[Copilot]

DocumentQueue.cpp was compiled into both the doculith executable and the doculith_core library, duplicating compilation and creating a drift risk between the two build targets.

Changes

• Reorder targets: doculith_core is now declared before doculith to reflect the dependency direction
• Single compilation unit: DocumentQueue.cpp removed from doculith sources; built only in doculith_core
• Transitive propagation: doculith_core uses PUBLIC for both target_include_directories(src) and target_link_libraries(nfd), so dependents get headers and nfd automatically
• Link cleanly: doculith links against doculith_core instead of listing nfd directly

add_library(doculith_core src/DocumentQueue.cpp)
target_include_directories(doculith_core PUBLIC src)
target_link_libraries(doculith_core PUBLIC nfd)

add_executable(doculith src/main.cpp src/Application.cpp src/Ui.cpp ...)
target_link_libraries(doculith PRIVATE imgui_lib doculith_core)

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[sromic1990]

LGTM