build(lite-backend): pin the SDXL backend to rustc 1.63 via rust-toolchain.toml

The pinned librustzcash / transitive crates (notably traitobject 0.1.0) rely on
pre-1.70 trait coherence and fail to compile on newer rustc (E0119), so the backend
must build with 1.63. Add a rust-toolchain.toml in the vendored backend so rustup
auto-selects 1.63 when cargo runs there — no more manual RUSTUP_TOOLCHAIN=1.63.0.
The pin is scoped to the backend tree (repo-root cargo keeps the default toolchain).
Also symlink the pin into the prepared build root so --silentdragonxlitelib-dir
builds honor it too.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

@@ -11,8 +11,8 @@ prebuilt-binaries/dragonxd-win/*
 !prebuilt-binaries/dragonxd-win/.gitkeep
 prebuilt-binaries/dragonxd-mac/*
 !prebuilt-binaries/dragonxd-mac/.gitkeep
-prebuilt-binaries/xmrig-hac/*
-!prebuilt-binaries/xmrig-hac/.gitkeep
+prebuilt-binaries/drg-xmrig/*
+!prebuilt-binaries/drg-xmrig/.gitkeep
 
 
 # External sources / toolchains (created by scripts/setup.sh)
@@ -33,7 +33,7 @@ imgui.ini
 *.bak*
 *.params
 asmap.dat
-/external/xmrig-hac
+/external/drg-xmrig
 /memory
 /todo.md
 /.github/

CMakeLists.txt

@@ -53,7 +53,6 @@ set_property(CACHE DRAGONX_LITE_BACKEND_LINK_MODE PROPERTY STRINGS imported)
 set(DRAGONX_LITE_BACKEND_ABI "sdxl-c-v1" CACHE STRING "Expected lite backend C ABI version")
 set(DRAGONX_LITE_BACKEND_SYMBOLS_FILE "" CACHE FILEPATH "Path to generated lite backend exported-symbol inventory")
 set(DRAGONX_LITE_BACKEND_MANIFEST "" CACHE FILEPATH "Optional path to generated lite backend artifact manifest")
-option(DRAGONX_LITE_BACKEND_REQUIRE_SIGNATURE "Require verified signature metadata in the lite backend artifact manifest" OFF)
 set(DRAGONX_LITE_BACKEND_REQUIRED_SYMBOLS
     litelib_wallet_exists
     litelib_initialize_new
@@ -126,36 +125,24 @@ if(DRAGONX_ENABLE_LITE_BACKEND)
     if(DRAGONX_LITE_BACKEND_MANIFEST AND NOT EXISTS "${DRAGONX_LITE_BACKEND_MANIFEST}")
         message(FATAL_ERROR "DRAGONX_LITE_BACKEND_MANIFEST does not exist: ${DRAGONX_LITE_BACKEND_MANIFEST}")
     endif()
-    if(DRAGONX_LITE_BACKEND_REQUIRE_SIGNATURE)
-        if(NOT DRAGONX_LITE_BACKEND_MANIFEST)
-            message(FATAL_ERROR "DRAGONX_LITE_BACKEND_REQUIRE_SIGNATURE requires DRAGONX_LITE_BACKEND_MANIFEST")
-        endif()
-        file(READ "${DRAGONX_LITE_BACKEND_MANIFEST}" DRAGONX_LITE_BACKEND_MANIFEST_JSON)
-        string(JSON DRAGONX_LITE_SIGNATURE_STATUS ERROR_VARIABLE DRAGONX_LITE_SIGNATURE_STATUS_ERROR GET "${DRAGONX_LITE_BACKEND_MANIFEST_JSON}" signature_verification verification_status)
-        if(DRAGONX_LITE_SIGNATURE_STATUS_ERROR)
-            message(FATAL_ERROR "DRAGONX_LITE_BACKEND_MANIFEST is missing signature verification status")
-        endif()
-        if(NOT DRAGONX_LITE_SIGNATURE_STATUS STREQUAL "verified")
-            message(FATAL_ERROR "DRAGONX_LITE_BACKEND_REQUIRE_SIGNATURE requires verified signature metadata")
-        endif()
-        string(JSON DRAGONX_LITE_SIGNATURE_VERIFIED_SHA ERROR_VARIABLE DRAGONX_LITE_SIGNATURE_VERIFIED_SHA_ERROR GET "${DRAGONX_LITE_BACKEND_MANIFEST_JSON}" signature_verification verified_artifact_sha256)
-        string(JSON DRAGONX_LITE_ARTIFACT_SHA ERROR_VARIABLE DRAGONX_LITE_ARTIFACT_SHA_ERROR GET "${DRAGONX_LITE_BACKEND_MANIFEST_JSON}" artifact sha256)
-        if(DRAGONX_LITE_SIGNATURE_VERIFIED_SHA_ERROR OR DRAGONX_LITE_ARTIFACT_SHA_ERROR)
-            message(FATAL_ERROR "DRAGONX_LITE_BACKEND_MANIFEST is missing artifact/signature SHA-256 metadata")
-        endif()
-        if(NOT DRAGONX_LITE_SIGNATURE_VERIFIED_SHA STREQUAL DRAGONX_LITE_ARTIFACT_SHA)
-            message(FATAL_ERROR "DRAGONX_LITE_BACKEND_MANIFEST signature metadata does not verify the artifact SHA-256")
-        endif()
-        string(JSON DRAGONX_LITE_SIGNATURE_PERFORMED ERROR_VARIABLE DRAGONX_LITE_SIGNATURE_PERFORMED_ERROR GET "${DRAGONX_LITE_BACKEND_MANIFEST_JSON}" signature_verification verification_performed)
-        if(DRAGONX_LITE_SIGNATURE_PERFORMED_ERROR OR NOT DRAGONX_LITE_SIGNATURE_PERFORMED)
-            message(FATAL_ERROR "DRAGONX_LITE_BACKEND_REQUIRE_SIGNATURE requires verification_performed=true")
-        endif()
-    endif()
+    # Note (F15-1): the former signature-metadata gate was removed. It trusted a
+    # "verification_status: verified" field that scripts/build-lite-backend-artifact.sh
+    # self-attested with no cryptographic check (the "verified" SHA was just the artifact's
+    # own SHA). The trust root is now build-from-source: that script builds the backend from
+    # the vendored in-tree source and refuses prebuilt artifacts, so the library linked here
+    # is the one built from reviewed source. The required-symbol inventory check above stays.
 
     add_library(dragonx_lite_backend UNKNOWN IMPORTED)
     set_target_properties(dragonx_lite_backend PROPERTIES
         IMPORTED_LOCATION "${DRAGONX_LITE_BACKEND_LIBRARY}"
     )
+    if(APPLE)
+        # The Rust backend's TLS stack (security-framework / core-foundation crates)
+        # references Secure Transport (SSL*) + CoreFoundation symbols. Link the frameworks
+        # that provide them, or the static lib leaves ~130 symbols undefined at link time.
+        set_property(TARGET dragonx_lite_backend APPEND PROPERTY
+            INTERFACE_LINK_LIBRARIES "-framework Security" "-framework CoreFoundation")
+    endif()
     if(DRAGONX_LITE_BACKEND_INCLUDE_DIR)
         if(NOT IS_DIRECTORY "${DRAGONX_LITE_BACKEND_INCLUDE_DIR}")
             message(FATAL_ERROR "DRAGONX_LITE_BACKEND_INCLUDE_DIR does not exist: ${DRAGONX_LITE_BACKEND_INCLUDE_DIR}")
@@ -304,6 +291,15 @@ FetchContent_Declare(
     GIT_REPOSITORY https://github.com/webmproject/libwebp.git
     GIT_TAG v1.4.0
     GIT_SHALLOW TRUE
+    # libwebp's cpu.cmake applies -mno-sse2/-mno-sse4.1 to its scalar reference DSP
+    # files when it can't probe SSE support. Under a macOS universal build
+    # (-arch arm64;x86_64) that probe fails, so the flags land on the x86_64 slice,
+    # where -mno-sse2 disables _Float16 and breaks the SDK's <math.h>. Neutralize
+    # those disable flags (SSE2 is x86_64 baseline). Portable + idempotent; a no-op
+    # for single-arch Linux/Windows/x86_64 builds. See cmake/patch-libwebp-simd.cmake.
+    PATCH_COMMAND ${CMAKE_COMMAND}
+        -DCPU_CMAKE=<SOURCE_DIR>/cmake/cpu.cmake
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/patch-libwebp-simd.cmake
 )
 set(WEBP_LINK_STATIC ON CACHE BOOL "" FORCE)
 set(WEBP_BUILD_ANIM_UTILS OFF CACHE BOOL "" FORCE)
@@ -1204,5 +1200,5 @@ message(STATUS "  Lite backend:   ${DRAGONX_LITE_BACKEND_READY}")
 message(STATUS "  Lite lib:       ${DRAGONX_LITE_BACKEND_LIBRARY}")
 message(STATUS "  Lite symbols:   ${DRAGONX_LITE_BACKEND_SYMBOLS_FILE}")
 message(STATUS "  Lite manifest:  ${DRAGONX_LITE_BACKEND_MANIFEST}")
-message(STATUS "  Lite signature: ${DRAGONX_LITE_BACKEND_REQUIRE_SIGNATURE}")
+message(STATUS "  Lite trust:     built-from-source (vendored third_party/silentdragonxlite)")
 message(STATUS "")

README.md

@@ -81,8 +81,8 @@ Download linux and windows binaries of latest releases and place in binary direc
 - prebuilt-binaries/dragonxd-win/
 - prebuilt-binaries/dragonxd-mac/
 
-**xmrig HAC fork** (https://git.dragonx.is/dragonx/xmrig-hac):
-- prebuilt-binaries/xmrig-hac/
+**DRG-XMRig fork** (https://git.dragonx.is/DragonX/drg-xmrig):
+- prebuilt-binaries/drg-xmrig/
 
 
 ## Build Steps

build.sh

@@ -131,7 +131,7 @@ fi
 # truth): the full-node app uses project() VERSION + DRAGONX_VERSION_SUFFIX; ObsidianDragonLite uses
 # DRAGONX_LITE_VERSION + DRAGONX_LITE_VERSION_SUFFIX.
 _cml="$SCRIPT_DIR/CMakeLists.txt"
-_full_ver=$(sed -n 's/^[[:space:]]*VERSION[[:space:]]\+\([0-9][0-9.]*\).*/\1/p' "$_cml" | head -1)
+_full_ver=$(sed -n 's/^[[:space:]]*VERSION[[:space:]][[:space:]]*\([0-9][0-9.]*\).*/\1/p' "$_cml" | head -1)
 _full_suffix=$(sed -n 's/^set(DRAGONX_VERSION_SUFFIX[[:space:]]*"\([^"]*\)").*/\1/p' "$_cml" | head -1)
 _lite_ver=$(sed -n 's/^set(DRAGONX_LITE_VERSION[[:space:]]*"\([^"]*\)").*/\1/p' "$_cml" | head -1)
 _lite_suffix=$(sed -n 's/^set(DRAGONX_LITE_VERSION_SUFFIX[[:space:]]*"\([^"]*\)").*/\1/p' "$_cml" | head -1)
@@ -386,7 +386,7 @@ build_release_linux() {
         [[ -f bin/sapling-output.params ]]   && cp bin/sapling-output.params "$dist_dir/"
     fi
     # Bundle xmrig for mining support
-    local XMRIG_LINUX="$SCRIPT_DIR/prebuilt-binaries/xmrig-hac/xmrig"
+    local XMRIG_LINUX="$SCRIPT_DIR/prebuilt-binaries/drg-xmrig/xmrig"
     [[ -f "$XMRIG_LINUX" ]] && { cp "$XMRIG_LINUX" "$dist_dir/"; chmod +x "$dist_dir/xmrig"; info "Bundled xmrig"; } || warn "xmrig not found — mining unavailable in zip"
     cp -r bin/res "$dist_dir/" 2>/dev/null || true
 
