Hygiene B3: single-sourcing & magic-number consolidation

- StructureCatalogAuthoring: WallCostOre -> WallCostBiomass (it bakes a Biomass cost; [FormerlySerializedAs] preserves the scene value).
- Harvester/Fabricator authoring: resource-id byte defaults reference ResourceId.Ore/.Charge instead of magic 2/4.
- RegionMath.RegionBoundaryX (= ExpeditionOffsetX*0.5) single-sources the region-flip X used by HudSystem + OnboardingSystem (was 500f in 3 places).
- CharacterComponent.DefaultGroundedSharpness single-sources the CC sharpness 15f (GetDefault, DashSystem, PlayerDeathStateSystem, PlayerCharacterAuthoring).
- InventorySlot [InternalBufferCapacity] references Tuning.InventoryMaxSlots.
- ConnectionMode enum -> byte-const class (project convention; removes the latent enum-in-Burst trap); field + one Seed() param become byte.
- Tuning.ChargerWindupTicks single-sources the Charger telegraph windup (EnemyBaker + TuningConfig.Defaults; was a bare 30 that could drift).
- (TicksPerSecond deliberately NOT added: no seconds->ticks conversion site exists; the tick-count fields are per-authoring designer tunables, so a const would be unreferenced.)

451/451 EditMode tests pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Assets/_Project/Scripts/Simulation/Connection/ConnectionConfig.cs

@@ -11,17 +11,19 @@ namespace ProjectM.Simulation
     /// <c>NetworkStreamRequestConnect</c> and clears <see cref="Requested"/>. Direct IP/LAN only for now —
     /// Unity Relay is deferred to a later pass. Created per-world as a singleton.
     /// </summary>
-    public enum ConnectionMode : byte
+    /// <summary>Connection intent values (byte-const, matching the project's op/id convention — not an enum, so
+    /// they stay safe if a consumer is ever [BurstCompile]d). Written to <see cref="ConnectionConfig.Mode"/>.</summary>
+    public static class ConnectionMode
     {
-        None,
-        Host,
-        Join,
+        public const byte None = 0;
+        public const byte Host = 1;
+        public const byte Join = 2;
     }
 
     public struct ConnectionConfig : IComponentData
     {
         /// <summary>What to do with this world's network stream.</summary>
-        public ConnectionMode Mode;
+        public byte Mode;
 
         /// <summary>Dotted IPv4 to connect to (Join). Ignored for Host (binds AnyIpv4).</summary>
         public FixedString64Bytes Address;

Assets/_Project/Scripts/Simulation/Debug/TuningConfig.cs

@@ -74,7 +74,7 @@ namespace ProjectM.Simulation
             RecoverTailTicks = 9f,
             DashCooldownTicks = 36f, // tune: was 45 (0.75s) -> 0.60s, snappier horde-kiter cadence
             DashSharpness = 200f,
-            ChargerWindupTicks = 30f,
+            ChargerWindupTicks = Tuning.ChargerWindupTicks,
             ChargerLungeSpeed = 16f,
             ChargerLungeDurationTicks = 18f,
             ChargerWhiffStaggerTicks = 36f,

Assets/_Project/Scripts/Simulation/Items/InventorySlot.cs

@@ -23,7 +23,7 @@ namespace ProjectM.Simulation
     /// subscene MUST be re-baked (consistently in both worlds) or the connect handshake desyncs.
     /// </summary>
     [GhostComponent(OwnerSendType = SendToOwnerType.All)]
-    [InternalBufferCapacity(24)]
+    [InternalBufferCapacity(Tuning.InventoryMaxSlots)]
     public struct InventorySlot : IBufferElementData
     {
         /// <summary>Item carried in this slot (0 = empty/unused; aligns with InventoryMath's 0-id no-op).</summary>

