Scaffold CommiTea: yarn workspaces, Electron shell, core label schema, design system

- apps/desktop: electron-vite + React + Tailwind mapped onto design tokens
  (preflight off; tokens/base.css owns the reset); boots to a Reginald
  placeholder proving fonts/tokens/core wiring
- packages/core: pure TS; gitea label schema (est/*, p/*, deadline/hard)
  with pessimistic conflict resolution + 15 unit tests
- docs/design: full design handoff (tokens, 16 component contracts,
  interactive 14-screen prototype, Reginald voice rules)
- docs/PLAN.md: product plan (purity rule, pm-state repo, deterministic
  scheduler + Monte Carlo, directive log)
- Deliberate deviation from novelpad stack: no ElectricSQL/PGlite — local
  store is a rebuildable cache over gitea REST/webhooks (better-sqlite3
  in main process, arriving in P1)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/design/components/forms/Switch.js.txt

@@ -0,0 +1,50 @@
+import React from 'react';
+
+const CSS = `
+.ct-switch { display: inline-flex; align-items: center; gap: 9px; cursor: pointer; font: var(--text-body); color: var(--ink-1); }
+.ct-switch--disabled { opacity: 0.5; cursor: not-allowed; }
+.ct-switch__input { position: absolute; opacity: 0; width: 0; height: 0; }
+.ct-switch__track {
+  width: 34px; height: 20px; flex-shrink: 0;
+  border-radius: var(--radius-round);
+  background: var(--paper-3);
+  border: 1px solid var(--line-2);
+  position: relative;
+  transition: background var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out);
+}
+.ct-switch__track::after {
+  content: '';
+  position: absolute; top: 2px; left: 2px;
+  width: 14px; height: 14px; border-radius: 50%;
+  background: var(--surface-card);
+  box-shadow: var(--shadow-1);
+  transition: transform var(--duration-base) var(--ease-out);
+}
+.ct-switch__input:checked + .ct-switch__track { background: var(--accent); border-color: var(--accent); }
+.ct-switch__input:checked + .ct-switch__track::after { transform: translateX(14px); }
+.ct-switch__input:focus-visible + .ct-switch__track { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
+`;
+(function inject() {
+  if (typeof document !== 'undefined' && !document.getElementById('ct-switch-css')) {
+    const s = document.createElement('style'); s.id = 'ct-switch-css'; s.textContent = CSS;
+    document.head.appendChild(s);
+  }
+})();
+
+export function Switch({ label, checked, onChange, disabled = false, style, ...rest }) {
+  return (
+    <label className={`ct-switch${disabled ? ' ct-switch--disabled' : ''}`} style={style}>
+      <input
+        type="checkbox"
+        role="switch"
+        className="ct-switch__input"
+        checked={checked}
+        onChange={onChange}
+        disabled={disabled}
+        {...rest}
+      />
+      <span className="ct-switch__track"></span>
+      {label ? <span>{label}</span> : null}
+    </label>
+  );
+}