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feat(streaming): shadow-publish flat collision assets

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Carry one immutable prepared collision closure with each accepted near-tier generation and install graph plus flat views through the same retained publication receipt. Apply the same strict package-only rule to live entities, add exact sampled graph-authoritative comparison artifacts and lifecycle counters, and prove cancellation, demotion, rehydrate, revisit, teardown, reconnect, and the nine-stop route with 14,064 zero-mismatch samples.

Co-authored-by: OpenAI Codex <codex@openai.com>
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Erik 2026-07-25 16:38:54 +02:00
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docs/plans/2026-07-25-modern-runtime-slice-i.md
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# Modern runtime Slice I — flat collision assets and zero-allocation physics
**Status:** I0-I4 COMPLETE - retail oracle, zero-allocation transition
**Status:** I0-I5 COMPLETE - retail oracle, zero-allocation transition
scratch, deterministic immutable collision records, complete prepared
package, and exact flat-traversal differential gate fixed; I5 active
package, exact flat traversal, dual publication, and connected shadow gate;
I6 active
**Parent:** `2026-07-24-modern-runtime-architecture.md`, Slice I
**Purpose:** remove parsed DAT object graphs and steady collision allocations
without changing one retail collision decision, float, comparison, or traversal
@ -241,6 +242,17 @@ until I5/I6. Release build and 8,384 solution tests / 5 skips pass. Evidence:
Gate: zero shadow mismatch and no retained collision owner after landblock or
session teardown.
**Complete 2026-07-25.** Near-tier builds carry one immutable prepared
collision closure; streamed and live objects publish graph and flat assets
strictly, with no graph-only fallback. Cancellation, publication, demotion,
rehydration, revisit, adjacent-landblock isolation, removal, and session
teardown gates pass. The complete Release solution passes 8,396 tests / 5
skips. The connected lifecycle/reconnect and nine-stop routes sampled 14,064
queries with exact state/float-bit equality, zero mismatch, zero flat fault,
zero mismatch artifact, equal graph/flat cell residency at every stable
checkpoint, and graceful exits. Evidence:
[`../research/2026-07-25-slice-i5-dual-collision-shadow.md`](../research/2026-07-25-slice-i5-dual-collision-shadow.md).
### I6 — production cutover and graph removal
1. Flip canonical `PhysicsDataCache` records and every `BSPQuery` production