E's five caches landed at 3-6x shops (292 total: katoomba 20→80, fremantle 21→80, newtown 18→72,
bendigo 9→36, castlemaine 6→24). All five absorb cleanly and still place 3 venues; the R20 poster cap
auto-scaled off the live shop count exactly as designed (katoomba 111 posters at 80 shops).
- CAPACITY WIDENED (the R18 overflow fence, load-tested). At 4x the dominant drop cause was OVERFLOW —
an edge-side holding more shops than fit (katoomba 10 of 11 drops). Tightened the run: NODE_CLEAR 6→3
and a ROADS-ONLY RGAP 2→0.5 (the shared marched GAP is untouched ⇒ marched fixtures stay frozen).
Drops 7.9% → 5.5% (16/292). 0.5m also reads truer — a real AU main street is continuous terrace
shopfronts, not detached boxes. Stopped there deliberately: the next lever (spilling overflow onto a
DIFFERENT street) buys ~1% by putting a shop on a road it isn't on — dropping a crowded shop is the
honest trade. Residual drops stay COUNTED, now BY CAUSE (dropped_overflow/_overlap/_stranded).
- VENUE FACADE BIAS NOW COVERS pub. R16 exempted pub ('spine-fronted, +Z always open') — true on the
synthetic/marched towns, but on a REAL graph at density the pub landed where its frontage poster
overhung a cross street (newtown, -0.91m). The POSTER_CLEAR filter now covers every venue kind; still a
NO-OP on synthetic (every pub candidate already clears) ⇒ gig golden 0xb1d48ea1 frozen.
- Goldens re-pinned ONCE (base + gig, all five towns). classic 0x3fa36874 / gig 0xb1d48ea1 / marched
fixtures FROZEN. selfcheck ALL GREEN 51866/51866; scaffold + consistency GREEN; cross-process
deterministic.
- Fixed: my real-cache loader globbed *.json and tried to validate E's new index.json as a town cache —
it now skips it (that's B's selector index, not a cache).
Handshake → all: densities absorbed, goldens pinned. → F: re-measure venue_night + gate the five towns.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
A's finalization (ledger #1), the round's spine. Every filed R18/R19 finding resolved; the tag is F's.
- Fragmentation (D's finding; Fable ruled, A owns details). The naive real graph fragmented (katoomba 105
components, 58% street-metres on islands). plan_osm.buildRealRoads now: (a) JUNCTION-PROTECTED
Douglas-Peucker — a point shared by >=2 ways is a junction; simplify only BETWEEN junctions, never
through one (the collinear tee-off drop, the root cause) → 94-100% main-net alone; (b) cull/bridge —
main component + near-fragments joined (JOIN_TOL 12m; shop-island bridge <=200m), far SHOPLESS islands
culled. Result: 1 connected component on all 5 towns (katoomba 100% main-net, 2 islands culled). Every
dropped shop COUNTED in norm.dropped (ruling): katoomba 19/20 (1 crowd drop — R18 overflow prediction
measured), the other four kept all.
- E's poster-clearance finding fixed (gigs.js): a spine poster overhanging a real crossing carriageway is
skipped, measured exactly as the selfcheck kerb floor — a NO-OP on synthetic (gig golden frozen, pr()
consumed before the check). 23 real-town clearance failures → 0.
- Goldens pinned (A->E->A finalization): all 5 real towns on their real-roads output (katoomba 0xb7ffbca2,
newtown 0x6f984c81, fremantle 0xfb197000, bendigo 0x21179b3b, castlemaine 0x7c47f639). synthetic
0x3fa36874 / gig 0xb1d48ea1 / marched fixtures / classic / default FROZEN — the alpha changed nothing
outside the cache-schema path. selfcheck ALL GREEN 51670/51670; scaffold + consistency GREEN. Cross-
process deterministic.
- New finding filed (beta, non-blocking): spine-poster density scales with edges (katoomba 438 vs ~14
synthetic; draws low via instancing) → a beta posters-per-town cap.
