Add an interactive Tree view (pan/zoom genealogy chart)

Researched how FamilySearch/Geni/MyHeritage lay out trees (switchable pedigree/portrait/fan, an interactive canvas with pan/zoom + click-to-recenter, gender colors, birth-death years) and built a real Tree page on the MIT d3 library family-chart instead of a flat list. Ancestors + descendants around a focus person, click any card to recenter, drag to pan, scroll to zoom — scales to large imported trees. Tree is now the first per-tree sidebar item and the default when opening a tree; People keeps the searchable directory + add/edit.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: Justin Paul <justin@jpaul.me>

frontend/package.json

@@ -10,23 +10,24 @@
     "gen:api": "openapi-typescript ./openapi.json -o ./lib/api/schema.d.ts --default-non-nullable false"
   },
   "dependencies": {
-    "next": "^15.1.0",
-    "react": "^19.0.0",
-    "react-dom": "^19.0.0",
-    "openapi-fetch": "^0.13.0",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
-    "tailwind-merge": "^2.6.0",
-    "lucide-react": "^0.469.0"
+    "family-chart": "^0.9.0",
+    "lucide-react": "^0.469.0",
+    "next": "^15.1.0",
+    "openapi-fetch": "^0.13.0",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
+    "tailwind-merge": "^2.6.0"
   },
   "devDependencies": {
-    "typescript": "^5.7.0",
+    "@tailwindcss/postcss": "^4.0.0",
     "@types/node": "^22.10.0",
     "@types/react": "^19.0.0",
     "@types/react-dom": "^19.0.0",
-    "tailwindcss": "^4.0.0",
-    "@tailwindcss/postcss": "^4.0.0",
+    "openapi-typescript": "^7.5.0",
     "postcss": "^8.4.49",
-    "openapi-typescript": "^7.5.0"
+    "tailwindcss": "^4.0.0",
+    "typescript": "^5.7.0"
   }
 }