9b146f9e1fb36dccc29b13681d57b78d4b36c241
19
Commits
| Author | SHA1 | Message | Date | |
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  jpmschweitzerandClaude Opus 5
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9b146f9e1f |
fix(simulation): derive at the octaves a rung can actually reconstruct (T-1240)
Region rendered as fine uniform stucco while District and Quarter, on identical code, read as terrain. The cause was sampling: `min_wl_m` arrives as an LOD request and defaults to 0, so every invented octave contributed at every rung. MIN_WL_BANDS_M was meant to be the floor but is built from the rung's CELL SIZE (2 x DISTRICT_M), which stopped being the sample spacing at the D-255 extent inversion — a rung fixes EXTENT now and spacing falls out of the canvas size. The bands were off by roughly the cell count, and the served path never consulted them anyway. The cutoff is now derived from the resolved spacing, which is what this ticket asked for. Two things had to be measured rather than reasoned to get it right, and both corrected me. FIRST: the field was the culprit, not the renderer. I attributed the stucco to the client stipple painting noise onto a smooth field. Surfacing the terrain layer's own mean |relief_q gradient| in the capture readout settled it in one shot: Region 18.24 steps per cell — 144 m of relief between NEIGHBOURING cells — against District's 0.30 and Quarter's 0.07. The server was sending noise. That diagnostic ships here for the same reason `plane_variety` did in T-1213: a noisy field and a renderer inventing noise look identical, and one number separates them. SECOND: Nyquist is the wrong threshold. The first version floored at 2 x spacing, the aliasing limit, and Region barely moved (56.16 -> 59.73 lum spread, gradient still 18.24) because 2 samples per cycle is unaliased but renders jagged. The rungs that already worked say what the real bar is: District reconstructs its finest surviving octave at 34 samples per cycle, Quarter at 135. At 8x, Region goes to 1.08 gradient and 70.01 spread, and shows ridges and valleys. THE TRADE, taken deliberately and recorded in the tests: an 8x floor also truncates the coast warp's 2,048 and 1,024 m octaves at Region, the band T-1160 added for "one coastline at every rung". An earlier test here asserted that band must survive; it now asserts the opposite. Same reasoning as the relief: a 1,024 m coastline wiggle at 379.3 m per cell is 2.7 samples per cycle, so drawing it draws noise rather than coastline character — a rung cannot show shape finer than its own cell. The warp is amplitude-capped sub-pixel on the working grid, so what is lost is small. If a future pass wants the warp exempt, the fix is a relief-only floor threaded through derive_at_metres, NOT a lower multiple, which takes the stucco back. Global is exempt: its floor would be ~70 km and would truncate the whole warp band, and it needs none — the orbital derive leaves relief_q flat at 50. District (3.79 m spacing) and Quarter (0.948 m) floor below every octave in play and derive byte-identically, which their own test pins. Cache-safe by construction: the floor is a pure function of (rung, extent, body_radius), all three already in the step-canvas cache key. 0.4.12 is required anyway — this changes derived BYTES at Region, so a 0.4.11 entry holds a field this build would never produce. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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jpmschweitzerandClaude Opus 5
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07ed2a47ab |
fix(client): the Atlas was replaying a cache from a build that no longer existed (T-1239)
Ferrath's Global map drew no rivers at native resolution: 375 courses arrived and 0 were drawn. The report suspected the D-261 length cull or the water truncation. Both were innocent, and so was the renderer. The client served the canvas from its own disk cache (T-1183). Every payload for GJ820Bc predated T-1237 ( |
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jpmschweitzerandClaude Opus 5
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6cfd829445 |
feat(simulation): sub-cell composition — a summarised cell can contain its minority (T-1213)