Handshake fired → B/C/D/F: katoomba_real boots real roads, golden pinned, findings resolved.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The epoch headline (ledger #2). A v2 cache's roads[] now builds the CityPlan street graph FROM real
OSM geometry instead of marching shops onto synthetic avenues. SAME CityPlan schema out — B/C/D/F consume
it unchanged by contract. roads absent ⇒ the v1 marched fallback, so classic/gig/osm goldens are FROZEN.
plan_osm.buildRealRoads: project ways+shops to the local metre frame → simplify each way (Douglas-Peucker
eps~6m, the fidelity knob) → snap coincident points (<=3m) to shared nodes = real intersections →
straight-segment edges → classify main by OSM highway class + shop density → seat each shop on its NEAREST
real edge (real order, real side), marched with regularised spacing + a deterministic overlap-resolve pass.
Fidelity (charter risk #4): real edge/order/side + regularised spacing — NOT pixel positions (real shops
overlap; the no-overlap invariant is load-bearing). Alpha failure list in LANE_A_NOTES §R18: overflow drop
on short edges; intersections = shared-coordinates only (a D sim-graph risk); per-edge frontage-strip
blocks not planar faces (a B ground-render item); crowded-intersection overlap-resolve.
Proven: a committed synthetic irregular graph (main + two cross streets + a real intersection + an acute
angle + a dead-end lane + a curve) passes the FULL structuralSuite + gig district + byte-identical
determinism; mutation-tested non-vacuous (flip the facade facing → 'faces its frontEdge' fails). Robust on
messy inputs (single road, coincident dups, disconnected ways, all-roads-too-short → marched). All osm
goldens frozen; E's 4 trailing caches pinned on v1; katoomba_real UNPINNED (its real-roads golden pins when
E lands roads — the A->E->A finalization). selfcheck ALL GREEN 16810/16810; scaffold + consistency GREEN.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The half-day handshake so E's build_towns.py can fetch road geometry (ledger #1). Optional roads[]
on the town cache carries real OSM way geometry; plan_osm's graph lift (consuming it) follows in the
next commit. v1 caches (roads absent) stay valid — the marched fallback — so nothing shipped regresses.
- validateTownCache accepts schema procity-town-cache/1 AND /2; when roads[] is present each road must be
{ kind:string, pts:[[lat,lon],…] } with >=2 finite points (else rejected); <2 pts dropped, unmapped
highway kind → 'side' (warnings). ROAD_KIND maps OSM highway=* → CityPlan edge kind (main/side/lane/arcade).
- Full v2 contract in web/assets/towns/README.md (the doc E builds to): shape, road validity, the kind map,
the fidelity knob (charter risk #4), and the bbox-bound-the-roads rule.
- E's 5 existing v1 caches re-validate clean; selfcheck ALL GREEN.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The real-map scout (ledger #6), A's half. Scope fence held: NO new plan features, NO golden moved
(classic 0x3fa36874, gig 0xb1d48ea1, all three osm fixtures frozen). The scout proves the EXISTING
?plansrc=osm contract eats real geography.
- The town-cache contract (published FIRST — E builds build_towns.py to it). plan_osm.js gains
validateTownCache() (authoritative {ok,errors,warnings}), registerTownCache(), a generatePlanOSM(..,
{cache}) seam, and TOWN_CACHE_SCHEMA/MIN_TOWN_SHOPS(6)/MAX_TOWN_SPAN_M(5km). Shape: {schema,key,town,
source,license,attribution,center{lat,lon},shops[{id,name,type,lat,lon,suburb?}]}. Home declared:
web/assets/towns/<key>.json (+ README.md full spec). Documented in CITY_SPEC v3.2 + LANE_A_NOTES R17.
- plan_osm hardened: blank name -> registry label; the validator gates finite center/coords + a >=6-shop
floor and warns on unknown-type(->opshop)/dup-id/span>5km. Proven vs thriftgod's real 2,828-shop
city_source.json: boots a valid plan, 0 bad coords, 0 'undefined' names.
