SDK sandbox provisioning: built-in providers, docs restructure, and quickstart overhaul

- Add built-in sandbox providers (local, docker, e2b, daytona, vercel, cloudflare) to the TypeScript SDK so users import directly instead of passing client instances
- Restructure docs: rename architecture to orchestration-architecture, add new architecture page for server overview, improve getting started flow
- Rewrite quickstart to be TypeScript-first with provider CodeGroup and custom provider accordion
- Update all examples to use new provider APIs
- Update persist drivers and foundry for new SDK surface

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pnpm-lock.yaml

@@ -154,13 +154,13 @@ importers:
       dockerode:
         specifier: latest
         version: 4.0.9
+      get-port:
+        specifier: latest
+        version: 7.1.0
       sandbox-agent:
         specifier: workspace:*
         version: link:../../sdks/typescript
     devDependencies:
-      '@types/dockerode':
-        specifier: latest
-        version: 4.0.1
       '@types/node':
         specifier: latest
         version: 25.5.0
@@ -1025,12 +1025,33 @@ importers:
         specifier: workspace:*
         version: link:../cli
     devDependencies:
+      '@cloudflare/sandbox':
+        specifier: '>=0.1.0'
+        version: 0.7.17(@opencode-ai/sdk@1.2.24)
+      '@daytonaio/sdk':
+        specifier: '>=0.12.0'
+        version: 0.151.0(ws@8.19.0)
+      '@e2b/code-interpreter':
+        specifier: '>=1.0.0'
+        version: 2.3.3
+      '@types/dockerode':
+        specifier: ^4.0.0
+        version: 4.0.1
       '@types/node':
         specifier: ^22.0.0
         version: 22.19.7
       '@types/ws':
         specifier: ^8.18.1
         version: 8.18.1
+      '@vercel/sandbox':
+        specifier: '>=0.1.0'
+        version: 1.8.1
+      dockerode:
+        specifier: '>=4.0.0'
+        version: 4.0.9
+      get-port:
+        specifier: '>=7.0.0'
+        version: 7.1.0
       openapi-typescript:
         specifier: ^6.7.0
         version: 6.7.6
@@ -11273,7 +11294,7 @@ snapshots:
       glob: 11.1.0
       openapi-fetch: 0.14.1
       platform: 1.3.6
-      tar: 7.5.6
+      tar: 7.5.7
 
   earcut@2.2.4: {}