Replace .log w/ explicit .debug/.error functions

This would make the intention more explicit so we can overload different logging types as well like keychain, security events, etc…

Search/Replace Strategies:

1.
Search regex: `SecureLogger\.log\(\s*(.*?),\s*category:\s*(.*?),\s*level:\s*\.(\w+)\s*\)`
Replace regex: `SecureLogger.$3($1, category: $2)`

Sample input:
```
SecureLogger.log(
    "🔄 Found favorite for '\(peerInfo.nickname)' by nickname, updating noise key",
    category: .session,
    level: .debug
)
```

Sample output:
`SecureLogger.debug("🔄 Found favorite for '\(peerInfo.nickname)' by nickname, updating noise key", category: .session)`

---

2.
Search regex: `SecureLogger\.log\((.*?)\)`
Replace regex: `SecureLogger.debug($1)` (as it’s the default level)

Sample input:
`SecureLogger.log("some text")`

Sample output:
`SecureLogger.debug("some text")`

---

3
Manual changes:
ChatViewModel line 5393 (commented code)
NostrRelayManager line 196 (commented code)
NostrRelayManager lines 346-350 (if/else logic)
NostrRelayManager line 371 (commented code)

bitchat/Services/NoiseEncryptionService.swift

@@ -270,7 +270,7 @@ final class NoiseEncryptionService {
         let deletedStatic = KeychainManager.shared.deleteIdentityKey(forKey: "noiseStaticKey")
         let deletedSigning = KeychainManager.shared.deleteIdentityKey(forKey: "ed25519SigningKey")
         SecureLogger.logKeyOperation("delete", keyType: "identity keys", success: deletedStatic && deletedSigning)
-        SecureLogger.log("Panic mode activated - identity cleared", category: .security, level: .warning)
+        SecureLogger.warning("Panic mode activated - identity cleared", category: .security)
         // Stop rekey timer
         stopRekeyTimer()
     }
@@ -573,7 +573,7 @@ final class NoiseEncryptionService {
             // Attempt to rekey the session
             do {
                 try sessionManager.initiateRekey(for: peerID)
-                SecureLogger.log("Key rotation initiated for peer: \(peerID)", category: .security, level: .debug)
+                SecureLogger.debug("Key rotation initiated for peer: \(peerID)", category: .security)
                 
                 // Signal that handshake is needed
                 onHandshakeRequired?(peerID)