research(track-a): determine server-delivered worldmap extent

[blakinio]

Objective

Resolve the server-delivered-map-extent acceptance added to OTCLIENT-TIBIA-RE-WORLDMAP-MUTATION-DESIGN v1.1.0 without repeating completed mutation-design/runtime predecessors.

Static result

SERVER_MAP_DELIVERY_MODEL=UNKNOWN
SERVER_LARGER_RECTANGLE_SUPPORTED=UNKNOWN
SERVER_FULL_FLOOR_DELIVERY_SUPPORTED=UNKNOWN
SERVER_MULTI_FLOOR_BULK_DELIVERY_SUPPORTED=UNKNOWN
SERVER_WHOLE_MAP_DELIVERY_SUPPORTED=UNKNOWN
MAX_SERVER_DELIVERABLE_EXTENT=UNKNOWN

These are direct evidence-bounded results, not claims of impossibility. Exact-client evidence proves normal gameplay map payload families are server->client, while the complete 160-name client->server generated-message census contains no separately named aware/range/extent/viewport/fullmap/fielddata/width/height message. Exact generic outbound field semantics were not recovered, so the control model remains UNKNOWN.

Evidence

• exact client: 15.32.df7b29, size 51965216, SHA-256 e6c244bd39fe2e0632f6f000efd3147164696efa8e901718668e0442325ff7fe;
• complete message census: run 32022209943, job 95364071999, artifact 9285763750 — 349 generated names, 160 client->server, 189 server->client;
• targeted descriptor boundary: run 32022973229, job 95366330613, artifact 9286040543 — exact Coordinate{x,y,z:uint32} recovered; target Extent/generic outbound/map-delivery descriptors not recovered;
• retained normal strip observation bounded to baseline consistency only;
• independent closeout audit: MATERIAL_FINDINGS=0, one stale-checkpoint finding resolved before audit.

Durable report: docs/agents/reports/OTCLIENT-20260817-worldmap-server-delivery-extent.md.

Task: docs/agents/tasks/active/OTC-20260817-track-a-worldmap-server-delivery-extent.md.

Runtime discriminator

The report defines one separately authorized causal physical experiment comparing the exact baseline against the already-designed first [19,14] mutation while measuring authoritative inbound map envelope before Storage, outbound generic-message serialization, and Storage/render/picker separately. This PR does not execute that experiment.

Safety / cleanup

EXECUTION_CLASS=github_hosted, RUNTIME_ACCESS=none. No official-client byte mutation, no login/runtime/Synology fallback, no owner-funded Codex/OpenAI API/paid AI quota, no third-party OTClient behavior promoted as official-server proof, and no raw proprietary client bytes committed. The temporary branch-only evidence workflow was removed before closeout.

Base: main@f99ec371bafd0b9dbccb8fd6f4c8a3137e7d963b.

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