docs: add Deploy Sourcebot landing page

Add a root Deploy Sourcebot page linking the Docker Compose and Kubernetes
deployment options, set it as the group root, and redirect the old
/docs/deployment/overview path to it.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: msukkari

docs/docs.json

@@ -41,6 +41,7 @@
                             "docs/overview",
                             {
                                 "group": "Deploy Sourcebot",
+                                "root": "docs/deployment/deploy-sourcebot",
                                 "pages": [
                                     "docs/deployment/docker-compose",
                                     "docs/deployment/k8s"
@@ -250,6 +251,10 @@
         "strict": false
     },
     "redirects": [
+        {
+            "source": "/docs/deployment/overview",
+            "destination": "/docs/deployment/deploy-sourcebot"
+        },
         {
             "source": "/docs/features/search/overview",
             "destination": "/docs/features/search/code-search"

docs/docs/deployment/deploy-sourcebot.mdx

@@ -0,0 +1,16 @@
+---
+title: "Deploy Sourcebot"
+---
+
+Sourcebot runs entirely in your infrastructure. Your code, AI inputs/outputs, personal data, and all other sensitive data never leave your environment.
+
+<CardGroup cols={2}>
+  <Card title="Docker Compose" icon="docker" href="/docs/deployment/docker-compose">
+    The fastest way to get started. Deploy Sourcebot with a single command.
+  </Card>
+  <Card title="Kubernetes (Helm)" icon="dharmachakra" href="/docs/deployment/k8s">
+    Deploy Sourcebot into your Kubernetes cluster using the official Helm chart.
+  </Card>
+</CardGroup>
+
+Not sure how much to provision? See the [sizing guide](/docs/deployment/sizing-guide) for resource recommendations.