farthestPointAnchors + landmarkTables + landmarkCoverage over the
ĉ metric: edge weights floor-quantized once (Math.floor(seconds/q)),
exact integer Dijkstras (Int32 labels, binary heap, lazy deletion),
0xFFFF sentinel, 65000-quantum loud overflow. Traversal law mirrors
astar.ts verbatim: bit0 edges never relaxed in EITHER direction.
Test-vector corrections caught at GREEN (expectations were wrong,
implementation was right):
- L4: rows index by anchor POSITION (row-major [l*N+v]), not node id
- L6: the c-metric farthest node from corner 0 is interior node 18
(297q: interior hops cost 2x perimeter), not corner 24 (264q) —
verified against an independent brute-force Dijkstra
A 2-node graph has no degree>=2 candidates, so farthestPointAnchors
returns empty before any Dijkstra runs and never reaches the overflow
throw. Node 1 on a 3-node path is a candidate, so the selection pass
actually exercises the law.
Hand-computed vectors for the pure landmark compute core: deterministic
degree-filtered farthest-point anchors, exact integer quanta
(floor(2.55/0.1)=25, two edges=50), 0xFFFF sentinel + self-cell laws,
oneway asymmetry, the 65000-quantum overflow throw, and the 5x5-grid
corner-to-corner 264-quanta vector with coverage 1.0.
- bot/src/routing/worker-router.ts: module-scope per-env graph memo (1 R2 GET per
cold isolate, shared with the 06-07 cron arm via loadGraph), snap+A*+deriveSteps,
claim-gated 401 / 4096-cap 413 / V5 bbox 400, 200-null on every miss class,
ONE best route (no alternatives), category-only logs
- webhook.ts: /api/route arm delegating to handleRoute (405 non-POST)
- config.ts: ROAD_GRAPH: R2Bucket — first R2 binding (never a KV namespace, GE5)
- wrangler.jsonc: r2_buckets ROAD_GRAPH -> araharah-graphs with the fork law comment
- routing/src/http-source.ts: createHttpRoutingSource — slug-guard-first, fail-honest
(throw/non-200/malformed/null-body -> null), defensive RouteResult validation;
exported from index.ts; ladder note: backend #2 LIVE
- A7 re-pinned (06-01 named 06-04 as the owner of createHttpRoutingSource)
- test-side fix during GREEN: the R2 fake hands decodeGraph an exact ArrayBuffer
(Node Buffers are views; encodeGraph output is already an ArrayBuffer)
- bot 103 passed / routing 65 passed; both typechecks clean
- snapToGraph: bbox+margin guard first (honest null = router-pending,
D-03), then 3x3 coarse-grid neighborhood (0.002 deg cells, WeakMap
memo per RoadGraph — LAW 1 lazy memoize, O(local) not O(n))
- projection in cos(lat)-scaled degree space (Pitfall 8); returned
distance is haversineM; result carries the best segment's nameId
(null for the unnamed sentinel) for plan 07's cron street-hop
- oneway-reverse edges stay snap-visible (direction is A*'s law);
gridBuildCount() instrumentation kept internal to the workspace
- Pinned-layout gates: round-trip, bad magic/version/truncated -> null,
zero-copy view mutation, name pool, committed mini-graph fixture pin
- Each case lazy-imports ../src/graph.ts — ERR_MODULE_NOT_FOUND is the
red state (fixture-source.test.mjs pattern)
- one test per check, mirroring search/test/corpus.test.mjs: the suite imports
measurePairs from routing/scripts/route-corpus.mjs IN-PROCESS (never spawns
the CLI) — one measurement, two reporters, no drift
- RED: the measurement core does not exist yet -> 10 named ERR_MODULE_NOT_FOUND
failures; the committed dataset itself is already green material (task 1)
- fully offline by construction: zero network in the measurement path (T-05-05)
- L3 previously pinned the 05-01 empty-seed state (honest null at the pinned origin)
- it now asserts the default fixture source SERVES pair 1 (kl-tower-to-kl-sentral)
at its pinned public origin and resolves honest null ~300 m away (outside the
200 m tolerance, D-03)
- RED until plan 05-02 populates the committed fixture dataset
- synthetic injected datasets only — never the network, never the committed file
- F3 pins the 200 m haversine tolerance boundary; F6 the defensive pair skip
- F7 the lazy-index source gate (LAW 1); L2 the esbuild inline marker
- hand-derived vectors from the plan's <polyline_vectors> block
- external live-OSRM demo geometry (RESEARCH Finding 1) as ground truth
- P7 pins the truncated-varint refusal law (T-05-02)
araharah-executor