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>
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