settled-reach/docs/assets/briefs/deferred.md

title, description, type, status, ticket, decision_refs, author, created, updated

title	description	type	status	ticket	decision_refs	author	created	updated
Deferred Asset Classes	Formal deferral note — lamp posts, barns, TVs, billboards (T-1051), and cars (Q-067) — not briefed this batch	design	active	T-1051	D-166 D-235	Araminta	2026-07-25	2026-07-25

Deferred Asset Classes

This is the formal deferral record for five asset classes named in the T-750 epic description that do not get a one-page brief this batch: lamp posts, TVs, billboards, barns (T-1051's four classes) and cars (Q-067). This note is what lets T-1051 close as delivered-by-deferral (its own acceptance criterion — "author briefs, or record formal deferral" — is satisfied by this file) and records the rationale so a future re-scope pass doesn't have to re-derive it.

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The four T-1051 classes: lamp posts, TVs, billboards, barns

Rationale. Phase 4's cascade deliverable is "deterministic walkable-world data + per-layer Atlas maps + asset catalog" (CLAUDE.md cascade table). Outside-in generation (D-166) needs building exterior templates — the D-235 wall/roof/facade/street axes — to make districts/blocks walkable and Atlas-legible. None of these four classes are a wall/roof/facade/street axis token:

• Lamp posts (street furniture) and TVs/billboards (signage/screens) are set-dressing objects that populate an already-walkable exterior or interior — they read as Phase 6 "detail coloring / room-level population" (cascade table), or at best late-Phase-4 polish once exteriors exist to place them against.
• Barns are a rural building type, not a material/form/rhythm/surface axis token — D-235's vocabulary describes what a wall/roof/facade/street looks like, not what kind of building a set of walls forms. A barn's walls and roof would draw from the same rural-walls.md brief's tags (timber_wall, rammed_earth_wall) plus a roof tag; there is no separate "barn" asset class to brief independent of that.

No partial work is lost by deferring. T-1049's own 2026-06-12 audit matrix confirms zero repo hits for any of the four beyond the T-750 epic description text — no ticket, no brief, no produced asset, no style-guide mention. There is nothing to protect or unwind by waiting.

Disposition. Formal deferral, not a story. No brief is authored for any of the four this batch.

Note on axis completeness. This register's exterior-texture examples in station-walls.md/rural-walls.md cite the D-235 wall axis only — that is deliberate scoping to this batch's two briefed classes, not a claim that roof/facade/street are also deferred. RoofForm (7 tags), FacadeRhythm (8 tags), and StreetSurface (7 tags) are the other three D-235 axes and are not unbriefed set-dressing in the sense the four classes above are — they are building-exterior surfaces that ride the same naming/generation convention the wall briefs establish (<object_tag>_<map_type>.png per conventions.md §3, palette.md §3.2–§3.4's register rows already exist for all three). They are a natural follow-on brief/story within the building-exterior asset-class family once station-walls/rural-walls prove the pattern out — not named as their own class in T-1049's per-class list, and not deferred for the exterior-not-walkable-yet reason the four classes above are. No new brief is authored for them this batch; the accounting above is complete once this note is read alongside the wall briefs.

Cars (Q-067)

Rationale, same shape, one added layer. Cars are also set-dressing/ transport infrastructure that presupposes walkable exteriors — same Phase-4- vs-later argument as the four above. Cars additionally carry a genuinely open design question: Q-067 ("Vehicle physics for in-world transport") has not decided whether the game needs driveable vehicles, NPC-only traffic, or neither, nor whether vehicle movement is client-side physics or server-authoritative. A car asset brief would have to assume an answer to a question that is explicitly still open — Q-067's own audit note (2026-06-12, S-47) already flagged this: "Scope for v0.2: probably not" (and v0.2 is dropped per CLAUDE.md), recommending the phase question be answered before any car brief is written.

Distinction from the T-1051 four, in degree not kind. The four above need no open question resolved — their deferral is a pure scope/sequencing call (exteriors first). Cars need Q-067 resolved in addition to that same sequencing call. Only vehicle artifact today: spikes/3dpipeline/models/ props/vw_beetle.glb (a spike binary, untracked per D-241 — not production prior art).

Disposition. Formal deferral. Blocked on Q-067 resolution in addition to Phase-4 exterior-generation completion.

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Revisit trigger

Revisit all five classes when Phase-4 exterior generation is complete — i.e. when the tile/chunk/block cascade is producing walkable districts/ blocks with building exteriors drawn from the D-235 axes (the point at which set-dressing has something real to populate). For cars specifically, revisit is additionally gated on Q-067 resolving to a driveable-vehicles-in-scope answer; if Q-067 resolves "no vehicles" or "NPC-traffic-only, no player asset," the car brief may never be needed in the form this note anticipates.

Precedent

This deferral treatment mirrors the Q-067 precedent already established in T-1049's refinement history: file a scope note now, do not write a brief against an undecided mechanic or an unwalkable world, and let the phase cascade (D-166) — not a milestone label — be the thing that reopens the question when its gating condition is met.

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Cross-References

• T-1051 — the ticket this note satisfies ("author briefs, or record formal deferral")
• T-1049 — parent refinement ticket; "Lead ratification" note ratifies this deferral disposition
• Q-067 — open question, vehicle physics/mechanic scope
• D-166 — outside-in generation cascade (geo → economic/exterior → building templates → door contracts → Phase-6 interiors)
• D-235 — building-exterior visual grammar (wall/roof/facade/street axes; barns/lamp-posts/TVs/billboards are not axis tokens)
• docs/assets/briefs/rural-walls.md — barns' actual wall/roof material draws from this brief's tags, when barns are eventually built