Remove ticket 047 (implemented: unified style presets, colour + layout as one concept)

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XFUNZwCvz3kcod3352ZR2o

tickets/047-style-presets-as-full-layout-not-just-colors.md

@@ -1,49 +0,0 @@
-# 047 — Treat presets as full style makeovers (not just color schemes) in UI and impl
-
-## Summary
-
-Tickets 012 and 020 already unified the *data model* for colour schemes
-and custom CSS: `src/settings.rs` stores both built-in `ColorScheme`
-variants and `CssEntry` (`Imported`/`Linked`) as equally-selectable themes
-via `custom_theme_id`, and the doc comment at `src/settings.rs:44` notes
-ticket 020 removed the old "use as theme" vs. "always-on overlay"
-distinction. However, built-in presets themselves
-(`webapp/src/lib/themes.ts` `BUILTIN_THEMES`) are still defined purely as
-`ThemeVars` records of `--c-*` color variables — they can only ever
-restyle colors, not layout — so the underlying premise of the wishlist
-("presets are literally entire style makeovers that just happen to look
-like color changes") isn't actually true of the built-ins yet, and the
-settings UI may still read as "pick a colour scheme, optionally add CSS on
-top" rather than "pick one style, which can be as small as a palette or as
-large as a full redesign."
-
-## Scope
-
-- Audit the settings UI (`webapp/src/lib/useSettingsPanel.ts`,
-  `webapp/src/App.tsx:126` and wherever the panel is rendered) for
-  language/layout that still implies "colour scheme" and "CSS" are two
-  separate features, and rework it to present a single list of
-  interchangeable style presets (built-in or user-provided), any of which
-  may be pure-palette or a full layout override.
-- Confirm/ensure a user-provided style is not constrained to variable
-  overrides — i.e. an imported/linked CSS entry can target arbitrary
-  selectors and restructure layout, not just override `--c-*` variables
-  (verify against `generateThemeCss`/`parseThemeCss` in
-  `webapp/src/lib/themes.ts` and how `CssEntry` is applied to the
-  document).
-- No new built-in presets need to be layout-altering; this ticket is
-  about removing the artificial ceiling and the UI framing, not about
-  shipping a redesigned built-in theme.
-
-## Acceptance criteria
-
-- Settings UI presents colour schemes and custom/imported CSS as one
-  unified list of selectable "styles," with no leftover UI copy or layout
-  implying they're separate concepts.
-- A user-supplied CSS entry can override layout-affecting rules (not just
-  color variables) and have it take effect, verified manually with a
-  sample stylesheet that changes more than colors.
-
-## Depends on
-
-None (builds on tickets 012, 020 — already merged).