing & Quality
+/.php-cs-fixer.cache
+/tests/.phpunit.cache
+/.phpunit.cache/
+.phpunit.cache/
+.phpunit.result.cache
 /coverage/
 /coverage-frontend/
-
-# Quality reports
-/quality-reports/
-quality-baseline.json
 /phpmetrics/
-/phpmetrics-deps/
-
-# PHPCS/Psalm output files (not config files)
-phpcs-*.json
-phpcs-*.txt
-psalm-errors.json
-psalm-output.json
-psalm-full-output.json
-phpqa_output.log
-
-# Data files
-*.csv
-*.xls
-*.xlsx
-
-# Files with unusual extensions or no extensions that could be mistakes
-**/PR *
-**/adds *
-**/implements *
-**/ALL *
-**/endpoints *
-**/*Analysis*
-**/*references*
-**/*encoding*
-**/ter
-**/clearCache*
-**/update*Settings*
-**/rebase*
-**/setup*
-
-# Temporary test files that shouldn't be committed
-simple-solr-test.php
-test-solr-connection.php
-
-# Files with unusual extensions or no extensions that could be mistakes
-**/PR *
-**/adds *
-**/implements *
-
-phpqa/
+/quality-reports/
+/phpqa/
+/test-results/screenshots/
 
-# Docker AI models (too large for git)
-docker/dolphin/models/
+# Nextcloud
+/custom_apps/
+/custom-apps/
+/config/
 
-# Issues folder should be tracked
-!issues/
-!issues/**
+# OS
+.DS_Store
+Thumbs.db
 
-/docusaurus/node_modules/
-/docusaurus/build/
-/docusaurus/.docusaurus/
-# Test screenshots — images generated by browser test commands (test-app, run-test-scenario)
-# Only images are ignored; markdown reports and scenario files are kept in git.
-test-results/**/*.png
-test-results/**/*.jpg
-test-results/**/*.jpeg
-test-results/**/*.gif
-test-results/**/*.webp
-openspec/test-site-results/**/*.png
-openspec/test-site-results/**/*.jpg
-openspec/test-site-results/**/*.jpeg
-openspec/test-site-results/**/*.gif
-openspec/test-site-results/**/*.webp
+# Claude Code
+.claude/worktrees/