chore(git): add conventional commit hooks and template

Add commit-msg hook, .gitmessage, and setup script. Ignore .cursor/ in gitignore and lower contact rate limit to 5 per hour.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/setup-git-hooks.ps1

@@ -0,0 +1,17 @@
+# Einmal pro Clone ausführen: Commit-Template + Conventional-Commits-Hook aktivieren
+$ErrorActionPreference = "Stop"
+$repoRoot = Resolve-Path (Join-Path $PSScriptRoot "..")
+
+Push-Location $repoRoot
+try {
+    git config --local commit.template .gitmessage
+    git config --local core.hooksPath .githooks
+
+    Write-Host "Git Hooks aktiv:" -ForegroundColor Green
+    Write-Host "  commit.template = .gitmessage"
+    Write-Host "  core.hooksPath  = .githooks"
+    Write-Host ""
+    Write-Host "Commit-Format: feat(scope): beschreibung"
+} finally {
+    Pop-Location
+}