@@ -419,7 +419,7 @@ build_release_linux() {
         [[ -f bin/sapling-output.params ]] && cp bin/sapling-output.params "$APPDIR/usr/bin/"
     fi
     # Bundle xmrig for mining support
-    local XMRIG_LINUX_AI="$SCRIPT_DIR/prebuilt-binaries/xmrig-hac/xmrig"
+    local XMRIG_LINUX_AI="$SCRIPT_DIR/prebuilt-binaries/drg-xmrig/xmrig"
     [[ -f "$XMRIG_LINUX_AI" ]] && { cp "$XMRIG_LINUX_AI" "$APPDIR/usr/bin/"; chmod +x "$APPDIR/usr/bin/xmrig"; }
 
     # Desktop entry
@@ -478,18 +478,28 @@ APPRUN
     done
     [[ -f "$bd/_deps/sdl3-build/libSDL3.so" ]] && cp "$bd/_deps/sdl3-build/libSDL3.so"* "$APPDIR/usr/lib/" 2>/dev/null || true
 
-    # appimagetool
+    # appimagetool — pinned to a tagged release and SHA-256 verified before we exec it.
+    # The old "continuous" tag is a MOVING build fetched over the network and run on the release
+    # builder; a compromised/MITM'd artifact would execute here. Verify, or refuse to package.
+    local APPIMAGETOOL_URL="https://github.com/AppImage/appimagetool/releases/download/1.9.0/appimagetool-x86_64.AppImage"
+    local APPIMAGETOOL_SHA256="46fdd785094c7f6e545b61afcfb0f3d98d8eab243f644b4b17698c01d06083d1"
     local APPIMAGETOOL=""
     if command -v appimagetool &>/dev/null; then
-        APPIMAGETOOL="appimagetool"
-    elif [[ -f "$bd/appimagetool-x86_64.AppImage" ]]; then
-        APPIMAGETOOL="$bd/appimagetool-x86_64.AppImage"
+        APPIMAGETOOL="appimagetool"   # maintainer's own trusted system install
     else
-        info "Downloading appimagetool ..."
-        wget -q -O "$bd/appimagetool-x86_64.AppImage" \
-            "https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage"
-        chmod +x "$bd/appimagetool-x86_64.AppImage"
-        APPIMAGETOOL="$bd/appimagetool-x86_64.AppImage"
+        local at="$bd/appimagetool-x86_64.AppImage"
+        # Re-verify any cached copy too; a stale unverified download must not be trusted.
+        if [[ ! -f "$at" ]] || ! echo "${APPIMAGETOOL_SHA256}  ${at}" | sha256sum -c --status; then
+            info "Downloading appimagetool 1.9.0 (pinned) ..."
+            wget -q -O "$at" "$APPIMAGETOOL_URL"
+            if ! echo "${APPIMAGETOOL_SHA256}  ${at}" | sha256sum -c --status; then
+                err "appimagetool SHA-256 verification failed — refusing to use it"
+                rm -f "$at"
+                return 1
+            fi
+            chmod +x "$at"
+        fi
+        APPIMAGETOOL="$at"
     fi
 
     local ARCH
@@ -628,8 +638,8 @@ HDR
             info "Lite mode: skipping embedded daemon binaries"
         fi
 
-        # ── xmrig binary (from prebuilt-binaries/xmrig-hac/) ────────────────
-        local XMRIG_DIR="$SCRIPT_DIR/prebuilt-binaries/xmrig-hac"
+        # ── xmrig binary (from prebuilt-binaries/drg-xmrig/) ────────────────
+        local XMRIG_DIR="$SCRIPT_DIR/prebuilt-binaries/drg-xmrig"
         # The published DRG-XMRig archives ship the binary inside a versioned subdir, not as a flat
         # xmrig.exe. Extract it from the matching win-x64 zip if it isn't already staged — otherwise
         # the embed below never fires (HAS_EMBEDDED_XMRIG stays undefined) and the wallet ships with
@@ -781,7 +791,7 @@ HDR
     fi
 
     # Bundle xmrig for mining support
-    local XMRIG_WIN="$SCRIPT_DIR/prebuilt-binaries/xmrig-hac/xmrig.exe"
+    local XMRIG_WIN="$SCRIPT_DIR/prebuilt-binaries/drg-xmrig/xmrig.exe"
     [[ -f "$XMRIG_WIN" ]] && { cp "$XMRIG_WIN" "$dist_dir/"; info "Bundled xmrig.exe"; } || warn "xmrig.exe not found — mining unavailable in zip"
 
     cp -r bin/res "$dist_dir/" 2>/dev/null || true
@@ -891,8 +901,26 @@ build_release_mac() {
         fi
         info "macOS cross-compiler: $OSXCROSS_CXX (arch: $MAC_ARCH)"
     else
-        # Native macOS: build universal binary (arm64 + x86_64)
+        # Native macOS: build universal (arm64 + x86_64) by default. Override with
+        # DRAGONX_MAC_ARCHS (e.g. "x86_64").
+        MAC_ARCHS="${DRAGONX_MAC_ARCHS:-arm64;x86_64}"
+        # When linking the real lite backend, the app can only include architectures
+        # the backend static library actually provides. Its pinned ring 0.16.11 has no
+        # Apple-Silicon assembly, so that artifact is x86_64-only — constrain the app
+        # arch to the backend's (unless the user explicitly forced DRAGONX_MAC_ARCHS),
+        # otherwise the arm64 slice fails to link.
+        if $DO_LITE_BACKEND && [[ -z "${DRAGONX_MAC_ARCHS:-}" && -n "${lb_lib:-}" ]] && command -v lipo &>/dev/null; then
+            local _backend_archs; _backend_archs=$(lipo -archs "$lb_lib" 2>/dev/null | tr ' ' ';')
+            if [[ -n "$_backend_archs" && "$_backend_archs" != "$MAC_ARCHS" ]]; then
+                warn "Lite backend provides only [$_backend_archs] — building the app for that instead of universal."
+                MAC_ARCHS="$_backend_archs"
+            fi
+        fi
+        if [[ "$MAC_ARCHS" == *";"* || "$MAC_ARCHS" == *","* ]]; then
             MAC_ARCH="universal"
+        else
+            MAC_ARCH="$MAC_ARCHS"
+        fi
         export MACOSX_DEPLOYMENT_TARGET="11.0"
     fi
 
@@ -980,7 +1008,7 @@ TOOLCHAIN
             need_sodium=true
         elif [[ -f "$SCRIPT_DIR/libs/libsodium/lib/libsodium.a" ]]; then
             # Rebuild if existing lib is not universal (single-arch won't link)
-            if ! lipo -info "$SCRIPT_DIR/libs/libsodium/lib/libsodium.a" 2>/dev/null | grep -q "arm64.*x86_64\|x86_64.*arm64"; then
+            if ! lipo -info "$SCRIPT_DIR/libs/libsodium/lib/libsodium.a" 2>/dev/null | grep -Eq "arm64.*x86_64|x86_64.*arm64"; then
                 info "Existing libsodium is not universal — rebuilding ..."
                 rm -rf "$SCRIPT_DIR/libs/libsodium"
                 need_sodium=true
@@ -991,13 +1019,13 @@ TOOLCHAIN
             "$SCRIPT_DIR/scripts/fetch-libsodium.sh"
         fi
 
-        info "Configuring (native universal arm64+x86_64) ..."
+        info "Configuring (native macOS, arch: $MAC_ARCHS) ..."
         cmake "$SCRIPT_DIR" \
             -DCMAKE_BUILD_TYPE=Release \
             -DCMAKE_CXX_FLAGS_RELEASE="-O3 -DNDEBUG" \
             -DDRAGONX_USE_SYSTEM_SDL3=OFF \
             -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 \
-            -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64" \
+            -DCMAKE_OSX_ARCHITECTURES="$MAC_ARCHS" \
             "${CMAKE_LITE_ARGS[@]}"
     fi
 
@@ -1027,8 +1055,12 @@ TOOLCHAIN
     info "Binary: $(du -h "bin/${APP_BASENAME}" | cut -f1)"
 
     # ── Create .app bundle ───────────────────────────────────────────────────
-    rm -rf "$out"
     mkdir -p "$out"
+    # Clean only THIS variant's prior artifacts so full-node and lite releases can
+    # coexist in release/mac/ (Linux/Windows scope their cleanup the same way). The
+    # "ObsidianDragon-" glob never matches "ObsidianDragonLite-" (and vice versa),
+    # and the ".app" names are exact.
+    rm -rf "$out/${APP_BASENAME}.app" "$out/${APP_BASENAME}-"*.app.zip "$out/${APP_BASENAME}-"*.dmg
 
     local APP="$out/${APP_BASENAME}.app"
     local CONTENTS="$APP/Contents"
@@ -1078,8 +1110,8 @@ TOOLCHAIN
         info "Lite mode: skipping macOS daemon and Sapling/asmap bundling"
     fi
 
-    # xmrig binary (from prebuilt-binaries/xmrig-hac/)
-    local XMRIG_MAC="$SCRIPT_DIR/prebuilt-binaries/xmrig-hac/xmrig"
+    # xmrig binary (from prebuilt-binaries/drg-xmrig/)
+    local XMRIG_MAC="$SCRIPT_DIR/prebuilt-binaries/drg-xmrig/xmrig"
     if [[ -f "$XMRIG_MAC" ]]; then
         cp "$XMRIG_MAC" "$MACOS/xmrig"
         chmod +x "$MACOS/xmrig"
@@ -1228,8 +1260,10 @@ PLIST
     fi
 
