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.
- routing/scripts/build-glyphs.mjs: maintainer shell (Usage/Exit codes/
collect-then-write — a missing/invalid source exits 1 with the kind named
and nothing written); recolors currentColor → #EB8008 in-memory and
injects a full-bleed #1A1A1A plate (stroke="none" — it must not inherit
the root's orange stroke); the committed SVGs are THE single source and
stay untouched
- sharp 0.35.5 as a routing devDependency (maintainer-only, zero runtime
deps); 'glyphs' script added
- 8× 256×256 PNGs committed (web/public/glyphs/) — the chat turn-card's
sendPhoto URL rides the Worker's static handler; two render bugs fixed
en route: density multiplied the explicit size attrs into 2048² (dropped),
and the plate inherited the root stroke (orange frame — stroke="none")
- SVG sources verified unchanged after the run
- upload-road-graph.mjs: wrangler-shelled maintainer tool (pre-flight 1-80MB,
round-trip verify hint); bucket araharah-graphs NOT created — R2 is not yet
enabled on the account (wrangler code 10042) — dashboard one-time activation
is the phase's user_setup item
- measure-route-cpu.mjs: 25-pair gate (corpus + seeded quadrant spread),
hrtime around routeAstar, warm-up excluded, unreachable probes reported
SEPARATELY from the routed p95, exits 1 over the 8ms budget
- Rule 1 (measured): the class set lacked *_link ramps — the graph FRAGMENTED
(7.7% of nodes in severed motorway islands; corpus pairs 'unreachable').
5 link classes added -> 311325 nodes / 677068 edges / 14.7 MB, all landmarks
in one component; enforced floor corrected 1KB -> 1MB (D-01)
- ladder (a) drop tertiary+residential: p95 17.8ms but 12/25 pairs unreachable
— REJECTED on correctness (D-03), reverted, ladder history recorded
- ladder (b) bidirectional A* (BH, Ikeda potentials, reverse-CSR WeakMap):
provably optimal (A1 625-pair sweep green), alternation balanced by heap
size (raw-top comparison starves the backward side 19501:3), reduction
signs in the standard feasible form. Measured: p95 ~38-93ms — NO GATE PASS.
The potential split halves each side's steering, cancelling the halved radius
- GATE FAIL is the honest verdict: ladder (c) — Workers Paid vs layout-v2 ALT
(still $0) vs free-plan-with-degradation — requires maintainer sign-off;
docs/ROAD-GRAPH.md carries the decision table and the fork contract
- 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
- standard encoded-polyline algorithm at 1e6 precision, double math
(no int32 shifts) so no coordinate range wraps silently
- decode THROWS on truncated varints — never partial/NaN points (T-05-02)
- round-trip law encode(decode(s)) === s proven on all vectors incl.
the external live-OSRM geometry (RESEARCH Finding 1)
- 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