diff --git a/plugins/knowledge/.claude-plugin/plugin.json b/plugins/knowledge/.claude-plugin/plugin.json
index 3035112fa..7d4c1a462 100644
--- a/plugins/knowledge/.claude-plugin/plugin.json
+++ b/plugins/knowledge/.claude-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/claude-code-plugin-manifest.json",
   "name": "knowledge",
-  "version": "0.10.20",
+  "version": "0.10.21",
   "description": "Ingest external knowledge into durable, synthesized artifacts. Ships a book-distillation pipeline (PDF/EPUB into concept-organized, author-attributed skill reference files), a YouTube pipeline (watch, transcript, link harvest, and repo-applicability synthesis), a course-digest pipeline (extract and synthesize online video courses — Dometrain, Teachable — into repo-applicable recommendations), and a docpage-digest pipeline (single online documentation page into a verified knowledge slice with dual verification — one cross-vendor verifier — and an interview handoff), plus a re-runnable setup action; a configurable library directory governs where synthesized artifacts land in the consuming repo.",
   "author": {
     "name": "Melodic Software",
diff --git a/plugins/knowledge/CHANGELOG.md b/plugins/knowledge/CHANGELOG.md
index a0654ad1c..03cb734b1 100644
--- a/plugins/knowledge/CHANGELOG.md
+++ b/plugins/knowledge/CHANGELOG.md
@@ -4,6 +4,23 @@ All notable changes to the `knowledge` plugin are recorded here. The `version` i
 `.claude-plugin/plugin.json` is the delivery vehicle — a consumer receives a change
 only after that version increases.
 
+## [0.10.21]
+
+### Changed
+
+- **`whats-new-opus-5` moves from deferred to the Anthropic profile's Models queue, on grounds its
+  own trigger never supplied.** The deferral read "release notes for a model the models `overview`
+  page already covers canonically; enqueue when Opus 5 enters or materially changes a fleet lane",
+  and that trigger has not fired. What moved the entry is custody: the `playbooks` Opus 5
+  model-adaptation chapter already cites this page as **sole authority** for three shipped claims —
+  thinking on by default, the 400 the API returns when thinking is disabled above effort `high`, and
+  the live effort-level enumeration that establishes the upstream Opus 5 prompting guide's own ladder
+  statement as truncated (all three re-verified live 2026-08-03) — and the `overview` page carries
+  none of them. The deferral's premise is therefore
+  false for exactly the facts already in use: doctrine ships on a page with no digest slice and no
+  custody record. Scope is this one page, not a reopened release-notes lane — `whats-new-sonnet-5`
+  carries no such citations and keeps its identical trigger.
+
 ## [0.10.20]
 
 ### Added
diff --git a/plugins/knowledge/skills/docpage-digest/context/anthropic-docs-profile.md b/plugins/knowledge/skills/docpage-digest/context/anthropic-docs-profile.md
index f6de891f6..a367b4300 100644
--- a/plugins/knowledge/skills/docpage-digest/context/anthropic-docs-profile.md
+++ b/plugins/knowledge/skills/docpage-digest/context/anthropic-docs-profile.md
@@ -220,6 +220,15 @@ Models:
 - <https://platform.claude.com/docs/en/about-claude/models/introducing-claude-fable-5-and-claude-mythos-5>
   — the launch source the corpus's own Fable 5 / Mythos 5 positioning claims rest on, and linked
   from the harness model-config doc's "Work with Fable 5"
+- <https://platform.claude.com/docs/en/about-claude/models/whats-new-opus-5>
+  — enqueued on custody grounds, not on a fleet-lane trigger that has not fired: the `playbooks`
+  Opus 5 model-adaptation chapter cites this page as sole authority for three shipped claims —
+  thinking on by default, the 400 returned when thinking is disabled above effort `high`, and the
+  live effort-level enumeration that establishes the upstream Opus 5 prompting guide's own ladder
+  statement as truncated — none of which the models `overview` page carries, so "the overview covers
+  it canonically" is false for exactly the facts already cited. A custody fact about this one page,
+  not a decision to start a release-notes corpus; `whats-new-sonnet-5` carries no such citations and
+  stays deferred
 
 Claude Code companion docs (digest in this order):
 
@@ -256,9 +265,6 @@ Deferred with trigger (not queued):
 - <https://platform.claude.com/docs/en/build-with-claude/fallback-credit> — the two API-side claims
   it would settle carry a weak, openly disclosed absence basis that nothing is built on; enqueue
   when an artifact actually depends on fallback-credit behavior
-- <https://platform.claude.com/docs/en/about-claude/models/whats-new-opus-5> — release notes for a
-  model the models `overview` page already covers canonically; enqueue when Opus 5 enters or
-  materially changes a fleet lane
 - <https://platform.claude.com/docs/en/about-claude/models/whats-new-sonnet-5> — release notes for a
   model the models `overview` page already covers canonically; enqueue when Sonnet 5 enters or
   materially changes a fleet lane