Add public curator notes and U-shaped hall wall hang.

Paintings get editable curator notes with brass plates in the 3D hall, and visit order now uses the far/end wall between left and right.

Co-authored-by: Cursor <cursoragent@cursor.com>

Documentation/basics.md

@@ -8,8 +8,8 @@ The app is organised as a **drill-down hierarchy**:
 
 1. **Timeline** — historical eras (Ancient → Contemporary) with definite or fuzzy date boundaries.
 2. **Movement flow** — art movements as curved SVG streams on the same year axis; documented predecessor→successor branches; portrait thumbnails placed along each stream.
-3. **3D gallery** — one personal hall per artist, a **movement gallery** (click a movement name), or a **guided tour** hall (timeline → **Tours**): period-themed or tour wings of up to ~55 works, side-wall hang, visit order left→right.
-4. **Painting detail** — full work in the centre, *Influenced By* on the left, *Influenced* on the right (paintings, artists, or movements), optional **art-history notes** with image markers, prev/next catalog browsing, optional fullscreen, link to artist biography.
+3. **3D gallery** — one personal hall per artist, a **movement gallery** (click a movement name), or a **guided tour** hall (timeline → **Tours**): period-themed or tour wings of up to ~55 works, U-shaped hang (left → end wall → right).
+4. **Painting detail** — full work in the centre, *Influenced By* on the left, *Influenced* on the right (paintings, artists, or movements), optional **curator notes** and **art-history notes** with image markers, prev/next catalog browsing, optional fullscreen, link to artist biography.
 5. **Artist biography** — portrait, lifespan, movement, and Wikipedia-sourced intro text (`bio_short` / `bio_full`). With debug mode on, the same image-audit panel as painting detail (portrait search, **Checked** / **Fix it** / **More** / **Clear** / **Upload**).
 
 **Catalog search** — on the timeline home page, the header search bar (`CatalogSearchBar.tsx`) finds artists, paintings, and movements by name and metadata (year, movement, Wikipedia title). Type at least **2 characters** (300 ms debounce); results group into **Artists**, **Movements**, and **Paintings** with thumbnails. Keyboard: `↑`/`↓` to move, `Enter` to open, `Escape` to close. Choosing a result opens the artist gallery, movement gallery, or painting detail. Paintings opened from search show **← Back to Timeline** and return to the home timeline (full year range), not the previous view.
@@ -283,7 +283,7 @@ Only **mousedown** on portraits and movement labels stops propagation (so drag-t
 
 The 3D scene supports three modes in `VirtualGallery.tsx`: **artist halls** (personal catalog), **movement galleries** (full movement collection, chronological), and **guided tours** (curator-ordered stops — [tours.md](tours.md)).
 
-**Shared wall hang (all modes):** visit order fills the **left wall first**, then the **right**. The **first** work hangs near the entrance on the left (immediately left of the opening view); the **last** hangs near the entrance on the right. Artist halls use chronological order; movement wings use chronological order within each wing; tours use stop order.
+**Shared wall hang (all modes):** visit order is a **U-shape** — **left wall**, then the **far/end wall** ahead when entering, then the **right wall**. The **first** work hangs near the entrance on the left (immediately left of the opening view); the **last** hangs near the entrance on the right. With fewer than three works, only left/right are used. Artist halls use chronological order; movement wings use chronological order within each wing; tours use stop order.
 
