refactor(logging): use JSON.stringify for all object logging

Replace collapsed object logging with JSON.stringify to ensure full
object details are visible when console logs are copied/pasted.

This affects all settings persistence logging:
- Loading settings from database
- Saving settings to database
- API calls to server
- Cache updates

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps/web/src/app/arcade/matching/context/RoomMemoryPairsProvider.tsx

@@ -252,10 +252,17 @@ export function RoomMemoryPairsProvider({ children }: { children: ReactNode }) {
   // Settings are scoped by game name to preserve settings when switching games
   const mergedInitialState = useMemo(() => {
     const gameConfig = roomData?.gameConfig as Record<string, any> | null | undefined
-    console.log('[RoomMemoryPairsProvider] Loading settings from database:', {
-      gameConfig,
-      roomId: roomData?.id,
-    })
+    console.log(
+      '[RoomMemoryPairsProvider] Loading settings from database:',
+      JSON.stringify(
+        {
+          gameConfig,
+          roomId: roomData?.id,
+        },
+        null,
+        2
+      )
+    )
 
     if (!gameConfig) {
       console.log('[RoomMemoryPairsProvider] No gameConfig, using initialState')
@@ -264,7 +271,10 @@ export function RoomMemoryPairsProvider({ children }: { children: ReactNode }) {
 
     // Get settings for this specific game (matching)
     const savedConfig = gameConfig.matching as Record<string, any> | null | undefined
-    console.log('[RoomMemoryPairsProvider] Saved config for matching:', savedConfig)
+    console.log(
+      '[RoomMemoryPairsProvider] Saved config for matching:',
+      JSON.stringify(savedConfig, null, 2)
+    )
 
     if (!savedConfig) {
       console.log('[RoomMemoryPairsProvider] No saved config for matching, using initialState')
@@ -278,11 +288,18 @@ export function RoomMemoryPairsProvider({ children }: { children: ReactNode }) {
       difficulty: savedConfig.difficulty ?? initialState.difficulty,
       turnTimer: savedConfig.turnTimer ?? initialState.turnTimer,
     }
-    console.log('[RoomMemoryPairsProvider] Merged state:', {
-      gameType: merged.gameType,
-      difficulty: merged.difficulty,
-      turnTimer: merged.turnTimer,
-    })
+    console.log(
+      '[RoomMemoryPairsProvider] Merged state:',
+      JSON.stringify(
+        {
+          gameType: merged.gameType,
+          difficulty: merged.difficulty,
+          turnTimer: merged.turnTimer,
+        },
+        null,
+        2
+      )
+    )
 
     return merged
   }, [roomData?.gameConfig])
@@ -558,10 +575,17 @@ export function RoomMemoryPairsProvider({ children }: { children: ReactNode }) {
             gameType,
           },
         }
-        console.log('[RoomMemoryPairsProvider] Saving gameType to database:', {
-          roomId: roomData.id,
-          updatedConfig,
-        })
+        console.log(
+          '[RoomMemoryPairsProvider] Saving gameType to database:',
+          JSON.stringify(
+            {
+              roomId: roomData.id,
+              updatedConfig,
+            },
+            null,
+            2
+          )
+        )
         updateGameConfig({
           roomId: roomData.id,
           gameConfig: updatedConfig,
@@ -597,10 +621,17 @@ export function RoomMemoryPairsProvider({ children }: { children: ReactNode }) {
             difficulty,
           },
         }
-        console.log('[RoomMemoryPairsProvider] Saving difficulty to database:', {
-          roomId: roomData.id,
-          updatedConfig,
-        })
+        console.log(
+          '[RoomMemoryPairsProvider] Saving difficulty to database:',
+          JSON.stringify(
+            {
+              roomId: roomData.id,
+              updatedConfig,
+            },
+            null,
+            2
+          )
+        )
         updateGameConfig({
           roomId: roomData.id,
           gameConfig: updatedConfig,
@@ -636,10 +667,17 @@ export function RoomMemoryPairsProvider({ children }: { children: ReactNode }) {
             turnTimer,
           },
         }
-        console.log('[RoomMemoryPairsProvider] Saving turnTimer to database:', {
-          roomId: roomData.id,
-          updatedConfig,
-        })
+        console.log(
+          '[RoomMemoryPairsProvider] Saving turnTimer to database:',
+          JSON.stringify(
+            {
+              roomId: roomData.id,
+              updatedConfig,
+            },
+            null,
+            2
+          )
+        )
         updateGameConfig({
           roomId: roomData.id,
           gameConfig: updatedConfig,

apps/web/src/hooks/useRoomData.ts

@@ -672,10 +672,17 @@ async function updateGameConfigApi(params: {
   roomId: string
   gameConfig: Record<string, unknown>
 }): Promise<void> {
-  console.log('[updateGameConfigApi] Sending PATCH to server:', {
-    url: `/api/arcade/rooms/${params.roomId}/settings`,
-    gameConfig: params.gameConfig,
-  })
+  console.log(
+    '[updateGameConfigApi] Sending PATCH to server:',
+    JSON.stringify(
+      {
+        url: `/api/arcade/rooms/${params.roomId}/settings`,
+        gameConfig: params.gameConfig,
+      },
+      null,
+      2
+    )
+  )
 
   const response = await fetch(`/api/arcade/rooms/${params.roomId}/settings`, {
     method: 'PATCH',
@@ -687,7 +694,7 @@ async function updateGameConfigApi(params: {
 
   if (!response.ok) {
     const errorData = await response.json()
-    console.error('[updateGameConfigApi] Server error:', errorData)
+    console.error('[updateGameConfigApi] Server error:', JSON.stringify(errorData, null, 2))
     throw new Error(errorData.error || 'Failed to update game config')
   }
 
@@ -712,7 +719,10 @@ export function useUpdateGameConfig() {
           gameConfig: variables.gameConfig,
         }
       })
-      console.log('[useUpdateGameConfig] Updated cache with new gameConfig:', variables.gameConfig)
+      console.log(
+        '[useUpdateGameConfig] Updated cache with new gameConfig:',
+        JSON.stringify(variables.gameConfig, null, 2)
+      )
     },
   })
 }