plan: give realistic buildings their own minor milestone (0.9.0)

The facade work started as a patch (0.1.4) and the 0.1.6 retail pass showed what
that costs: a patch has no release gate of its own, so a first pass that does not
yet read as the building can sit inside a done patch series. Realism is also the
leading quality goal, which a patch cannot carry.

New 0.9.0 - Realistic buildings, before the feature freeze: facade system with more
than one order, a profile library, storefront types, signage as decals, per-building
photo-matched models, a measured material library with a texel-density rule, and
LODs plus collision proxies. Former 0.9.0 freeze/beta/audit becomes 0.10.0 with
patches 0.10.1-0.10.3; 1.0.0 moves to weeks 39-44.

Recorded as ADR-8 (append-only) with a measurable gate BR-1..BR-5 in the quality
requirements, mirrored into the combined architecture.md. The 0.1.6 item now says
which of its gaps move to 0.9.0 and why more geometry cannot close them.

TODO.md

@@ -15,7 +15,7 @@ Suggested blender skills: **references** (reference-image-match), **archviz**, *
 
 ### Patch tasks - active - session-5598ce7e-27e3-4c64-bb49-c04a4a31ee58 (branch `facade-retail-0.1.6`)
 
-- [A] **Model 6800 Lee Drug and 6806–6820 from their own reference.** First pass 2026-11-09 on branch `facade-retail-0.1.6`: `Tools/retail_frontage_build.py` builds both façades from the one photograph (`Art/reference/retail-neighbours/`, Gb321 CC BY-SA 4.0) with the analysis in `Art/blender/retail/ref-analysis.md`; `Tools/ue_import_retail_detail.py` imports them and the demo builder stages them as `RetailTrim_*`. The generic façade kit is now skipped on these two, so their walls carry one façade language instead of two. **Open on this item:** the parapet reads as a blank band, the mural row and lettering band do not resolve at review distance, the corner tower is a plain cylinder, and the review camera crops the east end — all listed in `Screenshots/README.md`.
+- [A] **Model 6800 Lee Drug and 6806–6820 from their own reference.** First pass 2026-11-09 on branch `facade-retail-0.1.6`: `Tools/retail_frontage_build.py` builds both façades from the one photograph (`Art/reference/retail-neighbours/`, Gb321 CC BY-SA 4.0) with the analysis in `Art/blender/retail/ref-analysis.md`; `Tools/ue_import_retail_detail.py` imports them and the demo builder stages them as `RetailTrim_*`. The generic façade kit is now skipped on these two, so their walls carry one façade language instead of two. **Open on this item:** the parapet reads as a blank band, the mural row and lettering band do not resolve at review distance, the corner tower is a plain cylinder, and the review camera crops the east end — all listed in `Screenshots/README.md`. **Not fixable by more geometry:** a second pass moved the plates 0.10–0.20 m off the wall and they still do not read at 40 m; wall lettering and the portrait panels need the decal/texture route scoped in `0.9.0 — Realistic buildings`. This patch stops at the trim that does read — cornice, fascia, storefronts, window bars, parapet tiers.
 - [D] **Model 6822 Budget.** Deferred: no photograph exists for it (Commons has nothing usable) and the single-storey 6.0 × 5.5 m volume cannot be read from the neighbour shot. Needs photography before it can be modelled honestly; do not substitute the El Capitan Theatre's set or the 6806–6820 shot.
 - [ ] Review every façade change with `Tools/render_screenshots.sh --verify` before tagging.
 - [ ] Tag `v0.1.6` and write `CHANGELOG.md` entry; then remove this section.
@@ -286,7 +286,48 @@ Suggested blender skills: **references** (reference-image-match), **archviz**, *
 - [ ] Fix compatibility issues from the hardware testing matrix.
 - [ ] Tag `v0.8.3` and write `CHANGELOG.md` entry; then remove this section.
 
