Fixes#2462
## Summary
Removes the per-object `VirtualHairInfo` heap wrapper for mobile/corpse hair. Hair is now stored **inline** on `Mobile` and `Corpse` as `int _hairItemId` / `int _hairHue` plus a lazily-allocated, **non-serialized** ephemeral `Serial _hairSerial` (in the high virtual-serial range) — and likewise for facial hair. The `VirtualHairInfo` class is deleted, with a **lossless** save migration.
This delivers three things:
1. **Fixes a hair-removal bug.** `Delta(MobileDelta.Hair)` is deferred (it enqueues; `ProcessDeltaQueue` runs later in the tick). The old `HairItemID = 0` setter nulled `_hair` *immediately*, so by the time `ProcessDelta` built the remove packet the equipped virtual serial was already gone — the old `??=` code then re-materialized a **fresh** serial (≠ the equipped one), so clients never removed the right entity, and it left a phantom ItemId-0 object behind. The serial now lives on the entity and **persists across removal**, so remove packets carry the correct serial.
2. **Lightens the entity.** No heap hair object; bald mobiles allocate nothing (the serial is minted lazily only when hair is present). This was the original reason `HairItemID`/`HairHue` exist.
3. **Removes `VirtualHairInfo` entirely**, keeping the high-range virtual serial behavior.
## How
- **Mobile** (manual serialization): inline `_hairItemId/_hairHue/_hairSerial` (+facial); lazy `HairSerial`/`FacialHairSerial`; `ProcessDelta` reads those. Serialization **v36 → v37** — the v30-v37 deserialize is unified, reading the legacy per-hair `VirtualHairInfo` version int only when `version < 37`. Setting item id to 0 clears the hue (matching the old object-nulling) while retaining the serial.
- **Corpse** (codegen serialization): decomposed to `[SerializableField] int _hairItemId/_hairHue` (+facial) + ephemeral serial; **v16 → v17** with `MigrateFrom(V16Content)`.
- **Lossless migration:** the loader validates exact byte length, and the old corpse hair is a presence-bool-gated block, so a tiny **migration-only** `LegacyHairInfo` reader (no runtime role) consumes the legacy `[bool][int ver][int itemId][int hue]` bytes. Frozen `Corpse.v14/v15/v16.json` are retyped to it; `v17.json` describes the new int fields.
- All consumers updated to discrete accessors: `OutgoingMobilePackets`, `CorpsePackets`, corpse subclasses (`MilitiaFighterCorpse`, `SchmendrickApprenticeCorpse`), and the packet test mirrors.
- `VirtualHair.cs` renamed to `OutgoingVirtualHairPackets.cs` (the only type left in it after `VirtualHairInfo` was removed).
## Test Plan
- [x] Full solution build: **0 warnings, 0 errors** (`TreatWarningsAsErrors`).
- [x] `Server.Tests`: **708 passed** (incl. new `RemoveHairUsesEquippedSerial` / `RemoveFacialHairUsesEquippedSerial` proving the serial survives removal + hue clears).
- [x] `UOContent.Tests` corpse/hair: **6 passed** (incl. `CorpseHairMigrationTests` asserting the legacy hair bytes are consumed exactly — the loader's length invariant).
- [x] Generated migration code inspected: V14/V15/V16 readers consume the legacy block byte-for-byte; serial never written to disk.
## Upgrade notes
- Old Mobile (v30–v36) and Corpse (v13–v16) saves load losslessly.
- Minor cosmetic-only change: `SchmendrickApprenticeCorpse` hair/facial-hair RNG draws shift order within each pair (same draw count); irrelevant for a quest NPC corpse.
### Summary
- Adds [Code Generated Events](https://github.com/modernuo/CodeGeneratedEvents)
- Removes EventSink.PlayerDeath
- Adds `PlayerDeathEvent` and `CreatureDeathEvent` using code generated events
> [!Important]
> **Developer Note**
> Use `[OnEvent(nameof(PlayerMobile.PlayerDeathEvent))]` instead of `EventSink.PlayerDeath` delegate
> Check this commit for examples of how to use this.
### Summary
* Added World.NewVirtual for creating virtual serial numbers
* Reserved range 0x7EEEEEEE to 0x7FFFFFFF for virtual serials
* Hair and Facial hair (for mobiles) now use virtual serials instead of FakeSerial() functions
* Consolidated virtual hair to a single `VirtualHairInfo` class.
Corpse hair and facial hair now persists across save/load and hair and facial hair no longer teleport to newest corpse.