 ### Artist halls
 
@@ -293,12 +293,13 @@ Each artist has **exactly one hall**. The hall is a rectangular room sized to fi
 |------|----------------|
 | One hall per artist | `VirtualGallery.tsx` builds a single room from that artist’s paintings |
 | Catalog depth | Most artists target **≥ 6** notable works via `npm run dev:expand-catalog` and `famous-paintings-data.js`; some masters have larger museum dumps |
-| Paintings on walls | Works hang on the **left and right** walls in **one row per wall**; room **depth grows** when the catalog is large (back wall is for the exit only) |
-| Wall order | Chronological visit order: first half on the **left** (entrance → back), second half on the **right** (back → entrance); first work left of the opening view, last on the right |
+| Paintings on walls | Works hang on **left**, **far/end**, and **right** walls in **one row per wall**; room **depth** and **width** grow with the catalog |
+| Wall order | Chronological U-path: first third **left** (entrance → end), middle third **end wall**, last third **right** (end → entrance) |
 | Floor | Herringbone **parquet** procedural texture (`parquetFloorTexture.ts`) |
 | Wall tint | Gallery walls blend the artist’s **movement colour** into cream plaster tones |
 | Frame finish | **Unchecked** works: black moulding; **Reviewed** (`checkup_checked`): bright gold moulding at **double width** |
 | Influence lamps | A golden picture light appears **above frames** whose work has any influence-graph edge (`has_influence_links` from the API) |
+| Curator-note plates | A small brass plate hangs **beneath frames** that have non-empty `curator_notes` |
 | Eye-level viewing | Frame centres sit at **eye height (~1.65 m)**; the camera stays **level with the floor** (no pitch up/down) |
 | Open centre | Floor and ceiling only — no columns, pedestals, or other centre objects |
 | Museum exit | Front-wall **double doors** with transom, brass hardware, sconces, marble threshold, and warm vestibule glow |
@@ -329,8 +330,8 @@ Enter from the home page by clicking a **movement name** on the movement flow (`
 |------|----------------|
 | One gallery per movement | All paintings by artists in that movement, sorted chronologically |
 | Wings | Catalog split into wings of up to **55 works** (`movementHallLayout.ts`); large movements (e.g. Baroque) use multiple wings |
-| Paintings on walls | **Left and right walls only** — back wall reserved for exit, front for passage to the next wing |
-| Wall order | Same shared hang as artist halls: first half left (entrance → back), second half right (back → entrance) |
+| Paintings on walls | **Left, end, and right** — end-wall works sit on the panels beside the exit doors; front wall remains passage / solid |
+| Wall order | Same U-shaped hang as artist halls (left → end → right) |
 | Frame captions | **Year · artist** label below each frame |
 | Period interior | Each of the 26 seeded movements maps to a unique style in `movement-interior-styles.ts` (Italian palazzo, Baroque palace, NYC loft, white cube, etc.) |
 | Wall materials | Hi-res **procedural textures** with normal maps (`galleryProceduralTextures.ts`): real-world stone, marble, wood panelling, brick, velvet, stucco — plus **single-colour painted walls** (`painted-lime`, `painted-oil-matte`, `painted-oil-satin`, `painted-emulsion`, `painted-flat`) tinted per movement for Renaissance salons through modern white cubes |
@@ -362,7 +363,7 @@ Enter from the home page **Tours** popup (`GET /api/tours/:id`). Layout reuses t
 |------|----------------|
 | Visit order | Curator `sort_order` on `tour_stops` (not chronological) |
 | Wings | Same ~55-per-wing split as movements; order preserved across wings |
-| Wall hang | Same left-then-right rule as other halls |
+| Wall hang | Same U-shaped hang as other halls (left → end → right) |
 | Detail | Tour stop text panel; ‹ › walks tour stops |
 | Exit | Wing navigator / **Exit to Timeline** (no influence picker) |
 
@@ -382,6 +383,7 @@ Opened from the 3D hall (artist, movement, or tour wing — click a frame) or fr
 |-------|----------------|
 | **Detail** | Centre image, *Influenced By* (left) and *Influenced* (right) — painting thumbnails (full work visible, letterboxed), artist portraits, or movement swatches — position in catalog (e.g. `3 of 12`) |
 | **Tour notes** | When opened from a guided tour: stop text panel under the image (English body from `tour_stops`) |
+| **Curator notes** | Public editorial text on the painting (`paintings.curator_notes`); visitors see it when non-empty; curators edit inline on the detail page |
 | **Art history notes** | Numbered markers on the image (when positioned) plus a note list below — short citations from Gombrich, museum catalogs, Wikipedia, etc. (`painting_annotations` table) |
 | **Fullscreen** | Click the centre image; `Escape` or click anywhere to return to detail only |