[common/logging] Simplify logging logic and fix issues when logging before system is created (#3688)

- our logging code was bigger than spdlog itself, why???? just keep it simple
- fix issues when logging before logging system is even started
- removes the "initialized logging twice" issue
- removes uneeded indirection in file logging
- uses direct formatting instead of jumping hoopla-around the fmt::format() ressult
- code duplication and dead code removal as usual

I did explore dup2() but I think it's not worth the hassle
I did try `fwopen()` but it's better if things are just kept as-is.

there is a lot of noise because I removed a bunch of redundant files on logging and just put everything in one file

now normally this wouldn't be a good idea, however consider: the complexity of logging; it's less than 500 lines... does it really need a whole subsystem?!?!?! ITS JUST LOGGING

Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3688
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: DraVee <chimera@dravee.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

src/core/file_sys/card_image.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -6,7 +9,7 @@
 
 #include <fmt/ostream.h>
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/crypto/key_manager.h"
 #include "core/file_sys/card_image.h"
 #include "core/file_sys/content_archive.h"

src/core/file_sys/content_archive.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
@@ -9,7 +9,7 @@
 #include <optional>
 #include <utility>
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include <ranges>
 #include "core/crypto/aes_util.h"
 #include "core/crypto/ctr_encryption_layer.h"

src/core/file_sys/ips_layer.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include <algorithm>
@@ -9,7 +9,7 @@
 #include <utility>
 
 #include "common/hex_util.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/swap.h"
 #include "core/file_sys/ips_layer.h"
 #include "core/file_sys/vfs/vfs_vector.h"

src/core/file_sys/nca_metadata.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
@@ -6,7 +6,7 @@
 
 #include <cstring>
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/swap.h"
 #include "core/file_sys/nca_metadata.h"
 #include "core/file_sys/vfs/vfs.h"

src/core/file_sys/partition_filesystem.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -7,7 +10,7 @@
 #include <iterator>
 #include <utility>
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/file_sys/partition_filesystem.h"
 #include "core/file_sys/vfs/vfs_offset.h"
 #include "core/loader/loader.h"

src/core/file_sys/patch_manager.cpp

@@ -10,7 +10,7 @@
 #include <cstring>
 
 #include "common/hex_util.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/settings.h"
 #ifndef _WIN32
 #include "common/string_util.h"

src/core/file_sys/program_metadata.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
@@ -7,7 +7,7 @@
 #include <cstddef>
 #include <vector>
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/scope_exit.h"
 #include "core/file_sys/program_metadata.h"
 #include "core/file_sys/vfs/vfs.h"

src/core/file_sys/registered_cache.cpp

@@ -11,7 +11,7 @@
 #include "common/assert.h"
 #include "common/fs/path_util.h"
 #include "common/hex_util.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/string_util.h"
 #include "core/crypto/key_manager.h"
 #include "core/file_sys/card_image.h"

src/core/file_sys/romfs_factory.cpp

@@ -1,10 +1,13 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <memory>
 #include "common/assert.h"
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/file_sys/common_funcs.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/nca_metadata.h"

src/core/file_sys/savedata_factory.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
@@ -6,7 +6,7 @@
 
 #include "common/assert.h"
 #include "common/common_types.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "common/uuid.h"
 #include "core/core.h"
 #include "core/file_sys/savedata_factory.h"

src/core/file_sys/submission_package.cpp

@@ -10,7 +10,7 @@
 #include <fmt/ostream.h>
 
 #include "common/hex_util.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/crypto/key_manager.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/nca_metadata.h"

src/core/file_sys/system_archive/system_archive.cpp

@@ -1,7 +1,10 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/file_sys/romfs.h"
 #include "core/file_sys/system_archive/mii_model.h"
 #include "core/file_sys/system_archive/ng_word.h"

src/core/file_sys/system_archive/system_version.cpp

@@ -1,7 +1,10 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/file_sys/system_archive/system_version.h"
 #include "core/file_sys/vfs/vfs_vector.h"
 #include "core/hle/api_version.h"

src/core/file_sys/vfs/vfs_real.cpp

@@ -12,7 +12,7 @@
 #include "common/fs/file.h"
 #include "common/fs/fs.h"
 #include "common/fs/path_util.h"
-#include "common/logging/log.h"
+#include "common/logging.h"
 #include "core/file_sys/vfs/vfs.h"
 #include "core/file_sys/vfs/vfs_real.h"