feat: deploy jarca ledger network mcp service

- add Docker deployment for independent jarca-ledger container
- enable FastMCP streamable-http runtime configuration
- document dcy-013, REQ-019, and BAT-015 verification evidence
- update structure/runtime baselines and deployment runbook

Dockerfile

@@ -0,0 +1,26 @@
+FROM python:3.12-slim
+
+ENV PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1 \
+    JARCA_LEDGER_DB_PATH=/data/ledger.sqlite3 \
+    JARCA_MCP_TRANSPORT=streamable-http \
+    JARCA_MCP_HOST=0.0.0.0 \
+    JARCA_MCP_PORT=8000 \
+    JARCA_MCP_STREAMABLE_HTTP_PATH=/mcp
+
+WORKDIR /app
+
+COPY pyproject.toml README.md ./
+COPY jarca_ledger_mcp ./jarca_ledger_mcp
+COPY dashboard ./dashboard
+
+RUN python -m pip install --upgrade pip \
+    && python -m pip install '.[dashboard]'
+
+VOLUME ["/data"]
+EXPOSE 8000
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
+    CMD python -c "import os, socket; s=socket.create_connection(('127.0.0.1', int(os.getenv('JARCA_MCP_PORT', '8000'))), timeout=3); s.close()"
+
+CMD ["jarca-ledger-mcp"]