feat: responsive compact mail view + folder unread badges

- CompactMailDelegate: card-based view for narrow panels (<420px)
  * Avatar with hash-based color, sender + date (relative format)
  * Subject line with attachment icon
  * Action buttons: flag, delete, category, more (context menu)
  * Unread highlight with light blue background + bold sender
- MailListView: automatic switch between tree/table (wide) and list/cards (narrow)
  * QStackedWidget with QTreeView + QListView sharing same proxy model
  * resizeEvent threshold at 420px
  * Signals forwarded to MainMainWindow for actions
- FolderTreeDelegate: custom paint for folder tree
  * Unread count badge (blue pill) right-aligned on folder nodes
  * Account nodes bold, folder nodes normal weight
  * Proper indentation per depth level
- MailItemDao::countUnreadByFolderId() for real-time unread counts
- MainMainWindow handlers for compact actions (flag, delete, category, more menu)

build/CMakeCache.txt

@@ -1,5 +1,5 @@
 # This is the CMakeCache file.
-# For build in directory: /mnt/c/Users/javie/wino-mail-dtkqt/build
+# For build in directory: /mnt/c/Users/javie/Documents/Codex/2026-08-11/revisar-2/wino-mail-dtkqt/build
 # It was generated by CMake: /usr/bin/cmake
 # You can edit this file to change values found and used by cmake.
 # If you do not want to change any of the values, simply exit the editor.
@@ -22,7 +22,7 @@ CMAKE_AR:FILEPATH=/usr/bin/ar
 
 //Choose the type of build, options are: None Debug Release RelWithDebInfo
 // MinSizeRel ...
-CMAKE_BUILD_TYPE:STRING=Release
+CMAKE_BUILD_TYPE:STRING=
 
 //Enable/Disable color output during build.
 CMAKE_COLOR_MAKEFILE:BOOL=ON
@@ -75,7 +75,7 @@ CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO:STRING=
 CMAKE_EXPORT_COMPILE_COMMANDS:BOOL=
 
 //Value Computed by CMake.
-CMAKE_FIND_PACKAGE_REDIRECTS_DIR:STATIC=/mnt/c/Users/javie/wino-mail-dtkqt/build/CMakeFiles/pkgRedirects
+CMAKE_FIND_PACKAGE_REDIRECTS_DIR:STATIC=/mnt/c/Users/javie/Documents/Codex/2026-08-11/revisar-2/wino-mail-dtkqt/build/CMakeFiles/pkgRedirects
 
 //User executables (bin)
 CMAKE_INSTALL_BINDIR:PATH=bin
@@ -163,6 +163,9 @@ CMAKE_OBJCOPY:FILEPATH=/usr/bin/objcopy
 //Path to a program.
 CMAKE_OBJDUMP:FILEPATH=/usr/bin/objdump
 
+//No help, variable specified on the command line.
+CMAKE_PREFIX_PATH:UNINITIALIZED=/mnt/c/Users/javie/Apps/FreeCAD_1.1.3/bin
+
 //Value Computed by CMake
 CMAKE_PROJECT_COMPAT_VERSION:STATIC=
 
@@ -258,6 +261,19 @@ CMAKE_TAPI:FILEPATH=CMAKE_TAPI-NOTFOUND
 // Studio IDE projects all commands are done without /nologo.
 CMAKE_VERBOSE_MAKEFILE:BOOL=FALSE
 
+//Directory under which to collect all populated content
+FETCHCONTENT_BASE_DIR:PATH=/mnt/c/Users/javie/Documents/Codex/2026-08-11/revisar-2/wino-mail-dtkqt/build/_deps
+
+//Disables all attempts to download or update content and assumes
+// source dirs already exist
+FETCHCONTENT_FULLY_DISCONNECTED:BOOL=OFF
+
+//Enables QUIET option for all content population
+FETCHCONTENT_QUIET:BOOL=ON
+
+//Enables UPDATE_DISCONNECTED behavior for all content population
+FETCHCONTENT_UPDATES_DISCONNECTED:BOOL=OFF
+
 //Path to a file.
 OPENGL_EGL_INCLUDE_DIR:PATH=OPENGL_EGL_INCLUDE_DIR-NOTFOUND
 
@@ -343,6 +359,9 @@ Qt6Widgets_DIR:PATH=/usr/lib/x86_64-linux-gnu/cmake/Qt6Widgets
 //The directory containing a CMake configuration file for Qt6.
 Qt6_DIR:PATH=/usr/lib/x86_64-linux-gnu/cmake/Qt6
 
+//Use mailio-based IMAP synchronizer (requires Boost)
+USE_MAILIO_IMAP:BOOL=OFF
+
 //Path to a program.
 Vulkan_GLSLANG_VALIDATOR_EXECUTABLE:FILEPATH=Vulkan_GLSLANG_VALIDATOR_EXECUTABLE-NOTFOUND
 
@@ -356,13 +375,13 @@ Vulkan_INCLUDE_DIR:PATH=/usr/include
 Vulkan_LIBRARY:FILEPATH=/usr/lib/x86_64-linux-gnu/libvulkan.so
 
 //Value Computed by CMake
-WinoMailQt_BINARY_DIR:STATIC=/mnt/c/Users/javie/wino-mail-dtkqt/build
+WinoMailQt_BINARY_DIR:STATIC=/mnt/c/Users/javie/Documents/Codex/2026-08-11/revisar-2/wino-mail-dtkqt/build
 
 //Value Computed by CMake
 WinoMailQt_IS_TOP_LEVEL:STATIC=ON
 
 //Value Computed by CMake
-WinoMailQt_SOURCE_DIR:STATIC=/mnt/c/Users/javie/wino-mail-dtkqt
+WinoMailQt_SOURCE_DIR:STATIC=/mnt/c/Users/javie/Documents/Codex/2026-08-11/revisar-2/wino-mail-dtkqt
 
 
 ########################
@@ -374,7 +393,7 @@ CMAKE_ADDR2LINE-ADVANCED:INTERNAL=1
 //ADVANCED property for variable: CMAKE_AR
 CMAKE_AR-ADVANCED:INTERNAL=1
 //This is the directory where this CMakeCache.txt was created
-CMAKE_CACHEFILE_DIR:INTERNAL=/mnt/c/Users/javie/wino-mail-dtkqt/build
+CMAKE_CACHEFILE_DIR:INTERNAL=/mnt/c/Users/javie/Documents/Codex/2026-08-11/revisar-2/wino-mail-dtkqt/build
 //Major version of cmake used to create the current loaded cache
 CMAKE_CACHE_MAJOR_VERSION:INTERNAL=4
 //Minor version of cmake used to create the current loaded cache
@@ -435,7 +454,7 @@ CMAKE_GENERATOR_TOOLSET:INTERNAL=
 CMAKE_HAVE_LIBC_PTHREAD:INTERNAL=1
 //Source directory with the top level CMakeLists.txt file for this
 // project
-CMAKE_HOME_DIRECTORY:INTERNAL=/mnt/c/Users/javie/wino-mail-dtkqt
+CMAKE_HOME_DIRECTORY:INTERNAL=/mnt/c/Users/javie/Documents/Codex/2026-08-11/revisar-2/wino-mail-dtkqt
 //ADVANCED property for variable: CMAKE_INSTALL_BINDIR
 CMAKE_INSTALL_BINDIR-ADVANCED:INTERNAL=1
 //ADVANCED property for variable: CMAKE_INSTALL_DATADIR