feat: implement blog project with CI pipeline

scripts/commit-msg

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+set -e
+
+COMMIT_MSG_FILE="$1"
+if [ -z "$COMMIT_MSG_FILE" ]; then
+    echo "Checking for cache files in staged changes..."
+    
+    CACHE_FILES=$(git diff --cached --name-only | grep -E "__pycache__|\.pyc$|\.pyo$" || true)
+    
+    if [ -n "$CACHE_FILES" ]; then
+        echo "❌ Attempting to commit Python cache files!"
+        echo ""
+        echo "Files:"
+        echo "$CACHE_FILES"
+        echo ""
+        echo "Run: bash scripts/clean_cache.sh"
+        echo "Or: git reset HEAD <files>"
+        exit 1
+    fi
+    
+    echo "✓ No cache files in staged changes"
+    exit 0
+fi
+
+COMMIT_MSG=$(cat "$COMMIT_MSG_FILE")
+
+if ! echo "$COMMIT_MSG" | grep -qE "^(feat|fix|docs|style|refactor|test|chore): [a-z].{0,49}$"; then
+    echo "❌ Invalid commit message format!"
+    echo ""
+    echo "Current message: $COMMIT_MSG"
+    echo ""
+    echo "Expected format: <type>: <short description>"
+    echo ""
+    echo "Types:"
+    echo "  feat     - New feature"
+    echo "  fix      - Bug fix"
+    echo "  docs     - Documentation"
+    echo "  style    - Code style"
+    echo "  refactor - Refactoring"
+    echo "  test     - Tests"
+    echo "  chore    - Maintenance"
+    echo ""
+    echo "Rules:"
+    echo "  - Max 50 characters"
+    echo "  - Lowercase after type"
+    echo "  - Imperative mood (add, not added)"
+    echo "  - No period at end"
+    echo ""
+    echo "Good examples:"
+    echo "  feat: add user authentication"
+    echo "  fix: resolve database timeout"
+    echo "  docs: update API docs"
+    echo ""
+    exit 1
+fi
+
+if echo "$COMMIT_MSG" | grep -qE "\.$"; then
+    echo "❌ Commit message should not end with a period"
+    exit 1
+fi
+
+echo "✓ Commit message valid: $COMMIT_MSG"
+exit 0