feat: wire the fastCRW provider into the plugin entry

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/index.ts

@@ -1,2 +1,19 @@
-// ponytail: placeholder so `tsc` has an input; replaced by the plugin entry.
-export {}
+import { Plugin } from "@opencode/plugin"
+import { resolveConfig } from "./config.ts"
+import { search } from "./search.ts"
+
+export default Plugin.define({
+  id: "fastcrw.websearch",
+  async setup(ctx) {
+    // Throws on bad options so a misconfigured plugin fails loudly instead of silently searching elsewhere.
+    const config = resolveConfig(ctx.options, process.env)
+    await ctx.websearch.transform((editor) => {
+      editor.add({
+        id: "fastcrw",
+        name: "fastCRW",
+        execute: ({ query }, { signal }) => search(config, query, signal),
+      })
+      editor.default.set("fastcrw")
+    })
+  },
+})