feat: disasm popup, symbol separation, context menu improvements, RVA fixes

- Add Fadec x86 disassembler with hover popup for FuncPtr/void Pointer nodes
- Separate pointer symbol from address: // prefix, green comment coloring,
  independent hover/click zones (address triggers popup, symbol is passive)
- Fix RVA margin and inline local offset for pointer-expanded vtable children
  using ptrBase field threaded through composition
- Expand multi-select context menu with quick-convert, duplicate, copy address
- Remove Edit Value from hex node context menu
- Fix heatmap flickering on hex nodes (remove per-byte alternation)
- Fix popup repositioning when moving mouse between lines
- Truncate disasm popup to 6 lines with ... indicator
- Add BUILD_UI_TESTS option to skip widget tests on headless CI
- Add test_disasm with 35 test cases for disassembly and hex dump
- Add KUSER_SHARED_DATA example .rcx file

third_party/fadec/.github/workflows/ci.yml

@@ -0,0 +1,51 @@
+name: CI
+
+on: [push]
+
+jobs:
+  build-linux:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install dependencies
+      run: sudo apt install -y ninja-build meson
+    - name: Configure
+      run: mkdir build; CC=clang CXX=clang++ meson -Dbuildtype=debugoptimized -Dwith_encode2=true build
+    - name: Build
+      run: ninja -v -C build
+    - name: Test
+      run: meson test -v -C build
+  build-linux-cmake:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install dependencies
+      run: sudo apt install -y ninja-build cmake
+    - name: Configure
+      run: CC=clang CXX=clang++ cmake -B build -G Ninja -DFADEC_ENCODE2=ON
+    - name: Build
+      run: cmake --build build -v
+    - name: Test
+      run: ctest --test-dir build -V
+  build-windows:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install dependencies
+      run: pip install ninja meson
+    - name: Configure
+      run: mkdir build; meson setup --vsenv -Dbuildtype=debugoptimized -Dwith_encode2=true build
+    - name: Build
+      run: meson compile -v -C build
+    - name: Test
+      run: meson test -v -C build
+  build-windows-cmake:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Configure
+      run: cmake -B build -DFADEC_ENCODE2=ON
+    - name: Build
+      run: cmake --build build -v
+    - name: Test
+      run: ctest --test-dir build -V -C Debug