feat(depin): add bootstrap discovery, persistence, and live training monitor

Bootstrap node discovery (bootstrap.zig):
- Directed UDP discovery to known bootstrap nodes
- BootstrapPeer health tracking (trust score, failures, last_seen)
- Railway API discovery fallback (deferred)
- DNS seed resolver (deferred)

Cluster state persistence (persistence.zig):
- .tri-cluster.json with atomic writes (temp + rename)
- Backup rotation (.bak, .bak2)
- Peer quality scores for routing decisions
- NodeRole (coordinator/worker/storage) and NodeTier (free/staker/power/whale)

Live training monitor (train_live.zig):
- Real-time status via Railway logs API (not stale cache!)
- Detects real errors (DatasetNotFound, OOM, panic)
- Parses latest step and PPL from logs
- Action recommendations ONLY for workers with real errors

DePIN CLI (tri_depin.zig):
- `tri depin bootstrap` - bootstrap node management
- `tri depin peers` - peer discovery and health
- `tri depin cluster` - cluster state operations

Network layer (network.zig):
- UDP discovery socket with broadcast support
- Peer message protocol (ping/pong/discover/peer_list)
- GossipManager for peer propagation

Queen UI:
- ChatScreen: keyboard toolbar improvements
- CommentSidebar: minor fixes

φ² + 1/φ² = 3 = TRINITY | DePIN Phase 1

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Antigravity Agent

.gitignore

@@ -78,6 +78,7 @@ src/vibeec/bitnet_inference_test
 zig-macos-*/
 zig-linux-*/
 zig-windows-*/
+zig/
 *.tar.xz
 
 # Ralph logs (keep config)

apps/queen/QueenUI/Screens/Brain/ChatScreen.swift

@@ -308,21 +308,20 @@ struct ChatScreen: View {
             }
     }
 
-    // MARK: - Body Content (ZStack)
+    // MARK: - Body Content
 
     private var bodyContent: some View {
-        ZStack {
-            HStack(spacing: 0) {
-                if !focusMode { sidebarSection }
-                mainChatArea
-                if !focusMode { commentSidebarSection }
-            }
-            .animation(reduceMotion ? nil : .easeInOut(duration: 0.2), value: commentingMessage != nil)
-            .animation(reduceMotion ? nil : .easeInOut(duration: 0.3), value: focusMode)
-
+        HStack(spacing: 0) {
+            if !focusMode { sidebarSection }
+            mainChatArea
+            if !focusMode { commentSidebarSection }
+        }
+        .animation(reduceMotion ? nil : .easeInOut(duration: 0.2), value: commentingMessage != nil)
+        .animation(reduceMotion ? nil : .easeInOut(duration: 0.3), value: focusMode)
+        .overlay {
             if !focusMode { overlaysLayer }
-
-            // Focus mode exit pill
+        }
+        .overlay(alignment: .topTrailing) {
             if focusMode {
                 VStack {
                     HStack {
@@ -350,8 +349,8 @@ struct ChatScreen: View {
                 }
                 .transition(.opacity)
             }
-
-            // Share copied toast
+        }
+        .overlay(alignment: .bottom) {
             if showShareCopied {
                 VStack {
                     Spacer()
@@ -373,8 +372,8 @@ struct ChatScreen: View {
                 .transition(.opacity.combined(with: .move(edge: .bottom)))
                 .allowsHitTesting(false)
             }
-
-            // Multi-select floating action bar
+        }
+        .overlay(alignment: .bottom) {
             if isSelecting, !selectedMessageIDs.isEmpty {
                 VStack {
                     Spacer()
@@ -1133,7 +1132,11 @@ struct ChatScreen: View {
                 NetworkDashboard(client: client, modelManager: modelManager, store: store)
                     .frame(maxHeight: 220)
             }
-            .frame(width: LayoutConstants.sidebarIdealWidth)
+            .frame(
+                minWidth: LayoutConstants.sidebarMinWidth,
+                idealWidth: LayoutConstants.sidebarIdealWidth,
+                maxWidth: LayoutConstants.sidebarMaxWidth
+            )
             .background(TrinityTheme.bgSidebar)
             .transition(reduceMotion ? .opacity : .move(edge: .leading))
 

apps/queen/QueenUI/Screens/Brain/CommentSidebar.swift

@@ -117,7 +117,11 @@ struct CommentSidebar: View {
             .padding(.vertical, 10)
             .background(Color(hex: 0x111111))
         }
-        .frame(width: 280)
+        .frame(
+            minWidth: LayoutConstants.commentSidebarMinWidth,
+            idealWidth: LayoutConstants.commentSidebarIdealWidth,
+            maxWidth: LayoutConstants.commentSidebarMaxWidth
+        )
         .background(Color(hex: 0x0A0A0A))
         .transition(.move(edge: .trailing).combined(with: .opacity))
         .onAppear { commentFocused = true }