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feat(A.5 T2): TwoTierDiff record + LandblockStreamJob.Load.Kind

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Adds TwoTierDiff — the five-list output of StreamingRegion.RecenterTo
(ToLoadFar/Near, ToPromote, ToDemote, ToUnload) per spec §4.2. Used by
T3–T6 (StreamingRegion) and T13 (StreamingController).

Extends LandblockStreamJob.Load with a LandblockStreamJobKind parameter
so the streaming worker can route far vs near vs promote jobs differently
(spec §4.3). Patches the one call site in LandblockStreamer.EnqueueLoad
with LoadNear as a placeholder that preserves today's full-load semantics
until T11 activates the worker thread and T16 routes by tier.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-05-09 22:20:48 +02:00
parent d67d16fcfc
commit 90a2027d14
3 changed files with 17 additions and 2 deletions
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2
src/AcDream.App/Streaming/LandblockStreamer.cs
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@ -88,7 +88,7 @@ public sealed class LandblockStreamer : IDisposable
// Synchronous mode: invoke the load delegate inline. The result lands
// in the outbox and DrainCompletions picks it up later in the same
// (or next) frame.
HandleJob(new LandblockStreamJob.Load(landblockId));
HandleJob(new LandblockStreamJob.Load(landblockId, LandblockStreamJobKind.LoadNear));
}
public void EnqueueUnload(uint landblockId)