IB-WP-0016-T07: review report and output policy; close IB-WP-0016

Enrich reports/generation-summary.md with the review-oriented sections
that the 2026-05-17 smoke run flagged as missing: ## Chapter coverage
(per-chapter source/entity/relation/anchor counts), ## Entities (the
deduped title list), ## Unmapped source chunks (sources with no
downstream generated artifact), and ## Page anchors (total plus
deterministic sample). Sections are conditional on data being present
so generic non-Lefevre runs stay terse.

Add docs/lefevre-readiness.md as the final sign-off document for
IB-WP-0016: what is wired (T01-T06 recap), an output policy table
(checked-in fixture sources vs disposable generated infospaces vs
archive targets), a seven-item reviewer checklist (duplicate entities,
relation endpoints, weak evidence, overgeneralization, anchor
coverage, unmapped sources, plan-vs-actual variance), a scale-up plan
from one-chapter to full-book, and the load-bearing risks still
outstanding (cross-chunk dedup, whole-run resume, adaptive routing
deferred to LLM-WP-0004 / IB-WP-0018, rate-table drift).

Closes IB-WP-0016 (Lefevre EPUB3 Infospace Readiness Pilot): T01-T07
all done; the workplan is set to status=done.

131 tests pass, 1 skipped (live OpenRouter smoke, correctly gated).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

workplans/IB-WP-0016-lefevre-ebook-infospace-readiness.md

@@ -4,7 +4,7 @@ type: workplan
 title: "Lefevre EPUB3 Infospace Readiness Pilot"
 domain: markitect
 repo: infospace-bench
-status: active
+status: done
 owner: markitect
 topic_slug: markitect
 created: "2026-05-14"
@@ -209,7 +209,7 @@ state_hub_task_id: "c6bf97c3-1c2c-4993-8f4f-97a48e01cce2"
 
 ```task
 id: IB-WP-0016-T07
-status: todo
+status: done
 priority: medium
 state_hub_task_id: "5ff1f11e-49ad-4c2d-bd4c-b8cc261309bc"
 ```