Add Glide vehicle support - #301

Every Glide seat is parented to the chassis, so GetPlayerVehicle resolved
passengers to it too. A passenger could work the lights, siren, signals,
livery and unit number, and a passenger getting out ran the driver-left
path, turning off running, brake and reverse lights and the siren while
the driver was still driving.

GetPlayerVehicle now resolves to the chassis only from Glide seat 1, and
hands passengers their seat back, like a passenger pod on a stock
vehicle. The enter and leave hooks ignore Glide passenger seats.

With that in place the Glide_CanSwitchSeat block is no longer needed:
leaving the driver's seat for another one behaves like getting out, so
drop it rather than stop drivers switching seats.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JQSMwzfwMbz3srta43yhsE

Photon's server SetupCar defined IsBraking and IsReversing on the entity.
Glide defines methods of the same name and reads them back through the
entity table for its own brake and reverse lights and for trailers, so on
the server Glide ran Photon's key-press guess instead of its own brake
input and gear.

Skip those definitions on Glide chassis so the server scan reads Glide's
own methods. On the client, read them directly for every Glide vehicle:
both are built on Glide's networked state, so there is no need for the
key guess or the half-second SimpleNet cache. This also drops the
forward-plus-back key special case, which broke when Glide's controls
were rebound.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JQSMwzfwMbz3srta43yhsE

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JQSMwzfwMbz3srta43yhsE

Ported from livkx's dev/livkx/glide (a71ce15, 03be085) without the Glide
native lighting work in the same commits.

- Photon_GetAutoSkinData and AutoLivery.ApplyTexture no longer pass a nil
  submaterial index when a model has no skin/carpaint material, which is
  common on Glide packs with no livery options.
- ELS-only vehicles never run Photon:SetupCar, so ELS_Blackout and the
  enter and leave hooks check the CAR_* methods exist before calling them.

Co-Authored-By: livkx <15910716+livkx@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JQSMwzfwMbz3srta43yhsE

On the client, NetworkEntityCreated fires before a scripted entity's
IsGlideVehicle and Base can be read. IsPhotonChassis was false at that
moment, so RequestSync skipped the car, and a Glide chassis spawned in
view never received its Photon state: no lights, no controls (seen on
CityRP's SWAT Bearcat; a manual resync fixed it). IsGlideVehicle now
falls back to the class definition, which is registered by then.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(cherry picked from commit 886c466)

…fresh

Lua refresh stacked SetModelScale on a leftover RenderMultiply matrix, so saving a vehicle file changed prop size until respawn, and Matrix:GetAngles() could flip sprite yaw on pitched or rolled mounts.

Co-authored-by: Cursor <cursoragent@cursor.com>
(cherry picked from commit 749a077)

Ported from livkx's dev/livkx/glide (b2b995c) without the Glide vehicle
identity changes in the same commit.

EMVU.Helper and PhotonHUD:GetCurrentState indexed EMVU.Sequences[name]
directly, so a vehicle with no sequences registered yet threw instead of
reporting nothing.

Co-Authored-By: livkx <15910716+livkx@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JQSMwzfwMbz3srta43yhsE

Ported from livkx's dev/livkx/glide (03be085, b2b995c, a1fa4c9) without
the Glide native lighting work in the same commits.

Glide's own spawn menu sets no VehicleName, so Photon fell back to the
chassis class and model and attached a pack to every civilian spawn that
shared them. CityRP also keeps an item id in VehicleName, which hit the
same fallback.

LookupVehiclesEntry now resolves a Glide chassis only from VehicleTable,
PhotonVehicleName, or a VehicleName that names a Vehicles entry.
PhotonVehicleName comes first, so a gamemode can keep VehicleName for its
own use and still name a pack; when it is set but does not resolve,
nothing attaches. RecoverVehicleName and the client class fallback no
longer guess for Glide.

Differences from the original: RecoverVehicleName returns false for Glide
outright, since the lookup it repeated had already failed and its only new
outcome was overwriting VehicleName. HasExplicitVehicleIdentity is left
out because nothing calls it.

Co-Authored-By: livkx <15910716+livkx@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JQSMwzfwMbz3srta43yhsE