migrated custom tools to V2 plugin

.opencode/plugins/tools/git-worktree-create.ts

@@ -0,0 +1,22 @@
+import { $ } from "bun"
+import type { Info } from "@opencode/plugin/promise/tool"
+
+const gitWorktreeCreate: Info = {
+  name: "git-worktree-create",
+  description: "Create a git worktree for a branch or PR",
+  input: {
+    type: "object",
+    properties: {
+      branch: { type: "string", description: "Branch name or PR number" },
+    },
+    required: ["branch"],
+    additionalProperties: false,
+  },
+  async execute(input) {
+    const { branch } = input as { branch: string }
+    const result = await $`git worktree add ../worktrees/${branch}`.text()
+    return { content: result.trim() }
+  },
+}
+
+export default gitWorktreeCreate