fix: add gemini 3.1 flash-lite support

docs/concepts/model-providers.md

@@ -104,8 +104,8 @@ OpenClaw ships with the pi‑ai catalog. These providers require **no**
 - Provider: `google`
 - Auth: `GEMINI_API_KEY`
 - Optional rotation: `GEMINI_API_KEYS`, `GEMINI_API_KEY_1`, `GEMINI_API_KEY_2`, `GOOGLE_API_KEY` fallback, and `OPENCLAW_LIVE_GEMINI_KEY` (single override)
-- Example models: `google/gemini-3.1-pro-preview`, `google/gemini-3-flash-preview`
-- Compatibility: legacy OpenClaw config using `google/gemini-3.1-flash-preview` is normalized to `google/gemini-3-flash-preview`
+- Example models: `google/gemini-3.1-pro-preview`, `google/gemini-3-flash-preview`, `google/gemini-3.1-flash-lite-preview`
+- Compatibility: legacy OpenClaw config using `google/gemini-3.1-flash-preview` is normalized to `google/gemini-3-flash-preview`, and bare `google/gemini-3.1-flash-lite` is normalized to `google/gemini-3.1-flash-lite-preview`
 - CLI: `openclaw onboard --auth-choice gemini-api-key`
 
 ### Google Vertex, Antigravity, and Gemini CLI

docs/gateway/configuration-reference.md

@@ -910,14 +910,15 @@ Time format in system prompt. Default: `auto` (OS preference).
 
 **Built-in alias shorthands** (only apply when the model is in `agents.defaults.models`):
 
-| Alias          | Model                           |
-| -------------- | ------------------------------- |
-| `opus`         | `anthropic/claude-opus-4-6`     |
-| `sonnet`       | `anthropic/claude-sonnet-4-5`   |
-| `gpt`          | `openai/gpt-5.2`                |
-| `gpt-mini`     | `openai/gpt-5-mini`             |
-| `gemini`       | `google/gemini-3.1-pro-preview` |
-| `gemini-flash` | `google/gemini-3-flash-preview` |
+| Alias               | Model                                  |
+| ------------------- | -------------------------------------- |
+| `opus`              | `anthropic/claude-opus-4-6`            |
+| `sonnet`            | `anthropic/claude-sonnet-4-6`          |
+| `gpt`               | `openai/gpt-5.4`                       |
+| `gpt-mini`          | `openai/gpt-5-mini`                    |
+| `gemini`            | `google/gemini-3.1-pro-preview`        |
+| `gemini-flash`      | `google/gemini-3-flash-preview`        |
+| `gemini-flash-lite` | `google/gemini-3.1-flash-lite-preview` |
 
 Your configured aliases always win over defaults.
 

docs/help/faq.md

@@ -2238,11 +2238,12 @@ Docs: [Models](/concepts/models), [Multi-Agent Routing](/concepts/multi-agent),
 Yes. OpenClaw ships a few default shorthands (only applied when the model exists in `agents.defaults.models`):
 
 - `opus` → `anthropic/claude-opus-4-6`
-- `sonnet` → `anthropic/claude-sonnet-4-5`
-- `gpt` → `openai/gpt-5.2`
+- `sonnet` → `anthropic/claude-sonnet-4-6`
+- `gpt` → `openai/gpt-5.4`
 - `gpt-mini` → `openai/gpt-5-mini`
 - `gemini` → `google/gemini-3.1-pro-preview`
 - `gemini-flash` → `google/gemini-3-flash-preview`
+- `gemini-flash-lite` → `google/gemini-3.1-flash-lite-preview`
 
 If you set your own alias with the same name, your value wins.