Cleanup: remove dead code, normalize fingerprints, modernize share extension, trim test noise, and drop ‘preparing to share…’ message (#520)

* Remove dead code and artifacts: drop PeerManager, unused views/types; delete LegacyTestProtocolTypes; update .gitignore; purge TestResult.xcresult and build.log

* Tests: gate verbose prints under DEBUG; ChatViewModel: remove legacy fingerprint helper and rely on UnifiedPeerService

* Share Extension: migrate to UIKit + UTTypes; drop Social/SLComposeServiceViewController

* Remove 'preparing to share …' system message; send shared content immediately

* Inline comment cleanup: drop legacy 'removed' breadcrumbs across protocols, services, view model, and views

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

bitchat/Views/ContentView.swift

@@ -13,19 +13,9 @@ import UIKit
 
 // MARK: - Supporting Types
 
-// Pre-computed peer data for performance
-struct PeerDisplayData: Identifiable {
-    let id: String
-    let displayName: String
-    let isFavorite: Bool
-    let isMe: Bool
-    let hasUnreadMessages: Bool
-    let encryptionStatus: EncryptionStatus
-    let connectionState: BitchatPeer.ConnectionState
-    let isMutualFavorite: Bool
-}
+//
 
-// (Link previews removed; URLs are now clickable inline)
+//
 
 // MARK: - Main Content View
 
@@ -1382,23 +1372,7 @@ private struct PaymentChipView: View {
     }
 }
 
-// Helper view for rendering message content (plain, no hashtag/mention formatting)
-struct MessageContentView: View {
-    let message: BitchatMessage
-    let viewModel: ChatViewModel
-    let colorScheme: ColorScheme
-    let isMentioned: Bool
-    
-    var body: some View {
-        Text(message.content)
-            .font(.system(size: 14, design: .monospaced))
-            .fontWeight(isMentioned ? .bold : .regular)
-    }
-    
-    // MARK: - Helper Methods
-    
-    // buildTextSegments removed: content is rendered plain.
-}
+//
 
 // Delivery status indicator view
 struct DeliveryStatusView: View {