     # ── Create DMG ───────────────────────────────────────────────────────────
-    local DMG_BASENAME="DragonX_Wallet"
-    $DO_LITE && DMG_BASENAME="DragonX_Wallet_Lite"
+    # DMG filename matches the app bundle name (ObsidianDragon / ObsidianDragonLite).
+    # The mounted volume + CFBundleName keep the "DragonX Wallet" display branding
+    # (APP_DISPLAY_NAME above).
+    local DMG_BASENAME="${APP_BASENAME}"
     local DMG_NAME="${DMG_BASENAME}-${VERSION}-macOS-${MAC_ARCH}.dmg"
 
     if command -v create-dmg &>/dev/null; then
@@ -1311,3 +1345,9 @@ if $DO_LINUX || $DO_WIN || $DO_MAC; then
     [[ -d "$SCRIPT_DIR/release/windows" ]] && echo -e "    ${CYAN}windows/${NC}   — .exe + .zip"
     [[ -d "$SCRIPT_DIR/release/mac" ]]     && echo -e "    ${CYAN}mac/${NC}       — .app + .dmg"
 fi
+
+# Reaching here means the build completed (real failures exit 1 at their point of failure).
+# Exit 0 explicitly: the final `[[ -d release/mac ]] && echo` above returns non-zero on a
+# non-mac build — and since set -e exempts the left side of an &&, that status would otherwise
+# become the script's exit code and make a successful build report failure (e.g. to CI).
+exit 0

cmake/patch-libwebp-simd.cmake

@@ -0,0 +1,31 @@
+# patch-libwebp-simd.cmake — portable, idempotent FetchContent patch for libwebp.
+#
+# libwebp's cmake/cpu.cmake compiles its scalar *reference* DSP files with the
+# SSE-disable flags "-mno-sse4.1;-mno-sse2" whenever it can't positively detect
+# SSE support. Under a macOS *universal* build (-arch arm64;x86_64) the per-arch
+# SSE flag probe fails (a flag valid for x86_64 is invalid for arm64), so those
+# disable flags get applied to the x86_64 slice. clang gates the _Float16 type on
+# SSE2 for x86_64, and the macOS 15+/26 SDK's <math.h> declares _Float16 math
+# functions unconditionally — so any TU including <math.h> fails to compile with
+# "_Float16 is not supported on this target".
+#
+# SSE2 is part of the x86_64 baseline ABI, so disabling it on the reference files
+# is unnecessary on every platform we target. Blanking the SSE entries (indices
+# must stay aligned with WEBP_SIMD_FLAGS) fixes the universal build and is a no-op
+# for single-arch Linux/Windows/x86_64 builds. Idempotent: re-running is a no-op.
+if(NOT DEFINED CPU_CMAKE OR NOT EXISTS "${CPU_CMAKE}")
+    message(FATAL_ERROR "patch-libwebp-simd: cpu.cmake not found at '${CPU_CMAKE}'")
+endif()
+
+file(READ "${CPU_CMAKE}" _contents)
+string(REPLACE
+    "set(SIMD_DISABLE_FLAGS \"-mno-sse4.1;-mno-sse2;;-mno-dspr2;;-mno-msa\")"
+    "set(SIMD_DISABLE_FLAGS \";;;-mno-dspr2;;-mno-msa\")"
+    _patched "${_contents}")
+
+if(_patched STREQUAL _contents)
+    message(STATUS "patch-libwebp-simd: no change (already patched or pattern absent)")
+else()
+    file(WRITE "${CPU_CMAKE}" "${_patched}")
+    message(STATUS "patch-libwebp-simd: neutralized x86 SSE-disable flags in cpu.cmake")
+endif()

scripts/build-lite-backend-artifact.sh

@@ -1,5 +1,17 @@
 #!/usr/bin/env bash
 
+# This script uses bash 4+ features (mapfile, safe empty-array expansion under
+# `set -u`). macOS ships bash 3.2, so re-exec under a newer bash when one is
+# present (Homebrew), and fail with a clear message otherwise.
+if [ "${BASH_VERSINFO:-0}" -lt 4 ]; then
+    for _newer_bash in /opt/homebrew/bin/bash /usr/local/bin/bash; do
+        [ -x "$_newer_bash" ] && exec "$_newer_bash" "$0" "$@"
+    done
+    echo "ERROR: build-lite-backend-artifact.sh requires bash 4+ (found ${BASH_VERSION:-unknown})." >&2
+    echo "       On macOS: brew install bash" >&2
+    exit 1
+fi
+
 set -euo pipefail
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
@@ -67,25 +79,9 @@ Options:
     --backend-dir PATH              SilentDragonXLite/lib source directory.
     --silentdragonxlitelib-dir PATH Override the wrapper's silentdragonxlitelib dependency path.
     --out-dir PATH                  Output directory for copied artifact and metadata.
-    --artifact PATH                 Inventory an existing artifact instead of building.
-    --no-build                      Do not run cargo; requires --artifact.
     --reproducible                  Add deterministic Rust path remaps for clean builds.
     --remap-path-prefix FROM=TO     Extra rustc path remap used with --reproducible.
     --builder NAME                  Redacted builder/provenance label. Default: local.
-    --signature-required            Fail if verified signature metadata is not supplied.
-    --signature-file PATH           Existing sidecar signature file to record.
-    --signature-format FORMAT       Signature format: minisign, gpg, sigstore, external, or other.
-    --signature-verification-tool T Verification tool and version used by the release builder.
-    --signature-verification-command C
-                                    Verification command already run by the release builder.
-    --signature-key-fingerprint F   Reviewed public-key fingerprint, when applicable.
-    --signature-certificate-identity ID
-                                    Reviewed certificate identity, when applicable.
-    --signature-certificate-issuer I
-                                    Reviewed certificate issuer, when applicable.
-    --signature-transparency-log-url URL
-                                    Transparency log entry, when applicable.
-    --signature-verified-sha256 SHA Artifact SHA-256 verified by the signature check.
     -j, --jobs N                    Cargo parallel jobs.
     --cargo-arg ARG                 Extra argument forwarded to cargo build.
     -h, --help                      Show this help.
@@ -95,9 +91,13 @@ Outputs:
   <out>/<platform>/lite-backend-symbols.txt
   <out>/<platform>/lite-backend-artifact-manifest.json
 
-The script captures symbols, checksums, and optional read-only signature
-verification metadata only. It does not load the library, resolve function
-pointers, call SDXL, sign, upload, or publish artifacts.
+The lite backend is always built from the vendored in-tree source
+(third_party/silentdragonxlite), which is the trust root. Prebuilt artifacts
+and self-attested signature metadata are NOT accepted (F15-1) — the previous
+scheme only recorded an unverified "verified" claim. The script captures the
+freshly-built artifact's symbols and checksum, and records build provenance.
+It does not load the library, resolve function pointers, call SDXL, sign,
+upload, or publish artifacts.
 EOF
 }
 
@@ -166,15 +166,8 @@ while [[ $# -gt 0 ]]; do
             OUT_DIR="$(absolute_path "$2")"
             shift 2
             ;;
-        --artifact)
-            [[ $# -ge 2 ]] || die "--artifact requires a value"
-            ARTIFACT_PATH="$(absolute_path "$2")"
-            BUILD_ARTIFACT=false
-            shift 2
-            ;;
-        --no-build)
-            BUILD_ARTIFACT=false
-            shift
+        --artifact|--no-build)
+            die "$1 was removed (F15-1): the lite backend must be built from the vendored in-tree source (third_party/silentdragonxlite); prebuilt artifacts are no longer accepted."
             ;;
         --reproducible)
             REPRODUCIBLE=true
@@ -191,54 +184,11 @@ while [[ $# -gt 0 ]]; do
             BUILDER="$2"
             shift 2
             ;;
-        --signature-required)
-            SIGNATURE_REQUIRED=true
-            shift
-            ;;
-        --signature-file|--signature-path)
-            [[ $# -ge 2 ]] || die "$1 requires a value"
-            SIGNATURE_FILE="$(absolute_path "$2")"
-            shift 2
-            ;;
-        --signature-format)
-            [[ $# -ge 2 ]] || die "--signature-format requires a value"
-            SIGNATURE_FORMAT="$2"
-            shift 2
-            ;;
-        --signature-verification-tool|--signature-tool)
-            [[ $# -ge 2 ]] || die "$1 requires a value"
-            SIGNATURE_VERIFICATION_TOOL="$2"
-            shift 2
-            ;;
-        --signature-verification-command)
-            [[ $# -ge 2 ]] || die "--signature-verification-command requires a value"
-            SIGNATURE_VERIFICATION_COMMAND="$2"
-            shift 2
-            ;;
-        --signature-key-fingerprint)
-            [[ $# -ge 2 ]] || die "--signature-key-fingerprint requires a value"
-            SIGNATURE_KEY_FINGERPRINT="$2"
-            shift 2
-            ;;
-        --signature-certificate-identity)
-            [[ $# -ge 2 ]] || die "--signature-certificate-identity requires a value"
-            SIGNATURE_CERTIFICATE_IDENTITY="$2"
-            shift 2
-            ;;
-        --signature-certificate-issuer)
-            [[ $# -ge 2 ]] || die "--signature-certificate-issuer requires a value"
-            SIGNATURE_CERTIFICATE_ISSUER="$2"
-            shift 2
-            ;;
-        --signature-transparency-log-url)
-            [[ $# -ge 2 ]] || die "--signature-transparency-log-url requires a value"
-            SIGNATURE_TRANSPARENCY_LOG_URL="$2"
-            shift 2
-            ;;
-        --signature-verified-sha256)
-            [[ $# -ge 2 ]] || die "--signature-verified-sha256 requires a value"
-            SIGNATURE_VERIFIED_SHA256="$2"
-            shift 2
+        --signature-required|--signature-file|--signature-path|--signature-format|\
+--signature-verification-tool|--signature-tool|--signature-verification-command|\
+--signature-key-fingerprint|--signature-certificate-identity|--signature-certificate-issuer|\
+--signature-transparency-log-url|--signature-verified-sha256)
+            die "signature-attestation flags were removed (F15-1): they recorded a self-attested \"verified\" claim without running any cryptographic verifier. The lite backend is built from the vendored in-tree source, which is the trust root."
             ;;
         -j|--jobs)
             [[ $# -ge 2 ]] || die "--jobs requires a value"
@@ -374,6 +324,9 @@ prepare_backend_source() {
     ln -s "$BACKEND_SOURCE_DIR/src" "$prepared_root/src"
     [[ -f "$BACKEND_SOURCE_DIR/Cargo.lock" ]] && ln -s "$BACKEND_SOURCE_DIR/Cargo.lock" "$prepared_root/Cargo.lock"
     [[ -d "$BACKEND_SOURCE_DIR/.cargo" ]] && ln -s "$BACKEND_SOURCE_DIR/.cargo" "$prepared_root/.cargo"
+    # Honor the pinned Rust toolchain (rust-toolchain.toml) inside the prepared root too,
+    # so builds using --silentdragonxlitelib-dir still select rustc 1.63.
+    [[ -f "$BACKEND_SOURCE_DIR/rust-toolchain.toml" ]] && ln -s "$BACKEND_SOURCE_DIR/rust-toolchain.toml" "$prepared_root/rust-toolchain.toml"
     [[ -d "$BACKEND_SOURCE_DIR/libsodium-mingw" ]] && ln -s "$BACKEND_SOURCE_DIR/libsodium-mingw" "$prepared_root/libsodium-mingw"
     # Vendored crate deps (offline builds): the .cargo/config.toml's vendored-sources directory is
     # "vendor" relative to the build root, so expose it inside the prepared root too.
@@ -766,6 +719,7 @@ MANIFEST_FILE="$PLATFORM_OUT_DIR/lite-backend-artifact-manifest.json"
     printf '  },\n'
     printf '  "provenance": {\n'
     printf '    "owner_ready": true,\n'
+    printf '    "built_from_source": true,\n'
     printf '    "metadata_provided": true,\n'
     printf '    "source": '; json_escape "$BACKEND_SOURCE_DIR"; printf ',\n'
     printf '    "cargo_build_source": '; json_escape "$BUILD_BACKEND_DIR"; printf ',\n'

scripts/create-appimage.sh

@@ -24,18 +24,27 @@ if [ ! -f "${BUILD_DIR}/bin/ObsidianDragon" ]; then
     exit 1
 fi
 
