tools: add make analyze/test/doctor and unify gradle wrappers

- Add scripts/analyze_all.sh and scripts/test_all.sh that run flutter
  analyze/test across every app and report a summary
- Add scripts/repo_doctor.sh that flags config drift (sdk constraint,
  analysis_options, pubspec name, applicationId, gradle version, docs,
  tracked generated files) and exits non-zero for use as a pre-commit gate
- Wire these into the Makefile as 'make analyze/test/doctor' and document
  them in MAINTENANCE.md
- Bring bmi_calculator and push_notifications gradle wrappers up to the
  repo-standard 9.7.0; note push_notifications as a Firebase app requiring
  google-services.json

Makefile

@@ -1,12 +1,15 @@
 SHELL := /bin/bash
 
-.PHONY: help packages clean-builds gradle-update docs
+.PHONY: help packages clean-builds gradle-update docs analyze test doctor
 
 help: ## Show available commands
 	@echo "Available commands:"
 	@echo ""
 	@echo "  make help             Show this help"
 	@echo "  make packages         Run 'flutter packages get' for all apps"
+	@echo "  make analyze          Run 'flutter analyze' for all apps"
+	@echo "  make test             Run 'flutter test' for all apps with tests"
+	@echo "  make doctor           Check every app for configuration drift"
 	@echo "  make clean-builds     Move all build folders to trash"
 	@echo "  make gradle-update    Upgrade Gradle wrappers"
 	@echo "  make docs             Regenerate documentation/EXAMPLES.md"
@@ -24,6 +27,15 @@ help: ## Show available commands
 packages: ## Run flutter packages get for all apps
 	./scripts/get_packages.sh
 
+analyze: ## Run flutter analyze for all apps
+	./scripts/analyze_all.sh
+
+test: ## Run flutter test for all apps that have tests
+	./scripts/test_all.sh
+
+doctor: ## Check all apps for configuration drift
+	./scripts/repo_doctor.sh
+
 clean-builds: ## Move all build folders to trash
 	./scripts/delete_build_folder.sh