Assets/_Project/Scripts/Simulation/Player/CharacterComponents.cs

@@ -16,6 +16,10 @@ namespace ProjectM.Simulation
     [Serializable]
     public struct CharacterComponent : IComponentData
     {
+        /// <summary>The CC's default grounded-movement smoothing sharpness — the single source for GetDefault, the
+        /// authoring default, DashSystem's base, and the death-state reset.</summary>
+        public const float DefaultGroundedSharpness = 15f;
+
         /// <summary>How quickly RelativeVelocity is lerped toward the target velocity on the ground.</summary>
         public float GroundedMovementSharpness;
 
@@ -26,7 +30,7 @@ namespace ProjectM.Simulation
         {
             return new CharacterComponent
             {
-                GroundedMovementSharpness = 15f,
+                GroundedMovementSharpness = DefaultGroundedSharpness,
                 StepAndSlopeHandling = BasicStepAndSlopeHandlingParameters.GetDefault(),
             };
         }

Assets/_Project/Scripts/Simulation/Player/DashSystem.cs

@@ -32,7 +32,7 @@ namespace ProjectM.Simulation
         // Feel knobs are LIVE-tunable via the TuningConfig singleton (MC-0): OnUpdate reads it each tick and falls
         // back to TuningConfig.Defaults() when absent (release builds / EditMode), so behaviour is identical to the
         // old baked consts. DefaultSharpness (the restore target) + SimTickRate stay compile-time (not tuned).
-        const float DefaultSharpness = 15f;  // CharacterComponent.GetDefault() base
+        const float DefaultSharpness = CharacterComponent.DefaultGroundedSharpness;  // CharacterComponent.GetDefault() base
         const float SimTickRate = 60f;
 
         [BurstCompile]

Assets/_Project/Scripts/Simulation/Player/PlayerDeathStateSystem.cs

@@ -48,7 +48,7 @@ namespace ProjectM.Simulation
                     if (SystemAPI.HasComponent<CharacterComponent>(entity))
                     {
                         var cc = SystemAPI.GetComponent<CharacterComponent>(entity);
-                        cc.GroundedMovementSharpness = 15f;
+                        cc.GroundedMovementSharpness = CharacterComponent.DefaultGroundedSharpness;
                         SystemAPI.SetComponent(entity, cc);
                     }
                 }

Assets/_Project/Scripts/Simulation/Tuning.cs

@@ -51,6 +51,11 @@ namespace ProjectM.Simulation
         /// under interp lag (>= ~250ms reaction + interp buffer; Slice 1 readability). 0/1 = near-instant (legacy).</summary>
         public const int AttackWindupTicks = 22;
 
+        /// <summary>Charger lunge telegraph windup (ticks). Single source shared by EnemyBaker (the baked client
+        /// danger-ramp denominator) and TuningConfig.Defaults, mirroring the Grunt AttackWindupTicks pattern so the
+        /// baked telegraph can't drift from the server windup.</summary>
+        public const int ChargerWindupTicks = 30;
+
         // ---- Production / automation (M7: Harvester/Conveyor/Fabricator) ----
 
         /// <summary>Max production cycles a single machine awards in one process (bounds within-session

Assets/_Project/Scripts/Simulation/World/RegionComponents.cs

@@ -42,6 +42,10 @@ namespace ProjectM.Simulation
         /// transiently-coexisting arenas can never interact in the shared PhysicsWorld.</summary>
         public const float RoomStrideX = 500f;
 
+        /// <summary>Region-flip boundary X (half the expedition offset): a player/camera past this reads as the
+        /// +1000 expedition region. Single source for the HUD / onboarding / atmosphere region checks (DR-013).</summary>
+        public const float RegionBoundaryX = ExpeditionOffsetX * 0.5f;
+
         /// <summary>
         /// World-space origin of expedition room sub-slot <paramref name="subSlot"/> (0 or 1 — the run FSM
         /// ping-pongs consecutive rooms between two offsets so the next room spawns at the idle slot while the