test: add script to verify Dockerfile builds and nanobot status works

Builds the image, runs onboard + status inside the container, and validates
that the expected output fields (Config, Workspace, Model, API keys) are present.

https://claude.ai/code/session_011C1h1NERqqZp4ht3Pqpwkc

test_docker.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+IMAGE_NAME="nanobot-test"
+
+echo "=== Building Docker image ==="
+docker build -t "$IMAGE_NAME" .
+
+echo ""
+echo "=== Running 'nanobot onboard' ==="
+docker run --name nanobot-test-run "$IMAGE_NAME" onboard
+
+echo ""
+echo "=== Running 'nanobot status' ==="
+STATUS_OUTPUT=$(docker commit nanobot-test-run nanobot-test-onboarded > /dev/null && \
+    docker run --rm nanobot-test-onboarded status 2>&1) || true
+
+echo "$STATUS_OUTPUT"
+
+echo ""
+echo "=== Validating output ==="
+PASS=true
+
+check() {
+    if echo "$STATUS_OUTPUT" | grep -q "$1"; then
+        echo "  PASS: found '$1'"
+    else
+        echo "  FAIL: missing '$1'"
+        PASS=false
+    fi
+}
+
+check "nanobot Status"
+check "Config:"
+check "Workspace:"
+check "Model:"
+check "OpenRouter API:"
+check "Anthropic API:"
+check "OpenAI API:"
+
+echo ""
+if $PASS; then
+    echo "=== All checks passed ==="
+else
+    echo "=== Some checks FAILED ==="
+    exit 1
+fi
+
+# Cleanup
+echo ""
+echo "=== Cleanup ==="
+docker rm -f nanobot-test-run 2>/dev/null || true
+docker rmi -f nanobot-test-onboarded 2>/dev/null || true
+docker rmi -f "$IMAGE_NAME" 2>/dev/null || true
+echo "Done."