test(docs): guard published verb counts against registry

[ohdearquant]

Summary

• correct current published pack and verb totals to the registry's 12-pack, 90-verb surface, including the blob pack and recently added KG, brain, comm, and git verbs
• add a documentation scanner that recognizes aggregate and per-pack claims across numeric, spelled, hyphenated, inverted, table, handler, and wrapped forms while excluding historical ADRs
• validate scanned claims against the real verbs() catalog in the smoke suite and run focused scanner regressions in CI

Validation

• cargo test --workspace
• cargo check --workspace
• cargo clippy --workspace --all-targets -- -D warnings
• cargo fmt --all -- --check
• RUSTDOCFLAGS=-Dwarnings cargo doc --workspace --no-deps
• python3 tests/test_documented_verb_counts.py

Closes #1584

AI-assisted contribution: Codex prepared this change and PR description.