fix: add critical encrypted content cache diagnostics

Add comprehensive logging to trace JSON parse errors:

1. **EncryptedContentStorage logging**:
   - Log all getItem calls showing what's retrieved from IndexedDB
   - Log all setItem calls showing what's being stored
   - Shows first 100 chars of plaintext to identify corruption

2. **Gift wrap unlock state tracking**:
   - Count events with applesauce symbols attached
   - Count events found in persistedIds cache
   - Distinguish between symbol-based vs cache-based unlocking
   - Format: 'N unlocked (X symbols, Y cached), Z pending'

This will reveal if:
- Wrong data is being stored in IndexedDB (test strings instead of JSON)
- Timing issues where symbols aren't attached yet
- Cache not being properly populated from IndexedDB

src/services/db.ts

@@ -453,10 +453,22 @@ export const relayLivenessStorage = {
 export const encryptedContentStorage = {
   async getItem(id: string): Promise<string | null> {
     const entry = await db.encryptedContent.get(id);
-    return entry?.plaintext ?? null;
+    const plaintext = entry?.plaintext ?? null;
+
+    if (plaintext) {
+      console.log(
+        `[EncryptedContentStorage] getItem(${id.slice(0, 8)}): ${plaintext.slice(0, 100)}...`,
+      );
+    }
+
+    return plaintext;
   },
 
   async setItem(id: string, plaintext: string): Promise<void> {
+    console.log(
+      `[EncryptedContentStorage] setItem(${id.slice(0, 8)}): ${plaintext.slice(0, 100)}...`,
+    );
+
     await db.encryptedContent.put({
       id,
       plaintext,

src/services/gift-wrap.ts

@@ -799,12 +799,18 @@ class GiftWrapService {
     // Update decrypt states for new gift wraps
     let newUnlocked = 0;
     let newPending = 0;
+    let hasSymbolCount = 0;
+    let hasPersistedCount = 0;
+
     for (const gw of giftWraps) {
       if (!this.decryptStates.has(gw.id)) {
         const hasSymbol = isGiftWrapUnlocked(gw);
         const hasPersisted = this.persistedIds.has(gw.id);
         const isUnlocked = hasSymbol || hasPersisted;
 
+        if (hasSymbol) hasSymbolCount++;
+        if (hasPersisted) hasPersistedCount++;
+
         if (isUnlocked) {
           newUnlocked++;
         } else {
@@ -840,7 +846,7 @@ class GiftWrapService {
 
     dmInfo(
       "GiftWrap",
-      `Decrypt states: ${newUnlocked} unlocked, ${newPending} pending (total: ${this.decryptStates.size})`,
+      `Decrypt states: ${newUnlocked} unlocked (${hasSymbolCount} symbols, ${hasPersistedCount} cached), ${newPending} pending (total: ${this.decryptStates.size})`,
     );
 
     this.decryptStates$.next(new Map(this.decryptStates));