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/Utils/InputValidator.swift

@@ -16,19 +16,17 @@ struct InputValidator {
     
     // MARK: - Peer ID Validation
     
-    /// Validates a peer ID from any source
+    /// Validates a peer ID from any source (short 16-hex, full 64-hex, or internal alnum/-/_ up to 64)
     static func validatePeerID(_ peerID: String) -> Bool {
-        // Handle both hex-encoded (from network) and alphanumeric (internal) formats
-        if peerID.count == Limits.hexPeerIDLength {
-            // Network format: 16 hex characters
-            return peerID.allSatisfy { $0.isHexDigit }
-        } else {
-            // Internal format: alphanumeric + dash/underscore
-            let validCharset = CharacterSet.alphanumerics.union(CharacterSet(charactersIn: "-_"))
-            return peerID.count > 0 &&
-                   peerID.count <= Limits.maxPeerIDLength &&
-                   peerID.rangeOfCharacter(from: validCharset.inverted) == nil
-        }
+        // Accept short routing IDs (16-hex)
+        if PeerIDResolver.isShortID(peerID) { return true }
+        // Accept full Noise key hex (64-hex)
+        if PeerIDResolver.isNoiseKeyHex(peerID) { return true }
+        // Internal format: alphanumeric + dash/underscore up to 64
+        let validCharset = CharacterSet.alphanumerics.union(CharacterSet(charactersIn: "-_"))
+        return !peerID.isEmpty &&
+               peerID.count <= Limits.maxPeerIDLength &&
+               peerID.rangeOfCharacter(from: validCharset.inverted) == nil
     }
     
     // MARK: - String Content Validation