feat: adopt eyrie opengateway provider + update submodule pointer (#160)

- external/eyrie: 1f085f5 -> 6de314a (feat: add OpenGateway provider)
- go.mod: github.com/GrayCodeAI/eyrie v0.1.4-0...1f085f5 -> v0.1.4-0...6de314a
- RegisteredProviderCount 26 -> 27
- documentedProviderCount 26 -> 27 (rootCmd.Long uses the runtime count)

Sync of submodule gitlink + go.mod require + count assertions, per the
eyrie/submodule change. OpenGateway is an OpenAI-compatible pay-as-you-go
gateway (MiMo/Gemini/MiniMax/Qwen/Kimi/GLM/NVIDIA/Inclusion/Tencent/Z-AI/Novita)
whose GET /v1/models listing is public and returns inline pricing.

After merge, verify parity passes and hawk CI (incl. test-race and docker) is green.

Author: Patel230

cmd/manpage_test.go

@@ -7,7 +7,7 @@ import (
 )
 
 func TestProviderCountCopyMatchesRegistry(t *testing.T) {
-	const documentedProviderCount = 26
+	const documentedProviderCount = 27
 	if got := registeredProviderCount(); got != documentedProviderCount {
 		t.Fatalf("registered providers = %d, update documented count %d and this assertion", got, documentedProviderCount)
 	}

external/eyrie

@@ -368,7 +368,7 @@ func IsCatalogCacheRequired(err error) bool {
 // RegisteredProviderCount exposes Eyrie's first-class provider count through
 // Hawk's single provider-runtime boundary.
 func RegisteredProviderCount() int {
-	return 26
+	return 27
 }
 
 func SecretStoreName() string { return eyrieengine.SecretStoreName() }