Initial agent-news: Dart Telegram bot + Claude Code runner + MCP bridge

/news spawns claude-code as a local subprocess (single pod, no cross-container
exec on K3s); Claude delivers the digest itself via the send_to_telegram MCP tool.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

runner/Dockerfile

@@ -0,0 +1,42 @@
+# agent-news — бот + claude-code CLI + MCP-мост в одном контейнере (Decision: см. план).
+# Контекст сборки = корень репозитория (нужны bot/ и mcp_server/).
+#   docker build -f runner/Dockerfile -t agent-news:dev .
+
+# ── stage 1: компиляция agent-news-bot ──────────────────────────────────
+FROM mirror.service.bearsdev.tech/library/dart:stable AS bot-build
+WORKDIR /build
+COPY bot/pubspec.* ./
+RUN dart pub get
+COPY bot/ ./
+RUN dart pub get --offline \
+ && dart compile exe bin/agent_news_bot.dart -o /build/agent-news-bot
+
+# ── stage 2: компиляция agent-news-mcp ──────────────────────────────────
+FROM mirror.service.bearsdev.tech/library/dart:stable AS mcp-build
+WORKDIR /build
+COPY mcp_server/pubspec.* ./
+RUN dart pub get
+COPY mcp_server/ ./
+RUN dart pub get --offline \
+ && dart compile exe bin/agent_news_mcp.dart -o /build/agent-news-mcp
+
+# ── stage 3: runtime — node (для claude-code CLI) + оба dart-бинарника ──
+FROM mirror.service.bearsdev.tech/library/node:22-slim
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends ca-certificates curl \
+ && rm -rf /var/lib/apt/lists/* \
+ && npm install -g @anthropic-ai/claude-code \
+ && npm cache clean --force
+
+COPY --from=bot-build /build/agent-news-bot /usr/local/bin/agent-news-bot
+COPY --from=mcp-build /build/agent-news-mcp /usr/local/bin/agent-news-mcp
+RUN chmod +x /usr/local/bin/agent-news-bot /usr/local/bin/agent-news-mcp
+
+RUN useradd -m -u 10001 agent
+COPY --chown=agent:agent runner/claude-config /home/agent/claude-config
+USER agent
+WORKDIR /home/agent
+ENV MCP_CONFIG_PATH=/home/agent/claude-config/mcp.json
+
+# ~/.claude (OAuth-логин claude-code) монтируется сюда через PVC — см. deploy/agent-news.
+CMD ["agent-news-bot"]