D-258 invariant 2: descending the ladder must reveal COMPOSITION, so a cell reading "forest" globally contains the clearings, marsh, rock and scrub the vote suppressed. Below Global it contained nothing: morphology carried NINE zones at Global and exactly ONE (AlluvialPlain) at every rung under it, and vegetation collapsed to one class from District down. WHY THE EXISTING TIERS COULD NOT DO IT. vegetation_invention already perturbs moisture with a massif band and a texture band — but that pair was built for cross-rung coherence and is weighted 70/30 specifically so "the texture term alone can never outweigh the massif term". It is designed NOT to change a verdict, which is the exact opposite of what composition needs. And it could not simply be turned up. Measured: 50.2% of the texture field's amplitude sits in its 32,768 m octave alone, and everything at or below 2,048 m holds 5.9% of the total. Across a District window only that 5.9% varies, which after the 30% weight and a ~29-point ceiling swings moisture by +/-0.51 points against vegetation gates 5-15 points apart. Nothing could ever cross one. That is the geometric series, not a tuning shortfall — raising the ceiling enough to matter at District would make the field violent at Region. So a third tier carries the fine band ALONE, normalized to its own full swing: quiet where the coarse tiers are loud, loud where they have nothing left to say. It feeds BOTH classification inputs, because moisture alone would have left morphology just as flat. CONSERVATION IS THE BOUND, not weighting (D-258 invariant 3). The field is zero-mean, so a downsample returns the summary it was added to. Pinned two ways: a field-level zero-mean test, and a real-terrain test that derives a District-sized patch and asserts the majority vegetation class survives. RARE INCLUSIONS, and this was a correction. The smooth term is a gentle sway around the base, so it can only flip a verdict where the ground already sits near a gate — which made deep-in-class ground immune, and the conservation test duly measured a patch that was 100% Forest. A monoculture is the flat map this ticket exists to fix, one scale down. Jeroen: "maybe a dense forest should still sometimes produce a clearing or a rocky outcropping." D-258 says CONTAIN, not border on. A sparse high-contrast term now rides on top — thresholded value noise so inclusions are connected blobs rather than stray speckled cells. The same patch now reads 98.9% Forest with 1.1% Barren outcrops. The moisture half of an inclusion obeys the envelope rule (a world with no patchiness ceiling grows no glades — caught by the zero-ceiling test, which the first version failed by putting damp pockets on airless rock); the slope half does not, because an outcrop is geology and a dead world is exactly where bare rock should break the surface. The slope ceiling is 6, not the 15 first written. Measured against the window-derivation fixtures, base slope_q on ordinary ground is 2-6, so +/-15 did not vary the signal but REPLACED it — one fixture moved 6 -> 19 and two coastal samples flipped to Wetland on invented slope alone. The morphology gates are far apart because a cliff coast is a real landform; composition must let marginal ground fall both ways, never manufacture a fjord on a flood plain. NOT applied at the orbital rung, which is envelope-only by design and documents that it never invents slope — pinned by derive_orbital_at_metres_never_invents_slope, which caught the first version. Both goldens move in the IMPROVING direction, checked before updating rather than blind-refreshed: GJ338Bd moisture 75->85 distinct, slope 28->34 (range 0-50), materials 3->4 GJ244Ad moisture 25->42, slope 15->22, morphology zones 6->7, materials 2->3 Ladder effect (was -> now): Region moisture 25->39; District moisture 3->17 and vegetation 1->2; Quarter moisture 3->8. 45 server suites green, clippy clean. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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jpmschweitzerandClaude Opus 5
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5eb394b36f |
feat(simulation): relief_q — a local relief signal the deep rungs can resolve (T-1213)
