Fix PMP ID handling and generation

[dozro]

Description

This pull request addresses issues with ID handling and generation for Personas by standardizing the way short IDs are generated and used throughout the codebase. It replaces the use of crypto.randomUUID() with a new utility function, generateShortId, ensuring IDs are shorter and more consistent. Additionally, it improves command parsing for Persona-related commands.

ID Generation Improvements

• Introduced a new utility function generateShortId in src/app/utils/shortIdGen.ts to generate short, consistent IDs by truncating UUIDs.
• Replaced all instances of crypto.randomUUID() with generateShortId(5) when creating new Persona or member IDs in PerMessageProfileOverview.tsx and PKitCommandMessageHandler.ts, ensuring all IDs are now short and uniform.

Command Parsing Enhancements

• Updated regular expressions in useCommands.ts to use \S+ instead of \w+ for Persona IDs, allowing IDs with a broader set of characters and improving robustness of command parsing.

Fixes #582

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

AI disclosure:

• Partially AI assisted (clarify which code was AI assisted and briefly explain what it does).
• Fully AI generated (explain what all the generated code does in moderate detail).

No AI was used for this PR