feat(ui): simple prompt history

[psychedelicious]

Summary

Simple prompt history

• Shows on Generate, Canvas, Upscaling and Video tabs.
• Search, clear all, hold shift to delete individual prompts.
• Stores the last 100 prompts.
• Persisted in the params slice.
• Prompts are added to history on successful invoke. The prompt, as the user typed it into the prompt box, is stored.
  • We cannot store post-dynamic-prompts.
  • We could store the user prompt with style preset baked in?

Screen.Recording.2025-09-12.at.11.53.22.pm.mov

Related Issues / Discussions

n/a

QA Instructions

Take it for a spin.

Merge Plan

Checklist

• The PR has a short but descriptive title, suitable for a changelog
• Tests added / updated (if applicable)
• ❗Changes to a redux slice have a corresponding migration
• Documentation added / updated (if applicable)
• Updated What's New copy (if doing a release after this PR)

[hipsterusername]

Looks great.

I anticipate some follow-up QOL things, but don't see them as blockers for core

[skunkworxdark]

A save to file or a copy all prompts to clipboard would be a nice addition to this at some point.