fix(docs-audit): count a declared client: whose row was never assembled

`clientsDeclared` was computed from two row-relative terms, so a correctly
single-quoted `client:` belonging to a row whose `route:` could not be read
fell out of both: its row never became a row, and its own spelling is the one
the recognizer reads, so nothing declined it. The value left the denominator
without a word while the file plainly declared it.

The declared-`client:` sweep is now file-wide over the same code-only,
type-declaration-excluded source #10500 built for the non-literal case, minus
the values a row window already claimed. It is billed to no row: an unclaimed
value is pushed to `declined`, so it is NAMED with its own line rather than
only bumping a number.

Fixes #10636

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DdCnBGcHeufjrq7drTD3wt

Author: claude