-# Check for appimagetool
+# Check for appimagetool — pinned to a tagged release and SHA-256 verified before we exec it.
+# The old "continuous" tag is a moving, unverified network download that runs on the release
+# builder; verify it or refuse to package.
+APPIMAGETOOL_URL="https://github.com/AppImage/appimagetool/releases/download/1.9.0/appimagetool-x86_64.AppImage"
+APPIMAGETOOL_SHA256="46fdd785094c7f6e545b61afcfb0f3d98d8eab243f644b4b17698c01d06083d1"
 APPIMAGETOOL=""
 if command -v appimagetool &> /dev/null; then
-    APPIMAGETOOL="appimagetool"
-elif [ -f "${BUILD_DIR}/appimagetool-x86_64.AppImage" ]; then
-    APPIMAGETOOL="${BUILD_DIR}/appimagetool-x86_64.AppImage"
+    APPIMAGETOOL="appimagetool"   # maintainer's own trusted system install
 else
-    print_status "Downloading appimagetool..."
-    wget -q -O "${BUILD_DIR}/appimagetool-x86_64.AppImage" \
-        "https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage"
-    chmod +x "${BUILD_DIR}/appimagetool-x86_64.AppImage"
-    APPIMAGETOOL="${BUILD_DIR}/appimagetool-x86_64.AppImage"
+    AT="${BUILD_DIR}/appimagetool-x86_64.AppImage"
+    if [ ! -f "$AT" ] || ! echo "${APPIMAGETOOL_SHA256}  ${AT}" | sha256sum -c --status; then
+        print_status "Downloading appimagetool 1.9.0 (pinned)..."
+        wget -q -O "$AT" "$APPIMAGETOOL_URL"
+        if ! echo "${APPIMAGETOOL_SHA256}  ${AT}" | sha256sum -c --status; then
+            print_error "appimagetool SHA-256 verification failed — refusing to use it"
+            rm -f "$AT"
+            exit 1
+        fi
+        chmod +x "$AT"
+    fi
+    APPIMAGETOOL="$AT"
 fi
 
 print_status "Creating AppDir structure..."

scripts/legacy/build-windows.sh

@@ -256,8 +256,8 @@ HEADER_START
         echo -e "${YELLOW}Note: Daemon binaries not found in prebuilt-binaries/dragonxd-win/ — wallet only${NC}"
     fi
 
-    # ── xmrig binary (from prebuilt-binaries/xmrig-hac/) ────────────────
-    XMRIG_DIR="$SCRIPT_DIR/prebuilt-binaries/xmrig-hac"
+    # ── xmrig binary (from prebuilt-binaries/drg-xmrig/) ────────────────
+    XMRIG_DIR="$SCRIPT_DIR/prebuilt-binaries/drg-xmrig"
     if [ -f "$XMRIG_DIR/xmrig.exe" ]; then
         cp -f "$XMRIG_DIR/xmrig.exe" "$EMBED_RES_DIR/xmrig.exe"
         echo "  Staged xmrig.exe ($(du -h "$XMRIG_DIR/xmrig.exe" | cut -f1))"

scripts/sign-daemon-release.sh

@@ -1,25 +1,31 @@
 #!/usr/bin/env bash
-# Sign dragonx full-node release archives for the wallet's in-app daemon updater (ed25519).
+# Package the prebuilt dragonx full-node binaries into per-platform release archives and sign them
+# for the wallet's in-app daemon updater (ed25519 over the EXACT archive bytes).
 #
-# The wallet verifies a detached ed25519 signature over the EXACT archive bytes against a public
-# key pinned in src/util/daemon_updater.h (kDaemonSignaturePublicKeyBase64). Verification is
-# MANDATORY (kDaemonRequireSignature = true): an in-app update is refused unless a valid signature
-# is published. For each archive <name>.zip this produces <name>.zip.sig holding the base64 of the
-# raw 64-byte ed25519 signature — upload that .sig next to the .zip as a release asset.
+# The wallet verifies a detached ed25519 signature over the archive bytes against a public key
+# pinned in src/util/daemon_updater.h (kDaemonSignaturePublicKeyBase64). Verification is MANDATORY
+# (kDaemonRequireSignature = true): an in-app update is refused unless a valid "<archive>.sig" is
+# published next to the archive. The wallet also checks each archive's SHA-256 against a markdown
+# checksum table in the release body, so `release` prints that table for you to paste in.
 #
-# Uses OpenSSL (>= 1.1.1) only — no Python/PyNaCl needed. OpenSSL's ed25519 is PureEdDSA (RFC 8032),
-# the same primitive libsodium's crypto_sign_verify_detached checks, so signatures are compatible
-# (the same flow the wallet's unit tests verify for the miner updater).
+# Uses OpenSSL (>= 1.1.1) only — no Python/PyNaCl. OpenSSL's ed25519 is PureEdDSA (RFC 8032), the
+# same primitive libsodium's crypto_sign_verify_detached checks, so the signatures are compatible.
 #
 # Usage:
 #   scripts/sign-daemon-release.sh keygen [out-prefix]         # -> <prefix>.ed25519.{key,pub.b64}
 #   scripts/sign-daemon-release.sh pubkey <secret.key>         # print the base64 public key to pin
-#   scripts/sign-daemon-release.sh sign <secret.key> <file>...# -> <file>.sig per file
+#   scripts/sign-daemon-release.sh sign   <secret.key> <file>...  # sign existing files -> <file>.sig
+#   scripts/sign-daemon-release.sh release <secret.key> <version> [--src DIR] [--out DIR]
+#       # zip prebuilt-binaries/dragonxd-{linux,mac,win}/ into dragonx-<version>-{linux-amd64,macos,
+#       # win64}.zip, sign each, and print the SHA-256 checksum table. Platforms with no dragonxd
+#       # binary staged are skipped.
 #
-# Keep the secret key (.ed25519.key) OFFLINE. Paste the base64 public key into
+# Keep the secret key (.ed25519.key) OFFLINE (mode 600). Paste the base64 public key into
 # kDaemonSignaturePublicKeyBase64 in src/util/daemon_updater.h.
 
 set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
 die() { echo "error: $*" >&2; exit 1; }
 command -v openssl >/dev/null || die "openssl not found (need >= 1.1.1 with ed25519)"
 
@@ -27,6 +33,26 @@ command -v openssl >/dev/null || die "openssl not found (need >= 1.1.1 with ed25
 # ed25519 is a fixed 12-byte prefix + the 32-byte key, so the trailing 32 bytes are the raw key.
 pubkey_b64() { openssl pkey -in "$1" -pubout -outform DER | tail -c 32 | openssl base64 -A; }
 
+sha256_of() {
+  if command -v sha256sum >/dev/null 2>&1; then sha256sum "$1" | awk '{print $1}';
+  else shasum -a 256 "$1" | awk '{print $1}'; fi
+}
+
+# Detached ed25519 signature over the raw file bytes -> <file>.sig (base64 of the 64-byte sig).
+sign_file() {
+  local key="$1" f="$2" raw
+  raw="$(mktemp)"
+  openssl pkeyutl -sign -inkey "$key" -rawin -in "$f" -out "$raw"
+  openssl base64 -A -in "$raw" > "$f.sig"
+  printf '\n' >> "$f.sig"
+  rm -f "$raw"
+}
+
+# platform -> (staging dir under prebuilt-binaries, release token, expected daemon binary name)
+plat_dir()    { case "$1" in linux) echo dragonxd-linux;; mac) echo dragonxd-mac;; win) echo dragonxd-win;; esac; }
+plat_token()  { case "$1" in linux) echo linux-amd64;;   mac) echo macos;;        win) echo win64;; esac; }
+plat_daemon() { case "$1" in win) echo dragonxd.exe;;    *)   echo dragonxd;; esac; }
+
 cmd="${1:-}"; shift || true
 case "$cmd" in
   keygen)
@@ -42,26 +68,90 @@ case "$cmd" in
     echo "Pin this in src/util/daemon_updater.h (kDaemonSignaturePublicKeyBase64):"
     echo "  $pub"
     ;;
+
   pubkey)
     [ $# -ge 1 ] || die "usage: pubkey <secret.key>"
     pubkey_b64 "$1"
     ;;
+
   sign)
     [ $# -ge 2 ] || die "usage: sign <secret.key> <file>..."
     key="$1"; shift
     [ -f "$key" ] || die "no such key: $key"
     for f in "$@"; do
       [ -f "$f" ] || die "no such file: $f"
-      raw="$(mktemp)"
-      openssl pkeyutl -sign -inkey "$key" -rawin -in "$f" -out "$raw"
-      openssl base64 -A -in "$raw" > "$f.sig"
-      printf '\n' >> "$f.sig"
-      rm -f "$raw"
+      sign_file "$key" "$f"
       echo "signed: $f -> $f.sig"
     done
     echo "Upload each .sig as a release asset next to its archive."
     ;;
+
+  release)
+    [ $# -ge 2 ] || die "usage: release <secret.key> <version> [--src DIR] [--out DIR]"
+    key="$1"; version="$2"; shift 2
+    src="$PROJECT_ROOT/prebuilt-binaries"
+    out="$PROJECT_ROOT/release/daemon"
+    while [ $# -gt 0 ]; do
+      case "$1" in
+        --src) [ $# -ge 2 ] || die "--src needs a value"; src="$2"; shift 2 ;;
+        --out) [ $# -ge 2 ] || die "--out needs a value"; out="$2"; shift 2 ;;
+        *) die "unknown option: $1" ;;
+      esac
+    done
+    [ -f "$key" ] || die "no such key: $key"
+    [ -d "$src" ] || die "no such source dir: $src"
+    command -v zip >/dev/null 2>&1 || die "zip not found (install 'zip')"
+    mkdir -p "$out"
+
+    # Sanity: warn if this key does not match the public key pinned in the wallet (the wallet would
+    # then reject every signature made with it — only expected when deliberately rotating the key).
+    pinned="$(grep -oE '"[A-Za-z0-9+/]{43}="' "$PROJECT_ROOT/src/util/daemon_updater.h" 2>/dev/null | head -1 | tr -d '"')"
+    mine="$(pubkey_b64 "$key")"
+    if [ -n "$pinned" ] && [ "$pinned" != "$mine" ]; then
+      echo "WARNING: this key's public key does not match the one pinned in daemon_updater.h:" >&2
+      echo "         signing key -> $mine" >&2
+      echo "         pinned key  -> $pinned" >&2
+      echo "         The wallet will REJECT these signatures unless you are rotating the pinned key." >&2
+      echo >&2
+    fi
+
+    made=0
+    table=""
+    for plat in linux mac win; do
+      d="$src/$(plat_dir "$plat")"
+      daemon="$d/$(plat_daemon "$plat")"
+      if [ ! -f "$daemon" ]; then
+        echo "skip $plat: no $(plat_daemon "$plat") staged in $d" >&2
+        continue
+      fi
+      archive="dragonx-$version-$(plat_token "$plat").zip"
+      apath="$out/$archive"
+      rm -f "$apath"
+      # Zip the staged files at the archive root (binaries + sapling params + asmap), excluding
+      # the .gitkeep placeholder. The updater flattens paths via baseName(), so a flat zip is fine.
+      files=()
+      while IFS= read -r fn; do files+=("$fn"); done < <(cd "$d" && ls -A | grep -vx '.gitkeep')
+      [ "${#files[@]}" -gt 0 ] || { echo "skip $plat: nothing to package in $d" >&2; continue; }
+      ( cd "$d" && zip -q -X "$apath" "${files[@]}" )
+      sign_file "$key" "$apath"
+      sum="$(sha256_of "$apath")"
+      table+="| $archive | \`$sum\` |"$'\n'
+      echo "packaged + signed: $apath (+ .sig)  sha256=$sum"
+      made=$((made + 1))
+    done
+    [ "$made" -gt 0 ] || die "no platform had a staged daemon binary under $src/dragonxd-{linux,mac,win}/"
+
+    echo
+    echo "Checksum table (paste into the release body so the wallet can verify SHA-256):"
+    echo "| Archive | SHA-256 |"
+    echo "|---|---|"
+    printf '%s' "$table"
+    echo
+    echo "Upload each .zip AND its .zip.sig as release assets. Wallet enforces the ed25519 signature"
+    echo "(kDaemonRequireSignature=true) and the SHA-256 from the table above."
+    ;;
+
   *)
-    die "usage: $0 {keygen [prefix] | pubkey <secret.key> | sign <secret.key> <file>...}"
+    die "usage: $0 {keygen [prefix] | pubkey <secret.key> | sign <secret.key> <file>... | release <secret.key> <version> [--src DIR] [--out DIR]}"
     ;;
 esac

