### What problem does this PR solve?
Feat: Add background color to GraphRag configuration #4980
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Add ParsedPageCard component #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Jump from the chunk page to the dataset page #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Add an id to the dataset testing route #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### 🛠 Fixes `KeyError: 'content'` when using `stream=False`
#### 🔍 Problem
When calling the chat API with `stream=False`, the code attempts to
access `msg[-1]["content"]` without verifying if the key exists. This
causes a `KeyError` when the message structure does not contain
`"content"`.
This issue was discussed in
[#4885](https://github.com/infiniflow/ragflow/issues/4885), where we
analyzed the root cause. The error does not occur with `stream=True`, as
the response is processed differently.
#### ✅ Solution
- **Logging Fix:**
- Before accessing `msg[-1]["content"]`, we check if the key exists.
- If it does not exist, a default value (`"[content not available]"`) is
used to prevent errors.
- **Structural Fix in `msg` Construction:**
- Ensured that every message in `msg` contains the `"content"` key, even
if empty.
- This fixes the issue at its root and ensures consistent behavior
between `stream=True` and `stream=False`.
#### 🔄 Impact
- Prevents the `KeyError` without affecting normal application flow.
- Ensures the integrity of the `msg` structure, avoiding future
failures.
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Bind data to datasets page #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Display Think for Deepseek R1 model #4903
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Add ChatInput component #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix: After deleting all conversation lists, the chat input box can still
be used for input. #4907
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Add LlmSettingFieldItems component #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
Use `json.loads()` instead.
### What problem does this PR solve?
Using `eval()` can lead to code injections. I think this loads a JSON
field, right? If yes, why is this done via `eval()` and not
`json.loads()`?
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Use `np.float32()` instead.
### What problem does this PR solve?
Using `eval()` can lead to code injections.
I think `eval()` is only used to parse a floating point number here.
This change preserves the correct behavior if the string `"None"` is
supplied. But if that behavior isn't intended then this part could be
just deleted instead, since `np.float32()` is parsing strings anyway:
```Python
if isinstance(scale, str):
scale = eval(scale)
```
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
if *.xls file is too large, .eg >50M, I get error.
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Fix: Knowledge base page crashes when network connection is lost. #4894
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Add hatPromptEngine component #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Add ChatBasicSetting component #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix categorize agent input content not format error
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: wangrui <wangrui@haima.me>
### What problem does this PR solve?
Feat: Add Sessions component #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Modify the Preset configurations item style to distinguish it from
other fields #4844
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix: Fail to open console with Firefox #4816
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Remove begin's width from agent templates #4764
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Fixed the issue where the prompt always displayed the initial
value when switching between different generate operators #4764
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Add VariablePickerMenuPlugin to select variables in the prompt
text box by menu #4764
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix: The requested interface timeout will cause the page to crash #4787
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
…e error " message
### What problem does this PR solve?
optimize TenantLLMService.increase_usage Performance
### Type of change
- [x] Performance Improvement
Co-authored-by: che_shuai <che_shuai@massclouds.com>
