docs(agents): status table, test counts and release narrative for v1.29.0

Everything here was re-probed rather than carried forward, and four of the
rows were saying something false by the time they were read:

  * Core. The row still read "1.28.0 bumped, NOT yet published, latest is
    1.27.0" -- the v1.28.0 tag has since been pushed and the workflow ran.
    npm `latest` is 1.28.0 with a SLSA provenance attestation; the row now
    describes 1.29.0 as the prepared-not-published one.
  * Git. Tags now run to v1.28.0 and it IS pushed (`git ls-remote --tags
    origin`), with a GitHub Release at 2026-08-26T09:17:07Z.
  * MCP. Published `latest` is 0.2.8 and the registry entry is 0.2.8 too,
    NOT the 0.2.6 this row claimed for two releases. The cause is worth
    recording, so it is: a bare `GET /v0/servers?search=…` returns the
    FIRST-published entry -- for this server, 0.1.1 from 2026-07-10, still
    advertising `archlang-docs.vercel.app`. Probe with `&version=latest`,
    which returns 0.2.8, updatedAt 09:17:06Z, the same minute as the release.
  * VS Code. 0.17.0 is LIVE, confirmed on the FIRST gallery probe,
    lastUpdated 09:30:34Z -- ~13 minutes after the release, so the "the lag
    keeps growing" trend recorded here is not monotonic and the row now says
    so. 0.18.0 replaces it as packaged-not-uploaded.

Test counts RE-MEASURED by moving `editors/vscode/dist/server.js` aside and
back, two full runs: 3222 passing / 181 files with the bundle, 3219 passing
+ 2 skipped / 180 files + 1 skipped without. The pair read 3092/3089 earlier
the same day.

Also corrected a verification recipe this row has repeated since 0.14.0: the
`.vsix` bundle scan. A `"1\.\d+\.\d+"` regex (quote-delimited) silently
misses the `"@scope/name:1.0.0"` example, because that literal sits inside a
single-quoted string -- so it reports one match and flatters the check. Scan
unquoted with `\b1\.\d+\.\d+\b` and READ the context of each hit; the honest
result is two hits, one of them the unchanging import-diagnostic example.

New v1.29.0 narrative paragraph, deliberately short, and v1.28.0 demoted to
"the prior release" with its actual shipped state.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: ChanMeng666