fix: uninstall stops optional service containers before core teardown

Iterates data/services/*/docker-compose.yml and runs `docker compose down`
for each before stopping core containers, so stale optional-service
containers (email, calendar, files, etc.) don't leave cell-network occupied
and block a subsequent fresh install.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Makefile

@@ -175,6 +175,7 @@ uninstall:
 	case "$$ans" in \
 	  y|Y) \
 	    echo "Stopping containers and removing images..."; \
+	    for f in data/services/*/docker-compose.yml; do [ -f "$$f" ] && PUID=$$(id -u) PGID=$$(id -g) docker compose -f "$$f" down 2>/dev/null || true; done; \
 	    PUID=$$(id -u) PGID=$$(id -g) $(DCF) --profile core down -v --rmi all 2>/dev/null || true; \
 	    echo "Deleting config/ and data/..."; \
 	    sudo rm -rf config/ data/; \
@@ -182,6 +183,7 @@ uninstall:
 	    ;; \
 	  n|N|"") \
 	    echo "Stopping and removing containers (keeping images and data)..."; \
+	    for f in data/services/*/docker-compose.yml; do [ -f "$$f" ] && PUID=$$(id -u) PGID=$$(id -g) docker compose -f "$$f" down 2>/dev/null || true; done; \
 	    PUID=$$(id -u) PGID=$$(id -g) $(DCF) --profile core down 2>/dev/null || true; \
 	    echo "Done. Images, config/ and data/ are untouched. Run 'make start' to bring it back up."; \
 	    ;; \