Updated some docs stuff

[markheydon]

No description provided.

[markheydon]

Well that was a nightmare trying to get to work!!!! Examples on the action GitHub repo README were totally wrong it seems!

[Copilot]

Pull request overview

This pull request adds documentation infrastructure and tooling to the repository, including automated spellchecking and Copilot-specific Clean Architecture guidelines.

• Adds automated spellcheck workflow using pyspelling to validate Markdown files
• Introduces Copilot instructions documenting Clean Architecture patterns and dependency rules
• Configures custom wordlist for technical terms specific to the project

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.wordlist.txt	Defines custom dictionary of technical terms (Blazor, DTOs, etc.) for spellcheck exclusion
.spellcheck.yml	Configures pyspelling for Markdown files using British English and custom wordlist
.github/workflows/spellcheck.yml	Adds GitHub Actions workflow to run spellcheck on push and PR to main branch
.github/copilot-instructions.md	Documents Clean Architecture layer boundaries, dependency rules, and AI agent requirements
UnmessyExample.slnx	Removes copilot-instructions.md reference from solution file (now in .github folder)

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