FASE 7e: CSS Inline Extraction + Minificación

- Extraído CSS inline de 15 templates POS + 13 templates Dashboard
- CSS movido a archivos .css externos en pos/static/css/ y dashboard/
- Generados .min.css vía minify-assets.sh
- Nginx auto-serve transparente para .min.css
- Tests: 73/73 pasando
- Script: scripts/extract-inline-css.py

.gitignore

@@ -43,6 +43,21 @@ Thumbs.db
 # Local configuration
 .claude/
 *.local.json
+.env
+.env.local
+.env.production
+
+# Secrets
+*.pem
+*.key
+
+# POS static uploads
+pos/static/images/parts/
+
+# SQLite databases
+*.db
+*.db-shm
+*.db-wal
 
 # Temporary files
 *.tmp
@@ -54,6 +69,10 @@ Thumbs.db
 
 # Data files (TecDoc downloads, too large for git)
 data/
+vehicle_database/
+CapturasWeb/
+.pytest_cache/
+node_modules/
 
 # SQLite WAL files
 *.db-shm