Add Pip-Boy state to transform sync

Adds optional `isPipboyOpen` to transform packets, remote player state, proxy animation logging, and fake client/player samples. Updates protocol and architecture docs to describe the new Pip-Boy open/raising/closing state and related movement-state handling.

protocol/player-sync.md

@@ -67,6 +67,7 @@ isSneaking
 isJumping
 isCrouching
 weaponDrawn
+isPipboyOpen
 movementSpeed
 animationGraphSpeed
 equippedItems
@@ -78,8 +79,8 @@ Required transform packet fields are `type`, `playerId`, `x`, `y`, `z`,
 `angleZ`, and `cellId`. `worldspaceId`, `movementType`, `clientTime`, and
 `serverTime` are optional; interior test cells may omit `worldspaceId`.
 Movement state fields are also optional and default to not moving, not
-sprinting, not sneaking, not jumping, weapon holstered, and speed `0.0` when
-missing.
+sprinting, not sneaking, not jumping, weapon holstered, Pip-Boy closed, and
+speed `0.0` when missing.
 
 `equippedItems` is also optional. New clients send it as a complete snapshot of
 tracked visible apparel slots with `{ slot, formId }` entries; empty `formId`
@@ -125,7 +126,7 @@ player exists.
   local test cell, then snaps back to a valid same-cell remote player before
   resuming smoothing.
 - Transform packets include movement state data (`isMoving`, `movementSpeed`,
-  `isSprinting`, `isSneaking`, `isJumping`, `weaponDrawn`).
+  `isSprinting`, `isSneaking`, `isJumping`, `weaponDrawn`, `isPipboyOpen`).
 - Transform packets can include optional `equippedItems` snapshots for visible
   clothing, armor, hats, and eyewear slots. The game-thread proxy controller
   applies those snapshots after proxy 3D is loaded.