setup.sh

@@ -133,7 +133,7 @@ pkgs_core_arch="base-devel cmake git pkg-config
     libxkbcommon wayland libsodium curl
     autoconf automake libtool wget python xxd"
 
-pkgs_core_macos="cmake python xxd"
+pkgs_core_macos="bash cmake python xxd"
 
 # Windows cross-compile (from Linux)
 pkgs_win_debian="mingw-w64 zip"
@@ -284,6 +284,14 @@ fi
 header "Windows Cross-Compile"
 
 if $SETUP_WIN; then
+    # Only touch apt / update-alternatives (which need sudo) when the toolchain is missing. If it is
+    # already installed, skip them so `./setup.sh --win` can run WITHOUT sudo — important because the
+    # daemon cross-compile that follows should run as the invoking user. Running the whole setup under
+    # sudo leaves root-owned build artifacts under external/dragonx, which then break `make clean` on
+    # a later non-sudo build (stale objects get relinked -> the mingw link failure recurs).
+    if has_cmd x86_64-w64-mingw32-g++-posix || has_cmd x86_64-w64-mingw32-g++; then
+        ok "Windows cross-compile toolchain already present — skipping apt install"
+    else
         win_pkgs="$(get_pkgs win)"
         if [[ -n "$win_pkgs" ]]; then
             install_pkgs "$win_pkgs" "Windows cross-compile"
@@ -298,6 +306,7 @@ if $SETUP_WIN; then
                     /usr/bin/x86_64-w64-mingw32-g++-posix 2>/dev/null || true
             fi
         fi
+    fi
 
     # Fetch libsodium for Windows
     if [[ ! -f "$PROJECT_DIR/libs/libsodium-win/lib/libsodium.a" ]]; then
@@ -391,11 +400,26 @@ elif $SETUP_SAPLING; then
 
         SPEND_URL="https://z.cash/downloads/sapling-spend.params"
         OUTPUT_URL="https://z.cash/downloads/sapling-output.params"
+        # Consensus-critical MPC parameters with fixed, well-known SHA-256 (identical across every
+        # Zcash-family node; also pinned in scripts/build-lite-backend-artifact.sh). z.cash is
+        # plain HTTPS with no signature, so verify the digest and refuse a tampered/corrupt file.
+        SPEND_SHA256="8e48ffd23abb3a5fd9c5589204f32d9c31285a04b78096ba40a79b75677efc13"
+        OUTPUT_SHA256="2f0ebbcbb9bb0bcffe95a397e7eba89c29eb4dde6191c339db88570e3f3fb0e4"
 
-        curl -fSL -o "$PARAMS_DIR/sapling-spend.params"  "$SPEND_URL"  && \
-            ok "Downloaded sapling-spend.params"
-        curl -fSL -o "$PARAMS_DIR/sapling-output.params" "$OUTPUT_URL" && \
-            ok "Downloaded sapling-output.params"
+        if curl -fSL -o "$PARAMS_DIR/sapling-spend.params" "$SPEND_URL" \
+           && echo "${SPEND_SHA256}  $PARAMS_DIR/sapling-spend.params" | sha256sum -c --status; then
+            ok "Downloaded + verified sapling-spend.params"
+        else
+            rm -f "$PARAMS_DIR/sapling-spend.params"
+            err "sapling-spend.params download or SHA-256 verification failed — not installed"
+        fi
+        if curl -fSL -o "$PARAMS_DIR/sapling-output.params" "$OUTPUT_URL" \
+           && echo "${OUTPUT_SHA256}  $PARAMS_DIR/sapling-output.params" | sha256sum -c --status; then
+            ok "Downloaded + verified sapling-output.params"
+        else
+            rm -f "$PARAMS_DIR/sapling-output.params"
+            err "sapling-output.params download or SHA-256 verification failed — not installed"
+        fi
     fi
 else
     skip "Sapling params not found (use --sapling to download, or they'll be extracted at runtime from embedded builds)"
@@ -684,11 +708,13 @@ if [[ "$STALE_DAEMON" -eq 1 ]]; then
     warn "  Linux: ./setup.sh   ·   Windows: ./setup.sh --win   ·   macOS: ./setup.sh --mac"
 fi
 
-# ── 7. xmrig-hac (mining binary) ────────────────────────────────────────────
-header "xmrig-hac Mining Binary"
+# ── 7. drg-xmrig (mining binary) ────────────────────────────────────────────
+header "drg-xmrig Mining Binary"
 
-XMRIG_SRC="$PROJECT_DIR/external/xmrig-hac"
-XMRIG_PREBUILT="$PROJECT_DIR/prebuilt-binaries/xmrig-hac"
+XMRIG_SRC="$PROJECT_DIR/external/drg-xmrig"
+# Output dir bundled by build.sh (Linux zip, AppImage, Windows embed, mac .app)
+# and scripts/legacy/build-windows.sh — keep this path in sync with those.
+XMRIG_PREBUILT="$PROJECT_DIR/prebuilt-binaries/drg-xmrig"
 
 # Clean previous prebuilt xmrig binaries so we always rebuild
 # Only clean the binary for the platform(s) we are actually building,
@@ -700,14 +726,14 @@ if ! $CHECK_ONLY; then
     fi
 fi
 
-# Helper: clone xmrig-hac if not present
+# Helper: clone drg-xmrig if not present
 clone_xmrig_if_needed() {
     if [[ ! -d "$XMRIG_SRC" ]]; then
-        info "Cloning xmrig-hac..."
-        git clone https://git.dragonx.is/dragonx/xmrig-hac.git "$XMRIG_SRC"
+        info "Cloning drg-xmrig..."
+        git clone https://git.dragonx.is/DragonX/drg-xmrig.git "$XMRIG_SRC"
     else
-        ok "xmrig-hac source already present"
-        info "Pulling latest xmrig-hac..."
+        ok "drg-xmrig source already present"
+        info "Pulling latest drg-xmrig..."
         (cd "$XMRIG_SRC" && git pull --ff-only 2>/dev/null || true)
     fi
 }
@@ -728,15 +754,15 @@ else
     rm -rf "$XMRIG_SRC/build"
 
     # Build dependencies (libuv, hwloc, openssl)
-    info "Building xmrig-hac dependencies (libuv, hwloc, openssl)..."
+    info "Building drg-xmrig dependencies (libuv, hwloc, openssl)..."
     (
         cd "$XMRIG_SRC/scripts"
         sh build_deps.sh
     )
-    ok "xmrig-hac dependencies built"
+    ok "drg-xmrig dependencies built"
 
     # Build xmrig
-    info "Building xmrig-hac (Linux)..."
+    info "Building drg-xmrig (Linux)..."
     mkdir -p "$XMRIG_SRC/build"
     (
         cd "$XMRIG_SRC/build"
@@ -753,7 +779,7 @@ else
     mkdir -p "$XMRIG_PREBUILT"
     if [[ -f "$XMRIG_SRC/build/xmrig" ]]; then
         cp "$XMRIG_SRC/build/xmrig" "$XMRIG_LINUX"
-        ok "xmrig (Linux) built and installed to prebuilt-binaries/xmrig-hac/"
+        ok "xmrig (Linux) built and installed to prebuilt-binaries/drg-xmrig/"
     else
         err "xmrig (Linux) build failed — binary not found"
         MISSING=$((MISSING + 1))
@@ -777,7 +803,7 @@ else
     # Clean previous Windows build
     rm -rf "$XMRIG_SRC/build-windows"
 
-    info "Building xmrig-hac (Windows cross-compile)..."
+    info "Building drg-xmrig (Windows cross-compile)..."
     (
         cd "$XMRIG_SRC/scripts"
         bash build_windows.sh
@@ -787,7 +813,7 @@ else
     mkdir -p "$XMRIG_PREBUILT"
     if [[ -f "$XMRIG_SRC/build-windows/xmrig.exe" ]]; then
         cp "$XMRIG_SRC/build-windows/xmrig.exe" "$XMRIG_WIN"
-        ok "xmrig.exe (Windows) built and installed to prebuilt-binaries/xmrig-hac/"
+        ok "xmrig.exe (Windows) built and installed to prebuilt-binaries/drg-xmrig/"
     else
         err "xmrig.exe (Windows) build failed — binary not found"
         MISSING=$((MISSING + 1))
@@ -797,7 +823,7 @@ fi
 # ── 8. Binary directories ───────────────────────────────────────────────────
 header "Binary Directories"
 
-for platform in dragonxd-linux dragonxd-win dragonxd-mac xmrig; do
+for platform in dragonxd-linux dragonxd-win dragonxd-mac drg-xmrig; do
     dir="$PROJECT_DIR/prebuilt-binaries/$platform"
     if [[ -d "$dir" ]]; then
         # Count actual files (not .gitkeep)

src/app.cpp

@@ -5320,6 +5320,11 @@ void App::renderLoadingOverlay(float contentH)
 
 void App::shutdown()
 {
+    // Wipe any copied secret from the OS clipboard before we exit — the 45s auto-clear timer
+    // never fires if the user quits sooner, which would otherwise leave a key/seed resident.
+    // (ImGui context is still alive here; App::shutdown() runs before ImGui::DestroyContext().)
+    clearSecretClipboardIfArmed();
+
     // Clean up bootstrap if running
     if (bootstrap_) {
         bootstrap_->cancel();
@@ -5522,10 +5527,9 @@ void App::copySecretToClipboard(const std::string& secret)
         ui::Notifications::instance().info("Copied — clipboard auto-clears in 45s", 4.0f);
 }
 
