docs: reorganize and rename documentation files for consistency

- Apply consistent prefix naming: AE__, GUIDE__, PROJECT__, MODULE__, TODO__
- Move superseded/session docs to documentation/history/
- Migrate old/ directory contents to history/ with updated naming
- README.md: replace stale Modules section with accurate current routes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

documentation/history/OLD__README__Guidelines_v1.md

@@ -0,0 +1,80 @@
+# One Sky IT's Aether App - UI and UX Guidelines and Rules
+
+## General
+
+### Events
+
+#### layout header
+
+#### layout footer
+
+### Journals
+
+#### buttons
+
+##### alert
+
+##### info
+
+##### priority, flag
+
+##### warning, hide
+
+```css
+variant-soft-warning hover:variant-filled-warning
+```
+
+##### error, delete, disable
+
+```css
+variant-soft-error hover:variant-filled-error
+```
+
+#### new root layout header
+
+#### submenu
+
+```css
+flex flex-row items-center justify-center gap-1
+```
+
+#### new layout footer
+
+## Svelte 5 and SvelteKit v2 (framework and routing)
+
+## Tailwind 3.x CSS (styles)
+
+Waiting to upgrade to 4.x when ShadCN is ready. ShadCN is still being worked on as of late March 2025.
+
+- https://ui.shadcn.com/docs/tailwind-v4
+
+## CodeMirror 6.x (text and code editor)
+
+- https://codemirror.net
+
+## ShadCN (Tailwind Components)
+
+- https://ui.shadcn.com/docs
+- https://github.com/shadcn-ui/ui
+
+## Skeleton (Design System, Tailwind Components, Functional Components)
+
+Waiting to upgrade to Skeleton v3. Mostly because of the Tailwind 4.x upgrade needed for ShadCN.
+
+- https://www.skeleton.dev/docs/get-started/migrate-from-v2
+
+## Flowbite (Tailwind Components)
+
+## Lucide Icons (SVG Icons)
+
+- https://lucide.dev/icons/
+
+## Markdown
+
+Using marked for Markdown parsing.
+
+- https://marked.js.org/
+
+## Edra (TipTap based Rich Text Editor)
+
+- https://edra.tsuzat.com/