The District and Quarter rungs rendered as flat colour, and the cause was not the biome work everyone assumed. Measured on Ferrath through the production canvas builder: at District the mean |elev_q delta| between neighbouring gridunits is 0.02, and NOT ONE PAIR in a 1290x540 frame differs by 2. elev_q spans 0-100 across the body's whole 8 km elevation range, so ONE STEP IS 80 METRES. A District canvas covers 2,048 m of ground, where the rolling relief a walker navigates by is metres to tens of metres -- a fraction of a single step. The sub-district detail IS generated (invent_primitives' scatter and relief bands compute it) and then rounded away. Confirmed by running the diagnostic with the octave cutoff disabled: still 0.02. relief_q carries that same invented fine component against a scale chosen to resolve it: 0-100 about a flat 50, RELIEF_FULL_SCALE_M = 400 m either side, so 8 m per step -- ten times finer than elev_q. elev_q keeps its body-absolute meaning and the Atlas legend stays true. Measured effect, elev_q vs relief_q (distinct values / mean 4-cell delta): Region 49 / 2.38 -> 101 / 21.86 District 10 / 0.08 -> 35 / 0.35 Quarter 8 / 0.02 -> 19 / 0.06 FIXED metre scale, never per-canvas normalization: the value for a piece of ground must not depend on what else is in frame, or the same hillside changes tone as the viewer pans. And it excludes elev_pct deliberately -- this is the departure from the surrounding land, not height above sea level; including the base would re-introduce the body-scale dominance that makes elev_q unusable down here. 50 at the orbital rungs, which skip invent_primitives by design. Nothing is lost: Global and Region still have varied elev_q (101 and 49 distinct values), and the client takes whichever field carries signal via a max, with no rung-name branching. The client's ruggedness driver changes with it. It was an elev_q GRADIENT, which cannot work across rungs -- the same 4-cell delta reads 21.86 at Region and 0.08 at District, so any single full-scale constant either saturates one or vanishes on the other. relief_q states relief outright, so |relief_q - 50| is the answer directly and a fixed metre scale is immune to that by construction. An absent plane reads FLAT, not zero -- 0 on this field means maximum relief BELOW flat, so a payload without it would have stippled the entire map. That is reachable: the field is #[serde(default)] so old-shape payloads decode. Two colorize tests whose fixtures predate the plane caught it. 2004 server tests, 1838 client tests, 0 failed. clippy clean. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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jpmschweitzerandClaude Opus 5
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566b566519 |
feat(ui): relief and vegetation texture over the terrain hue (T-1194)
RimWorld technique 4 from the reference map: texture as data, not decoration.
WHY IT WAS FLAT. The base layer reads hue from morphology and lightness from
elev_q. Below Global, morphology resolves to exactly ONE zone per canvas, so
the frame became a single colour whose only variation was a lightness ramp too
subtle to see. Measured on Ferrath at Region: 1 morphology zone, but 49
distinct elev_q values. The information was already on the wire and arriving —
the renderer was discarding it by expressing it in lightness alone.
TWO MARKS, NOT ONE SLIDER — the ticket's design question (b), settled by
looking at the reference rather than reasoning about it:
- RELIEF stipple: fine, dense, darker, keyed to RUGGEDNESS not height. The
reference's high flat plains carry none while its ranges are dense with it,
so the driver is the local elev_q gradient; a high plateau stays clean.
- VEGETATION blotch: coarser, softer, marked on a half-frequency lattice so
it reads as patches rather than a second speckle at the same pitch.
Inline in the existing per-cell loop (question (a)) and always-on, base layer
only (question (c)). The TMP/MST/VEG toggles are ANALYTIC reads — stippling a
temperature ramp would corrupt the quantity being read.
THE BASELINE IS MEASURED, NOT GUESSED, and the first attempt got it wrong: a
1-cell ruggedness delta samples mostly quantization noise, reads
near-identically everywhere, and rendered as uniform static over flat green —
grain, not structure. The gradient saturates by about 4 cells (Region: d1 1.40,
d4 2.38, d8 2.41, d16 2.51), so the baseline is 4 and the full scale 4.
Verified by capture at native resolution: on Global the stipple now
concentrates on rugged ground and leaves plains clean.
WATER TAKES NEITHER MARK, and gets a flat tone. An earlier version excluded
Lake alone and stippled the entire ocean — the one surface with no relief to
express. Both open-water zones are excluded now.