-void App::pumpSecretClipboardClear()
+void App::clearSecretClipboardIfArmed()
 {
-    if (clipboard_clear_deadline_ <= 0.0) return;
-    if (ImGui::GetTime() < clipboard_clear_deadline_) return;
+    if (clipboard_secret_hash_ == 0) return;
     // Only clear if the clipboard STILL holds our secret (the user may have copied something else).
     if (const char* cb = ImGui::GetClipboardText()) {
         std::uint64_t h = 1469598103934665603ULL;
@@ -5536,6 +5540,13 @@ void App::pumpSecretClipboardClear()
     clipboard_secret_hash_ = 0;
 }
 
+void App::pumpSecretClipboardClear()
+{
+    if (clipboard_clear_deadline_ <= 0.0) return;
+    if (ImGui::GetTime() < clipboard_clear_deadline_) return;
+    clearSecretClipboardIfArmed();
+}
+
 void App::maybeFinishTransactionSendProgress()
 {
     using Job = services::NetworkRefreshService::Job;

src/app.h

@@ -573,6 +573,9 @@ public:
     // plaintext. Call pumpSecretClipboardClear() each frame to action the clear.
     void copySecretToClipboard(const std::string& secret);
     void pumpSecretClipboardClear();
+    // Immediately clear the clipboard if it still holds the armed secret (ignores the 45s timer).
+    // Called on app shutdown so a copied key/seed does not outlive the process in the OS clipboard.
+    void clearSecretClipboardIfArmed();
     bool isTransactionRefreshInProgress() const {
         return network_refresh_.jobInProgress(services::NetworkRefreshService::Job::Transactions);
     }

src/chat/chat_database.cpp

@@ -228,6 +228,17 @@ bool ChatDatabase::ensureOpen()
     exec("PRAGMA journal_mode=WAL");
     exec("PRAGMA synchronous=NORMAL");
 
+    // C3-1: restrict the chat DB and its WAL/SHM sidecars to owner-only. sqlite creates them with
+    // umask-derived permissions (often world/group-readable); they hold per-row nonces + AEAD
+    // ciphertext of the user's messages. Best-effort (errors swallowed; a no-op-ish on Windows).
+    {
+        std::error_code perr;
+        const auto ownerOnly = std::filesystem::perms::owner_read | std::filesystem::perms::owner_write;
+        std::filesystem::permissions(database_path_, ownerOnly, std::filesystem::perm_options::replace, perr);
+        std::filesystem::permissions(database_path_ + "-wal", ownerOnly, std::filesystem::perm_options::replace, perr);
+        std::filesystem::permissions(database_path_ + "-shm", ownerOnly, std::filesystem::perm_options::replace, perr);
+    }
+
     if (!createSchema()) {
         close();
         return false;

src/daemon/seed_wallet_creator.cpp

@@ -136,6 +136,14 @@ SeedWalletResult SeedWalletCreator::create(bool keepDatadir,
         }
     }
 
+    // W1-2: never hand back a live seed on a failure path. If the mnemonic was exported but a
+    // later step failed (empty address, or z_getnewaddress threw), the caller discards this
+    // result without wiping it, which would leave the seed resident. Success keeps it deliberately.
+    if (!r.ok && !r.seedPhrase.empty()) {
+        sodium_memzero(&r.seedPhrase[0], r.seedPhrase.size());
+        r.seedPhrase.clear();
+    }
+
     // 7. Stop the isolated node (graceful; it flushes its tiny empty chain quickly).
     cli.disconnect();
     temp.stop(20000);

src/daemon/xmrig_manager.cpp

@@ -2,7 +2,7 @@
 // Copyright 2024-2026 The Hush Developers
 // Released under the GPLv3
 //
-// xmrig_manager.cpp — Pool mining process management via xmrig-hac.
+// xmrig_manager.cpp — Pool mining process management via drg-xmrig.
 // Spawns xmrig, monitors via HTTP API, tracks hashrate and shares.
 
 #include "xmrig_manager.h"
@@ -208,19 +208,20 @@ bool XmrigManager::generateConfig(const Config& cfg, const std::string& outPath)
 
     try {
         fs::create_directories(fs::path(outPath).parent_path());
-        std::ofstream ofs(outPath);
+        std::ofstream ofs(outPath, std::ios::trunc);
         if (!ofs.is_open()) {
             last_error_ = "Cannot write xmrig config: " + outPath;
             DEBUG_LOGF("[ERROR] XmrigManager: %s\n", last_error_.c_str());
             return false;
         }
-        ofs << j.dump(4);
-        ofs.close();
-
 #ifndef _WIN32
-        // 0600 permissions — only owner can read/write
+        // Restrict to owner (0600) BEFORE writing any secret material (API token, wallet
+        // address, worker name). The file is still empty here, so the config is never
+        // world-readable — closing the window between creation and the previous post-write chmod.
         chmod(outPath.c_str(), 0600);
 #endif
+        ofs << j.dump(4);
+        ofs.close();
         return true;
     } catch (const std::exception& e) {
         last_error_ = std::string("Config write error: ") + e.what();

src/rpc/rpc_client.cpp

@@ -25,9 +25,11 @@ namespace {
 
 // Recursively zero every string value in a JSON tree in place — used to wipe a discarded parse tree
 // that held a secret (B7). Operates on the underlying std::string buffers via get_ref.
-void scrubJsonSecrets(nlohmann::json& j) {
+// Templated so it works on both nlohmann::json and nlohmann::ordered_json (callRaw uses the latter).
+template <typename J>
+void scrubJsonSecrets(J& j) {
     if (j.is_string()) {
-        auto& s = j.get_ref<std::string&>();
+        auto& s = j.template get_ref<std::string&>();
         if (!s.empty()) sodium_memzero(&s[0], s.size());
     } else if (j.is_object() || j.is_array()) {
         for (auto& el : j) scrubJsonSecrets(el);
@@ -96,6 +98,10 @@ void RPCClient::setTraceSource(std::string source)
 // Callback for libcurl to write response data
 static size_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* userp) {
     size_t totalSize = size * nmemb;
+    // Bound accumulation so a hostile/compromised daemon cannot OOM the client with an unbounded
+    // response body. 256 MiB is far above any legitimate JSON-RPC response yet prevents exhaustion.
+    static constexpr size_t kMaxRpcResponseBytes = 256u * 1024 * 1024;
+    if (userp->size() + totalSize > kMaxRpcResponseBytes) return 0;  // short count aborts the transfer
     userp->append((char*)contents, totalSize);
     return totalSize;
 }
@@ -202,6 +208,10 @@ bool RPCClient::connect(const std::string& host, const std::string& port,
     // budget for the TCP + TLS handshake over real network latency (1s would spuriously fail).
     const long connectTimeout = Connection::isLocalHost(host) ? 2L : 10L;
     curl_easy_setopt(impl_->curl, CURLOPT_CONNECTTIMEOUT, connectTimeout);
+    // Enforce TLS certificate + hostname verification explicitly rather than relying on libcurl's
+    // build defaults. Harmless on the localhost http:// case; essential for a remote https daemon.
+    curl_easy_setopt(impl_->curl, CURLOPT_SSL_VERIFYPEER, 1L);
+    curl_easy_setopt(impl_->curl, CURLOPT_SSL_VERIFYHOST, 2L);
 
     // Test connection with getinfo. Use a SHORT timeout for the probe on localhost: a healthy
     // local daemon answers in milliseconds and a warming one returns -28 just as fast, so a long
@@ -508,14 +518,22 @@ std::string RPCClient::callRaw(const std::string& method, const json& params)
     }
 
     auto& result = oj["result"];
+    std::string out;
     if (result.is_null()) {
-        return "null";
+        out = "null";
     } else if (result.is_string()) {
         // Return the raw string (not JSON-encoded) — caller wraps as needed
-        return result.get<std::string>();
+        out = result.get<std::string>();
     } else {
-        return result.dump(4);
+        out = result.dump(4);
     }
+    // B7: this raw path serves arbitrary console commands including dumpprivkey / z_exportkey,
+    // whose response carries plaintext key material. Zero the raw buffer and the parsed tree so
+    // the secret does not linger in freed heap (matching callSecret). The single returned copy is
+    // the caller's to manage.
+    scrubJsonSecrets(oj);
+    if (!response_data.empty()) sodium_memzero(&response_data[0], response_data.size());
+    return out;
 }
 
 void RPCClient::doRPC(const std::string& method, const json& params, Callback cb, ErrorCallback err)

src/ui/material/draw_helpers.h

@@ -57,6 +57,21 @@ inline ImU32 ReadableError() {
     return IM_COL32(r, g, b, (e >> IM_COL32_A_SHIFT) & 0xFF);
 }
 
+// Middle-ellipsis truncation ("front...back", roughly equal halves) so `text` fits within
+// maxWidth pixels when drawn with `font` at `fontSize`. Returns `text` unchanged if it already
+// fits (or maxWidth is non-positive). Display-only — never mutate the underlying value with this.
+inline std::string TruncateToWidth(const std::string& text, ImFont* font, float fontSize, float maxWidth) {
+    if (text.empty() || !font || maxWidth <= 0.0f) return text;
+    if (font->CalcTextSizeA(fontSize, FLT_MAX, 0.0f, text.c_str()).x <= maxWidth) return text;
+    const int n = static_cast<int>(text.size());
+    for (int f = n / 2; f >= 3; --f) {
+        const int b = (f - 2 > 3) ? (f - 2) : 3;             // keep the two halves roughly equal
+        std::string t = text.substr(0, f) + "..." + text.substr(n - b);
+        if (font->CalcTextSizeA(fontSize, FLT_MAX, 0.0f, t.c_str()).x <= maxWidth) return t;
+    }
+    return n > 6 ? (text.substr(0, 3) + "..." + text.substr(n - 3)) : text;
+}
+
 // Animated "loading" ellipsis: "", ".", "..", "..." cycling on a ~3Hz phase.
 inline const char* LoadingDots() {
     int n = ((int)(ImGui::GetTime() * 3.0f)) % 4;

src/ui/windows/balance_address_list.cpp

@@ -70,6 +70,7 @@ AddressRowLayout ComputeAddressRowLayout(float rowX,
                                          float spacingSm,
                                          float spacingXs)
 {
+    (void)spacingXs;  // trailing button now insets by rowPadLeft (mirrors the left margin)
     AddressRowLayout layout;
     layout.contentStartX = rowX + rowPadLeft;
     layout.contentStartY = rowY + spacingMd;
@@ -77,7 +78,9 @@ AddressRowLayout ComputeAddressRowLayout(float rowX,
 
     const float buttonY = rowY + (rowHeight - layout.buttonSize) * 0.5f;
     const float rightEdge = rowX + rowWidth;
-    const float favoriteX = rightEdge - layout.buttonSize - spacingXs;
+    // Inset the trailing (favorite/star) button by the card's inner padding — the same margin the
+    // left content uses (rowPadLeft) — so it mirrors the left edge instead of hugging the card edge.
+    const float favoriteX = rightEdge - layout.buttonSize - rowPadLeft;
     const float visibilityX = favoriteX - spacingSm - layout.buttonSize;
 