**Only one functional change**
* Fixes a bug in LogFactory where `Warning` is being logged as `Information`
Non-functional changes:
* Updates/Fixes copyright headers
* Removes namespace scopes for core files.
View with [whitespace off](https://github.com/modernuo/ModernUO/pull/1187/files?w=1).
* Fixes a bug with the main loop. Removes unnecessary optimizations for RDRand.
* WIP - Rewriting packets.
* Cleanup and updates README
* Converts more packets
* Fixes header
* Converts Effects packets.
* Forgot the send command
* Adds the start of containers packets.
* Adds message packets with caching
* Extends the send methods
* Starts to add Acquire methods
* Converted the packets
* Cleanup
* Cleanup
* Adds more packets
* Adds more packets
* Fixes clearing arrays from pool. Adds Mobile Incoming
* Converts more packets.
* Moves more packets
* Moves more packets
* Test compression
* Merges
* Migrating to an idiomatic syntax that also supports compression, and proxying.
* Optimize the stack alloc. Changes attributes
* Converted container packets
* Visual Studio doesn't auto save files. I am still getting used to subpar IDEs.
* Adds static packet caching. Will profile later. Converts more packets
* Fixes packets and changes how compression is configured
* WIP - Adds basics for Gumps. Not finished though.
* Fix file
* Fixes formatting
* Changed SpanWriter to be more idiomatic.
* Fixes Span vs RawSpan and missing stackallocs
* Converts over some more gumps
* WIP - Deletes 32bit support.
* Drops RDRand32 support.
* Fixes gump compilation
* Converting gump components
* Removes old huffman compression function
* Revert signature for backwards compatibility
* WIP - Converting more gump components
* Creates ArraySet for the strings. Updates AppendTo to reference that.
* Converts the maining gump components
* Cleans up gump components
* Cleans up directives
* Cleans up ArraySet and moves it. Adds null-coalescing-assignment
* Cleanup, Target Packets, and C# 8 changes.
* Removed OPL Packet
* World packets
* Fixing packet uses
* Cleans up code. Fixes packet uses in various places.
* More cleanup for packets
* Code cleanup
* Converts more packet uses and cleans up more code
* More code cleanup
* Finishes fixing the packets in Item
* Updates secure trade packets
* Updates core and gets it to compile.
* Moved packets to scripts. Fixed account handler use of packets
* Code cleanup
* Updates chat packets
* Code cleanuo
* Adds party packets, but need to implement them.
* Party packets WIP
* Finishes party packets
* Rearrange movement namespaces and classes
* Finishes plant packets
* Code Formatting
* Fixes moving effects
* Code cleanup, eliminates equipinfo
* Adds more packets. Fixes bugs with various packets.
* Finishes mahjon packets
* Fixes mahjong packet
* Code cleanup
* Finishes mahjong packets
* Adds Map packets
* Add multifacet maps and charts
* Cleans up some packets with UTF8
* Optimizes packets
* Cleans up more packets. Moves the MessageHelper
* Removes assistant support. Removes extended protocol. Incorporates MapUO packets as normal packets.
* Updates protocol extensions packet receiver
* Fixes a few bugs. Fixes a few more packets.
* Code cleanup and fixing more packets
* Fixes packet effects
* Cleaned up more code
* Buff Icon cleanup
* Removed unused constructors
* Code Cleanup. Adds BoatHS Packets
* Moves house files. Updates house foundation packets.
* Deployment cleanup
* Fixes:
* Code cleanup
* More code cleanup
* More code cleanup
* Cleaned up BaseHouse
* Enforces styling
* Converts foreach to linq where possible.
* Dont need that
* Goals/Readme updates
* Removes 32bit support at the highest level. Turns on HRT by default.
* Code cleanup. Fixes extended features packet.
* Fixes various bugs
* Code cleanup
* Code cleanup
* Code cleanup. Fixes gump X/Y assignment.
* Code cleanup using |= operator
* More code cleanup
* Cleanup
* Fixes spacing issues. Thanks Visual Studio. You suck.
* Compiler error
* Fixes NPE from RunUO 2.7
* Renames ScriptCompiler to AssemblyHandler. Fixes packets. Updates README
* Fixes more packets. Stupid trailing nulls.
* Fixes various bugs.
* Fixes for gumps
* Fixes more gump stuff. Going to split it out later since it is getting insane
* Recoded the gump writing
* WIP
* *Added output path of scripts project to dev branch
*Activated debugging in code
