feat: parity milestone — add linux-to-sync, mark v1.0.0

Every service from ubuntu-post-install-24.04-crowdsec.sh is now a module.
35 services across 8 categories; setup.sh is the primary install path.

- services/linux-to-sync.sh (extras): clone private repo via SSH or PAT
- setup.sh: is_installed case for linux-to-sync (~/.git marker)
- MODULAR.md: migration table updated to show full inventory
- VERSION: 0.9.11 → 1.0.0 (parity achieved)

https://claude.ai/code/session_01Y4dMKtkqkpvmgDKoRdzhTG

setup.sh

@@ -80,6 +80,7 @@ is_installed() {
         glow) command -v glow >/dev/null 2>&1 ;;
         crowdsec) command -v cscli >/dev/null 2>&1 ;;
         silent-send) [ -d "$ACTUAL_HOME/silent-send/.git" ] ;;
+        linux-to-sync) [ -d "$ACTUAL_HOME/linux-to-sync/.git" ] ;;
         *) [ -e "$DOCKER_DIR/$1" ] ;;
     esac
 }