     layout.favoriteButton = {favoriteX, buttonY, layout.buttonSize, layout.buttonSize};

src/ui/windows/contacts_tab.cpp

@@ -1097,6 +1097,10 @@ void RenderContactsTab(App* app)
             }
             ImGui::EndTable();
         }
+        // Land the cursor at the glass-panel bottom (tpMin.y + listH) so the count footer lines up
+        // with the Cards/List views. The table is inset by tVpad and its outer_size is listH-2*tVpad,
+        // so it would otherwise end tVpad higher and pull the footer up.
+        ImGui::SetCursorScreenPos(ImVec2(tpMin.x, tpMin.y + listH));
     } else {
         // ── CARDS (0) / LIST (1) mode — tactile Material items, no grid lines. ──
         const bool asCard = (viewMode == 0);

src/ui/windows/export_all_keys_dialog.cpp

@@ -211,12 +211,11 @@ void ExportAllKeysDialog::render(App* app)
                         std::string filepath = configDir + "/" + filename;
                         bool writeOk = false;
                         if (exported > 0) {
-                            std::ofstream file(filepath);
-                            if (file.is_open()) {
-                                file << keys;
-                                file.close();
-                                writeOk = true;
-                            }
+                            // Write the plaintext private keys 0600 + atomically (never
+                            // world/group-readable, never a half-written file) — the same restricted
+                            // atomic-write idiom the PIN vault uses. A default ofstream would create
+                            // the key dump with umask-derived (often 0644) permissions.
+                            writeOk = util::Platform::writeFileAtomically(filepath, keys, /*restrictPermissions=*/true);
                         }
                         if (!keys.empty()) sodium_memzero(&keys[0], keys.size());  // don't leave every key in freed heap
 

src/ui/windows/export_transactions_dialog.cpp

@@ -36,21 +36,30 @@ static bool s_exporting = false;
 // Helper to escape CSV field
 static std::string escapeCSV(const std::string& field)
 {
-    if (field.find(',') != std::string::npos || 
-        field.find('"') != std::string::npos ||
-        field.find('\n') != std::string::npos) {
+    // Neutralize spreadsheet formula injection: a field beginning with '=', '+', '-', '@',
+    // tab, or CR is interpreted as a formula by Excel/LibreOffice, letting an attacker-supplied
+    // memo/address execute on open. Prefix such fields with a single quote so they render as text.
+    std::string safe = field;
+    if (!safe.empty()) {
+        const char c0 = safe.front();
+        if (c0 == '=' || c0 == '+' || c0 == '-' || c0 == '@' || c0 == '\t' || c0 == '\r')
+            safe.insert(safe.begin(), '\'');
+    }
+    if (safe.find(',') != std::string::npos ||
+        safe.find('"') != std::string::npos ||
+        safe.find('\n') != std::string::npos) {
         // Escape quotes and wrap in quotes
         std::string escaped;
-        escaped.reserve(field.size() + 4);
+        escaped.reserve(safe.size() + 4);
         escaped += '"';
-        for (char c : field) {
+        for (char c : safe) {
             if (c == '"') escaped += "\"\"";
             else escaped += c;
         }
         escaped += '"';
         return escaped;
     }
-    return field;
+    return safe;
 }
 
 void ExportTransactionsDialog::show()

src/ui/windows/mining_controls.cpp

@@ -57,7 +57,10 @@ void RenderMiningControls(App* app, const WalletState& state, const MiningInfo&
 
         // --- Compute thread grid layout based on controls card width ---
         // Estimate controlsW first to compute cols correctly
-        float estControlsW = availWidth - std::min(schema::UI().drawElement("tabs.mining", "button-max-width-clamp").size, miningBtnMaxW) - miningBtnGap;
+        // The Mine button is square (= card height, which scales with DPI), so the width we
+        // reserve for it here must scale too — a RAW clamp under-reserves at >100% scaling, which
+        // over-estimates the grid width and lets the thread cells overflow the card (e.g. at 150%).
+        float estControlsW = availWidth - std::min(schema::UI().drawElement("tabs.mining", "button-max-width-clamp").size * dp, miningBtnMaxW) - miningBtnGap;
         float innerW  = estControlsW - pad * 2;
         float cellSz  = std::clamp(schema::UI().drawElement("tabs.mining", "cell-size").size * vs, schema::UI().drawElement("tabs.mining", "cell-min-size").size, schema::UI().drawElement("tabs.mining", "cell-max-size").sizeOr(42.0f));
         float cellGap = std::max(schema::UI().drawElement("tabs.mining", "cell-gap-min").size, cellSz * schema::UI().drawElement("tabs.mining", "cell-gap-ratio").size);

src/ui/windows/mining_mode_toggle.cpp

@@ -308,11 +308,14 @@ void RenderMiningModeToggle(App* app, const WalletState& state, const MiningInfo
                             pdl->AddRectFilled(rowMin, rowMax, IM_COL32(255, 255, 255, 10));
                         if (rowHov && !inXZone)
                             pdl->AddRectFilled(rowMin, rowMax, StateHover());
-                        // Item text with internal padding
+                        // Item text with internal padding, middle-truncated so a long saved URL
+                        // can't run under the trailing X (delete) button.
                         float textY = rowMin.y + (rowH - rowFontSz) * 0.5f;
+                        float maxTextW = popupInnerW - xZoneW - textPadX * 2.0f;
+                        std::string urlDisp = material::TruncateToWidth(url, rowFont, rowFontSz, maxTextW);
                         pdl->AddText(rowFont, rowFontSz,
                             ImVec2(rowMin.x + textPadX, textY),
-                            isCurrent ? Primary() : OnSurface(), url.c_str());
+                            isCurrent ? Primary() : OnSurface(), urlDisp.c_str());
                         // X button — flush with right edge, icon centered
                         {
                             ImVec2 xMin(rowMax.x - xZoneW, rowMin.y);
@@ -467,11 +470,14 @@ void RenderMiningModeToggle(App* app, const WalletState& state, const MiningInfo
                             pdl->AddRectFilled(rowMin, rowMax, IM_COL32(255, 255, 255, 10));
                         if (rowHov && !inXZone)
                             pdl->AddRectFilled(rowMin, rowMax, StateHover());
-                        // Full address text with internal padding
+                        // Address text with internal padding, middle-truncated so a full z-address
+                        // (~78 chars) can't run under the trailing X (delete) button.
                         float textY = rowMin.y + (wRowH - wRowFontSz) * 0.5f;
+                        float wMaxTextW = wPopupInnerW - wXZoneW - wTextPadX * 2.0f;
+                        std::string addrDisp = material::TruncateToWidth(addr, wRowFont, wRowFontSz, wMaxTextW);
                         pdl->AddText(wRowFont, wRowFontSz,
                             ImVec2(rowMin.x + wTextPadX, textY),
-                            isCurrent ? Primary() : OnSurface(), addr.c_str());
+                            isCurrent ? Primary() : OnSurface(), addrDisp.c_str());
                         // Tooltip for long addresses
                         if (rowHov && !inXZone)
                             material::Tooltip("%s", addr.c_str());

src/util/bootstrap.cpp

@@ -31,6 +31,31 @@ static bool endsWith(const std::string& s, const std::string& suffix) {
     return s.compare(s.size() - suffix.size(), suffix.size(), suffix) == 0;
 }
 
+// Reject archive member names that would escape the extraction root (zip-slip).
+// The snapshot legitimately carries sub-paths (blocks/, chainstate/), so — unlike the
+// updaters, which flatten to baseName() — we keep the relative path but refuse any entry
+// that is absolute, drive/UNC-rooted, or contains a ".." component.
+static bool isSafeArchivePath(const std::string& name) {
+    if (name.empty()) return false;
+    std::string n = name;
+    std::replace(n.begin(), n.end(), '\\', '/');   // normalize Windows separators
+    if (n.front() == '/') return false;             // absolute POSIX path
+    const char c0 = n[0];
+    if (n.size() >= 2 && n[1] == ':' &&
+        ((c0 >= 'A' && c0 <= 'Z') || (c0 >= 'a' && c0 <= 'z')))
+        return false;                               // Windows drive letter (C:...)
+    size_t start = 0;
+    while (start <= n.size()) {
+        const size_t slash = n.find('/', start);
+        const std::string comp =
+            n.substr(start, slash == std::string::npos ? std::string::npos : slash - start);
+        if (comp == "..") return false;             // path traversal component
+        if (slash == std::string::npos) break;
+        start = slash + 1;
+    }
+    return true;
+}
+
 static size_t writeFileCallback(void* contents, size_t size, size_t nmemb, void* userp) {
     size_t total = size * nmemb;
     FILE* fp = static_cast<FILE*>(userp);
@@ -383,6 +408,16 @@ bool Bootstrap::extract(const std::string& zipPath, const std::string& dataDir)
 
         std::string filename = stat.m_filename;
 
+        // *** SECURITY: reject zip-slip / path-traversal entries before building any path ***
+        // A legitimate snapshot from the project host never contains these; an entry that does
+        // indicates a malicious/corrupt archive, so abort rather than silently skip.
+        if (!isSafeArchivePath(filename)) {
+            DEBUG_LOGF("[Bootstrap] Unsafe archive path rejected: %s\n", filename.c_str());
+            setProgress(State::Failed, "Refusing to extract unsafe archive entry: " + filename);
+            mz_zip_reader_end(&zip);
+            return false;
+        }
+
         // *** CRITICAL: Skip wallet.dat ***
         if (filename == "wallet.dat" || endsWith(filename, "/wallet.dat")) {
             DEBUG_LOGF("[Bootstrap] Skipping wallet.dat (protected)\n");

src/util/http_download.cpp

@@ -19,10 +19,19 @@ namespace util {
 
 namespace {
 
+// Cap for in-memory text/JSON responses (release metadata, price/candle data). Far above any
+// legitimate body, but bounds memory if a hostile/MITM'd server streams an unbounded response.
+constexpr std::size_t kMaxMetadataBytes = 16u * 1024 * 1024;
+
 size_t writeStringCb(void* contents, size_t size, size_t nmemb, void* userp)
 {
-    static_cast<std::string*>(userp)->append(static_cast<char*>(contents), size * nmemb);
-    return size * nmemb;
+    auto* s = static_cast<std::string*>(userp);
+    const size_t n = size * nmemb;
+    // Hard cap: a chunked response omits Content-Length, so CURLOPT_MAXFILESIZE cannot catch it —
+    // aborting here (short count) makes curl fail the transfer instead of exhausting memory.
+    if (s->size() + n > kMaxMetadataBytes) return 0;
+    s->append(static_cast<char*>(contents), n);
+    return n;
 }
 
 size_t writeFileCb(void* contents, size_t size, size_t nmemb, void* userp)
@@ -52,6 +61,7 @@ std::string httpGetString(const std::string& url, const char* logTag)
     curl_easy_setopt(curl, CURLOPT_USERAGENT, "ObsidianDragon/1.0");
     curl_easy_setopt(curl, CURLOPT_TIMEOUT, 30L);
     curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 15L);
+    curl_easy_setopt(curl, CURLOPT_MAXFILESIZE_LARGE, static_cast<curl_off_t>(kMaxMetadataBytes));  // reject oversized metadata
     curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1L);
     curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2L);
     const CURLcode res = curl_easy_perform(curl);

