Update to MC 26.2

[GG-MD]

This updates the mod to run on MC 26.2 @HelixCraft.

26.2 is a big jump from the old 1.20.6 base - Mojang moved to the new versioning
scheme, the client is now unobfuscated, and Yarn mappings are gone. So this isn't
a version bump, it's a full port to official Mojang mappings.

What changed:

• Build: unobfuscated Fabric Loom plugin (net.fabricmc.fabric-loom), no mappings
  block, Gradle 9.6.1, Java 25 toolchain. Loader 0.19.3, Fabric API 0.156.0+26.2.
  The Fabric API modules are pulled in explicitly since the JIJ nested jars don't land
  on the compile classpath otherwise.
• Mixins: retargeted to the renamed network classes (Connection,
  ClientPacketListener, Minecraft). Outgoing packets now hook the real send funnel
  so nothing is missed. Dropped the empty template example mixins.
• Logger + unpackers: ported every packet accessor to the new API. A few packets
  are records now, and inventory clicks only carry hashed stacks in 26.2, so that
  unpacker reports the hash instead of full item data.
• GUI: config screen, color editor and widgets moved to the new
  extractRenderState / GuiGraphicsExtractor render pipeline and the new input
  events. Keybinding uses KeyMappingHelper.

Also fixed a logging gap: the packet whitelist is keyed by the old Yarn names, but
most of them were never mapped to the new Mojang classes, so whole categories
(sounds, titles/subtitles, scoreboard, world border, combat, etc.) never showed up
in the log even when selected. Bundle packets are now unpacked recursively too, so
the entity/spawn packets the server batches inside them are no longer swallowed.

Builds clean (./gradlew build, Java 25). Not yet tested in a live 26.2 client, so
a quick in-game sanity check before merging wouldn't hurt.

[HelixCraft]

Hey @GG-MD , thanks a lot for this! The Mojang-mapping port is a huge lift. really appreciate you taking care of the build setup, the unpackers, and especially catching that whitelist logging gap and the recursive bundle unpacking. That's a genuinely useful fix.
I've merged it into the mc-26.2 branch. Great work!

[HelixCraft]

@GG-MD Hi again, me! I've been busy the last few days and wanted to give you an update on where things stand.
I ported the whole project over to Stonecutter, so it now builds for a full matrix of Minecraft versions: 1.21 through 1.21.11, plus 26.1, 26.1.1, 26.1.2, and 26.2. That means your Mojang-mapping port for 26.2 and the whole versioned build setup are now folded into one shared multi-version tree, and every version builds clean.
I also did a full pass over the packet system:

• Reworked the packet catalog across S2C and C2S — lots of previously missing packets are now logged, and packets that weren't fully unpacked now include their complete data (NBT/Component).
• Kept and verified your fixes around the whitelist logging gap and the recursive bundle unpacking.
• Added a configurable keybind to toggle packet logging on/off.
• Added autosave to the config screen (plus a Cancel button that reverts to the state when the screen was opened) and fixed a search-field focus bug.
• Moved log storage into a dedicated packet-logger folder and enriched the log header with client/session metadata.
  I just published the new 1.1.2 build to Modrinth as well.
  I mainly wanted to check in: is everything looking good/fixed on your side, including in my new Stonecutter branch? Let me know if anything needs another pass.

[GG-MD]

bug:

@HelixCraft, hi thx for new update <3

[GG-MD]

/packetlogger/screen/widget/DualListSelectorWidget.java 156 , 185 , 210 lines.

/packetlogger/screen/SimpleConfigScreen.java 181 line