chore(format): prettier sweep across develop

Mostly table column normalisation under docs/audit/ + planning, object-
literal expansion in src/lib/ai/coach/snapshot.ts after the W4 F6 Apple
Health metric block landed, and small wrap/unwrap line adjustments in
the device + APNs routes / tests touched across W3/W4/W5 sessions.
No behavioural change.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/api/devices/route.ts

@@ -114,10 +114,7 @@ export const POST = apiHandler(async (request: NextRequest) => {
           deviceId: existingApns.id,
         },
       });
-      return apiError(
-        "APNs token already registered to another account",
-        409,
-      );
+      return apiError("APNs token already registered to another account", 409);
     }
   }