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>

tui/Dockerfile

@@ -0,0 +1,19 @@
+FROM python:3.12-slim
+
+# libolm + toolchain: matrix-nio[e2e] builds python-olm against libolm
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends libolm-dev libolm3 build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /opt/vortex-tui
+COPY pyproject.toml ./
+COPY app ./app
+RUN pip install --no-cache-dir .
+
+ENV TERM=xterm-256color \
+    CREDENTIALS_FILE=/shared/credentials.json \
+    STORE_DIR=/shared/tui-store \
+    DRAFTS_DB=/shared/drafts/drafts.db
+
+# interactive TUI: run with `docker compose run --rm tui` (TTY)
+CMD ["vortex-tui"]