docs(spec): the app and view liveness ledgers cite the deciding commit, or state the decision in words, in place of dead tracker numbers (#20840)

Part of #20234

Clause-②: no

Liveness slice 4a (claim `5909281604`). In `app.json` (10 sites) and
`view.json` (6), each note that cited a tracker number answering 404 now
names the commit that decided it or, where the number alone carried the
meaning, says what was decided. All 16 sites carried the same number,
and each now reads `(commit 8f10a79)`, the commit that wrote them. 16
`note` / `_note` leaves change and no other leaf does; no number is
added. Left for slice 4b: `field.json` (11) and `liveness/README.md`
(29). One `@objectstack/spec` patch changeset.

Local runs at `e5552bfc90`: build 71/71; spec `local` 578 files pass;
spec `repo` 41 of 45 pass; spec `typecheck` and the lint package's
liveness test pass; 58 derived gates, 57 exit 0
(`check:platform-checklist`: the pre-existing `auth-plugin.ts#twoFactor`
anchor, not per-PR CI). Lint: ESLint's config matches none of the 3
changed files (3 "no matching configuration" results, 0 errors);
type-aware linting is never enabled.

---
_Generated by [Claude
Code](https://claude.ai/code/session_01Sfe5YjBLwB9J3y8fvm2xq1)_

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

Author: objectstack-fleet[bot]

.changeset/20234-liveness-ledger-provenance-anchors-4a.md

@@ -0,0 +1,14 @@
+---
+'@objectstack/spec': patch
+---
+
+Notes in the `app` and `view` liveness ledgers that cited a tracker number which no longer resolves now either cite the commit that decided them or say the decision in words
+
+Clause-②: no
+
+Sixteen notes in the `app` and `view` ledgers cited a GitHub issue that no longer exists, so a
+reader could not tell why a row carries its verdict. Each such note now either names the commit
+that made the decision or, where the number alone carried the meaning, says what was decided.
+The `liveness/` ledgers ship in this package's tarball, which is why this is a release note at
+all. Note text only: no row's status, evidence, proof, producer or date changes, and no schema,
+export or runtime behaviour changes.