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/SaveData.cs

@@ -21,67 +21,38 @@ namespace ProjectM.Simulation
         public byte Tier;
     }
 
-    /// <summary>
-    /// One serialized player-built structure (M7). Flat scalars (JsonUtility has no int2). The production
-    /// cooldown is stored as REMAINING ticks (epoch-independent) so it survives the server-tick origin reset on a
-    /// fresh session; the in-flight conveyor item (if any) rides here, while variable-length machine I/O buffers
-    /// live in the flat <see cref="SaveData.StructureIo"/> table keyed by index.
-    /// </summary>
+    /// <summary>One serialized player-built structure. Flat scalars (JsonUtility has no int2).</summary>
     [Serializable]
     public struct StructureSave
     {
         public byte Type;
         public int CellX;
         public int CellZ;
-        public byte Direction;       // conveyor facing (0 for non-conveyors)
-        public uint RemainingTicks;  // production/cooldown ticks left at save time
-        public byte ConveyorResId;   // in-flight conveyor item resource (0 = none)
-        public int ConveyorCount;
-        public float HP;             // EB-1: hit points at save time (0 from a pre-v3 save -> restored to baked Max)
+        public float HP; // EB-1: hit points at save time (0 -> restored to baked Max)
     }
 
     /// <summary>
-    /// One serialized machine I/O buffer row, joined to <see cref="SaveData.Structures"/> by
-    /// <see cref="StructureIndex"/>. A flat top-level array (JsonUtility can't nest arrays-of-arrays); Slot 0 =
-    /// MachineInput, Slot 1 = MachineOutput.
-    /// </summary>
-    [Serializable]
-    public struct StructureIoRow
-    {
-        public int StructureIndex;
-        public byte Slot;
-        public byte ResourceId;
-        public int Count;
-    }
-
-    /// <summary>
-    /// Versioned, host-authoritative save slice (the FOUNDATION): the long-arc goal charge/target + the shared
-    /// resource ledger. JsonUtility-friendly — a class with flat fields and an array FIELD (never a root array).
-    /// The schema is intentionally ADDITIVE: future fields (placed structures, threat, storage) append without
-    /// breaking old saves, gated by <see cref="Version"/> migration.
+    /// Versioned, host-authoritative save slice: the shared resource ledger + player-built structures + the
+    /// permanent meta. JsonUtility-friendly — a class with flat fields and an array FIELD (never a root array).
+    /// The schema is ADDITIVE going forward, gated by <see cref="Version"/> migration.
     /// </summary>
     [Serializable]
     public class SaveData
     {
-        public const int CurrentVersion = 6; // v6: permanent META (per-class upgrade tiers + run counters); v5 added RunOutcome; v4 added CoreCurrent
+        public const int CurrentVersion = 7; // v7: LANTERN fresh epoch — goal/core/outcome + conveyor/machine-I/O fields dropped
 
-        /// <summary>Oldest save schema the loader accepts (additive); a v2 save loads with structures at full HP.</summary>
-        public const int MinLoadableVersion = 2;
+        /// <summary>Oldest save schema the loader accepts. v7 is a FRESH EPOCH (operator-approved): older saves are ignored.</summary>
+        public const int MinLoadableVersion = 7;
 
         public int Version = CurrentVersion;
-        public int GoalCharge;
-        public int GoalTarget;
-        public int CoreCurrent; // END-1: Engine Core integrity at save time (0 from a pre-v4 save -> restored to baked Max)
-        public int RunOutcome;  // END-2: 0=InProgress (also any pre-v5 save) / 1=Victory / 2=Loss -> a finished run loads finished
 
-        // v6 — permanent meta-progression (0/empty-defaults on any v<=5 save):
+        // Permanent meta-progression:
         public int RunsCompleted;     // boss-cleared runs (the HUD counter + the HostSalt fold at restore)
         public int MaxDepthReached;   // deepest room actually CLEARED across all runs (honest depth, never planned)
         public MetaUpgradeSave[] MetaUpgrades = Array.Empty<MetaUpgradeSave>(); // sparse per-class tiers
 
         public LedgerRow[] Ledger = Array.Empty<LedgerRow>();
         public StructureSave[] Structures = Array.Empty<StructureSave>();
-        public StructureIoRow[] StructureIo = Array.Empty<StructureIoRow>();
         public long SavedAtMs;
     }
 }