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karti f81d5218d4 feat: SFO, LAX, both bridges, a road that reads as a road, and aeroplanes that move
**The aeroplanes were stuck because the wire could not describe motion.**
`WireAircraft` carried position, altitude and heading and nothing else, so the
client could only interpolate between the last two observations: every aircraft
replayed a segment it had already flown, arrived at the newest known point, and
sat still until the next poll landed five to fifteen seconds later. The feed had
the missing numbers the whole time and the server threw them away. Sampled live
from `api.adsb.lol/v2/point` while writing this — `gs` ground speed, `track`,
`baro_rate`, plus `r` registration and `t` type designator. They are on the wire
now in SI, aircraft dead-reckon along their own track and correct toward the
truth when a fix lands, and the click card an anonymous visitor gets says
"B739 · N68834". That last part is the enrichment FR24 was wanted for, obtained
from an ODbL feed we may actually republish.

**SFO and LAX exist.** A new `engine/airports.ts` composes an airport from
runways, taxiways, aprons and terminal masses, with markings drawn on a canvas
rather than modelled; the pattern of the runways is what the eye recognises from
altitude, long before any building does. SFO is the two crossing pairs on the bay
fill; LAX is the four parallels either side of the terminal horseshoe, plus the
Southland fields under the traffic that actually flies there.

**The Golden Gate and the Bay Bridge are those bridges.** One kit in
`engine/bridges.ts`, because a suspension bridge is a repeated tower, a catenary
main cable, a series of hangers and a deck — so both are configurations rather
than two private implementations. The Bay Bridge carries the real 2013 topology:
two suspension towers west of Yerba Buena, one east, then the piered causeway.
The freeway stopped being a wireframe overlay and became a road, with shoulders,
a median, and lane markings as texture.

**And the board got faster while all of that landed.** California went from
728,744 triangles and 562 draw calls to 391,169 and 371 — headroom from 2.8% to
47.8%. The Bay Area board is 506,550 triangles lighter than before this work.
Two things paid for it:

- `transmission: 0.08` on the aircraft cockpit glass. three.js runs a full
  transmission backdrop pass whenever any rendered material has transmission
  above zero, re-drawing the entire opaque scene into a second target every
  frame — so the city was rendering terrain, every block and every freeway piece
  TWICE. Measured by patching only that number in a copy of the built bundle:
  703,267 tris / 562 draws with it, 398,608 / 371 without. The material was
  already `transparent: true, opacity: 0.86`, so it was buying nothing.
- Flatness-adaptive terrain LOD, which collapses runs of lattice cells wherever
  the height and colour agree with the quad replacing them. The coastline is
  provably untouched — a patch collapses only when every point is on land and
  agrees about `park` — and a test asserts the drawn footprint matches the
  cell-by-cell area to 1e-6. `createTerrain` got *faster*: the vertices it stops
  emitting cost more than the flatness scan costs to run.

**The budget now watches the boards this was built on.** There was no `bay-area`
or `socal` cell — so SFO, LAX and both bridges all landed in frames nothing
measured, which is how a cap you do not have looks from the inside. Both are in
the matrix now with caps set from measurement, and the rationale lives in the
harness because JSON cannot hold a comment.

Two known defects ship with this, both recorded in TODO.md rather than hidden:

- `bay-area.desktop` drops about one frame in twenty (p50 16.7, p95 33.3). It is
  desktop-only and not fill rate — mobile runs the same 2.26 M triangles at a
  comparable pixel count and holds 16.7 flat — which points at the 2048 shadow
  map desktop uses against handheld's 1024. Measured at the commit before this
  work with the same harness: identical p95 33.3. Pre-existing, and invisible
  until the cell existed.
- The aeroplane glyph is still about 1.5x the Golden Gate's main span at chapter
  zoom, down from 2.5x. `GLYPH_MAX_SCALE` is 52 because the raw scale at the far
  end of the California orbit is 51.0 at a 60-degree field of view, and 26 —
  tried first — put the glyph at 0.0123 of the frame against the 0.012 where the
  wings stop resolving. The real fix is to clamp against the camera's focus
  distance rather than the aircraft's, which is a signature change.

Tests 1020 -> 1137. Typecheck, build, eight budget cells, no-binaries,
provenance, zero-config boot, dependency licences, arena source hashes and the
UI smoke across two viewports and two access tiers all pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-22 05:06:12 -07:00
karti db074e9cf7 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>
2026-08-21 19:44:24 -07:00