feat(core): add command registry (#30624)

packages/core/test/command.test.ts

@@ -0,0 +1,56 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { CommandV2 } from "@opencode-ai/core/command"
+import { ModelV2 } from "@opencode-ai/core/model"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { testEffect } from "./lib/effect"
+
+const it = testEffect(CommandV2.locationLayer)
+
+describe("CommandV2", () => {
+  it.effect("applies command transforms and preserves later overrides", () =>
+    Effect.gen(function* () {
+      const command = yield* CommandV2.Service
+      const transform = yield* command.transform()
+      yield* transform((editor) => {
+        editor.update("review", (command) => {
+          command.template = "First"
+          command.description = "Review code"
+        })
+        editor.update("review", (command) => {
+          command.template = "Second"
+          command.model = {
+            id: ModelV2.ID.make("claude"),
+            providerID: ProviderV2.ID.make("anthropic"),
+            variant: ModelV2.VariantID.make("high"),
+          }
+        })
+      })
+
+      expect(yield* command.get("review")).toEqual(
+        new CommandV2.Info({
+          name: "review",
+          template: "Second",
+          description: "Review code",
+          model: {
+            id: ModelV2.ID.make("claude"),
+            providerID: ProviderV2.ID.make("anthropic"),
+            variant: ModelV2.VariantID.make("high"),
+          },
+        }),
+      )
+      expect(yield* command.list()).toEqual([
+        new CommandV2.Info({
+          name: "review",
+          template: "Second",
+          description: "Review code",
+          model: {
+            id: ModelV2.ID.make("claude"),
+            providerID: ProviderV2.ID.make("anthropic"),
+            variant: ModelV2.VariantID.make("high"),
+          },
+        }),
+      ])
+    }),
+  )
+})