feat(tor): Tor-by-default scaffold and integration

- Add TorManager with static/dlopen start, torrc generation, SOCKS probe
- Add TorURLSession; route Nostr/Web fetches via SOCKS proxy
- Add chat system messages for Tor status; show progress (macOS) and ready
- Disable ControlPort bootstrap monitor on iOS; keep it on macOS
- Make Tor waits non-blocking; avoid main-actor stalls on startup
- Queue & flush Nostr subscriptions on relay connect; skip duplicates
- Always rewrite torrc at launch to fix iOS container path mismatches
- Link libz; add project wiring for tor-nolzma.xcframework
- Minor fixes: SOCKS probe resumeOnce guard, entitlement for network.server (macOS)

project.yml

@@ -68,6 +68,10 @@ targets:
       - target: bitchatShareExtension
         embed: true
       - package: P256K
+      - framework: Frameworks/tor-nolzma.xcframework
+        embed: true
+        codeSign: true
+      - sdk: libz.tbd
         
   bitchat_macOS:
     type: application
@@ -100,7 +104,7 @@ targets:
       PRODUCT_BUNDLE_IDENTIFIER: chat.bitchat
       PRODUCT_NAME: bitchat
       INFOPLIST_FILE: bitchat/Info.plist
-      ENABLE_PREVIEWS: YES
+      ENABLE_PREVIEWS: NO
       SWIFT_VERSION: 5.0
       MACOSX_DEPLOYMENT_TARGET: 13.0
       CODE_SIGN_STYLE: Automatic
@@ -112,6 +116,10 @@ targets:
       CODE_SIGN_ENTITLEMENTS: bitchat/bitchat-macOS.entitlements
     dependencies:
       - package: P256K
+      - framework: Frameworks/tor-nolzma.xcframework
+        embed: true
+        codeSign: true
+      - sdk: libz.tbd
 
   bitchatShareExtension:
     type: app-extension