chore: clean up repo structure

- Add node_modules/, test-results/, e2e-report/, .omp/ to .gitignore
- Remove throwaway debug scripts (debug-pw*.js, debug-login-dom.js)
- Remove empty mock-server/ directory
- Untrack harness artifact (.omp/plans/)
- Add missing project files to git (e2e tests, Dockerfiles, tooling configs)

docker/build-base-image.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+# Build the OpenWrt base image with LuCI packages installed.
+# Docker buildkit cannot build openwrt/rootfs directly because buildkit's
+# seccomp profile blocks uclient-fetch (wget) syscalls used by apk 3.0.
+# We use 'docker run --security-opt seccomp=unconfined' instead.
+set -eu
+
+CONTAINER_NAME="zt-gateway-luci-build-tmp"
+BASE_IMAGE="zt-gateway-luci:base"
+
+docker rm -f "$CONTAINER_NAME" 2>/dev/null || true
+
+docker run -d --name "$CONTAINER_NAME" \
+  --security-opt seccomp=unconfined \
+  openwrt/rootfs:latest sleep infinity
+
+# Setup repos and install packages
+docker exec "$CONTAINER_NAME" mkdir -p /etc/apk/repositories.d /var/lock /var/run
+
+docker exec "$CONTAINER_NAME" sh -c '
+printf "https://downloads.openwrt.org/releases/25.12.4/targets/x86/64/packages/packages.adb\nhttps://downloads.openwrt.org/releases/25.12.4/packages/x86_64/base/packages.adb\nhttps://downloads.openwrt.org/releases/25.12.4/packages/x86_64/luci/packages.adb\nhttps://downloads.openwrt.org/releases/25.12.4/packages/x86_64/packages/packages.adb\nhttps://downloads.openwrt.org/releases/25.12.4/packages/x86_64/routing/packages.adb\n" > /etc/apk/repositories.d/distfeeds.list
+apk add --no-cache --allow-untrusted \
+  luci-base luci-mod-admin-full luci-proto-ppp \
+  uhttpd uhttpd-mod-ubus ucode-mod-lua \
+  ca-certificates curl
+'
+
+docker commit "$CONTAINER_NAME" "$BASE_IMAGE"
+docker rm -f "$CONTAINER_NAME"
+
+echo "Built $BASE_IMAGE"