Migrate module path from kyle/ to mc/ org

All import paths updated to git.wntrmute.dev/mc/. Bumps mcdsl to v1.2.0.

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

PKI-ENGINE-PLAN.md

@@ -4,14 +4,14 @@
 
 Metacrypt needs its first concrete engine implementation: the CA (PKI) engine. This provides X.509 certificate issuance for Metacircular infrastructure. A single root CA issues scoped intermediate CAs ("issuers"), which in turn issue leaf certificates. An unauthenticated public API serves CA/issuer certificates to allow systems to bootstrap TLS trust.
 
-Certificate generation uses the `certgen` package from `git.wntrmute.dev/kyle/goutils/certlib/certgen`.
+Certificate generation uses the `certgen` package from `git.wntrmute.dev/mc/goutils/certlib/certgen`.
 
 ## Implementation Order
 
 ### Step 1: Add goutils dependency
 
 **File: `go.mod`**
-- Add `git.wntrmute.dev/kyle/goutils` with local replace directive (same pattern as mcias)
+- Add `git.wntrmute.dev/mc/goutils` with local replace directive (same pattern as mcias)
 - Run `go mod tidy`
 
 ### Step 2: Update engine framework
@@ -150,7 +150,7 @@ engine/ca/{mount}/certs/{serial_hex}.json
 ### Step 7: Register CA factory
 
 **File: `cmd/metacrypt/server.go`**
-- Import `git.wntrmute.dev/kyle/metacrypt/internal/engine/ca`
+- Import `git.wntrmute.dev/mc/metacrypt/internal/engine/ca`
 - After creating `engineRegistry`, call `engineRegistry.RegisterFactory(engine.EngineTypeCA, ca.NewCAEngine)`
 
 ### Step 8: Tests