feat(make): accept port overrides on the dev target (#2368)

Makefile

@@ -57,6 +57,9 @@ SERVICE_PORT_FLAG := $(if $(PORT),--port $(PORT),)
 SERVICE_HOME_DIR_FLAG := $(if $(HOME_DIR),--home-dir "$(HOME_DIR)",)
 SERVICE_NO_BOOT_START_FLAG := $(if $(filter 1 true yes,$(NO_BOOT_START)),--no-boot-start,)
 SERVICE_INSTALL_FLAGS := $(SERVICE_PORT_FLAG) $(SERVICE_HOME_DIR_FLAG) $(SERVICE_NO_BOOT_START_FLAG)
+DEV_PORT_FLAG := $(if $(PORT),--port $(PORT),)
+DEV_WEB_PORT_FLAG := $(if $(WEB_PORT),--web-internal-port $(WEB_PORT),)
+DEV_FLAGS := $(DEV_PORT_FLAG) $(DEV_WEB_PORT_FLAG) $(DEV_ARGS)
 DESKTOP_BUNDLES ?= dmg
 
 # Phase headers
@@ -84,6 +87,7 @@ help:
 	@echo "  bootstrap        Install mise tools, workspace deps, and git hooks"
 	@echo "  bootstrap-e2e    Bootstrap plus Playwright browser/system deps"
 	@echo "  dev              Run backend + web via local CLI (auto ports)"
+	@echo "  dev PORT=38430   Run dev on a fixed backend port (beats KANDEV_BACKEND_PORT)"
 	@echo "  dev-prod-db      Run dev mode against the production db at ~/.kandev"
 	@echo "  dev-backend      Run backend in development mode (port 38429)"
 	@echo "  dev-web          Run web app in development mode (port 37429)"
@@ -188,7 +192,7 @@ ifeq ($(OS),Windows_NT)
 	@$(MAKE) -C $(BACKEND_DIR) build-winjob
 endif
 	@echo "Launching via CLI (auto ports)..."
-	@cd $(APPS_DIR) && $(PNPM) -C cli dev -- dev
+	@cd $(APPS_DIR) && $(PNPM) -C cli dev -- dev $(DEV_FLAGS)
 
 .PHONY: dev-prod-db
 dev-prod-db: export KANDEV_DATABASE_PATH := $(HOME)/.kandev/data/kandev.db