style(13-03): apply Prettier formatting across repo

Mechanical reformat — no logic changes. 398 files changed, 19125
insertions(+), 16457 deletions(-). Prettier 3.8.4 with .prettierrc
(singleQuote:true, semi:true, tabWidth:2, trailingComma:all,
printWidth:100). Isolated per D-13-08 for reviewability.

.planning/intel/stack.json

@@ -4,15 +4,8 @@
     "commit": "99f59c3999f4ef992f01ef8f8a38c1d86d2f2a0f",
     "version": 3
   },
-  "languages": [
-    "TypeScript",
-    "SQL"
-  ],
-  "frameworks": [
-    "Hono 4.12.23",
-    "React 19",
-    "Drizzle ORM 0.45.2"
-  ],
+  "languages": ["TypeScript", "SQL"],
+  "frameworks": ["Hono 4.12.23", "React 19", "Drizzle ORM 0.45.2"],
   "tools": [
     "Vite 8.0.16",
     "vite-plugin-pwa 1.3.0",