docs(website): add provider pages and refresh docs

packages/website/src/routes/opencode.tsx

@@ -1,22 +1,4 @@
 import { createFileRoute } from "@tanstack/react-router";
-import { LandingPage } from "~/components/landing-page";
-import { pageMeta } from "~/meta";
+import { agentRouteOptions } from "~/components/agent-route";
 
-export const Route = createFileRoute("/opencode")({
-  head: () => ({
-    meta: pageMeta(
-      "OpenCode Mobile App – Code from anywhere | Paseo",
-      "Run OpenCode from your phone. Launch agents, watch them work, and ship code from wherever you are. Self-hosted, open source, your code stays local.",
-    ),
-  }),
-  component: OpenCodePage,
-});
-
-function OpenCodePage() {
-  return (
-    <LandingPage
-      title="Run OpenCode from your phone"
-      subtitle="Launch agents, check on builds, and ship code from anywhere. Same setup, same machine, just not at your desk."
-    />
-  );
-}
+export const Route = createFileRoute("/opencode")(agentRouteOptions("opencode"));