chore(ci): refresh the Test Core shard-timings dataset

[github-actions]

Refreshes scripts/test-shard-timings.json, the balancing input for the Test Core
shard split. Opened automatically by .github/workflows/shard-timings-refresh.yml.
Every byte came out of scripts/measure-test-shard-timings.mjs; nothing here was
hand-edited, and no bound, timeout or matrix entry was touched.

Source

Measured across 13 accumulated run(s) of the HOURLY schedule run of CI on
main — the full-battery run (#16467). A push run on main is affected-only and
is not a measurement of the workspace, so no push run feeds this file.

No single green run measures the whole workspace either — turbo's cache is namespaced
per shard and only main pushes write it, so a
package whose inputs have not changed is a HIT and the generator refuses hits rather
than recording a replay as a duration. Runs are therefore accumulated, each fenced by
its own --run group, until every package has been EXECUTED by at least the
generator's minimum number of them, and each weight is the median of those executions.

• https://github.com/objectstack-ai/objectstack/actions/runs/38206660804

• https://github.com/objectstack-ai/objectstack/actions/runs/38202645321

• https://github.com/objectstack-ai/objectstack/actions/runs/38198819852

• https://github.com/objectstack-ai/objectstack/actions/runs/38195222269

• https://github.com/objectstack-ai/objectstack/actions/runs/38192273698

• https://github.com/objectstack-ai/objectstack/actions/runs/38186537664

• https://github.com/objectstack-ai/objectstack/actions/runs/38178693315

• https://github.com/objectstack-ai/objectstack/actions/runs/38174616574

• https://github.com/objectstack-ai/objectstack/actions/runs/38170438819

• https://github.com/objectstack-ai/objectstack/actions/runs/38166241661

• https://github.com/objectstack-ai/objectstack/actions/runs/38162059938

• https://github.com/objectstack-ai/objectstack/actions/runs/38157849210

• https://github.com/objectstack-ai/objectstack/actions/runs/38153696467

• Newest run in the set: 38206660804, commit 51b43a8dc45fef9d86229509ab6b2679ffa9d501 — the date this refresh carries.

• Every run above had all six Test Core (N/6) jobs conclude success with its six
  run-summary artifacts still retained; runs that were cancelled, failed or had lost
  their artifacts were rejected by name in the log before any of these were used.

All 72 package weights were measured in these runs; nothing was carried.

⚠️ This PR references #16173 and #16222 but does NOT carry a closing keyword for them,
because a weekly lane cannot know which cards a given run ought to retire. If this is
the first refresh to land, retire those two by hand as part of merging it.

Sample depth, run-to-run spread and suite-duration ceilings

Every one of the 72 weights rests on at least 3 executed runs; none is provisional.

Suite-duration ceilings: 72 held unchanged (a refresh never moves one; a raise is a ruling), 0 new, each new one its slowest executed run in this window x 1.25.

Every package carries a ceiling.

⚠️ 1 package(s) ran OVER their held ceiling in this window (marked in the table): the brake fired on main. This refresh does not raise them; that takes a ruling.

Each package's executed runs in this refresh (minimum 3), the spread of its readings in seconds, and the suite-duration ceiling Test Core grades it against: its slowest executed run x 1.25 when first set, then held by every refresh -- a ceiling is raised only by a ruling.