-## 0.9.0 — Feature freeze, public beta, license and build audit (weeks 31–34)
+## 0.9.0 — Realistic buildings (weeks 31–34)
+
+Suggested blender skills: **archviz** (real-world scale, façade composition, elevation read), **references** (reference-image-match and visual-match checklists — every building is judged against its own photograph), **procedural-modeling** + **geometry-nodes** (the façades system: bay module, cornice and coping profiles, storefront types as reusable node groups), **materials** (measured albedo and roughness per surface type), **texture-workflow** (baked AO/curvature/normal, decals for painted lettering and signs), **uv-workflow** (texel density and modular UVs), **lod-pipeline** (LOD chain per building), **collision-proxy** (UCX proxies so detail geometry is not the collider), **lookdev** (screenshot comparison loop), **camera-cinematography** (reproducing each building's reference angle), **asset-optimization** + **unreal-export** (pre-export validation, `ue_metric_v1`), **qa-review** (the gate before every review shot).
+
+### Façade system
+
+- [ ] **Extend the module kit beyond one order.** Art Deco, neoclassical and streamline-moderne variants on the shared 4.96 m bay: alternate window proportions, spandrel and transom bands, and the way each order terminates at the roof.
+- [ ] **Build a profile library** for cornices, copings, string courses, sills and storefront surrounds, so a building is assembled from named profiles rather than ad-hoc boxes.
+- [ ] **Storefront types**: recessed entry, bulkhead and kickplate, mullion spacing, transom, awning/canopy brackets, and grille/shutter variants.
+- [ ] **Signage and lettering as decals.** Painted wall lettering, blade signs and fascia panels become texture and decal work with a documented projection; `0.1.6` proved that lettering built as geometry plates cannot resolve at review distance.
+- [ ] Document the system in `Art/blender/README.md` and the arc42 building block view.
+
+### Per-building models
+
+Each building needs its own reference set; where none exists the blockout stays and the item says so.
+
+- [ ] Hero façade (6840): raise to this pass's detail level — capitals and fluting, window rhythm behind the colonnade, parapet motto band and medallions.
+- [ ] El Capitan Theatre (6838): marquee, blade sign, entrance and the theatre's own elevation from its 18-frame set.
+- [ ] 6800 Lee Drug and 6806–6820: second pass on the `0.1.6` trim — parapet profile, mural panels, and the lettering decal.
+- [ ] 6822 Budget, 6806–6820 and 6800 photography gap: acquire references before modelling anything not yet photographed, and record the sources checked in `Geo/`.
+- [ ] 6902, 6922 and the remaining south frontage.
+- [ ] North side: TCL Chinese Theatre and Madame Tussaud's façades from their reference sets.
+- [ ] Reconcile every modelled height against `Geo/tools/block_height_report.py` and record the source per building.
+
+### Materials, UVs and performance
+
+- [ ] **Measured material library**: stucco, painted render, ashlar, brick, terrazzo, glazing, bronze and steel trim, with albedo and roughness taken from the photographs rather than guessed; one Unreal material instance per surface type.
+- [ ] **Texel-density rule** per building class, applied through modular UVs; lightmap UVs where required.
+- [ ] **LOD chain and collision proxies** per building: UCX proxies for blocking volume, detail geometry non-colliding.
+- [ ] Re-validate the 60 FPS floor at 1440p once the detail lands, and record the cost of the pass.
+
+### Release checks
+
+- [ ] Every building with a photograph has a review shot measured against it, with silhouette and proportion deltas recorded in `Screenshots/README.md`.
+- [ ] No building carries an unverified façade; blockouts without references are listed as such in `TODO.md`.
+- [ ] Every building has a collision proxy and at least one LOD.
+- [ ] No surface left on a placeholder material.
+- [ ] `THIRD_PARTY_NOTICES.md` covers every photographic reference used in this pass.
+- [ ] Performance target still met at 1440p.
+- [ ] Tag `v0.9.0` and write `CHANGELOG.md` entry; then remove this section.
+
+## 0.10.0 — Feature freeze, public beta, license and build audit (weeks 35–38)
 
 ### Freeze and audit
 
@@ -298,29 +339,29 @@ Suggested blender skills: **references** (reference-image-match), **archviz**, *
 
 ### Release checks
 
-- [ ] Beta feedback triaged; blockers logged for `0.9.x`.
-- [ ] Tag `v0.9.0` and write `CHANGELOG.md` entry; then remove this section.
+- [ ] Beta feedback triaged; blockers logged for `0.10.x`.
+- [ ] Tag `v0.10.0` and write `CHANGELOG.md` entry; then remove this section.
 
-## 0.9.1 — Blocker fixes (patch)
+## 0.10.1 — Blocker fixes (patch)
 
 ### Patch tasks
 
 - [ ] Fix blockers reported during the public beta.
-- [ ] Tag `v0.9.1` and write `CHANGELOG.md` entry; then remove this section.
+- [ ] Tag `v0.10.1` and write `CHANGELOG.md` entry; then remove this section.
 
-## 0.9.2 — Regression fixes (patch)
+## 0.10.2 — Regression fixes (patch)
 
 ### Patch tasks
 
 - [ ] Fix regressions introduced by `0.9.x` fixes.
-- [ ] Tag `v0.9.2` and write `CHANGELOG.md` entry; then remove this section.
+- [ ] Tag `v0.10.2` and write `CHANGELOG.md` entry; then remove this section.
 
-## 0.9.3 — Documentation fixes (patch)
+## 0.10.3 — Documentation fixes (patch)
 
 ### Patch tasks
 
 - [ ] Update all `Docs/` for accuracy before `1.0.0`.
-- [ ] Tag `v0.9.3` and write `CHANGELOG.md` entry; then remove this section.
+- [ ] Tag `v0.10.3` and write `CHANGELOG.md` entry; then remove this section.
 
 ## 1.0.0 — Stable neighborhood-scale walking/driving release (weeks 35–40)