fix(metadata-protocol): route searchAll through the engine's $search expansion so the ⌘K palette recalls what the executor recalls

[hotlong]

Fixes #7643

What was wrong

searchAll (which serves GET /api/v1/search) resolved its own searchable set and compiled its own AND-of-OR, instead of going through the engine's ADR-0061 $search expansion that serves POST /api/v1/data/:object/query {search}. Two producers, and the palette's was a strict subset of the executor's.

Re-measured on current main before implementing — the card confirmed this at 76d74ecb and main has moved a long way since. The premise holds, but every line number in the card is stale: searchAll is now at protocol.ts:8520-8700, not ~7177-7411.

Mechanism — one producer, not two callers of one helper

The dispatch assumed routing searchAll through resolveSearchFields / expandSearchToFilter. Half of that is impossible and the other half turned out to be the weaker form:

• expandSearchToFilter lives in @objectstack/objectql, which depends on @objectstack/metadata-protocol. Importing it would close a package cycle.
• So the routing happens one level up: searchAll hands engine.find the query TEXT (search: q, a declared find option) per object and the engine expands it. That leaves one producer of search clauses rather than two agreeing by maintenance.

No per-object assumption blocked this. The concern that a cross-object sweep could not satisfy a per-object helper does not arise: the sweep was already a loop of per-object engine.find calls, so the per-object expansion fits exactly where the old per-object filter sat. Only the cross-object half stays local (which objects are swept, caps, ranking, title/snippet).

resolveSearchFieldResolution (from @objectstack/spec/data, already imported here for the #4254 ingress gate) is still consulted — but for the skip guard and the snippet source fields, not to build a filter.

What a caller observes changing

Three widenings and one narrowing, all detailed in the changeset:

1. Pinyin recall arrives on this endpoint. hnkj / huaningkeji now return the CJK row that POST /data/showcase_account/query {search} already returned.
2. Field resolution follows the object. Declared searchableFields, else the auto-default — not the field-level searchable: true flag, which $search has never read. searchableFields' own spec description already named global search as one of its three consumers; this makes that true.
3. Enum columns match by option label; virtual formula fields are excluded.
4. Narrowing, and found by the ablation: the old fallback chain ended in "the first text-typed field", which on an object whose only text column is its PK selects id — so every keystroke ran {id: {$icontains: term}} against system/junction/log tables. That is $search 自动字段集：nameField/name/title 被无条件前置，绕过 SEARCH_AUTO_EXCLUDED_FIELDS——搜索会打到主键 #4483's defect, which the executor had fixed and this path had not. Such objects are now skipped.

Unchanged: object sweep and opt-outs, caps, ordering, RLS/RBAC, response shape. The $search executor path is untouched — pinned, not merely asserted (below).

Folding in #7850 rows 2-3

Row 3 ("case-insensitive substring matching via $contains") was already corrected on main by #7641's landing — the card's own root-cause paragraph naming it as stale is itself now stale. Row 2 ("case-insensitive LIKE") was still present and is corrected here: LIKE names no operator in this vocabulary and, since #6518's LIKE→GLOB change, not even the SQL the compilers emit.

Left alone as instructed: #7850 row 1 (search-conformance.ledger.ts:23, spec seat — #7850 stays open for it) and objectql/src/search-filter.ts:18, which is correct as a declaration under #4706 Q2 = A.

Verification

Union re-run after the final commit, at 663d95e1b.

New suite packages/objectql/src/global-search-palette-recall.test.ts (13 cases) — it lives in objectql because that is the only package where both real implementations meet. The load-bearing assertion is parity, not "the palette finds pinyin": a palette widened by narrowing the executor would satisfy the latter and is a failure. Each probe compares both paths against each other AND against a written expectation, and the per-object filter both paths hand the driver is compared tree-to-tree.

Reverse verification, direction predicted before running: revert protocol.ts, rebuild, expect 5 red / 8 green. Measured 6 red / 7 green — the extra red was the id-scan finding above, which is how that fourth axis was found. The first ablation attempt came back all-green and was invalid: this suite resolves @objectstack/metadata-protocol through its built dist/, so the ablation only bites after a rebuild. Both legs were re-run with scripts/ablation-dist-preflight.mjs proving the mutation reached the artifact (--absent on the way out, present on the way back), and the restore was byte-identical (git status clean against the commit).

• @objectstack/metadata-protocol — 90 files / 1352 tests pass
• @objectstack/objectql — 207 files / 3642 tests pass
• @objectstack/rest — 116 files / 1921 tests pass · @objectstack/runtime — 157 files / 2391 tests pass (downstream consumers, prefix filter)
• Gate union from scripts/pm/dispatch-gates.mjs against the real changed files: all 13 derived families pass, plus check:nul-bytes
• check:type-check-debt --re-measure (the ratchet) initially caught a +1 in my own new test — Array.prototype.at is outside this package's tsc lib. Fixed rather than raised; ledger flat at 1968, none above recorded

origin/main merged immediately before opening. Stayed clear of PR #8770's regions (canonicalizeMetaRequestType at :211, its call sites, the saveMetaItem door) — no conflict.

Out of scope, filed not fixed

#8786 — renderTitle in this same function reads only the deprecated displayNameField, never the canonical nameField, and provisionPrimary stamps only the latter. Titling, not recall; left alone deliberately.

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📓 Docs Drift Check

This PR changes 1 package(s): @objectstack/metadata-protocol.

3 hand-written doc(s) reference the affected code and may need an implementation-accuracy re-verification:

• content/docs/concepts/metadata-lifecycle.mdx (via @objectstack/metadata-protocol)
• content/docs/kernel/services-checklist.mdx (via @objectstack/metadata-protocol)
• content/docs/protocol/kernel/http-protocol.mdx (via @objectstack/metadata-protocol)

⛔ 1 release-owned page(s) also reference the affected code. These are read-only:

• content/docs/releases/v9.mdx (via @objectstack/metadata-protocol)

content/docs/releases/ is RELEASE-OWNED (AGENTS.md "Documentation Guardrails"): release
notes are written centrally at release time, and a code PR that edits them is the exact PR
that guardrail exists to stop. They are still audited — read-only. If one of them is actually
wrong, file an issue or open a dedicated docs-only PR; do not edit it here.

Advisory only. To re-verify, run the docs-accuracy-audit workflow scoped to these files:
node scripts/docs-audit/affected-docs.mjs origin/main → pass the list as args.docs.