docs(sqlite-studio): connect Docs Cloud

.env.docs-cloud.example

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+# Docs Cloud
+# Create this key in Docs Cloud Settings -> API Keys.
+# Store the real value in production env, CI secrets, or your hosting provider.
+DOCS_CLOUD_API_KEY=

DOCS_CLOUD_SETUP.md

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+# Docs Cloud Setup
+
+This PR connects the existing docs app to Docs Cloud without replacing the docs content.
+
+## What this PR adds
+
+- `docs.json` configures the docs root, draft PR publishing, and analytics.
+- `.env.docs-cloud.example` documents the production environment variable the docs app needs.
+- Analytics is enabled in `docs.json`; keep it enabled unless the project intentionally opts out.
+
+## Finish the setup
+
+1. Open Docs Cloud and go to Settings -> API Keys.
+2. Create an API key with the default project, docs, and jobs scopes.
+3. Add the key to production as `DOCS_CLOUD_API_KEY`.
+4. If the host uses files, put the value in `.env.production`. If it uses managed secrets, add the same variable there instead.
+5. Do not commit the real key. Keep `.env.docs-cloud.example` as the checked-in reference.
+
+## Config review
+
+- Docs root: `apps/docs`
+- Publish base branch: `main`
+- Publish mode: `draft-pr`
+- Preview deploys: not requested by this setup PR
+- Analytics: enabled

docs.json

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+{
+  "$schema": "https://docs.farming-labs.dev/schema/docs.json",
+  "version": 1,
+  "docs": {
+    "mode": "frameworkless",
+    "runtime": "nextjs",
+    "root": "apps/docs"
+  },
+  "cloud": {
+    "apiKey": {
+      "env": "DOCS_CLOUD_API_KEY"
+    },
+    "preview": {
+      "enabled": false
+    },
+    "publish": {
+      "mode": "draft-pr",
+      "baseBranch": "main"
+    },
+    "analytics": {
+      "enabled": true,
+      "includeInputs": false
+    }
+  }
+}