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/graphs/graph.json

@@ -130457,4 +130457,4 @@
   ],
   "hyperedges": [],
   "built_at_commit": "a9c3304c4e5f6ab5cb7b7f3560b8258a1efa57f8"
-}
+}