LANTERN purge B3+B5: delete the cycle/core/win-lose spine + onboarding; save epoch v7

Deletes CyclePhaseSystem, GoalReachedSystem, CoreDamage/CoreRestore, ThreatDirector,
CoreIntegrity/GoalProgress/RunPhase/RunOutcome/ThreatState components,
CoreVisualFeedbackSystem, and the whole Client/Onboarding slice (+6 test files).

Keepers reworked: RunDirectorSystem (UpdateBefore attr + launch guard + goal/threat
bank removed; sole SaveRequest raiser now), CycleDirectorSpawnSystem (ledger/meta
host only), WaveSystem UNGATED (waves run wherever a WaveDirector is baked),
EnemyAISystem core-fallback stripped, AmbientAudioSystem reworked (bed + run cues;
no CycleState gate), MusicSystem RunInfo-only, HudSystem big trim (goal meter, core
bar, siege banner, terminal banner, outcome flash, onboarding hook all gone),
MetaShop/ClassPrep/AimReticle siege gates dropped, DebugOverlay/ops re-meant
(SpawnWave=force next wave, EndSiege=quiet arena; SetCalm/AdvanceGoal/SetHeat
retired, bytes reserved), TuningConfig Core knobs retired (ids 20-23 reserved),
StorageMath.DrainFraction deleted, HowToPlay copy rewritten.

Save epoch v7 (fresh epoch, operator-approved): SaveData drops goal/core/outcome +
conveyor/machine-IO fields; MinLoadableVersion=7; PendingSave/PendingStructure
trimmed; RollTerminalCampaignForward deleted; SaveStructureScan signature slimmed.

390 tests green; Play world-creation clean (player + waves live, no exceptions).

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

Assets/_Project/Scripts/Simulation/Persistence/SaveApply.cs

@@ -16,6 +16,9 @@ namespace ProjectM.Simulation
                 dest.Add(new StorageEntry { ItemId = src[i].ItemId, Count = src[i].Count });
         }
 
+        /// <summary>EB-1: map a serialized <see cref="StructureSave"/> to the staged <see cref="PendingStructure"/>
+        /// (the menu->ServerWorld copy in WorldLauncher). Pure so the field-for-field copy — including the
+        /// easy-to-miss HP — is unit-tested; an omitted field here silently restores every structure at full HP.</summary>
         /// <summary>EB-1: map a serialized <see cref="StructureSave"/> to the staged <see cref="PendingStructure"/>
         /// (the menu->ServerWorld copy in WorldLauncher). Pure so the field-for-field copy — including the
         /// easy-to-miss HP — is unit-tested; an omitted field here silently restores every structure at full HP.</summary>
@@ -24,10 +27,6 @@ namespace ProjectM.Simulation
             Type = s.Type,
             CellX = s.CellX,
             CellZ = s.CellZ,
-            Direction = s.Direction,
-            RemainingTicks = s.RemainingTicks,
-            ConveyorResId = s.ConveyorResId,
-            ConveyorCount = s.ConveyorCount,
             HP = s.HP,
         };
     }