Move Code Agent, Actor, and Sandbox docs to Legacy section

Relocate deprecated doc sections from customize/ to legacy/ under
Customize OS nav. Add redirects for all old paths and update
cross-references in AGENTS.md and related mdx files.

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

AGENTS.md

@@ -256,7 +256,7 @@ Your cloud browser is already logged in!
 
 ***
 
-For more sandbox parameters and events, see [Sandbox Quickstart](https://docs.browser-use.com/customize/sandbox/quickstart).
+For more sandbox parameters and events, see [Sandbox Quickstart](https://docs.browser-use.com/legacy/sandbox/quickstart).
 
 # Agent Basics
 ```python  theme={null}
@@ -538,7 +538,7 @@ async def main():
 > Complete reference for all browser configuration options
 
 <Note>
-  The `Browser` instance also provides all [Actor](https://docs.browser-use.com/customize/actor/all-parameters) methods for direct browser control (page management, element interactions, etc.).
+  The `Browser` instance also provides all [Actor](https://docs.browser-use.com/legacy/actor/all-parameters) methods for direct browser control (page management, element interactions, etc.).
 </Note>
 
 ## Core Settings
@@ -798,7 +798,7 @@ The agent injects parameters by name matching, so using the wrong name will caus
 </Warning>
 
 <Note>
-  Use `browser_session` parameter in tools for deterministic [Actor](https://docs.browser-use.com/customize/actor/basics) actions.
+  Use `browser_session` parameter in tools for deterministic [Actor](https://docs.browser-use.com/legacy/actor/basics) actions.
 </Note>
 
 

docs/customize/browser/all-parameters.mdx

@@ -6,7 +6,7 @@ mode: "wide"
 ---
 
 <Note>
-The `Browser` instance also provides all [Actor](/customize/actor/all-parameters) methods for direct browser control (page management, element interactions, etc.).
+The `Browser` instance also provides all [Actor](/legacy/actor/all-parameters) methods for direct browser control (page management, element interactions, etc.).
 </Note>
 
 ## Core Settings

docs/customize/tools/basics.mdx

@@ -32,5 +32,5 @@ The agent injects parameters by name matching, so using the wrong name will caus
 </Warning>
 
 <Note>
-Use `browser_session` parameter in tools for deterministic [Actor](/customize/actor/basics) actions.
+Use `browser_session` parameter in tools for deterministic [Actor](/legacy/actor/basics) actions.
 </Note>

docs/docs.json

@@ -35,7 +35,51 @@
     },
     {
       "source": "/production",
-      "destination": "/customize/sandbox/quickstart"
+      "destination": "/legacy/sandbox/quickstart"
+    },
+    {
+      "source": "/customize/code-agent/basics",
+      "destination": "/legacy/code-agent/basics"
+    },
+    {
+      "source": "/customize/code-agent/output-format",
+      "destination": "/legacy/code-agent/output-format"
+    },
+    {
+      "source": "/customize/code-agent/exporting",
+      "destination": "/legacy/code-agent/exporting"
+    },
+    {
+      "source": "/customize/code-agent/all-parameters",
+      "destination": "/legacy/code-agent/all-parameters"
+    },
+    {
+      "source": "/customize/code-agent/example-products",
+      "destination": "/legacy/code-agent/example-products"
+    },
+    {
+      "source": "/customize/actor/basics",
+      "destination": "/legacy/actor/basics"
+    },
+    {
+      "source": "/customize/actor/examples",
+      "destination": "/legacy/actor/examples"
+    },
+    {
+      "source": "/customize/actor/all-parameters",
+      "destination": "/legacy/actor/all-parameters"
+    },
+    {
+      "source": "/customize/sandbox/quickstart",
+      "destination": "/legacy/sandbox/quickstart"
+    },
+    {
+      "source": "/customize/sandbox/events",
+      "destination": "/legacy/sandbox/events"
+    },
+    {
+      "source": "/customize/sandbox/all-parameters",
+      "destination": "/legacy/sandbox/all-parameters"
     },
     {
       "source": "/customize/supported-models",
@@ -176,18 +220,6 @@
               "customize/agent/all-parameters"
             ]
           },
-          {
-            "group": "Code Agent",
-            "icon": "code",
-            "isDefaultOpen": false,
-            "pages": [
-              "customize/code-agent/basics",
-              "customize/code-agent/output-format",
-              "customize/code-agent/exporting",
-              "customize/code-agent/all-parameters",
-              "customize/code-agent/example-products"
-            ]
-          },
           {
             "group": "Browser",
             "icon": "window",
@@ -220,16 +252,6 @@
               "customize/skills/basics"
             ]
           },
-          {
-            "group": "Actor",
-            "icon": "terminal",
-            "isDefaultOpen": false,
-            "pages": [
-              "customize/actor/basics",
-              "customize/actor/examples",
-              "customize/actor/all-parameters"
-            ]
-          },
           {
             "group": "Integration",
             "icon": "plug",
@@ -240,13 +262,36 @@
             ]
           },
           {
-            "group": "Sandbox",
-            "icon": "box",
+            "group": "Legacy",
+            "icon": "box-archive",
             "isDefaultOpen": false,
             "pages": [
-              "customize/sandbox/quickstart",
-              "customize/sandbox/events",
-              "customize/sandbox/all-parameters"
+              {
+                "group": "Code Agent",
+                "pages": [
+                  "legacy/code-agent/basics",
+                  "legacy/code-agent/output-format",
+                  "legacy/code-agent/exporting",
+                  "legacy/code-agent/all-parameters",
+                  "legacy/code-agent/example-products"
+                ]
+              },
+              {
+                "group": "Actor",
+                "pages": [
+                  "legacy/actor/basics",
+                  "legacy/actor/examples",
+                  "legacy/actor/all-parameters"
+                ]
+              },
+              {
+                "group": "Sandbox",
+                "pages": [
+                  "legacy/sandbox/quickstart",
+                  "legacy/sandbox/events",
+                  "legacy/sandbox/all-parameters"
+                ]
+              }
             ]
           }
         ]