fix: correct subagent tools inheritance docs (#3601)

Author: open-swe[bot]

src/oss/deepagents/subagents.mdx

@@ -55,7 +55,7 @@ For most use cases, define subagents as dictionaries matching the @[`SubAgent`]
 | `name` | `str` | Required. Unique identifier for the subagent. The main agent uses this name when calling the `task()` tool. The subagent name becomes metadata for `AIMessage`s and for streaming, which helps to differentiate between agents. |
 | `description` | `str` | Required. Description of what this subagent does. Be specific and action-oriented. The main agent uses this to decide when to delegate. |
 | `system_prompt` | `str` | Required. Instructions for the subagent. Custom subagents must define their own. Include tool usage guidance and output format requirements.<br></br>Does not inherit from main agent. |
-| `tools` | `list[Callable]` | Required. Tools the subagent can use. Custom subagents specify their own. Keep this minimal and include only what's needed.<br></br>Does not inherit from main agent. |
+| `tools` | `list[Callable]` | Optional. Tools the subagent can use. Keep this minimal and include only what's needed.<br></br>Inherits from main agent by default. When specified, overrides the inherited tools entirely. |
 | `model` | `str` \| `BaseChatModel` | Optional. Overrides the main agent's model. Omit to use the main agent's model.<br></br>Inherits from main agent by default. You can pass either a model identifier string like `'openai:gpt-5.4'` (using the `'provider:model'` format) or a LangChain chat model object (`init_chat_model("gpt-5.4")` or `ChatOpenAI(model="gpt-5.4")`). |
 | `middleware` | `list[Middleware]` | Optional. Additional middleware for custom behavior, logging, or rate limiting.<br></br>Does not inherit from main agent. |
 | `interrupt_on` | `dict[str, bool]` | Optional. Configure [human-in-the-loop](/oss/deepagents/human-in-the-loop) for specific tools. Subagent value overrides main agent. Requires checkpointer.<br></br>Inherits from main agent by default. Subagent value overrides the default. |
@@ -72,7 +72,7 @@ For most use cases, define subagents as dictionaries matching the @[`SubAgent`]
 | `name` | `str` | Required. Unique identifier for the subagent. The main agent uses this name when calling the `task()` tool. The subagent name becomes metadata for `AIMessage`s and for streaming, which helps to differentiate between agents. |
 | `description` | `str` | Required. Description of what this subagent does. Be specific and action-oriented. The main agent uses this to decide when to delegate. |
 | `system_prompt` | `str` | Required. Instructions for the subagent. Custom subagents must define their own. Include tool usage guidance and output format requirements.<br></br>Does not inherit from main agent. |
-| `tools` | `list[Callable]` | Required. Tools the subagent can use. Custom subagents specify their own. Keep this minimal and include only what's needed.<br></br>Does not inherit from main agent. |
+| `tools` | `list[Callable]` | Optional. Tools the subagent can use. Keep this minimal and include only what's needed.<br></br>Inherits from main agent by default. When specified, overrides the inherited tools entirely. |
 | `model` | `str` \| `BaseChatModel` | Optional. Overrides the main agent's model. Omit to use the main agent's model.<br></br>Inherits from main agent by default. You can pass either a model identifier string like `'openai:gpt-5.4'` (using the `'provider:model'` format) or a LangChain chat model object (`await initChatModel("gpt-5.4")` or `new ChatOpenAI({ model: "gpt-5.4" })`). |
 | `middleware` | `list[Middleware]` | Optional. Additional middleware for custom behavior, logging, or rate limiting.<br></br>Does not inherit from main agent. |
 | `interrupt_on` | `dict[str, bool]` | Optional. Configure [human-in-the-loop](/oss/deepagents/human-in-the-loop) for specific tools. Subagent value overrides main agent. Requires checkpointer.<br></br>Inherits from main agent by default. Subagent value overrides the default. |