v1.50.4: one model builder for both cards (HP-1503-01)

The full card's _buildModel() was a hand-copied twin of spaceModels(), and
the twin missed the legacy-store fallbacks v1.50.3 gave the shared builder —
the same broken store rendered recovered in the static card and as
viewBox='0 0 0 0' with negative-width rects in the main one. The divergence
of the duplicates IS the bug, so the duplicate is gone: the full card calls
spaceModels() and only swaps the raw plan url back in (its signing flow must
not bake a signed url into a memoized model — 2026-07-27).

New smoke_legacy_geometry runs the audit's exact vector (zero viewport +
negative rect) through both models and both DOM trees and asserts parity:
full-canvas fallback, normalised rectangle, no negative SVG attributes.
Inventory: 140 / 51 / 43 / 65.

docs/CHANGELOG.md

@@ -1,5 +1,18 @@
 # Changelog
 
+## v1.50.4 — 2026-07-29
+
+**From the v1.50.3 review**
+
+- **Both cards build their model with the same code now (HP-1503-01).** The
+  full card carried a hand-copied twin of the shared model builder, and the
+  twin missed the legacy-store fallbacks v1.50.3 added — the same broken
+  store rendered fine in the static card and as a blank `viewBox="0 0 0 0"`
+  in the main one. The duplicate is gone: the full card calls the shared
+  builder and only swaps in the raw plan url its signing flow needs. A new
+  smoke runs the audit's exact legacy vector through both models and both
+  DOM trees and asserts parity.
+
 ## v1.50.3 — 2026-07-29
 
 **From the v1.50.2 review**

docs/CHANGELOG.ru.md

@@ -6,6 +6,19 @@
 > **Правило проекта:** оба файла пополняются в одном коммите с самим
 > изменением — как и остальная документация (см. docs/STATUS.md).
 
+## v1.50.4 — 2026-07-29
+
+**По ревью v1.50.3**
+
+- **Обе карточки строят модель одним кодом (HP-1503-01).** Полная карточка
+  носила рукописную копию общего построителя модели, и копия не получила
+  фолбэки для legacy-store из v1.50.3 — один и тот же битый store в
+  статической карточке рендерился починенным, а в основной — пустым
+  `viewBox="0 0 0 0"`. Дубликат удалён: полная карточка вызывает общий
+  построитель и лишь подменяет сырой url плана, который нужен её подписи.
+  Новый смок прогоняет точный вектор аудита через обе модели и оба
+  DOM-дерева и проверяет паритет.
+
 ## v1.50.3 — 2026-07-29
 
 **По ревью v1.50.2**

docs/STATUS.md

@@ -15,12 +15,12 @@
 
 | Item | State |
 |---|---|
-| Version | **v1.50.3** everywhere (manifest, const.py, package.json, CARD_VERSION); deployed to the home instance |
+| Version | **v1.50.4** everywhere (manifest, const.py, package.json, CARD_VERSION); deployed to the home instance |
 | Workflow | Since 2026-07-22: minor changes go to branch **`dev`** (build + smokes → deploy home → commit → push, NO release); releases are batched on the owner's command (merge dev→main, one tag, one release with a summary changelog, CI checked on dev beforehand) |
 | GitHub | https://github.com/Matysh/houseplan-card — **`main` carries every published release, the latest tag is the current version above**; `dev` is where work lands and is merged into `main` at release time (so `dev` is normally equal to or ahead of `main`, never behind). Push via SSH key `ha_jb` (remote git@github.com:…); API releases via the fine-grained PAT in `~/.git-credentials` (Contents R/W, issued 2026-07-23) |
 | CI | validate.yml (hacs + hassfest + frontend + backend) green; release.yml attaches the bundle on release publish |
 | HACS | Custom repository works. **Inclusion PR: hacs/default#9004** — open, valid, labeled; ~864 older open PRs but merge rate ≈180/mo; realistic ETA 1–3 months (checked 2026-07-24) |
-| Home instance | ha.jbstudio.pro (SSH port 323, key `ha_jb`), deployed **v1.50.3** via direct copy (HACS custom repo also installed) |
+| Home instance | ha.jbstudio.pro (SSH port 323, key `ha_jb`), deployed **v1.50.4** via direct copy (HACS custom repo also installed) |
 | Localization | UI en/ru (src/i18n/*.json), everything user-visible localized incl. kiosk popover |
 | Tests | Four layers: frontend unit (`npm test`, node:test over `test-build/`), pure backend (`pytest tests_backend`, runs anywhere), HA-harness backend (same folder, CI only — needs py3.13 + pytest-homeassistant-custom-component), and browser smokes (`demo/smoke_*.mjs`, headless chromium). **Counts are not written down here** — they went stale within two releases while the version line beside them was kept current, which reads as less coverage than exists (review R5-2). Run `npm run inventory` for the current numbers, or read them off the last CI run |
 | Community | **Telegram chat: https://t.me/ha_houseplan** (created 2026-07-27) — the primary user-facing support channel; GitHub issues stay for bugs/features. Link it from any new release notes and posts |

docs/TESTING.md

@@ -239,6 +239,9 @@ Run the *core flows* (marked ★ below) in each environment at least once per mi
       on the plan after a reload. Same for each tap action and each fill mode
       [auto: backend test_every_display_mode_the_editor_offers_is_accepted and
       neighbours, test_a_marker_showing_its_value_can_be_saved]
+- [ ] Legacy geometry parity (v1.50.4, HP-1503-01): a store with a zero
+      viewport and a negative rect renders identically sane in BOTH cards —
+      full canvas fallback, normalised rectangle [auto: smoke_legacy_geometry]
 - [ ] Sizes are positive (v1.50.3, HP-1502-01): view_box or room w/h of zero
       or below is refused; a store that already holds one opens on the full
       canvas, not a blank screen [auto: test_sizes_are_not_coordinates + unit