feat: add multi-model cleanup tool and CLI command

- Bump `@opencode-ai/plugin` dependency from 1.2.27 to 1.3.0.
- Introduce `cleanup` command in CLI with force and remote options.
- Export `cleanupMultiModel` from core index.
- Register `multi-model-cleanup` tool in plugin and update exports.
- Add `CleanupOptions` and `CleanupResult` types to define cleanup behavior and results.

src/tools/cleanup.ts

@@ -0,0 +1,45 @@
+import { tool } from "@opencode-ai/plugin";
+import { cleanupMultiModel } from "../core/cleanup";
+
+/**
+ * OpenCode tool definition for cleaning up archive tags.
+ *
+ * Deletes archive tags (format: archive/*) from local and remote repositories.
+ * Used to clean up recovery tags created by the close command.
+ */
+export const cleanupTool = tool({
+  description:
+    "Delete all archive tags from local and optionally remote repository",
+  args: {
+    remote: tool.schema
+      .union([
+        tool.schema
+          .string()
+          .describe(
+            "Remote name to push deletions to. Error if doesn't exist.",
+          ),
+        tool.schema
+          .literal(false)
+          .describe("Only delete local tags, don't push to remote."),
+      ])
+      .optional()
+      .describe(
+        "Remote handling: string=specific remote, false=local-only, undefined=first available remote",
+      ),
+  },
+  async execute(args, _context) {
+    // In plugin mode, we skip confirmation (force=true)
+    const result = await cleanupMultiModel({
+      force: true,
+      remote: args.remote,
+    });
+
+    if (!result.success) {
+      return result.error!;
+    }
+
+    return (
+      result.instructions ?? `Deleted ${result.localTagsDeleted} local tags.`
+    );
+  },
+});