M.empty do not exists and is on the base utilsSigned-off-by: Tomas Slusny <slusnucky@gmail.com>

Use more accurate token prediction when tiktoken core is not availableSigned-off-by: Tomas Slusny <slusnucky@gmail.com>

The previous implementation used vim.fn.strwidth() to calculate the end column for header highlighting. This function returns the display width, which can differ from the byte length when multi-byte characters like emojis are present.Since the end_col for extmarks expects a byte-based index, this caused the highlighting to be applied incorrectly.This patch corrects the issue by using the byte length (#header_value) for the end_col of the highlight extmark, while still using vim.fn.strwidth() for virt_text_win_col to ensure correct visual alignment of UI elements.Fixes#1384

* docs: update README.md [skip ci]* docs: update .all-contributorsrc [skip ci]* [pre-commit.ci] auto fixes from pre-commit.com hooksfor more information, seehttps://pre-commit.ci---------Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

- Remove redundant directory creation and scheduling from file write- Ensure token file directory is created only when saving token- Refactor GitHub device flow polling to use recursion instead of loop- Add logging for token save location- Restore chat overlay when message is empty- Clear status and message notifications after authorizationCloses#1388Signed-off-by: Tomas Slusny <slusnucky@gmail.com>

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