src/util/pool_registry_core.cpp

@@ -30,14 +30,6 @@ const std::vector<KnownPool>& knownPools()
             "https://pool.dragonx.is/api/stats", PoolStatsSchema::DragonXIs,
             /*miningcorePoolId=*/"", /*feePercent=*/0.0, /*official=*/true,
         },
-        KnownPool{
-            // The mining (stratum) host is us.dragonx.cc — pool.dragonx.cc is the
-            // Cloudflare-proxied web/API host and does NOT accept stratum on :3333.
-            // Stats still come from pool.dragonx.cc/api/pools (proxied HTTP is fine).
-            "dragonx-cc-pplns", "pool.dragonx.cc", "us.dragonx.cc:3333", "rx/dragonx",
-            "https://pool.dragonx.cc/api/pools", PoolStatsSchema::Miningcore,
-            /*miningcorePoolId=*/"dragonx-pplns", /*feePercent=*/3.0, /*official=*/true,
-        },
     };
     return pools;
 }

src/util/xmrig_updater.cpp

@@ -314,6 +314,12 @@ void XmrigUpdater::installResolved(const std::string& targetDir, const XmrigRele
                     return;
                 }
             }
+        } else if (kXmrigRequireSignature) {
+            // Signatures are required but no key is pinned in this build: fail closed rather than
+            // silently downgrading to checksum-only (the checksum is same-origin as the archive).
+            fs::remove(zipPath, ec);
+            setProgress(State::Failed, "No signing key is pinned in this build — refusing to install.");
+            return;
         }
     }
 

src/wallet/lite_connection_service.cpp

@@ -81,10 +81,56 @@ LiteConnectionSettings defaultLiteConnectionSettings()
     return settings;
 }
 
+// Strict dotted-decimal check for the 127.0.0.0/8 loopback block: exactly four numeric octets
+// (each 0-255) with the first equal to 127. This must NOT be a prefix match — "127.0.0.1.evil.com"
+// and "127.evil.com" are attacker-controlled DNS names that a startsWith("127.") test would wrongly
+// treat as loopback, reopening the plaintext-downgrade hole.
+static bool isNumericIpv4Loopback(const std::string& h)
+{
+    int parts = 0;
+    size_t start = 0;
+    while (true) {
+        const size_t dot = h.find('.', start);
+        const std::string seg = h.substr(start, dot == std::string::npos ? std::string::npos : dot - start);
+        if (seg.empty() || seg.size() > 3) return false;
+        int v = 0;
+        for (char c : seg) { if (c < '0' || c > '9') return false; v = v * 10 + (c - '0'); }
+        if (v > 255) return false;
+        if (parts == 0 && v != 127) return false;   // 127.0.0.0/8 only
+        ++parts;
+        if (dot == std::string::npos) break;
+        start = dot + 1;
+    }
+    return parts == 4;
+}
+
+static bool isLoopbackLiteHostSpec(const std::string& hostPort)
+{
+    std::string h = hostPort;
+    const size_t term = h.find_first_of("/?#");   // strip path/query/fragment
+    if (term != std::string::npos) h = h.substr(0, term);
+    const size_t at = h.rfind('@');               // strip userinfo (user:pass@host)
+    if (at != std::string::npos) h = h.substr(at + 1);
+    if (!h.empty() && h.front() == '[') {         // [::1]:port  (bracketed IPv6)
+        const size_t close = h.find(']');
+        h = (close == std::string::npos) ? h : h.substr(1, close - 1);
+    } else {                                      // host or host:port
+        const size_t colon = h.find(':');
+        if (colon != std::string::npos) h = h.substr(0, colon);
+    }
+    return h == "localhost" || h == "::1" || isNumericIpv4Loopback(h);
+}
+
 bool isLiteServerUrlUsable(const std::string& serverUrl)
 {
     const std::string normalized = liteTrimCopy(serverUrl);
-    return startsWith(normalized, "https://") || startsWith(normalized, "http://");
+    if (startsWith(normalized, "https://")) return true;
+    // SECURITY: plaintext http:// is a TLS downgrade for lightwalletd traffic (view keys,
+    // transactions, addresses). Permit it only for loopback (a local dev lightwalletd);
+    // reject remote plaintext servers instead of silently accepting the downgrade.
+    if (startsWith(normalized, "http://"))
+        return isLoopbackLiteHostSpec(normalized.substr(sizeof("http://") - 1));
+    return false;
 }
 
 bool isOfficialLiteServer(const std::string& serverUrl)

src/wallet/lite_wallet_controller.cpp

@@ -1066,7 +1066,16 @@ LiteEncryptionResult LiteWalletController::encryptWallet(std::string passphrase)
     }
     out = parseEncryptionOpResponse(bridge_->execute("encrypt", passphrase));
     secureWipeLiteSecret(passphrase);
-    if (out.ok) bridge_->execute("save", "");  // persist the now-encrypted wallet
+    if (out.ok) {
+        // Persist the now-encrypted wallet. If the save fails, do NOT report success — the
+        // on-disk wallet would still be unencrypted, contradicting what the user was told.
+        const auto saved = bridge_->execute("save", "");
+        if (!saved.ok) {
+            out.ok = false;
+            out.error = "wallet encrypted in memory but saving to disk failed" +
+                        (saved.error.empty() ? std::string() : (": " + saved.error));
+        }
+    }
     return out;
 }
 
@@ -1084,7 +1093,16 @@ LiteEncryptionResult LiteWalletController::decryptWallet(std::string passphrase)
     }
     out = parseEncryptionOpResponse(bridge_->execute("decrypt", passphrase));
     secureWipeLiteSecret(passphrase);
-    if (out.ok) bridge_->execute("save", "");  // persist the now-unencrypted wallet
+    if (out.ok) {
+        // Persist the now-unencrypted wallet. If the save fails, do NOT report success — the
+        // on-disk wallet would still be encrypted, contradicting what the user was told.
+        const auto saved = bridge_->execute("save", "");
+        if (!saved.ok) {
+            out.ok = false;
+            out.error = "wallet decrypted in memory but saving to disk failed" +
+                        (saved.error.empty() ? std::string() : (": " + saved.error));
+        }
+    }
     return out;
 }
 

tests/test_phase4.cpp

@@ -3434,9 +3434,11 @@ void testBalanceAddressListModel()
     EXPECT_NEAR(layout.contentStartX, 22.0, 0.0001);
     EXPECT_NEAR(layout.contentStartY, 26.0, 0.0001);
     EXPECT_NEAR(layout.buttonSize, 38.0, 0.0001);
-    EXPECT_NEAR(layout.favoriteButton.x, 270.0, 0.0001);
-    EXPECT_NEAR(layout.visibilityButton.x, 228.0, 0.0001);
-    EXPECT_NEAR(layout.contentRight, 224.0, 0.0001);
+    // Trailing (favorite) button is inset by rowPadLeft (12) so it mirrors the left margin
+    // instead of hugging the card edge: 310 - 38 - 12 = 260.
+    EXPECT_NEAR(layout.favoriteButton.x, 260.0, 0.0001);
+    EXPECT_NEAR(layout.visibilityButton.x, 218.0, 0.0001);
+    EXPECT_NEAR(layout.contentRight, 214.0, 0.0001);
     EXPECT_EQ(dragonx::ui::FormatAddressUsdValue(2.0, 3.5), std::string("$7.00"));
     EXPECT_EQ(dragonx::ui::FormatAddressUsdValue(0.001, 2.0), std::string("$0.002000"));
     EXPECT_EQ(dragonx::ui::FormatAddressUsdValue(0.0, 2.0), std::string(""));
@@ -5774,23 +5776,20 @@ void testXmrigLiveInstall()
 void testPoolRegistryLookup()
 {
     using namespace dragonx::util;
-    EXPECT_EQ(knownPools().size(), static_cast<std::size_t>(2));
+    // pool.dragonx.cc was removed from the built-in defaults; pool.dragonx.is is the sole entry.
+    EXPECT_EQ(knownPools().size(), static_cast<std::size_t>(1));
 
-    // The algo follows the pool. Note pool.dragonx.cc's stratum host is us.dragonx.cc
-    // (the .cc domain is only the Cloudflare-proxied web/API host).
-    EXPECT_EQ(resolvePoolAlgo("us.dragonx.cc:3333", "rx/hush"), std::string("rx/dragonx"));
+    // The algo follows the pool: pool.dragonx.is resolves to rx/hush regardless of the caller default.
     EXPECT_EQ(resolvePoolAlgo("pool.dragonx.is:3433", "rx/dragonx"), std::string("rx/hush"));
-    // Bare host (no port) still matches; scheme + path are tolerated.
-    EXPECT_EQ(resolvePoolAlgo("us.dragonx.cc", "rx/hush"), std::string("rx/dragonx"));
-    EXPECT_EQ(resolvePoolAlgo("stratum+tcp://us.dragonx.cc:3333/x", "rx/hush"),
-              std::string("rx/dragonx"));
-    // Unknown host -> fallback algo.
+    // The former us.dragonx.cc (pool.dragonx.cc) host is now unknown -> caller's fallback algo.
+    EXPECT_EQ(resolvePoolAlgo("us.dragonx.cc:3333", "rx/hush"), std::string("rx/hush"));
     EXPECT_EQ(resolvePoolAlgo("my.pool.example:1234", "rx/hush"), std::string("rx/hush"));
 
-    EXPECT_TRUE(findKnownPoolByUrl("us.dragonx.cc:3333") != nullptr);
+    EXPECT_TRUE(findKnownPoolByUrl("pool.dragonx.is:3433") != nullptr);
+    EXPECT_TRUE(findKnownPoolByUrl("us.dragonx.cc:3333") == nullptr);  // removed built-in default
     EXPECT_TRUE(findKnownPoolByUrl("unknown.host:1") == nullptr);
     // A mismatched explicit port must NOT match a known pool.
-    EXPECT_TRUE(findKnownPoolByUrl("us.dragonx.cc:9999") == nullptr);
+    EXPECT_TRUE(findKnownPoolByUrl("pool.dragonx.is:9999") == nullptr);
 }
 
 // Schema-aware pool hashrate parsing (the two pools speak different APIs).

third_party/silentdragonxlite/lib/rust-toolchain.toml

@@ -0,0 +1,12 @@
+# Rust toolchain pin for the vendored SilentDragonXLite (SDXL) backend.
+#
+# The pinned librustzcash + transitive crates (notably traitobject 0.1.0) rely on
+# pre-1.70 trait-coherence rules and fail to compile on newer rustc with
+#   error[E0119]: conflicting implementations of trait `Trait` for type `(dyn Send + Sync)`
+# so the backend must be built with 1.63 (the toolchain scripts/build-lite-backend-artifact.sh
+# and CLAUDE.md target). rustup auto-selects this when cargo runs in this tree, so no
+# RUSTUP_TOOLCHAIN / `cargo +1.63.0` is needed.
+#
+# Install it once with:  rustup toolchain install 1.63.0
+[toolchain]
+channel = "1.63.0"