config+docs: sun/moon/camera/day blocks, moon map attribution and cache manifest

README.md

@@ -14,7 +14,9 @@ dropped into an iframe or kiosk browser and left running.
   ground: direct beam through a Kasten-Young air mass with Rayleigh, ozone and
   aerosol extinction, diffuse skylight, moonlight, a starlight floor and aerial
   perspective. Sun and moon come from the real positions (SunCalc) for
-  `CONFIG.location`, or from an accelerated 24 h simulation (`CONFIG.day`).
+  `CONFIG.location`; `CONFIG.day` can move the clock those positions are
+  evaluated at (start at a chosen date/time, optionally accelerated) without
+  replacing the astronomy.
 - **Theme-tinted lighting**: each theme may pull the physical colours toward
   its own palette and set its own day/night exposure, without replacing the
   physics (`window.THEMES[...].lighting`).
@@ -126,7 +128,10 @@ Groups:
 | `lights` | twilight switching window of every artificial light (`offDeg`, `onDeg`, `softDeg`) |
 | `atmosphere` | turbidity, moon/star gains, night floor, albedo/sky/air gains, haze residual, cloud albedo and cloud haze, cloud shadows, terrain shadows |
 | `stars` | star colour `tint` and `brightness` |
-| `day` | `simulation`, `cycleSeconds`, `fixedTime` |
+| `sun` | `angularRadius` (disc size only, 12x physical by default) |
+| `moon` | disc size (`angularRadius`, 12x physical by default), `texture`, `lightGain`, `earthshine`, `limbDarkening`, `brightness`, `halo`, `flipU`/`flipV` |
+| `camera` | `aim` (`'off'` or `'moon'`), `aimEase`, `aimBob` |
+| `day` | `startAt` (`'YYYY-MM-DDTHH:MM'` or null), `speed` (virtual s per real s) |
 
 ### World scale
 
@@ -169,13 +174,19 @@ All off by default, all documented in `config.js`:
   ground texture (orientation check).
 - `terrain: { wireframe: true }` - draw the mesh edges.
 - `ground: { style: 'streets' }` - labelled street map instead of satellite.
-- `day: { simulation: true }` / `weatherSim: true` - deterministic day cycle and
-  weather cycle for comparing looks.
+- `day: { startAt: '2026-10-29T20:56', speed: 1440 }` - start the scene at a
+  chosen moment and run the clock accelerated (1440 = one day per minute);
+  `speed: 1` runs it at real time from that moment, `startAt: null` is strictly
+  real time. Sun, moon, phase, clock hands and weather all follow that clock.
+- `weatherSim: true` - deterministic weather cycle for comparing looks.
 
 ## URL hash parameters
 
 `http://host:58881/#flight=N&fetch=S`
 
+- `at=2026-10-29T20:56` - start the clock at this local date/time (overrides
+  `CONFIG.day.startAt`).
+- `speed=1440` - virtual seconds per real second (overrides `CONFIG.day.speed`).
 - `flight=N|NE|E|SE|S|SW|W|NW` - heading of the straight flight corridor (used
   when `CONFIG.orbit` is disabled)
 - `fetch=N|NE|E|SE|S|SW|W|NW` - direction the tile mosaic is prefetched ahead of
@@ -248,6 +259,7 @@ window.TRANSLATIONS['Sunrise']['xx'] = 'MyTranslation';
 ├── vendor/
 │   ├── clouds3d.js          WebGL scene renderer (sky, clouds, terrain, lights)
 │   ├── suncalc.js           sun/moon positions - ISC (SunCalc by mourner)
+│   ├── moon.jpg             lunar surface map for the moon disc - CC BY 4.0
 │   ├── plane3d.js           low-poly aircraft model - CC0
 │   ├── stars.json           Yale Bright Star Catalogue subset
 │   └── LICENSE              per-library license attributions
@@ -274,5 +286,7 @@ window.TRANSLATIONS['Sunrise']['xx'] = 'MyTranslation';
 - **Copernicus DEM** (terrain, via Mapzen/TILEZEN terrarium tiles): open data -
   <https://registry.opendata.aws/terrain-tiles/>
 - **Yale Bright Star Catalogue** (star positions, via `vendor/stars.json`)
+- **Solar System Scope** (lunar surface map, via `vendor/moon.jpg`): CC BY 4.0 -
+  <https://www.solarsystemscope.com/textures/>
 - **OpenStreetMap Nominatim** (reverse geocoding): ODbL -
   <https://nominatim.org/release/>