feat: tone-mapped render rig, studio devices, LA fidelity pass, UI overhaul

The build the studios needed, across eight workstreams and one strict file
partition.

**The render rig was the quality ceiling.** The renderer ran three's
NoToneMapping default while atmosphere drove the sun to 2.35 and assets set
emissives to 3.2, so every value above 1.0 hard-clipped to flat white — which is
why walls blew out and every fitting looked like a white rectangle. ACES filmic
tone mapping and an explicit output colour space land in `stage.ts`, and the
atmosphere intensity table and palette headroom are re-tuned against the new
curve rather than left tuned for the clipping we removed.

`engine/environmentRig.ts` builds a PMREM environment at runtime, procedurally,
so nothing binary is committed. There was no environment map anywhere before, so
every `metalness > 0` role had nothing to reflect and rendered dull grey — a
defect the code already documented against itself in `office/optimus.ts`, where a
whole material role was abandoned over it, and worked around in `modelX.ts` with
a fake emissive that this change deletes. Atmosphere remains the sole light
owner; the rig derives from the `LightingState` it already produced.

**Studio hardware exists.** There was no device concept anywhere in the product:
no type, no route, no state. `devices/types.ts` fixes a declaration/state/
capability/command contract that a smart light, a thermostat, a door sensor and a
charger all fit without a schema change, and both studios now carry a desk mic
and a computer speaker with deterministic simulated behaviour behind an adapter
seam a real API can occupy later. Reads are the demo and are open; commands are a
signed-in action and are kept off the read body entirely, because a shared cache
replaying a GET that turned a microphone on is exactly what the fail-closed
cache default exists to prevent.

**The ADS-B licence hole is closed.** `TERA_ADSB_ENDPOINT` accepted any URL, the
response was served publicly cacheable, and the attribution hardcoded adsb.lol
regardless of where the endpoint pointed — one env var away from republishing
non-redistributable data under an open-terms credit. The host is now allowlisted,
the credit is derived from the host actually configured, public cacheability is
conditional on redistributability, and a refused endpoint demotes to simulated
flights and says so in `degraded[]`. The gate is on the source, not the feature:
live aircraft and their detail cards stay open to anonymous visitors.

**The LA studio was never the smaller pack** — 16 rooms and 248 props against
SF's 4 and 28. Its deficit was fidelity per square metre: 98 of those props were
ceiling troffers, it bound no props to seats, placed none of the habitat kit, and
12 of its 16 rooms had no viewpoint. Density comes from new asset kinds rather
than more instances, because `furnish.ts` draws once per kind and folds colour
into the batch key, so repeat instances add nothing the eye can read.

**The interface stops being forty imperative mutations.** Every visibility
decision moves into a pure, tested `ui/chromeState.ts` and one applier, so the
chrome has coverage for the first time. Deleted: ~100 lines of CSS and two
bindings targeting elements that no longer exist, and a `body:has()` rule that
shifted the desktop layout by 160px for touch controls hidden there. Fixed: the
office picker tabs that drew their label and their badge on top of each other.
Added: a first-run flow, because the product is two verbs and neither was ever
stated on screen. Mobile is designed on its own terms instead of being the
desktop with things hidden — the plan view comes back, and the keyboard-only
shortcuts button is replaced by touch controls.

`arena/studioOps.ts` frames the whole thing as the multi-variable environment it
is, wrapping the same simulators the renderer drives rather than a headless copy.

Also removed `input/vehicle.ts`, which nothing but its own test imported.

Tests 385 -> 961, all passing. Typecheck, build, performance budgets across six
matrix cells, no-binaries, provenance, dependency licences, zero-config boot and
arena source hashes all green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

server/src/media/bindings.ts

@@ -1,4 +1,13 @@
-/** Server-authoritative lookup for authored office screen surfaces. */
+/**
+ * Server-authoritative lookup for the things an office pack *authored* — screen
+ * surfaces today, device hardware as well now.
+ *
+ * The rule both callers share: a client says "this screen", "this microphone",
+ * and the server checks the claim against a pack it resolved itself rather than
+ * against anything in the request. `officeHasMediaBinding` does it for a screen
+ * share; `server/src/devices/store.ts` does it for a device command, and reads
+ * the same bundled packs through `bundledOffice` for the same reason.
+ */
 
 import { Plan } from "../../../src/interiors/plan.ts";
 import type { Office } from "../../../src/interiors/types.ts";
@@ -17,10 +26,21 @@ const BUNDLED_OFFICES: ReadonlyMap<string, Office> = new Map(
 );
 
 /**
- * A bundled pack is public sample geometry, so its exact authored screen
- * catalogue is the only bundled exception. No real/private pack is inferred.
+ * The three packs this repo ships, by id, or `null` for anything else.
+ *
+ * A bundled pack is public sample geometry — it is compiled into the browser
+ * bundle, so its authored catalogue of screens and devices is already public by
+ * construction and the server reading its own copy tells nobody anything new.
+ * That is what makes it a safe exception, and it is the **only** exception: no
+ * real or private pack is ever inferred from anything, and an id that is not one
+ * of these three is not an office as far as this function is concerned.
+ *
+ * Why it is needed at all: the browser renders bundled packs without asking the
+ * API for them, so a viewer can be standing in `lumbridge-hq` on a deployment
+ * that has no `TERA_OFFICES_DIR` at all. Without this, every server-side check
+ * about the room they are in would have nothing to check against.
  */
-export function bundledMediaOffice(officeId: string): Office | null {
+export function bundledOffice(officeId: string): Office | null {
   return BUNDLED_OFFICES.get(officeId) ?? null;
 }
 

server/src/media/index.ts

@@ -5,7 +5,7 @@ export {
   type MediaSignalService,
   type MediaSignalServiceOptions,
 } from "./service.ts";
-export { bundledMediaOffice, officeHasMediaBinding } from "./bindings.ts";
+export { bundledOffice, officeHasMediaBinding } from "./bindings.ts";
 export {
   createIceCredentialProvider,
   deriveIceCredentialRateKeys,