feat: unified messaging TUI MVP — Synapse + 7 mautrix bridges + Textual TUI + MCP draft staging

One-command local stack: cp .env.example .env && make up. Idempotent
bootstrap renders Synapse + bridge configs from pristine upstream examples,
provisions databases, registrations, double puppeting, and the admin user.
Textual TUI with bridge manager, in-terminal QR login, and drafts panel.
MCP server exposes read tools and a human-gated draft send workflow.

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

mcp/Dockerfile

@@ -0,0 +1,19 @@
+FROM python:3.12-slim
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        build-essential libolm-dev libolm3 curl \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+COPY pyproject.toml ./
+COPY server ./server
+RUN pip install --no-cache-dir .
+
+ENV MCP_HTTP_PORT=8765
+
+# Any HTTP response (even 4xx/406) means the server is up; curl exits 0 on connect.
+HEALTHCHECK --interval=30s --timeout=5s --start-period=30s --retries=3 \
+    CMD curl -s -o /dev/null "http://localhost:${MCP_HTTP_PORT:-8765}/mcp" || exit 1
+
+CMD ["vortex-mcp"]