feat: add bun-fullstack agent and update skills

.opencode/skills/tech-stack/elysiajs/integrations/cloudflare-worker.md

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+
+# Cloudflare Worker Integration
+
+## What It Is
+**Experimental** Cloudflare Worker adapter for Elysia.
+
+## Setup
+1. Install Wrangler:
+```bash
+wrangler init elysia-on-cloudflare
+```
+
+2. Apply adapter + compile:
+```typescript
+import { Elysia } from 'elysia'
+import { CloudflareAdapter } from 'elysia/adapter/cloudflare-worker'
+
+export default new Elysia({
+  adapter: CloudflareAdapter
+})
+  .get('/', () => 'Hello Cloudflare Worker!')
+  .compile()  // Required
+```
+
+3. Set compatibility date (min `2025-06-01`):
+```json
+// wrangler.json
+{
+  "name": "elysia-on-cloudflare",
+  "main": "src/index.ts",
+  "compatibility_date": "2025-06-01"
+}
+```
+
+4. Dev server:
+```bash
+wrangler dev
+# http://localhost:8787
+```
+
+No `nodejs_compat` flag needed.
+
+## Limitations
+1. `Elysia.file` + Static Plugin don't work (no `fs` module)
+2. OpenAPI Type Gen doesn't work (no `fs` module)
+3. Cannot define Response before server start
+4. Cannot inline values:
+```typescript
+// ❌ Throws error
+.get('/', 'Hello Elysia')
+
+// ✅ Works
+.get('/', () => 'Hello Elysia')
+```
+
+## Static Files
+Use Cloudflare's built-in static serving:
+```json
+// wrangler.json
+{
+  "assets": { "directory": "public" }
+}
+```
+
+Structure:
+```
+├─ public
+│  ├─ kyuukurarin.mp4
+│  └─ static/mika.webp
+```
+
+Access:
+- `http://localhost:8787/kyuukurarin.mp4`
+- `http://localhost:8787/static/mika.webp`
+
+## Binding
+Import env from `cloudflare:workers`:
+```typescript
+import { env } from 'cloudflare:workers'
+
+export default new Elysia({ adapter: CloudflareAdapter })
+  .get('/', () => `Hello ${await env.KV.get('my-key')}`)
+  .compile()
+```
+
+## AoT Compilation
+As of Elysia 1.4.7, AoT works with Cloudflare Worker. Drop `aot: false` flag.
+
+Cloudflare now supports Function compilation during startup.
+
+## pnpm
+Manual install:
+```bash
+pnpm add @sinclair/typebox openapi-types
+```