package	runs	min s	median s	max s	max/min	ceiling s
@objectstack/example-embed-objectql	13	6.91	24.11	41.20	5.96×	51.51
@objectstack/example-crm	12	14.02	34.07	55.06	3.93×	68.83
@objectstack/knowledge-memory	13	1.44	2.87	5.11	3.55×	6.39
@objectstack/cloud-connection	12	50.11	99.60	172.11	3.43×	163.89	held; this window: 215.14; ⚠ a window run is OVER its held ceiling
@objectstack/plugin-approvals	11	70.14	145.12	232.48	3.31×	290.60
@objectstack/service-realtime	13	7.33	14.46	22.14	3.02×	27.68
@objectstack/verify	12	120.87	230.44	335.17	2.77×	418.97
@objectstack/service-job	10	13.34	22.27	36.25	2.72×	45.32
@objectstack/trigger-record-change	9	32.75	68.97	87.30	2.67×	109.12
@objectstack/connector-mcp	11	18.94	27.20	49.57	2.62×	54.85	held; this window: 61.97
@objectstack/service-i18n	13	15.29	23.52	39.56	2.59×	49.45
@objectstack/downstream-contract	13	8.54	11.87	21.15	2.48×	22.71	held; this window: 26.44
@objectstack/client-react	12	5.57	8.90	12.98	2.33×	16.23
@objectstack/plugin-webhooks	10	37.28	51.50	86.43	2.32×	108.05
@objectstack/service-datasource	9	44.62	60.73	103.14	2.31×	128.93
@objectstack/trigger-api	13	14.69	23.82	33.69	2.29×	42.12
@objectstack/connector-openapi	11	21.58	43.95	49.25	2.28×	61.57
@objectstack/service-storage	10	72.31	121.00	164.06	2.27×	208.28	held; this window: 205.08
@objectstack/service-knowledge	10	17.29	22.43	38.86	2.25×	48.58
@objectstack/http-conformance	12	53.78	75.82	119.68	2.23×	149.61
@objectstack/plugin-auth	12	218.12	445.89	480.35	2.20×	600.45
@objectstack/runtime	10	335.18	461.07	730.47	2.18×	913.09
@objectstack/service-cluster	13	10.93	13.46	23.50	2.15×	28.46	held; this window: 29.38
@objectstack/service-package	11	12.38	18.10	26.32	2.13×	32.90
@objectstack/platform-objects	8	49.40	84.44	104.50	2.12×	135.03	held; this window: 130.63
@objectstack/connector-rest	11	23.21	30.63	48.65	2.10×	60.82
@objectstack/example-showcase	11	74.52	142.92	153.63	2.06×	192.05
@objectstack/client	11	67.22	118.45	138.35	2.06×	179.74	held; this window: 172.94
@objectstack/driver-mongodb	8	62.05	83.62	127.16	2.05×	158.96
@objectstack/metadata-core	13	15.17	22.90	30.72	2.02×	38.66	held; this window: 38.41
@objectstack/service-analytics	10	175.18	262.37	352.43	2.01×	440.54
@objectstack/hono	12	18.29	29.62	36.62	2.00×	45.99	held; this window: 45.77
@objectstack/observability	6	1.80	2.69	3.58	1.99×	4.24	held; this window: 4.49
@objectstack/plugin-pinyin-search	7	25.27	41.22	49.89	1.97×	62.37
@objectstack/service-cache	13	1.51	2.19	2.95	1.95×	3.69
@objectstack/embedder-openai	13	3.77	4.71	7.28	1.93×	9.10
@objectstack/metadata	5	82.41	112.34	152.40	1.85×	194.04	held; this window: 190.50
@objectstack/service-sms	11	20.45	25.16	37.63	1.84×	47.04
@objectstack/objectql	9	419.92	582.93	761.82	1.81×	952.27
@objectstack/service-cluster-redis	13	14.80	20.58	26.83	1.81×	28.00	held; this window: 33.55
@objectstack/rest	7	388.85	526.67	702.73	1.81×	878.41
create-objectstack	13	16.12	22.86	29.11	1.81×	38.40	held; this window: 36.39
@objectstack/formula	6	26.84	30.66	48.29	1.80×	56.95	held; this window: 60.36
@objectstack/service-automation	10	247.86	425.27	445.67	1.80×	557.10
@objectstack/driver-turso	8	121.30	168.94	217.89	1.80×	272.37
@objectstack/plugin-security	10	225.59	334.77	405.14	1.80×	474.43	held; this window: 506.43
@objectstack/metadata-protocol	7	345.35	370.78	615.76	1.78×	769.71
@objectstack/service-queue	9	34.50	51.58	61.16	1.77×	83.25	held; this window: 76.46
@objectstack/plugin-sharing	10	106.44	151.33	188.42	1.77×	235.53
@objectstack/service-settings	10	71.85	93.50	126.04	1.75×	157.56
@objectstack/driver-sqlite-wasm	8	50.64	78.52	88.78	1.75×	123.14	held; this window: 110.99
@objectstack/vitest-filter-preflight	6	14.17	17.27	24.66	1.74×	28.93	held; this window: 30.83
@objectstack/trigger-schedule	11	35.07	42.08	60.13	1.71×	72.40	held; this window: 75.17
@objectstack/example-todo	9	41.63	65.32	71.07	1.71×	88.84
@objectstack/lint	7	156.29	170.22	265.74	1.70×	332.18
@objectstack/knowledge-ragflow	13	1.61	2.52	2.72	1.69×	3.40
@objectstack/connector-slack	11	27.03	41.99	44.36	1.64×	55.45
@objectstack/core	6	74.03	82.36	121.13	1.64×	151.42
@objectstack/types	12	18.31	24.57	29.46	1.61×	32.05	held; this window: 36.83
@objectstack/driver-memory	8	87.96	120.89	140.93	1.60×	171.63	held; this window: 176.17
@objectstack/service-messaging	8	83.28	128.51	132.25	1.59×	166.91	held; this window: 165.31
@objectstack/plugin-dev	12	42.61	61.48	66.95	1.57×	87.97	held; this window: 83.69
@objectstack/sdui-parser	3	2.92	3.51	4.58	1.57×	5.18	held; this window: 5.74
@objectstack/mcp	9	56.85	83.77	87.17	1.53×	108.17	held; this window: 108.96
@objectstack/plugin-hono-server	6	41.64	51.97	62.88	1.51×	78.61
@objectstack/cli	9	1730.23	2125.32	2365.87	1.37×	2868.12	held; this window: 2957.35
@objectstack/organizations	10	81.71	102.80	110.32	1.35×	137.91
@objectstack/plugin-audit	7	110.50	141.61	148.74	1.35×	185.93
@objectstack/plugin-email	8	71.33	84.53	95.95	1.35×	119.94
@objectstack/spec	3	1156.48	1330.73	1522.84	1.32×	1903.55
@objectstack/driver-sql	8	275.27	354.23	360.60	1.31×	450.76
@objectstack/metadata-fs	5	40.62	45.68	46.41	1.14×	61.33	held; this window: 58.02

Measured per-shard suite time on the newest run in the set

1: 496s  |  2: 320s  |  3: 297s  |  4: 327s  |  5: 600s  |  6: 454s

Predicted bins, before and after

BEFORE  partition-test-shards: self-test OK (72 measured packages -> 74 shard items, 6 shards, max/mean 1.00x <= 1.3x, floor 1408s, bins 1870.13/1870.41/1872.28/1870.02/1871.88/1871.92s within the 2109.45s density cap, file-level slices: @objectstack/cli x3)
AFTER   partition-test-shards: self-test OK (72 measured packages -> 74 shard items, 6 shards, max/mean 1.00x <= 1.3x, floor 1331s, bins 1827.03/1824.14/1826.85/1826.62/1824.95/1824.59s within the 2125.32s density cap, file-level slices: @objectstack/cli x3)

No checks will start on this PR by themselves

It was opened with the Actions GITHUB_TOKEN, and GitHub's recursion guard means a
PR opened that way triggers no workflow runs. Push any commit to the branch, or close
and reopen the PR, to start CI.

Refs #16464, #16173, #16222.