docs(readme): add the corpus-size and ARB queue badges

[mbeacom]

Closes ADR-0025 action item 1 — the last claim in that record that had been reasoned rather than observed.

What this adds

Two badges to the README, both reading JSON the site now publishes:

Badge	Source	Renders
ADRs	$.checked from adrkit.dev/lint.json	25
ARB queue	$.totalItems from adrkit.dev/queue.json	6 pending

Why this is a separate PR

The URLs did not exist until #127 merged and the site deployed. Shipping the badges in that PR would have put two error tiles on this project's front page — the exact failure ADR-0025 exists to avoid — so the record tracked it as an open action item instead.

Verified end to end, not reasoned

GET https://adrkit.dev/lint.json   → 200  {"checked": 25, "findings": []}
GET https://adrkit.dev/queue.json  → 200  totalItems = 6, asOf = 2026-08-12
shields dynamic/json               → "ADRs: 25"  ·  "ARB queue: 6"

Both were rendered through shields against the live URLs before this was written.

One deliberate choice worth surfacing

ARB queue: 6 pending is not a flattering number — those six records (0003, 0005–0009) have been awaiting review since July. It is shown anyway. A queue badge that only ever reads zero is decoration; the number earns its place precisely when it is uncomfortable, and a tool whose thesis is that decision records must not lie should not hide its own backlog.

If you'd rather ship only ADRs: 25 and keep the badge row at four, say so and I'll drop the queue badge — but I'd argue for keeping it.

Notes

• No source changes; README and the ADR's action item only.
• The badge row is now five. If that feels crowded, the License badge is the most redundant of the five (the LICENSE file is one click away and GitHub surfaces it in the sidebar).

[Copilot]

Pull request overview

Adds live corpus-size and ARB queue-depth badges, completing ADR-0025’s remaining action item.

Changes:

• Adds ADR and pending queue badges to the README.
• Records successful end-to-end verification in ADR-0025.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
README.md	Adds both dynamic JSON badges.
docs/adr/0025-ship-badges-as-recipes-over-existing-output.md	Marks the badge action item complete with verification evidence.

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