Refactor/repo hardening 01 (#462)

* BinaryProtocol: add optional padding control; BitchatPacket API for padded/unpadded bytes; BLEService: use unpadded encoding and remove ad-hoc unpadding on BLE writes

* BLEService: balance BLE padding — pad Noise handshake/encrypted frames; leave public/announce/leave unpadded; keep fragmentation consistent with chosen padding

* BLEService: replace Timer with DispatchSourceTimer on bleQueue; NostrTransport: cache placeholder NoiseEncryptionService to avoid reallocation

* Unify peerID validation: InputValidator handles 16-hex, 64-hex, or alnum-/_; NoiseSecurityValidator now delegates to InputValidator

* UI: use standard green for geohash toolbar badge and count (less bright in light mode)

* UI: standardize geohash sheet green to app standard (dark: system green, light: darker green) for buttons and checkmark

* Docs: align BinaryProtocol compression docs to zlib; Logs: reduce NostrTransport DELIVERED ack logs to debug to cut noise

* Tests: add InputValidator peerID coverage and BinaryProtocol padding round-trip/length tests

* Project: ensure Xcode project reflects new tests (references added)

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Co-authored-by: jack <jackjackbits@users.noreply.github.com>

bitchat/Noise/NoiseSecurityConsiderations.swift

@@ -53,13 +53,9 @@ struct NoiseSecurityValidator {
         return data.count <= NoiseSecurityConstants.maxHandshakeMessageSize
     }
     
-    /// Validate peer ID format
+    /// Validate peer ID format using unified validator
     static func validatePeerID(_ peerID: String) -> Bool {
-        // Peer ID should be reasonable length and contain valid characters
-        let validCharset = CharacterSet.alphanumerics.union(CharacterSet(charactersIn: "-_"))
-        return peerID.count > 0 && 
-               peerID.count <= 64 && 
-               peerID.rangeOfCharacter(from: validCharset.inverted) == nil
+        return InputValidator.validatePeerID(peerID)
     }
 }