docs: correct four figures and one claim both guides had outgrown

[cmj0121]

A sweep of every mechanically checkable number in CLAUDE.md and README.md against the repo.
Five claims were wrong, all in the same direction — written true, then overtaken by work that
had no reason to revisit them.

claim	was	is
description average (CLAUDE.md)	173	204
description target (README)	"kept near 160 characters"	204 average, ceiling 320
level-1 cost (README)	"under 800 tokens"	~1,000 — name + description is 4,063 chars
allowed-tools grants with a space	70	79 of 173
references/ machinery (README)	"has so far gone unused"	used by references/iteration.md

The first three share one cause: #14 and #22 gave every description a negative boundary clause.
That was the trade that bought fewer misfires, so the paragraphs now name it rather than quoting
a figure from before it. The grant count is now stated as a share of the total, so the next
drift is visible inside the sentence.

The fifth is the one that was not just a number. Both guides used Phase 2.5 as the example
of what belongs in references/, and README still said the machinery had gone unused. Neither
holds: what actually moved is Phase 5, into references/iteration.md, because Autonomous
mode is the only mode that runs it. Phase 2.5 is now named as the counter-example it really is
— conditional, but eight lines, most of them the condition itself, so a fetch would cost more
than it saves. That matters because the two paragraphs are the repo's rule for what moves;
illustrating it with a case that fails its own second test taught the wrong thing.

Verified and left alone

19 plugins and skills · 380 queries at 20 per plugin, 10/10 labels, 12/8 train/validation ·
13 eval cases at runs: 3 · five verdict markers · the 320 / 500 / 300 / 100 thresholds ·
the model-tier roster (7 pins, 4 with context: fork + background: false) ·
spec-writer's 5000 words / 800 lines.

No plugin changed, so nothing bumps: neither behaviour nor catalogue copy.
make test 4/4, scripts/validate-fixtures and make doctor clean.

🤖 Generated with Claude Code