Add designlang public-shell pack; tighten auth capture checks

Ran authenticated extract against coulomb.social; session metadata
matched anonymous Bubble defaults, so treat docs/design-extract as a
public shell baseline (PROVENANCE.md). Capture script now refuses to
overwrite storage-state.json with thin anonymous sessions.

docs/design-extract/tokens/tailwind.config.js

@@ -0,0 +1,109 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  theme: {
+    extend: {
+    colors: {
+        primary: {
+            '50': 'hsl(34, 68%, 97%)',
+            '100': 'hsl(34, 68%, 94%)',
+            '200': 'hsl(34, 68%, 86%)',
+            '300': 'hsl(34, 68%, 76%)',
+            '400': 'hsl(34, 68%, 64%)',
+            '500': 'hsl(34, 68%, 50%)',
+            '600': 'hsl(34, 68%, 40%)',
+            '700': 'hsl(34, 68%, 32%)',
+            '800': 'hsl(34, 68%, 24%)',
+            '900': 'hsl(34, 68%, 16%)',
+            '950': 'hsl(34, 68%, 10%)',
+            DEFAULT: '#d08728'
+        },
+        'neutral-50': '#000000',
+        'neutral-100': '#171717',
+        'neutral-200': '#ffffff',
+        'neutral-300': '#616161',
+        'neutral-400': '#e5e5e5',
+        background: '#ffffff',
+        foreground: '#000000'
+    },
+    fontFamily: {
+        body: [
+            'Arial',
+            'sans-serif'
+        ],
+        font2: [
+            'Inter',
+            'sans-serif'
+        ]
+    },
+    fontSize: {
+        '8': [
+            '8px',
+            {
+                lineHeight: '11.2px'
+            }
+        ],
+        '12': [
+            '12px',
+            {
+                lineHeight: '16.8px'
+            }
+        ],
+        '14': [
+            '14px',
+            {
+                lineHeight: '19.6px'
+            }
+        ],
+        '16': [
+            '16px',
+            {
+                lineHeight: 'normal'
+            }
+        ],
+        '18': [
+            '18px',
+            {
+                lineHeight: '25.2px'
+            }
+        ],
+        '32': [
+            '32px',
+            {
+                lineHeight: '44.8px'
+            }
+        ],
+        '48': [
+            '48px',
+            {
+                lineHeight: '67.2px'
+            }
+        ],
+        '13.3333': [
+            '13.3333px',
+            {
+                lineHeight: 'normal'
+            }
+        ]
+    },
+    spacing: {
+        '1': '2px',
+        '16': '32px',
+        '34': '68px'
+    },
+    borderRadius: {
+        sm: '4px',
+        md: '8px'
+    },
+    boxShadow: {
+        md: 'rgb(97, 97, 97) 2px 2px 8px 0px'
+    },
+    container: {
+        center: true,
+        padding: '32px'
+    },
+    maxWidth: {
+        container: '1080px'
+    }
+},
+  },
+};