design_system: prune to the shipped handoff (drop scratch work)

The folder originally checked in three layers of cruft that are
worse than useless when this is fed to an LLM as design-system
context: a stale snapshot of frontend source that immediately
drifted from live, two exploration directions that didn't ship,
the Claude Design canvas harness, and duplicate copies of the
shipped Direction-B files.

Removed
- design_system/frontend/        — stale snapshot of frontend source.
  Already drifted (the live frontend has CommandPalette.tsx, the
  snapshot doesn't). For LLM context an outdated copy is worse than
  no copy — the live frontend/ is one path away anyway.
- direction-a.{css,jsx}          — "Tightened" exploration. Did not
  ship; documenting it as part of the design system would mislead
  any LLM trying to understand the current product.
- direction-c.{css,jsx}          — "Atmosphere" exploration. Same
  reason as A.
- app.jsx + design-canvas.jsx    — Claude Design canvas/harness
  scaffolding; only meaningful inside the Claude Design preview.
- top-level redesign/{direction-b.css, direction-b.jsx, tokens.css,
  shared.jsx, mock-data.jsx, tweaks-panel.jsx}
                                 — older / byte-identical copies of
  the polished versions in redesign/handoff/prototype/. The
  prototype tree is the source of truth.

Kept
- redesign/handoff/              — full workspace handoff: README,
  specs (chrome + 01-resume + 02-jobs + 03-jd + 04-analysis),
  screens/01-resume.png, prototype/ (Direction B as it shipped:
  direction-b.{css,jsx}, tokens.css, shared.jsx, mock-data.jsx,
  tweaks-panel.jsx, index.html, job-copilot-logo.png)
- redesign/landing/              — landing handoff: README +
  specs (chrome + hero + workbench + bento + final-cta)

Result: 56 files → 21 files, 942 KB → 356 KB. The remaining tree
is a clean authoritative reference an LLM (or a fresh Claude
session) can ingest as the current design system, instead of the
mixed scratchpad it was before.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: LEANDERANTONY