Remove LOOT integration entirely

The sort button was already hidden on Linux (setVisible(false)) and
the LOOT feedback path (LootDialog -> addLootReport) has always been
Windows-only, meaning the dirty/incompatibilities/missingMasters/messages
tooltip bullets and the dirty-plugin icon could never fire on Linux.
MO2 shipped lootcli + libloot for a load-order sort mechanism that was
unreachable from the UI.

Users who want LOOT can download it from https://github.com/loot/loot
and run it against their instance directly.

- Drop libs/lootcli/, libloot Dockerfile build step, and lootcli
  staging/patchelf in build-inner.sh
- Drop src/src/loot.{cpp,h}, src/src/lootdialog.{cpp,h,ui}
- Extract MarkdownDocument / MarkdownPage (used by UpdateDialog for its
  changelog view) into src/src/markdowndocument.{h,cpp}
- Strip addLootReport, makeLootTooltip, Loot::Plugin field, LOOT icon
  checks, and LOOT tooltip/isProblematic/hasInfo paths from pluginlist
- Delete sortButton widget, updateSortButton(), onSortButtonClicked(),
  and all m_didUpdateMasterList wiring
- Delete lootLogLevel setting, combo box, and "Integrated LOOT" group
  from the diagnostics settings tab

1 files changed, 0 insertions, 1 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a0e4569..2fd7ea7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -152,7 +152,6 @@ add_subdirectory(libs/bsatk)      # static lib, needs dds-header + boost + zlib
 add_subdirectory(libs/libbsarch)  # shared + static, needs dds-header
 add_subdirectory(libs/7zip)        # builds 7z.so from source (Linux only)
 add_subdirectory(libs/archive)    # shared lib, needs dl
-add_subdirectory(libs/lootcli)    # executable, needs Qt6 + boost + libloot + curl
 
 add_subdirectory(libs/uibase)     # shared lib, needs Qt6 + spdlog