feat: enhance daemon dispatching, device readiness fallback, and live streaming UI

- Admin Console & Task Queue: add cancellation, session startup progress endpoints, and support ingress metadata
- Diagnostics & Runtime: enhance ADB probe to prefer unlocked devices and synchronize with readiness engine
- MCP Server: dispatch tasks through Artemis Daemon scheduler with fallback to standalone runner, improve action overlays
- Showcase UI: improve session auto-selection with pinning support, render startup progress, and refine stream styling
- CLI & Makefile: expose server lifecycle commands (restart, stop, status)
- Configuration: ignore runtime server state file in .gitignore

Makefile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-.PHONY: help test install install-deps setup start ui build-ui doctor clean precommit-install precommit lint format typecheck
+.PHONY: help test install install-deps setup start ui restart stop status build-ui doctor clean precommit-install precommit lint format typecheck
 
 help: ## Show this help message
 	@echo 'Usage: make [target]'
@@ -26,6 +26,15 @@ start: ## One-click start Artemis Showcase UI and auto-open browser
 ui: ## Launch the unified Showcase UI & Admin Console in browser
 	@uv run artemis ui --open
 
+restart: ## Restart running Artemis Web UI & server
+	@uv run artemis restart
+
+stop: ## Stop running Artemis Web UI & server
+	@uv run artemis stop
+
+status: ## Display Artemis Web UI & server status
+	@uv run artemis status
+
 build-ui: ## Build the Showcase UI Angular frontend
 	@echo "🎨 Building Showcase UI..."
 	@cd apps/showcase_ui && npm install && npm run build