- selfcheck: a committed synthetic-adversarial contract suite (valid-messy caches boot + pass structural/
gig; invalid reject; wide-spread warns; registry seam) + an auto-loader for web/assets/towns/*.json
(validate -> suites -> pin per-town golden), empty and green until E lands caches. ALL GREEN 15277/15277.
- v4 charter risk list (LANE_A_NOTES R17): the MEGA-STRIP (unbounded bbox -> 11.6 km strip; town selection
is E's real lever, warned >5km); sparse compact towns (2 km inner-Canberra held 6 shops); osm facades
clear (rows 54 m apart) so R16's bias is a no-op on real towns.
E->A handshake: E drops a cache in web/assets/towns/, the selfcheck prints its golden, I pin it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The carried brief (slipped R7) lands complete — all four items, qa.sh --strict GREEN.
1. Selfcheck PARITY: extracted structuralSuite(plan,label) and run the FULL invariant suite
on every (source, town) — synthetic + both OSM towns get identical coverage (storeys,
one-shop-per-lot, facing, within/cross-block overlap, corridor coverage, determinism,
exactly-one-openLate). ALL GREEN 1727/1727 (was 1362; OSM went subset → full ×2 towns).
2. SECOND TOWN: Katoomba (Blue Mountains, 19 shops, op-shop/book heavy) — regional contrast
to inner-Melbourne. osm_fixture.js → OSM_TOWNS{melbourne,katoomba}+DEFAULT_TOWN;
generatePlanFor(seed, source, {town}); ?plansrc=osm&town=katoomba. Golden 0x0f652510.
Melbourne 0x34cfdec0 + synthetic 0x3fa36874 UNCHANGED (town key kept off the plan).
3. "Add a town" recipe in LANE_A_NOTES (R8): extract → OSM_TOWNS → pin golden → tell F.
4. Normalization + LOG: importer bends real data to the contracts (unknown kind→opshop,
hours-clamp so only one shop is openLate, video-preferred landmark w/ fallback) and logs
it via {report}; selfcheck prints per-town (e.g. melbourne hoursClamped:5, openLate:video).
For F: three goldens to pin, gate keyed (seed, plansrc, town); selector gained {town} — see
LANE_A_NOTES R8. Screenshots docs/shots/laneA/osm-{melbourne,katoomba}.png.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The carried-over OSM plan source (no-showed R4–R5) lands complete, invariants green — a
second CityPlan producer behind the same contract, so B–F consume it unchanged.
- osm_fixture.js: 95 REAL inner-Melbourne secondhand/charity/music/book/toy/antique shops,
extracted deterministically from thriftgod city_source.json (Overpass cache), imported as a
module ⇒ ZERO network.
- plan_osm.js: generatePlanOSM(seed) — project lat/lon→metres, bin shops into latitude-band
avenues off a spine (real row + real E–W order preserved), march into a valid non-overlapping
CityPlan, centre on origin, report true 362×486 bbox, real shop names, one openLate video.
- index.js: generatePlanFor(seed, source) selector — default 'synthetic' BYTE-IDENTICAL
(golden 0x3fa36874 untouched); 'osm' → the importer. generatePlanOSM exported for F.
- selfcheck.js: parameterized by source — OSM runs the full structural invariant suite
(frontEdge/facing/no-overlap/chunk-coverage/finite/JSON/determinism/openLate) + its own
golden 0x34cfdec0; synthetic-only brief checks skipped. ALL GREEN 1362/1362.
- map.html: ?plansrc=osm renders it (reference wiring for F). Screenshot in docs/shots/laneA/.
- CITY_SPEC: plan-source note; LANE_A_NOTES R6: seam + goldens + shape-diffs for F's gate (F2).
Honest cut: street geometry regularized (real row+order drive it, exact metres do not);
name-parody deferred. qa.sh --strict GREEN.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
