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>

synapse/homeserver.template.yaml

@@ -0,0 +1,60 @@
+server_name: "${MATRIX_SERVER_NAME}"
+pid_file: /data/homeserver.pid
+report_stats: false
+
+listeners:
+  - port: 8008
+    tls: false
+    type: http
+    x_forwarded: true
+    bind_addresses: ['0.0.0.0']
+    resources:
+      - names: [client, federation]
+        compress: false
+
+database:
+  name: psycopg2
+  args:
+    user: vortex
+    password: "${POSTGRES_PASSWORD}"
+    database: synapse
+    host: postgres
+    cp_min: 5
+    cp_max: 10
+
+log_config: /data/log.config
+media_store_path: /data/media_store
+signing_key_path: /data/signing.key
+
+registration_shared_secret: "${REGISTRATION_SHARED_SECRET}"
+enable_registration: false
+
+macaroon_secret_key: "${MACAROON_SECRET_KEY}"
+form_secret: "${FORM_SECRET}"
+
+trusted_key_servers: []
+suppress_key_server_warning: true
+serve_server_wellknown: false
+
+# Relaxed rate limits for local single-user use.
+rc_message:
+  per_second: 1000
+  burst_count: 1000
+rc_login:
+  address: { per_second: 1000, burst_count: 1000 }
+  account: { per_second: 1000, burst_count: 1000 }
+  failed_attempts: { per_second: 1000, burst_count: 1000 }
+rc_registration:
+  per_second: 1000
+  burst_count: 1000
+rc_joins:
+  local: { per_second: 1000, burst_count: 1000 }
+  remote: { per_second: 1000, burst_count: 1000 }
+rc_invites:
+  per_room: { per_second: 1000, burst_count: 1000 }
+  per_user: { per_second: 1000, burst_count: 1000 }
+rc_admin_redaction:
+  per_second: 1000
+  burst_count: 1000
+
+# app_service_config_files is appended by bootstrap.sh