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>

go.mod

@@ -0,0 +1,10 @@
+module git.wntrmute.dev/kyle/mcp
+
+go 1.25.7
+
+require github.com/spf13/cobra v1.10.2
+
+require (
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.9 // indirect
+)