Fix diff text not rendering: LazyVStack in dual-axis ScrollView collapses row width; bump to 1.6

The diff data was fine, but the render collapsed: a LazyVStack inside a
dual-axis ScrollView([.horizontal, .vertical]) gets an unbounded proposal and
rows collapse to near-zero width — the green addition background rendered but
the monospaced text was laid out at ~0 width and disappeared. Use a plain
VStack inside nested vertical→horizontal ScrollViews (the stable pattern for
diff text) and give each line fixedSize(horizontal:) so the text isn't
clipped. Bump to 1.6.

GiteaPR.xcodeproj/project.pbxproj

@@ -187,7 +187,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 6;
+				CURRENT_PROJECT_VERSION = 7;
 				DEVELOPMENT_TEAM = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_KEY_CFBundleDisplayName = "GiteaPR";
@@ -197,7 +197,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.5;
+				MARKETING_VERSION = 1.6;
 				PRODUCT_BUNDLE_IDENTIFIER = com.bueso.giteapr;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;
@@ -211,7 +211,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 6;
+				CURRENT_PROJECT_VERSION = 7;
 				DEVELOPMENT_TEAM = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_KEY_CFBundleDisplayName = "GiteaPR";
@@ -221,7 +221,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.5;
+				MARKETING_VERSION = 1.6;
 				PRODUCT_BUNDLE_IDENTIFIER = com.bueso.giteapr;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;

GiteaPR/Detail/DiffView.swift

@@ -6,6 +6,12 @@ import SwiftUI
 /// `/pulls/{n}/files` (the field is absent), so the diff is fetched from the
 /// PR's `.diff` endpoint and the hunks belonging to this file are extracted.
 /// Added/deleted lines are colour-coded.
+///
+/// Rendering: a plain VStack inside nested vertical→horizontal ScrollViews.
+/// A LazyVStack inside a dual-axis `ScrollView([.horizontal, .vertical])` is a
+/// known-bad combination (rows collapse to ~zero width, so the background tint
+/// renders but the text disappears); VStack + nested scroll is the stable
+/// pattern for monospaced diff text.
 struct DiffView: View {
     let repo: Repository
     let prNumber: Int
@@ -24,13 +30,14 @@ struct DiffView: View {
                     systemImage: "doc.text",
                     description: Text(errorMessage))
             } else {
-                ScrollView([.horizontal, .vertical]) {
-                    LazyVStack(alignment: .leading, spacing: 0) {
-                        ForEach(lines) { line in
-                            diffLine(line)
+                ScrollView(.vertical) {
+                    ScrollView(.horizontal) {
+                        VStack(alignment: .leading, spacing: 0) {
+                            ForEach(lines) { line in
+                                diffLine(line)
+                            }
                         }
                     }
-                    .font(.caption.monospaced())
                 }
             }
         }
@@ -62,28 +69,30 @@ struct DiffView: View {
     }
 
     /// Extract the unified-diff block for `filename` from a multi-file diff.
-    /// Falls back to the whole diff if the header can't be matched.
     private func extractSection(named filename: String, from diff: String) -> String {
         let marker = "+++ b/\(filename)"
         guard let idx = diff.range(of: marker)?.upperBound else {
             return ""
         }
         let tail = String(diff[idx...])
-        // Find the next "diff --git " after this file's header to delimit it.
-        let rest = tail.dropFirst(marker.count)
-        if let next = rest.range(of: "\ndiff --git ") {
+        if let next = tail.range(of: "\ndiff --git ") {
             return String(tail[..<next.lowerBound])
         }
         return tail
     }
 
     private func diffLine(_ line: DiffLine) -> some View {
-        Text(line.text)
-            .frame(maxWidth: .infinity, alignment: .leading)
-            .padding(.horizontal, 8)
-            .padding(.vertical, 1)
-            .background(background(for: line.type))
-            .foregroundColor(foreground(for: line.type))
+        HStack(spacing: 0) {
+            Text(line.text)
+                .font(.caption.monospaced())
+                .foregroundColor(foreground(for: line.type))
+                .fixedSize(horizontal: true, vertical: false)
+                .frame(minWidth: 0, maxWidth: .infinity, alignment: .leading)
+        }
+        .padding(.horizontal, 8)
+        .padding(.vertical, 1)
+        .background(background(for: line.type))
+        .frame(maxWidth: .infinity, alignment: .leading)
     }
 
     private func background(for type: DiffLineType) -> Color {
@@ -120,9 +129,8 @@ struct DiffView: View {
 private enum DiffLineType { case context, addition, deletion, hunk, meta }
 
 private struct DiffLine: Identifiable {
-    // Stable id: a fresh UUID() on EVERY access (computed property) makes
-    // SwiftUI's ForEach re-identify on every render, churning the main thread
-    // and eventually crashing. Store it once.
+    // Stable id: generate once, not on every access (a fresh UUID each read
+    // churns SwiftUI's ForEach on the main thread and can crash).
     let id: UUID = UUID()
     let text: String
     let type: DiffLineType