chore: improve code spell checker

[riscait]

🙌 What's Done

• improve code spell checker

Pre-launch Checklist

• I have reviewed my own code (e.g., updated tests and documentation)

[gemini-code-assist]

Summary of Changes

Hello @riscait, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request streamlines the project's code spell checking by unifying all CSpell configurations into a single .cspell.yaml file, making it easier to manage and maintain. It also includes a minor but important typo correction in a utility function and general cleanup of documentation files, contributing to overall code quality and project tidiness.

Highlights

• Centralized Spell Checker Configuration: The CSpell configuration has been consolidated into a single .cspell.yaml file, replacing fragmented word lists and ignore paths previously spread across multiple files.
• Code Quality Improvement: A typo in the suppelementTimestamp method name within timestamp_supplementer.dart has been corrected to supplementTimestamp, improving code accuracy.
• Documentation Cleanup: Placeholder README.md files in packages/themes and packages/util have been simplified, and an outdated PlantUML sequence diagram (docs/reactive-sequence.pu) has been removed.

Ignored Files

• Ignored by pattern: .github/workflows/** (1)
  • .github/workflows/spell-check.yml

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[Copilot]

Pull request overview

This PR improves the project's spell checking setup by migrating from a VS Code-specific cSpell configuration to a centralized, tool-agnostic .cspell.yaml configuration file. This enables automated spell checking via GitHub Actions workflow.

• Consolidates spell checker dictionaries from separate files into a single YAML configuration
• Adds GitHub Actions workflow for automated spell checking on PRs and main branch
• Removes obsolete template content from README files and an unused PlantUML diagram
• Fixes a typo in a function name (suppelementTimestamp → supplementTimestamp)

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
.cspell.yaml	New centralized spell checker configuration with consolidated word lists and ignore patterns
.github/workflows/spell-check.yml	New GitHub Actions workflow to run cspell on Dart and Markdown files
.vscode/settings.json	Removed VS Code-specific cSpell configuration
.cspell/project-words.txt	Removed (words migrated to .cspell.yaml)
.cspell/framework-words.txt	Removed (words migrated to .cspell.yaml)
.cspell/organization-words.txt	Removed (words migrated to .cspell.yaml)
packages/util/README.md	Replaced template content with minimal package title
packages/themes/README.md	Replaced template content with minimal package title
packages/flutter_app/lib/util/json_converter/timestamp_supplementer.dart	Fixed spelling of function name
docs/reactive-sequence.pu	Removed unused PlantUML diagram file

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[gemini-code-assist]

Code Review

This pull request does a great job of consolidating the spell checker configuration into a single .cspell.yaml file, which improves maintainability. The typo fix and README cleanups are also good improvements.

I've left a comment on the new .cspell.yaml file with suggestions to sort the word list and remove a few redundant entries.

One thing that stands out is the removal of docs/reactive-sequence.pu. This file appears to contain useful architecture documentation (a PlantUML sequence diagram). If its removal is intentional, it would be helpful to add a note to the pull request description explaining why. If it was removed by mistake, it should be restored. I also noticed it contained a typo 'Rivderpod' which should be 'Riverpod'.

[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

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[Copilot]

Excluding all test directories from spell checking prevents catching typos in test code, test documentation, and test case names. Consider removing this exclusion or being more selective (e.g., only excluding test fixtures/snapshots).

Suggested change

- "**/test"