feat(R3-W6): LOCAL PLAYER UNIFICATION — edge-driven retail input; UpdatePlayerAnimation + the synthesis layer DELETED (closes J15)

The local player now drives the SAME pipeline remotes use. The
controller's per-frame RawMotionState rebuild (level-triggered D6.2) is
replaced by retail's CommandInterpreter altitude: key EDGES fire
DoMotion/StopMotion (0x00528d20/0x00528530) and the Shift edge fires
set_hold_run (0x00528b70, caller-0x006b33ca shape) — the interpreter's
own RawState mutates via ApplyMotion/RemoveMotion and every dispatch
routes the funnel + DefaultSink into the sequencer. GameWindow's
UpdatePlayerAnimation (169 lines) is DELETED with both
LocalAnimationCommand/LocalAnimationSpeed MovementResult fields and all
three synthesis sites (K-fix5 pacing, Walk→Run cycle selection, the
auto-walk overrides): run pacing now comes from apply_run_to_command's
my_run_rate promotion — the same source remotes use; airborne-Falling
falls out of contact_allows_move (the funnel's second dispatch).
Auto-walk's #69 turn-phase legs re-expressed as DoMotion(Turn*) edges;
teleport idle = StopCompletely (retail's full stop) + an edge-tracker
reset so held keys walk straight out of a portal.

Map discovery R1 fixed: ChargeJump() now fires at charge START (the
0x0056afac input-boundary site) — StandingLongJump had NEVER armed in
production despite the W3 port.

TWO root-cause fixes the cutover surfaced (each would have been
invisible under the old synthesis layer):
- CurrentHoldKey was a shadow FIELD synced only on the raw dispatch
  branch; set_hold_run writes RawState.CurrentHoldKey, so an edge-driven
  Shift toggle followed by DoMotion read a stale None and lost the run
  promotion. Now an alias of RawState.CurrentHoldKey (retail's
  adjust_motion reads raw_state.current_holdkey directly).
- The controller's grounded velocity + jump-launch writes used
  set_local_velocity's default autonomous:false, silently clearing
  LastMoveWasAutonomous and flipping the A3 dual dispatch to the
  interpreted branch for the local player. Both marked autonomous.

EXPECTED-DIFFS (map §6, for the R3 visual pass): #45's 1.248x sidestep
factor + ACDREAM_ANIM_SPEED_SCALE died with UpdatePlayerAnimation —
local sidestep pacing now matches how remotes have always played;
auto-walk-at-run plays walk-pace legs until R4; ApplyServerRunRate's
apply_current_movement goes live (Branch-2 fast re-speed absorbs the
echo — retail's own mid-run speed-change mechanism).

Wire: outbound values stay input-derived (the L.2b-verified byte
stream untouched; RawState-sourcing needs the map §2b cdb TODO and R7
owns outbound). MotionStateChanged = the old comparison minus the dead
localAnimCmd leg, OR any edge fired.

Full suite green: 3,731 passed. Live smoke: in-world, user-driven
input through the new path (walk/turn/strafe), 12k entities, zero
exceptions.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/AcDream.Core.Tests/Physics/MotionNormalizationTests.cs

@@ -149,7 +149,7 @@ public sealed class MotionNormalizationTests
     public void AdjustMotion_HoldKeyInvalid_FallsBackToCurrentHoldKey_PromotesWalkForwardWhenRun()
     {
         var interp = MakeInterp();
-        interp.CurrentHoldKey = HoldKey.Run;
+        interp.RawState.CurrentHoldKey = HoldKey.Run; // R3-W6: CurrentHoldKey aliases RawState
         uint motion = MotionCommand.WalkForward;
         float speed = 1.0f;
 
@@ -164,7 +164,7 @@ public sealed class MotionNormalizationTests
     public void AdjustMotion_HoldKeyNone_DoesNotPromote()
     {
         var interp = MakeInterp();
-        interp.CurrentHoldKey = HoldKey.Run;
+        interp.RawState.CurrentHoldKey = HoldKey.Run; // R3-W6: CurrentHoldKey aliases RawState
         uint motion = MotionCommand.WalkForward;
         float speed = 1.0f;