chore: remove container legacy references

- Delete container/build.sh (Docker build script, no longer used)
- Remove "auth" npm script (whatsapp-auth.ts doesn't exist)
- Remove CONTAINER_* env var fallbacks from config.ts
- Update CLAUDE.md: container-runner → agent-runner, fix descriptions
- Rename MAX_CONCURRENT_CONTAINERS → MAX_CONCURRENT_AGENTS in systemd

container/build.sh

@@ -1,32 +0,0 @@
-#!/bin/bash
-# Build the NanoClaw agent container image
-
-set -e
-
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-cd "$SCRIPT_DIR"
-
-IMAGE_NAME="nanoclaw-agent"
-TAG="${1:-latest}"
-CONTAINER_RUNTIME="${CONTAINER_RUNTIME:-container}"
-
-echo "Building NanoClaw agent container image..."
-echo "Image: ${IMAGE_NAME}:${TAG}"
-
-${CONTAINER_RUNTIME} build -t "${IMAGE_NAME}:${TAG}" .
-
-# Build Codex agent image (if Dockerfile.codex exists)
-if [ -f "$SCRIPT_DIR/Dockerfile.codex" ]; then
-  echo ""
-  echo "Building NanoClaw Codex agent container image..."
-  echo "Image: nanoclaw-codex-agent:${TAG}"
-  ${CONTAINER_RUNTIME} build -t "nanoclaw-codex-agent:${TAG}" -f Dockerfile.codex .
-  echo "Built nanoclaw-codex-agent:${TAG}"
-fi
-
-echo ""
-echo "Build complete!"
-echo "Image: ${IMAGE_NAME}:${TAG}"
-echo ""
-echo "Test with:"
-echo "  echo '{\"prompt\":\"What is 2+2?\",\"groupFolder\":\"test\",\"chatJid\":\"test@g.us\",\"isMain\":false}' | ${CONTAINER_RUNTIME} run -i ${IMAGE_NAME}:${TAG}"