fix: Makefile test targets for Debian system Python and sudo

- All test targets now use python3 -m pytest (not bare pytest)
- test-e2e-deps uses sudo pip3 --break-system-packages and
  sudo python3 -m playwright install (Debian externally-managed env)
- test-e2e-wg uses sudo -E python3 -m pytest (preserves PATH/env)
- reset-test-admin-pass uses make ifndef guard instead of shell ?: expansion
- Remove stale -m markers from test targets (filters were redundant)

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

Makefile

@@ -234,11 +234,11 @@ test-coverage:
 
 test-integration:
 	@echo "Running full integration tests (requires running PIC stack)..."
-	PIC_HOST=$${PIC_HOST:-localhost} pytest tests/integration/ -v
+	PIC_HOST=$${PIC_HOST:-localhost} python3 -m pytest tests/integration/ -v
 
 test-integration-readonly:
 	@echo "Running read-only integration tests (no peer creation)..."
-	PIC_HOST=$${PIC_HOST:-localhost} pytest tests/integration/test_live_api.py tests/integration/test_webui.py -v
+	PIC_HOST=$${PIC_HOST:-localhost} python3 -m pytest tests/integration/test_live_api.py tests/integration/test_webui.py -v
 
 test-api:
 	cd api && python3 -m pytest tests/test_api_endpoints.py -v
@@ -247,24 +247,29 @@ test-cli:
 	cd api && python3 -m pytest tests/test_cli_tool.py -v
 
 # ── E2E tests ─────────────────────────────────────────────────────────────────
+# Run `make test-e2e-deps` once to install dependencies, then use the other targets.
+# WG tests require wg-quick and run under sudo (passwordless sudo assumed on this host).
 
 test-e2e-deps:
-	pip install -r tests/e2e/requirements.txt
-	playwright install --with-deps chromium
+	sudo pip3 install --break-system-packages -r tests/e2e/requirements.txt
+	sudo python3 -m playwright install --with-deps chromium
 
 test-e2e-api:
-	@PIC_HOST=$${PIC_HOST:-localhost} pytest tests/e2e/api -v -m "not wg and not cell_link"
+	@PIC_HOST=$${PIC_HOST:-localhost} python3 -m pytest tests/e2e/api -v
 
 test-e2e-ui:
-	@PIC_HOST=$${PIC_HOST:-localhost} pytest tests/e2e/ui -v -m ui
+	@PIC_HOST=$${PIC_HOST:-localhost} python3 -m pytest tests/e2e/ui -v
 
 test-e2e-wg:
-	@PIC_HOST=$${PIC_HOST:-localhost} sudo -E env PATH=$$PATH pytest tests/e2e/wg -v -m wg -p no:xdist
+	@PIC_HOST=$${PIC_HOST:-localhost} sudo -E python3 -m pytest tests/e2e/wg -v -p no:xdist
 
 test-e2e: test-e2e-api test-e2e-ui test-e2e-wg
 
 reset-test-admin-pass:
-	@python3 scripts/reset_admin_password.py "$${PIC_TEST_ADMIN_PASS:?Set PIC_TEST_ADMIN_PASS=<new-password>}"
+ifndef PIC_TEST_ADMIN_PASS
+	$(error Usage: make reset-test-admin-pass PIC_TEST_ADMIN_PASS=newpassword)
+endif
+	python3 scripts/reset_admin_password.py "$(PIC_TEST_ADMIN_PASS)"
 
 test-phase1:
 	cd api && python3 -m pytest tests/test_network_manager.py tests/test_phase1_endpoints.py -v