avail-pyrmts (shadow): thread binCol + range into fetchShardData

Same fix as `7ddb7104` for `/api/avail-geo`. Shadow-mode reader for
`/api/totals?kind=availability` was calling `fetchShardData(storage, k)`
without filter opts, so hyparquet loaded full `avail/agg/<tier>/<period>`
shards into memory. On real station-filtered queries (witnessed via
`wrangler tail` while loading a station-detail page) the shadow call
OOMs in `waitUntil` — invisible to the client (legacy path succeeds)
but defeats shadow-mode's parity-signal purpose.

Effective only once shards have multiple RGs sorted by `dt` (true for
`avail/agg/<tier>/` per Cascade-compactor convention; not yet for v2
shards — see `specs/avail-pyramid-v2.md` §7).

Author: ryan-williams

gbfs/api/src/avail_pyrmts.ts

@@ -250,7 +250,10 @@ export async function executeAvailViaPyrmts(
 
 	const shardRows = await Promise.all(
 		plan.segments.map((seg) =>
-			Promise.all(seg.keys.map((k) => fetchShardData(pyramid.storage, k).catch(() => [] as Row[]))).then((arrs) =>
+			Promise.all(seg.keys.map((k) => fetchShardData(pyramid.storage, k, {
+				binCol: pyramid.binCol,
+				range: { from: seg.from, to: seg.to },
+			}).catch(() => [] as Row[]))).then((arrs) =>
 				arrs.flat(),
 			),
 		),