The ocean also stops shading by elev_q, which is the same argument T-1188
already made for lakes and never applied here: elev_q on a water cell is the
bedrock UNDER the water, not the surface, so shading the sea by it paints
seabed relief nobody can see. Near a coast that bedrock rises steeply and
quantizes hard, which is exactly where it showed — a pale, pixellated, broken
fringe hugging every shore (Jeroen, on the capture). One tone for the sea reads
as water and lets the coastline be the edge.
D-255(e)-legal throughout: texture-space dithering of already-derived per-cell
values, decided per server cell by a hash of its own coordinates and values —
no sample invented between cells, identical on cache hit and miss.
Two colorize tests updated: both asserted the old ocean shading incidentally
while testing zero-fill/no-crash. Property under test unchanged.
1838 client tests, 0 failed.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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jpmschweitzerandClaude Opus 5
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8eb5cb9ff7 |
feat(ui): the Atlas ladder bottoms out at Quarter (D-255, T-1213)
Quarter becomes the deepest navigable rung. Block and Chunk leave the ladder. The rule, from the amendment: the deepest Atlas rung is the one at which a screen pixel shows one subtile. At the uniform 2x2 px display ratio a 3440x1440 window gives 540 gridunits on the short axis, so Quarter's 512 m extent draws 0.948 m per gridunit -- about one voxel per gridunit and one 0.5 m subtile per pixel. Block (0.237) and Chunk (0.119) magnify beneath the finest datum that can exist, and measured as exactly that on Ferrath: one morphology zone, one vegetation class, an unbroken colour field. They were not missing a feature; there was nothing left to show them. CHUNK ITSELF IS UNTOUCHED. It remains D-243's 64 m stream/derive unit and is where Phase 5 derives first-person walkable content -- D-012's load-around-the-player is expressed in chunks. Block remains the 128 m generator planning unit. Both keep their enum variants, their extent_m answers and their wire vocabulary. What was retired is the claim that a MAP of one is worth looking at. DEEP_RUNGS moved with the floor, and this is the part worth reading twice. It is a mandatory D-255(d) hardening: a per-body retention cap bounding how much ground an exhaustive pan can hold resident at fine spacing. Left as [Block, Chunk] it would have guarded rungs no client can request -- dead code -- while the accumulation gap silently re-opened under Quarter, now the finest navigable rung at ~0.95 m per gridunit. It is now [District, Quarter]. A control that names its targets by rung has to follow the ladder when the ladder moves. Six tests pinned the old floor and were updated rather than deleted, since each was protecting a real property: the clamp tests now clamp at Quarter, and the disk-cache tests use Region for "shallow" (District is capped now) and Quarter for "deep". One new test pins the distinction the change turns on -- the retired rungs are absent from RUNG_LADDER but still present in RUNG_EXTENT_M, because viewability was retired, not vocabulary. Also removes the four capture scenarios for the retired rungs, including the two blank goldens that had been passing against blank captures. 1838 client tests, 0 failed. Server clippy clean, step_canvas suite green. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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jpmschweitzerandClaude Opus 5
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4e503c3565 |
fix(simulation): a river course was one D8 hop, not a river (T-1237)
D-261 asked for contiguous river strokes, and the client got them by chaining hops back together after the fact. That could not work: each hop was warped independently, so a shared confluence point arrived as two points that no longer coincided -- 375 hops rejoined into 260 pieces, and Ferrath's Global map showed scratches rather than watercourses. The join belongs before invention, so it now happens on the server. river_course::build_paths walks the D8 cell graph into whole rivers from headwater to mouth, edge-drain, or junction with an already-walked river (including the joint cell, so a tributary visibly meets its trunk). step_canvas emits one course per river instead of one per cell, which also drops the per-hop warp and resampling -- a path's shape is the terrain's, so there is nothing left to invent. It is cheaper too: one point per river cell rather than three. The client's _chain_runs() and its endpoint index are deleted. Runs survive only for the reason D-261 gives them -- water splits a course, and a river crossing a lake is genuinely two strokes that must not be rejoined. Pinned by a real-terrain test on GJ380c rather than a synthetic graph, because the bug was caught by eye on real terrain: a lake must have an outflow that runs to sea level, and no such line existed. It asserts the property the eye was checking -- rivers are long, at least one reaches the sea, and every path is a contiguous walk. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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jpmschweitzerandClaude
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474ab90663 |
feat(ui): rivers as cartographic strokes (D-261, T-1237)
Rivers now appear on the whole-body map for the first time. Five on Ferrath's
Global canvas, drawn as 5 px strokes that stop at the coastline.
