Make it startable from playwright and also isolate (#5016)

Co-authored-by: Douwe Osinga <douwe@squareup.com>

Justfile

@@ -143,6 +143,15 @@ run-ui:
     @echo "Running UI..."
     cd ui/desktop && npm install && npm run start-gui
 
+run-ui-playwright:
+    #!/usr/bin/env sh
+    just release-binary
+    echo "Running UI with Playwright debugging..."
+    RUN_DIR="$HOME/goose-runs/$(date +%Y%m%d-%H%M%S)"
+    mkdir -p "$RUN_DIR"
+    echo "Using isolated directory: $RUN_DIR"
+    cd ui/desktop && ENABLE_PLAYWRIGHT=true GOOSE_PATH_ROOT="$RUN_DIR" npm run start-gui
+
 run-ui-only:
     @echo "Running UI..."
     cd ui/desktop && npm install && npm run start-gui
@@ -463,4 +472,4 @@ build-test-tools:
 
 record-mcp-tests: build-test-tools
   GOOSE_RECORD_MCP=1 cargo test --package goose --test mcp_integration_test
-  git add crates/goose/tests/mcp_replays/
+  git add crates/goose/tests/mcp_replays/