Initial implementation of mcq — document reading queue

Single-binary service: push raw markdown via REST/gRPC API, read rendered
HTML through mobile-friendly web UI. MCIAS auth on all endpoints, SQLite
storage, goldmark rendering with GFM and syntax highlighting.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Makefile

@@ -0,0 +1,45 @@
+.PHONY: build test vet lint proto proto-lint clean docker push all devserver
+
+MCR     := mcr.svc.mcp.metacircular.net:8443
+VERSION := $(shell git describe --tags --always --dirty)
+LDFLAGS := -trimpath -ldflags="-s -w -X main.version=$(VERSION)"
+
+mcq:
+	CGO_ENABLED=0 go build $(LDFLAGS) -o mcq ./cmd/mcq
+
+build:
+	go build ./...
+
+test:
+	go test ./...
+
+vet:
+	go vet ./...
+
+lint:
+	golangci-lint run ./...
+
+proto:
+	protoc --go_out=. --go_opt=module=git.wntrmute.dev/mc/mcq \
+		--go-grpc_out=. --go-grpc_opt=module=git.wntrmute.dev/mc/mcq \
+		proto/mcq/v1/*.proto
+
+proto-lint:
+	buf lint
+	buf breaking --against '.git#branch=master,subdir=proto'
+
+clean:
+	rm -f mcq
+
+docker:
+	docker build --build-arg VERSION=$(VERSION) -t $(MCR)/mcq:$(VERSION) -f Dockerfile .
+
+push: docker
+	docker push $(MCR)/mcq:$(VERSION)
+
+devserver: mcq
+	@mkdir -p srv
+	@if [ ! -f srv/mcq.toml ]; then cp deploy/examples/mcq.toml.example srv/mcq.toml; echo "Created srv/mcq.toml from example — edit before running."; fi
+	./mcq server --config srv/mcq.toml
+
+all: vet lint test mcq