…n chat (#6634)

## 📝 Summary

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#123).
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This PR fixes the issue of premature client closing for all gemini
models which is a blocking issue for using gemini with chat.

<img width="504" height="949" alt="Screenshot 2025-10-01 at 8 06 50 PM"
src="https://github.com/user-attachments/assets/20c0d243-172a-454a-a65c-866a844aada5"
/>


## 🔍 Description of Changes

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problem addressed and how it was resolved. If applicable, provide before
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- Add _client variable in GoogleProvider
- Update `get_client()` to cache client when first invoked, then reuse
the cached client to ensure that between stream iters, the same
GoogleClient is used and and the client will not be closed prematurely.
- Also add ignore to return type error for google since it doesn't
affect functionality but throws a type error.

## 📋 Checklist

- [x] I have read the [contributor
guidelines](https://github.com/marimo-team/marimo/blob/main/CONTRIBUTING.md).
- [ ] For large changes, or changes that affect the public API: this
change was discussed or approved through an issue, on
[Discord](https://marimo.io/discord?ref=pr), or the community
[discussions](https://github.com/marimo-team/marimo/discussions) (Please
provide a link if applicable).
- [ ] I have added tests for the changes made.
- [x] I have run the code and verified that it works as expected.

## 📝 Summary

Provides mechanism to provide updates and news

<img width="1188" height="266" alt="image"
src="https://github.com/user-attachments/assets/4480d917-4715-4824-9677-f8c6cbf908d6"
/>

## 📝 Summary

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Only added for multi-cell (chat-panel, generate with AI) AI generation

## 🔍 Description of Changes

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## 📋 Checklist

- [x] I have read the [contributor
guidelines](https://github.com/marimo-team/marimo/blob/main/CONTRIBUTING.md).
- [ ] For large changes, or changes that affect the public API: this
change was discussed or approved through an issue, on
[Discord](https://marimo.io/discord?ref=pr), or the community
[discussions](https://github.com/marimo-team/marimo/discussions) (Please
provide a link if applicable).
- [x] I have added tests for the changes made.
- [x] I have run the code and verified that it works as expected.

Some of the refactors to `mpl` brought in starlette top-level which does
not work for work in wasm

---------

Co-authored-by: dylan <dylan@marimo.io>

This moves the AI tooltip from experimental to the AI 

<img width="1159" height="454" alt="Screenshot 2025-10-02 at 11 55
35 AM"
src="https://github.com/user-attachments/assets/334d13ce-a1b3-440c-8ecb-a834adbd626a"
/>
<img width="986" height="803" alt="Screenshot 2025-10-02 at 11 56 07 AM"
src="https://github.com/user-attachments/assets/cf535668-1b6e-4b86-8a34-cb041d9dafab"
/>

<img width="616" height="180" alt="image"
src="https://github.com/user-attachments/assets/d0e46932-3cb5-4a54-ac00-83a7b227ab28"
/>

…ges (#6638)

## 📝 Summary

fixes #6553

We overload import spec to hook in for various format types. If there's
a user file that matches an expected format type, we erroneously
attempted to register the formatter for that import. This PR fixes this
issue by introducing `marimo/_utils/site_packages.py` for utils to
detect collisions, and a `marimo check` rule for users to more easily
troubleshoot this issue in the future

<img width="1204" height="261" alt="image"
src="https://github.com/user-attachments/assets/0b4de0ae-7948-4f5b-97c7-47ccd5a1423b"
/>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

## 📝 Summary

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This PR doesn't change the chatState and how many chats we store, we can
probably do that in follow-ups.
Might be better to use cmdk for perf when searching but this seems to
work fine


https://github.com/user-attachments/assets/697c3441-5cea-413c-9ee3-b3809fb83d51

## 🔍 Description of Changes

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problem addressed and how it was resolved. If applicable, provide before
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## 📋 Checklist

- [x] I have read the [contributor
guidelines](https://github.com/marimo-team/marimo/blob/main/CONTRIBUTING.md).
- [ ] For large changes, or changes that affect the public API: this
change was discussed or approved through an issue, on
[Discord](https://marimo.io/discord?ref=pr), or the community
[discussions](https://github.com/marimo-team/marimo/discussions) (Please
provide a link if applicable).
- [x] I have added tests for the changes made.
- [x] I have run the code and verified that it works as expected.

Fixes #6652

Some browsers (or locales) are failing on `maximumFractionDigits`. This
finds the correct limit for the given locale

For marimo-base releases, we did not include the HTML file which breaks
export

Fixes #6650

AI Context Improvements

- Improved table context format: added sample values for columns and
inline formatting
- Styling of Resource's attached when using the agent (support
text/plain, markdown, and images)
- Reorganized completion sections with explicit ranking system (boosts
dont apply across sections, so need to rank the sections)
- Hide empty datasources from context menu

Various UI fixes
- Added hover states and improved visual hierarchy for resource and
resource-link blocks
- Implemented image preview popover for image resource links
- Added overflow handling to prevent horizontal scrolling in user
messages and tool notifications
- Fixed truncation for long accordion titles and adjusted z-index for
session tabs