Close [BS-2917](https://linear.app/affine-design/issue/BS-2917/【移动端】ios-唤起键盘的edge-case)
This PR fixes an issue where the keyboard cannot be re-triggered on iOS devices after the keyboard toolbar is hidden or executing some actions in keyboard toolbar.
Key changes:
- Preserve and restore the initial input mode when keyboard toolbar shows/hides
- Improve virtual keyboard service interface to better handle keyboard state
- Add proper cleanup of input mode state in component lifecycle
Close [BS-2758](https://linear.app/affine-design/issue/BS-2758).
Support [BS-2583](https://linear.app/affine-design/issue/BS-2583).
### What changed?
- Extend `ChatPanelInput` and `ChatBlockInput` from the same abstract class `AIChatInput` to reduce duplication of code.
- Unify the context interface of `chat-panel` and `chat-block`.
- Rename `items` field to `messages`.
- Remove duplicated type declare.
Support [BS-2583](https://linear.app/affine-design/issue/BS-2583).
### What changed?
- Move chat panel chip components to `/components` folder.
- Separate `chips` and `embeddingProgress` from ChatContextValue.
### Why make this change?
Seperate front end timeout errors from server side errors.
### What changed?
- Add `RequestTimeoutError` which extends from `BaseAIError`.
- Track as `request timeout` instead of `server error`.
### TL;DR
Split and enhance copilot e2e tests.
### What Changed
#### Tests Structure
The e2e tests are organized into the following categories:
1. **Basic Tests (`/basic`)**: Tests for verifying core AI capabilities including feature onboarding, authorization workflows, and basic chat interactions.
2. **Chat Interaction Tests (`/chat-with`)**: Tests for verifying the AI's interaction with various object types, such as attachments, images, text content, Edgeless elements, etc.
3. **AI Action Tests (`/ai-action`)**: Tests for verifying the AI's actions, such as text translation, gramma correction, etc.
4. **Insertion Tests (`/insertion`)**: Tests for verifying answer insertion functionality.
#### Tests Writing
Writing a copilot test cases is easier and clear
e.g.
```ts
test('support chat with specified doc', async ({ page, utils }) => {
// Initialize the doc
await focusDocTitle(page);
await page.keyboard.insertText('Test Doc');
await page.keyboard.press('Enter');
await page.keyboard.insertText('EEee is a cute cat');
await utils.chatPanel.chatWithDoc(page, 'Test Doc');
await utils.chatPanel.makeChat(page, 'What is EEee?');
await utils.chatPanel.waitForHistory(page, [
{
role: 'user',
content: 'What is EEee?',
},
{
role: 'assistant',
status: 'success',
},
]);
const { content } = await utils.chatPanel.getLatestAssistantMessage(page);
expect(content).toMatch(/EEee/);
});
```
#### Summary
||Cases|
|------|----|
|Before|19||
|After|151||
> Close BS-2769
donteatfriedrice
