macOS port: build, rendering, daemon, and mining fixes

Build & setup:
- Fix setup.sh and build.sh for macOS (bundle daemon, xmrig, sapling params, asmap.dat into .app)
- Fix CMakeLists.txt libsodium linking for macOS
- Fix incbin.h to use __DATA,__const section on macOS
- Remove vendored libsodium-1.0.18 source tree (use fetch script instead)
- Remove prebuilt-binaries/xmrig (replaced by xmrig-hac)
- Add .DS_Store to .gitignore

Rendering & UI:
- Use GLSL #version 150 and OpenGL 3.2 Core Profile on macOS
- Force dpiScale=1.0 on macOS to fix Retina double-scaling
- Set default window/UI opacity to 100% on Mac/Linux
- Add scroll fade shader guard for macOS GL compatibility
- Add ImGui error recovery around render loop and mining tab

Daemon & bootstrap:
- Fix getDragonXDataDir() to return ~/Library/Application Support/Hush/DRAGONX/ on macOS
- Fix isPortInUse() with connect() fallback (no /proc/net/tcp on macOS)
- Increase daemon watchdog timeout from 3s to 15s
- Add daemon status indicator (colored dot + label) in wizard bootstrap phases

Mining tab:
- Fix EmbeddedDaemon::getMemoryUsageMB() crash on macOS (was using Linux /proc)
- Fix XmrigManager::getMemoryUsageMB() to use ps on macOS instead of /proc
- Restructure RenderMiningTab with wrapper pattern for exception safety
- Fix default pool URL to include port (pool.dragonx.is:3433)

build.sh

@@ -864,6 +864,9 @@ TOOLCHAIN
         for f in dragonxd dragonx-cli dragonx-tx; do
             [[ -f "$daemon_dir/$f" ]] && { cp "$daemon_dir/$f" "$MACOS/"; chmod +x "$MACOS/$f"; info "  Bundled $f"; }
         done
+        for f in sapling-spend.params sapling-output.params; do
+            [[ -f "$daemon_dir/$f" ]] && { cp "$daemon_dir/$f" "$MACOS/"; info "  Bundled $f"; }
+        done
     elif ! $IS_CROSS; then
         # Native macOS: try standard paths
         local daemon_paths=(
@@ -884,8 +887,21 @@ TOOLCHAIN
         warn "prebuilt-binaries/dragonxd-mac/ not found — place macOS daemon binaries there for bundling"
     fi
 
-    # asmap.dat
-    find_asmap 2>/dev/null && cp "$ASMAP_DAT" "$RESOURCES/asmap.dat" && info "  Bundled asmap.dat"
+    # xmrig binary (from prebuilt-binaries/xmrig-hac/)
+    local XMRIG_MAC="$SCRIPT_DIR/prebuilt-binaries/xmrig-hac/xmrig"
+    if [[ -f "$XMRIG_MAC" ]]; then
+        cp "$XMRIG_MAC" "$MACOS/xmrig"
+        chmod +x "$MACOS/xmrig"
+        info "  Bundled xmrig"
+    else
+        warn "xmrig not found — mining unavailable in .app"
+    fi
+
+    # asmap.dat — placed in MacOS/ so the daemon finds it next to its binary
+    find_asmap 2>/dev/null && {
+        cp "$ASMAP_DAT" "$MACOS/asmap.dat"
+        info "  Bundled asmap.dat"
+    }
 
     # Bundle SDL3 dylib
     local sdl_dylib=""