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>

Makefile

@@ -0,0 +1,28 @@
+.PHONY: up down logs bootstrap tui verify clean nuke
+
+up: .env
+	docker compose up -d --build --wait
+
+.env:
+	@test -f .env || { echo "No .env found - copy .env.example to .env first:"; echo "  cp .env.example .env"; exit 1; }
+
+down:
+	docker compose down
+
+logs:
+	docker compose logs -f --tail=100
+
+bootstrap:
+	docker compose run --rm bootstrap
+
+tui:
+	docker compose run --rm --build tui
+
+verify:
+	bash scripts/verify.sh
+
+clean:
+	docker compose down --remove-orphans
+
+nuke:
+	docker compose --profile '*' down -v --remove-orphans