Four rules, all client-side over existing server data, computed once on canvas
adoption rather than per draw:
- fixed 5 px screen-space stroke at every rung
- contiguous geometry through the river's own cells
- never drawn over water — ocean and lake end a run
- culled below 15 px of on-screen length (3x the stroke: below that a line
is a square, not a river)
TWO THINGS THE MEASUREMENT FOUND THAT THE RECORD DID NOT ANTICIPATE.
First, the cull unit was wrong. A server "course" is an EDGE of the river
network — the stretch between two confluences — not a river. Culling per
course culls per segment, so a long river assembled from many short edges
vanishes entirely. Measured on Ferrath Global: 375 courses, 180 surviving the
water clip, and ZERO surviving a per-course cull. Edges are now chained
end-to-end into rivers before the cull is applied, which also delivers the
other half of D-261's "contiguous": per-course contiguity only makes each edge
unbroken; joining is what makes a river read as one line rather than dashes.
After chaining, 5 rivers survive at Global — the "major systems only from
orbit" behaviour the record predicted, arrived at by a different route.
Second, and worse: uses_orbital_derive() still read `Global | Region` while
the client's mirror had said Global-only since 2026-07-26. The D-255 amendment
claims "Region left the orbital derive set... it now takes the full
courses-aware derive". That was implemented against the MIRROR and never
against the authority, so Region kept running envelope-only and carrying no
courses — the exact thing the amendment said it had stopped doing. Both test
suites stayed green for two days because neither compares itself to the other.
Fixed here, with a note on each side pointing at the other, since the two
cannot be cross-checked automatically.
Also removes the two gates that withheld courses from the orbital rung — the
reason the whole-body map had no rivers at all. Whether a course is worth
drawing is measured in screen pixels, which only the client knows, so the
server now supplies geometry at every rung and the client decides.
The capture harness reports "drawn" alongside "courses", because "375 courses
arrived" and "375 rivers are drawn" are different claims and conflating them
is what made an empty map look like a data problem.
Client suite 1836 / 1810 passed / 26 skipped. Server suite green.
Co-Authored-By: Claude <noreply@anthropic.com>
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jpmschweitzerandClaude
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3a17624ddc |
style(simulation): cargo fmt the Global extent fix
Caught by the push gate, whose new named-failure block reported it as '- cargo fmt' with the fix command — the information the old anonymous '1 check(s) failed' withheld, on its first real outing. No behaviour change. Co-Authored-By: Claude <noreply@anthropic.com> |
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jpmschweitzerandClaude
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bdea719530 |
fix(simulation): Global was a 2x1 canvas — a sentinel outlived the extent inversion
Jeroen's Global map has been two coloured blocks all along. Not missing
hydrology, not a missing layer: serve_step_canvas_request zeroed Global's wire
extent, so every request arrived downstream as (0,0), clamped to (1,1), and
resolved to a 2x1 canvas.
That sentinel was correct when Global's size came from the body's region grid
and the client's extent field was meaningless. The D-255 extent inversion made
Global viewport-sized and this line silently outlived it. The commit titled
"size the Global rung to the viewport" was therefore correct and completely
unreachable — its tests passed by calling resolve_canvas_extent directly
rather than through the serve path, i.e. they tested the function that changed
instead of the path the data takes.
