Initial commit: FA Design System source files

Copy of the Funeral Arranger design system components, theme, tokens,
and Storybook config from the original Parsons project. Pre-upgrade
baseline with React 18, MUI v5, Storybook 8.

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

tokens/component/input.json

@@ -0,0 +1,42 @@
+{
+  "input": {
+    "$description": "Input component tokens — sizing and spacing per size variant. Colours use semantic tokens via MUI theme palette, consistent with Button approach.",
+    "height": {
+      "$type": "dimension",
+      "$description": "Input field heights. Medium matches Button large (48px) for alignment in search bars. Small matches Button medium (40px) for compact layouts.",
+      "sm": { "$value": "40px", "$description": "Small — compact forms, admin layouts, matches Button medium height" },
+      "md": { "$value": "48px", "$description": "Medium (default) — standard forms, matches Button large for alignment" }
+    },
+    "paddingX": {
+      "$type": "dimension",
+      "$description": "Horizontal padding inside the input field.",
+      "default": { "$value": "{spacing.3}", "$description": "12px — inner horizontal padding matching Figma design" }
+    },
+    "paddingY": {
+      "$type": "dimension",
+      "$description": "Vertical padding inside the input field per size.",
+      "sm": { "$value": "{spacing.2}", "$description": "8px — compact vertical padding for small size" },
+      "md": { "$value": "{spacing.3}", "$description": "12px — standard vertical padding for medium size" }
+    },
+    "fontSize": {
+      "$type": "dimension",
+      "$description": "Font size of the input value and placeholder text.",
+      "default": { "$value": "{fontSize.base}", "$description": "16px — prevents iOS auto-zoom on focus, matches Figma" }
+    },
+    "borderRadius": {
+      "$type": "dimension",
+      "$description": "Border radius for the input field.",
+      "default": { "$value": "{borderRadius.sm}", "$description": "4px — subtle rounding, consistent with Figma design" }
+    },
+    "gap": {
+      "$type": "dimension",
+      "$description": "Vertical gap between label, input field, and helper text.",
+      "default": { "$value": "{spacing.2}", "$description": "8px — vertical rhythm between label/input/helper, slightly more generous than Figma's 6px for readability" }
+    },
+    "iconSize": {
+      "$type": "dimension",
+      "$description": "Dimensions for leading/trailing icons inside the input.",
+      "default": { "$value": "20px", "$description": "20px — icon size inside input field, matches Figma trailing icon" }
+    }
+  }
+}