P0.1: Repository and module setup

Go module, Makefile with standard targets, golangci-lint v2 config,
CLAUDE.md, and empty CLI/agent binaries. Build, vet, and lint all pass.

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

Makefile

@@ -0,0 +1,35 @@
+.PHONY: build test vet lint proto proto-lint clean all
+
+LDFLAGS := -trimpath -ldflags="-s -w -X main.version=$(shell git describe --tags --always --dirty)"
+
+mcp:
+	CGO_ENABLED=0 go build $(LDFLAGS) -o mcp ./cmd/mcp
+
+mcp-agent:
+	CGO_ENABLED=0 go build $(LDFLAGS) -o mcp-agent ./cmd/mcp-agent
+
+build:
+	go build ./...
+
+test:
+	go test ./...
+
+vet:
+	go vet ./...
+
+lint:
+	golangci-lint run ./...
+
+proto:
+	protoc --go_out=. --go_opt=module=git.wntrmute.dev/kyle/mcp \
+		--go-grpc_out=. --go-grpc_opt=module=git.wntrmute.dev/kyle/mcp \
+		proto/mcp/v1/*.proto
+
+proto-lint:
+	buf lint
+	buf breaking --against '.git#branch=master,subdir=proto'
+
+clean:
+	rm -f mcp mcp-agent
+
+all: vet lint test mcp mcp-agent