Two more places carried the same dead premise, both meaning the first canvas
ever built answered every later request and a resize could never take effect:
- GlobalTierCache keyed on body id alone. Now treats a size mismatch as a
miss, so the re-derive replaces it. Deliberately still ONE entry per body
rather than one per size: keying by size would make a tier that never
evicts accumulate an entry per viewport a player has ever used.
- The client's make_key collapsed Global's extent to a sentinel. Centre
stays collapsed — Global's canvas really is whole-body and origin-anchored
— but extent is now part of the key.
project.yaml 0.4.5 forces the 2x1 canvases already on disk to miss.
Verified through the capture harness, not by reasoning: server probe shows
req=(960,540) radius=6238.4 resolved=960x480, and Ferrath's Global now renders
continents, oceans, inland lakes and polar ice where it previously rendered
one solid rectangle.
Server suite green (45 binaries), client 1830 total / 1804 passed / 26 skipped.
Pair session with Jeroen, 2026-07-27.
Co-Authored-By: Claude <noreply@anthropic.com>
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jpmschweitzerandClaude
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145e3c8b11 |
style(simulation): cargo fmt the extent-inversion tests
Hand-written test bodies in step_canvas.rs did not match rustfmt. Caught by the pre-push gate, which is exactly its job — team-patterns.md's note that fmt auto-fixes and clippy is a quick lead patch, rather than something agents should pre-emptively duplicate. No behaviour change. Co-Authored-By: Claude <noreply@anthropic.com> |
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jpmschweitzerandClaude
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9c8fcc2f95 |
feat(client): size the Global rung to the viewport, not the region grid
Global took its cell counts from `global_cell_counts()` — one gridunit per region — and discarded the requested extent entirely. On GJ380c that produced a 191x95 canvas built from a heightmap stored at 512x256: roughly seven times the available cells thrown away before anything was drawn. The count also shrank as REGION_M grew, so tuning the scale ladder silently degraded the opener, which is why the top of the ladder got worse rather than better as the ladder itself was refined. Global now fits the largest 2:1 canvas inside the requested extent. It cannot take its ASPECT from the viewport — the canvas is equirectangular whole-body, 360 degrees of longitude by 180 of latitude, and must stay 2:1 or the cells stop being square and the map shears — so the existing letterbox absorbs the remainder. A hostile extent is still clamped; sizing to the request is not trusting the request. Global also joins the deep display ratio, making the band uniform. At 5 px per gridunit a 1920 px window asked for 384 cells across a body whose heightmap holds 512x256 — discarding stored detail to save work already done. At 2 px it asks for 960, which is heightmap-native: nothing thrown away, nothing invented, and the same screen area filled either way. A body with no radius is not a sphere (asteroid belt, oort cloud) and has no equirectangular surface to fit. Those degrade to the region grid — a visibly degenerate 1x1 canvas — rather than a plausible-looking lie at whatever size the viewport happened to ask for. project.yaml 0.4.3 -> 0.4.4 invalidates the persisted step-canvas disk cache. District/Quarter/Block/Chunk kept identical 960x540 cell counts through the extent inversion, so their cache keys are byte-identical while a District canvas now covers 3.6 km of ground instead of 1,966 km — a warm cache would silently serve pre-inversion canvases. Global still rides the orbital derive, so it carries no courses yet; that is the next step and is deliberately separate, being a cost question over the whole body rather than a sizing one. Pair session with Jeroen, 2026-07-26. Co-Authored-By: Claude <noreply@anthropic.com> |
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jpmschweitzerandClaude
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0a0419abcc |
feat(client): invert the Atlas rung relation — rung sets extent, not spacing
