Move UI to BoardUI with slate + salmon theme; add PDF plan export

- Adopt BoardUI (Pro init): theme tokens, Inter, .dark mode, Button,
  SegmentedControl, Meter, Skeleton and ThemeToggle; remap the app's
  color aliases onto BoardUI tokens and swap lucide for Remix icons
- Retint BoardUI's neutral ramp to cool slate with a salmon accent;
  drop the dotted background; raise muted text contrast
- Simplify the landing page and remove the overlap explorer
- Planner: explicit "I have this" toggle on grocery lines, pantry panel
  above the menu with the staples list spelled out, sticky aisle
  header fix, and a "Download PDF" plan export (jsPDF, lazy-loaded)
- Recipes: replace the family cabbage soup with Cade's Cabbage Soup
  (adds Bone-In Ham Steak to the catalog); remove Ham, Bean & Cabbage Soup
- Remove unused BoardUI components, dependencies and exports

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/lib/recipes/steps/caydens-corner.ts

@@ -119,11 +119,15 @@ export const CAYDENS_CORNER_STEPS: Record<string, string[]> = {
     "Stir in lime juice. Serve topped with avocado and cilantro.",
   ],
   "family-ham-cabbage-potato-soup": [
-    "Combine potatoes, 3¼ cups water, ham, celery, and onion in a stockpot. Bring to a boil.",
-    "Simmer over medium heat until potatoes are tender, 10 to 15 minutes. Stir in chicken bouillon, pepper, and salt.",
-    "Melt butter in a separate saucepan over medium-low heat. Add flour; cook and stir until thick, about 1 minute.",
-    "Whisk in milk; cook and stir until thick, 4 to 5 minutes.",
-    "Pour the milk mixture into the stockpot; cook and stir until warmed through.",
+    "Wash the cabbage and remove any dirt, and peel back any dead / dying leaves.",
+    "Chop the cabbage into large leaf chunks and put them in a large pot.",
+    "Wash 5 whole potatoes and chop them into large cubes. They do not need to be peeled.",
+    "Put the potatoes in the pot on top of the cabbage.",
+    "Put in the chicken broth until it is filled to a high level.",
+    "Boil down the cabbage and potatoes for 20-30 minutes, or until the cabbage is a soft texture.",
+    "Cut up your ham steak into medium-sized cubes and put in the pot. Add the ham bone as well for extra flavor.",
+    "Continue the slow boil for an additional 15 minutes before taking off heat.",
+    "Put in a generous amount of pepper and salt to taste.",
   ],
   "family-indian-chicken-curry": [
     "Heat olive oil in a skillet over medium heat. Sauté onion until lightly browned.",