docs(skills): drop the dead target key from the objectstack-api object_operation example (#11291) (#11748)

`ApiEndpoint.target` became optional in #10338 (landed as #11290): it is
required at publish only for `type: 'flow'` and is UNREAD for
`type: 'object_operation'`, which is addressed by `objectParams.object` /
`.operation`. Nothing checks a `target` written beside them against
`objectParams.object`, so the `leadFeed` example was teaching a dead string —
the exact AI-authoring trap #10338 removed. The in-tree examples and the
protocol/getting-started docs were swept in #11290; the published skill was
out of that card's file surface.

The example now omits the key. No explanatory note was added: the published
skills token ratchet had zero headroom on this file (ceiling 6348, file 6348),
and the card made that note conditional on budget. The gate-description lines
(~212-214) already state the per-type rule ("an `object_operation` needs both
`objectParams` halves; a `flow` needs a `target`") and stay unchanged.

Lower the file's ratchet ceiling 6348 -> 6342 to lock in the saving, per the
ratchet's own documented discipline ("a ceiling may be LOWERED by any PR that
shrinks its file ... always legitimate and encouraged").


Claude-Session: https://claude.ai/code/session_5213b871-5164-5bc3-8874-28b336bbcd40

Co-authored-by: Claude <noreply@anthropic.com>

Author: os-zhuang

scripts/check-skills-token-ratchet.mjs

@@ -142,7 +142,7 @@ export const CEILING_BASIS = {
  */
 export const CEILINGS = new Map([
   ['skills/objectstack-ai/SKILL.md', 6824],
-  ['skills/objectstack-api/SKILL.md', 6348],
+  ['skills/objectstack-api/SKILL.md', 6342],
   ['skills/objectstack-automation/SKILL.md', 12543],
   // basis 7228d6c25 (PR #10402 head), not main — see CEILING_BASIS.
   // +20 (13797→13817): maintainer ruling 2026-08-23 on PR #11141 — the three

skills/objectstack-api/SKILL.md

@@ -178,7 +178,6 @@ export const leadFeed: ApiEndpoint = {
   method: 'GET',
   summary: 'Lead feed',
   type: 'object_operation',
-  target: 'acme_lead',
   objectParams: { object: 'acme_lead', operation: 'find' },
   // `authRequired` omitted → defaults to `true`. Omission is SAFE.
   cacheTtl: 30,                          // seconds; GET-only; success answers only