A rung used to fix the gridunit SPACING, with the canvas extent falling out of spacing x cell count. That is why the top of the ladder was unusable: at REGION_M spacing a viewport-sized canvas spanned ~251,658 km — six times around a rocky body — so the Region rung capped to the body and redrew the Global picture pixel-for-pixel. "Global and region look the same" was not a rendering bug; it was this relation, stated in metres. Inverted: a rung fixes the EXTENT and the spacing falls out of the canvas size. The shorter viewport axis spans exactly one cell of the rung's level, so a widescreen window shows more ground on the long axis rather than less on the short one. Every rung now shows the ground its name promises — Region 262x466 km, District 4.1x7.3 km — and the canvas cell count is viewport-driven and identical at every rung, so derive cost no longer varies with depth and resize is free. Consequences that fell out of the inversion rather than being chosen: - Region leaves the orbital derive set. It was envelope-only because at 251,658 km nothing finer made sense; at 262 km it is a genuine provincial map and takes the full courses-aware derive. Region having no rivers at all was much of why the top of the ladder read flat. It also joins the deep display ratio for the same reason. - The S2 station-spacing floor is deleted, not retuned. It guarded an O(1/spacing) blowup that the inversion makes structurally impossible (the canvas cell count is now constant across rungs, so stations-per-course is bounded however deep you scroll). Kept, it would do active harm in the opposite direction: a 2,048 m pitch across a 3.6 km District canvas places two stations and draws every river as a straight line. Station placement gets its own generator pass. - cap_extent_to_body is superseded and now a documented no-op. A canvas can no longer over-request a body by construction. The residual question — whether a rung's cell exceeds the whole body — is liveness, not capping, and is_rung_live_on_body() answers it by omitting the rung. Empirically it never fires on inhabited content: all six rungs are live on all 271 populated bodies with a radius. - snap_to_gridunit no longer truncates its multiplier to int. Post-inversion the deep rungs run sub-metre (Chunk ~0.12 m at a 1080 px short axis), where int(spacing) floors to zero and would collapse every request centre onto the origin. Both sides derive spacing from the same three inputs (rung, echoed cell extent, body radius) rather than one telling the other, so there is nothing to keep in sync beyond the constant table itself. Body radius already reaches the viewer via enter(); no wire change. Pair session with Jeroen, 2026-07-26. D-243/D-255 amendments to be backfiled. Co-Authored-By: Claude <noreply@anthropic.com> |
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jpmschweitzerandClaude Fable 5
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b39dd49950 |
docs(simulation): update step_canvas row-space doc — T-1186 is fixed (PR #206 review)
Hoshe's review finding: the build_step_canvas row-space convention block still described region_centre_latitude_deg as pole-anchored/bugged and said 'T-1186 stays open' — both false after this PR's own first commit. Rewritten to reflect the fixed state; the deliberate signed-convention rationale and the layer_proxy deferral (still true, still T-1181's scope) are preserved. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> |
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jpmschweitzerandClaude Fable 5
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dec5b0bc43 |
feat(simulation): lake_margin_q depth band — lake shorelines gain gradient vocabulary (T-1188)
Lake edges rendered as hard step-edges while ocean coasts got multi-tone transition bands: every coastal-transition morphology gate keys on ocean_fraction_q, definitionally 0 inside a lake basin (hypothesis (b) of the ticket; (a) disproven first — a shoreline-crossing sweep at 2048/512/128m plus a 10m fine sweep all land on the same continuous crossing, so positional refinement was never broken). New DistrictProfile.lake_margin_q (0-100 settled-hydrology depth band, from the same bilinear filled/elevation pair the lake test already samples; ceiling calibrated just above the observed p90 depth on GJ338Bd's 5,043 flooded cells), threaded through both derive paths onto EncodedStepCanvas (serde-default for shape tolerance) and down the client: protocol decode, terrain-layer plane, colorize shades Lake cells by depth band instead of elev_q (bedrock-under-water, the wrong signal). project.yaml 0.4.0 -> 0.4.1: the new wire field must invalidate the client disk cache via its version tag (T-1183's D-192 mechanism). Acceptance gates green with the new field (lossless round-trip, cache-hit==cache-miss, every rung). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> |
