feat: register google-adk runtime (manifest + knownRuntimes + canvas)

Platform-side registration for the google-adk workspace runtime (RFC
internal#730). Required so a workspace with runtime: google-adk provisions
(Docker path) and is creatable from the canvas:
- manifest.json: workspace_templates entry → handler allowlist (loadRuntimesFromManifest)
- provisioner/registry.go: knownRuntimes += google-adk (else ErrUnresolvableRuntime); test count 4→5
- canvas CreateWorkspaceDialog: RUNTIME_OPTIONS + BASE_RUNTIME_TEMPLATE_IDS
- canvas runtime-names.ts: display name

Depends on molecule-ai-workspace-template-google-adk (image build/publish) +
controlplane runtime_image_pins (SaaS path) — tracked in RFC #730.
Verified: go build + provisioner/handlers tests green; manifest.json valid.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

canvas/src/components/CreateWorkspaceDialog.tsx

@@ -38,10 +38,11 @@ const DEFAULT_RUNTIME = "claude-code";
 const RUNTIME_OPTIONS = [
   { value: "claude-code", label: "Claude Code" },
   { value: "codex", label: "OpenAI Codex CLI" },
+  { value: "google-adk", label: "Google ADK" },
   { value: "hermes", label: "Hermes" },
   { value: "openclaw", label: "OpenClaw" },
 ];
-const BASE_RUNTIME_TEMPLATE_IDS = new Set(["claude-code-default", "codex", "hermes", "openclaw"]);
+const BASE_RUNTIME_TEMPLATE_IDS = new Set(["claude-code-default", "codex", "google-adk", "hermes", "openclaw"]);
 const DEFAULT_HEADLESS_INSTANCE_TYPE = "t3.medium";
 const DEFAULT_HEADLESS_ROOT_GB = 30;
 const DEFAULT_DISPLAY_INSTANCE_TYPE = "t3.xlarge";

canvas/src/lib/runtime-names.ts

@@ -5,6 +5,7 @@
 const RUNTIME_NAMES: Record<string, string> = {
   "claude-code": "Claude Code",
   codex: "Codex",
+  "google-adk": "Google ADK",
   hermes: "Hermes",
   openclaw: "OpenClaw",
   kimi: "Kimi",

manifest.json

@@ -29,6 +29,7 @@
     {"name": "hermes", "repo": "molecule-ai/molecule-ai-workspace-template-hermes", "ref": "main"},
     {"name": "openclaw", "repo": "molecule-ai/molecule-ai-workspace-template-openclaw", "ref": "main"},
     {"name": "codex", "repo": "molecule-ai/molecule-ai-workspace-template-codex", "ref": "main"},
+    {"name": "google-adk", "repo": "molecule-ai/molecule-ai-workspace-template-google-adk", "ref": "main"},
     {"name": "seo-agent", "repo": "molecule-ai/molecule-ai-workspace-template-seo-agent", "ref": "main"}
   ],
   "org_templates": [

workspace-server/internal/provisioner/registry.go

@@ -20,6 +20,7 @@ const defaultRegistryPrefix = "ghcr.io/molecule-ai"
 var knownRuntimes = []string{
 	"claude-code",
 	"codex",
+	"google-adk",
 	"hermes",
 	"openclaw",
 }

workspace-server/internal/provisioner/registry_test.go

@@ -53,8 +53,8 @@ func TestRuntimeImage_AllKnownRuntimes(t *testing.T) {
 		}
 	}
 	// Pin the count so adding a runtime requires explicit test acknowledgement.
-	if len(knownRuntimes) != 4 {
-		t.Errorf("knownRuntimes length = %d, want 4 (claude-code, codex, hermes, openclaw)", len(knownRuntimes))
+	if len(knownRuntimes) != 5 {
+		t.Errorf("knownRuntimes length = %d, want 5 (claude-code, codex, google-adk, hermes, openclaw)", len(knownRuntimes))
 	}
 }