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jpmschweitzerandClaude Fable 5
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8af28f317b |
fix(simulation): PR #201 review round — wire extent clamp + coalescing tests
Hoshe finding 1: StepCanvasRequest.extent is no longer wire-trusted — clamp_step_canvas_extent enforces the D-255(b) canvas budget at the request boundary (per-axis cap 3840 defeating u32::MAX before any multiplication, then an aspect-preserving total-cell ceiling at the measured 3840x2160 = 8,294,400-cell workshop budget), mirroring the legacy carrier's clamp_window_n_v2 discipline; the Global rung ignores the wire extent entirely. StepCanvasResponse gains the extent echo field so a client can detect the clamp (the DistrictWindowLayer.n precedent — a pre-existing gap closed in passing, recorded on the ticket for T-1182). Seven new tests including an end-to-end u32::MAX request proving actual allocation respects the cap. Hoshe finding 2: submit_step_canvas coalescing now has the same two regression tests its submit_window sibling always had (same-key collapses to one pending item, different-key does not), exercising step_canvas_supersede_key. Targeted suites green: 1928 lib, acceptance gate 5/5, bridge_tcp 22/22, window_derivation_golden 6/6 byte-green. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> |
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jpmschweitzerandClaude Fable 5
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a64701645b |
style(simulation): clippy nits on the step-canvas batch (gate bounce)
Two needless mutable borrows in the serve system, one spurious markdown list marker from a doc-comment line wrap (a leading '- ' turned the whole T-1186 convention note into a lazy continuation), and a named row/col pair replacing the identity-op grid index in the settlement-id tie test. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> |
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jpmschweitzerandClaude Fable 5
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ab52897d66 |
style(simulation): cargo fmt on the step-canvas batch
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> |
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jpmschweitzerandClaude Fable 5
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cd2f342421 |
feat(simulation): step-canvas serving — tagged envelope (D-255, T-1181)
The D-225-discharging wire migration per D-255(c): a new
server/src/atlas/step_canvas.rs subsystem (six-rung StepCanvasRung
ladder — Global variable-extent rung 0 through Chunk 64m — the
StepCanvasRequest/StepCanvasResponse tagged envelope extending the
proven ShapeProbe discriminated-shape pattern, PNG-per-field dense +
MessagePack-native sparse encoding per the T-1179 measured table, and
both server cache tiers: the structurally keep-always GlobalTierCache
and the dual-axis StepCanvasCache with storage TTLs per rung and
SIM_STATE_TTL clock-bucket staleness per the D-227 amendment (1)
formula). Wired through bridge/{mod,tcp,local}.rs (sixth demux shape,
send_step_canvas_response mirroring the five existing senders),
gen_queue.rs (DeriveStepCanvas work item with per-connection-per-rung
coalescing, reusing the shared TerrainAnalysisCache), and plugin.rs
(serve/complete systems, lazy D-206 rung-0 population).
Acceptance gate (mandatory per D-227 amendment (3)):
tests/step_canvas_acceptance_gate.rs — cache-hit == cache-miss
byte-identical for every rung, lossless encode round-trips, cache
round-trips vs fresh derive, distinct-center sanity. 5/5 pass.
Station-spacing cap ADOPTED: course stations floored to District
spacing (2,048 m) at finer rungs — the S2-measured +38-87% chunk/block
course cost had zero display benefit at the same station density
(COURSE_STATION_SPACING_FLOOR_M).
Documented honest gaps, not shortcuts: settlement_id is a proximity
approximation (no footprint polygons exist yet); glaciation/flooded_q
sim-state planes are wire-shape-ready D-253 stubs; rung-0 uses signed
equator-anchored rows (the canonical D-256 core convention — T-1186's
wrong-latitude behavior applies unchanged and unfixed here, by
instruction).
Legacy district_window carrier byte-unchanged: window_derivation_golden
6/6 byte-identical, all district_window suites pass unmodified. Full
suite at implementation time: 2127 passed across 45 binaries.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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