docs: close two deeper-sweep gaps in the bridge/plan ledgers

Two artefacts I'd flagged as "no touch needed" on first audit actually
did need touching once I re-read them:

* `docs/bridge-status.md` row #4 (Buchholz / Veblen Ordinals) said
  "BLOCKED — Well-foundedness of shared-binder cases is blocked by
  the failure of the self-lift."  That blocker is resolved
  (`RankAdm` + `RankLex`, 2026-05-26/27).  Updated to "PARTIAL
  (11/13 constructors closed under WfCNF; 1 in flight)" with the
  head-Ω-route landings named and a pointer to the live tracker.
* `docs/bridge-status.md` gains row #6 for the decoration bridge as
  a conceptual (not cross-repo) entry — the doc's stated scope is
  "experimental extensions and bridges between the minimal core of
  Echo Types and other domains", which the decoration bridge fits
  even though it has no adjacent-repo side.
* `docs/bridges/buchholz-plan.adoc` is the original phased spec
  from when E1–E7 were ahead of us.  Its "PLANNED" tags for
  Phase 2.2 rank-mono etc. are now dated; many of those phases
  landed under different module names.  Added a CAUTION banner at
  the top of the document pointing to the live tracker
  (`buchholz-rank-obstruction.adoc`), the live lane status
  (`roadmap.adoc` § Lane 3), and the per-session ledger
  (`CLAUDE.md`).  The body is left intact for provenance — it's
  still the cleanest single source of the original design context.

`scripts/kernel-guard.sh`: PASS.  No Agda modules touched.

https://claude.ai/code/session_013nLEeKZXpvHnrDZMgRm19S

Author: claude

docs/bridge-status.md

@@ -23,13 +23,19 @@ This document strictly tracks the status of experimental extensions and bridges
 - **Core Affect:** NO
 
 ## 4. Buchholz / Veblen Ordinals
-- **Status:** BLOCKED
+- **Status:** PARTIAL (11/13 constructors closed under WfCNF; 1 in flight)
 - **Dependencies:** Standard Agda
-- **Blockers:** Well-foundedness of shared-binder cases is blocked by the failure of the self-lift.
+- **Blockers:** `<ᵇ-+1` joint-bplus is the single remaining open constructor. The head-Ω domination route (option A) has its abstraction + per-marker dominances at both branches + the option-(b) head-Ω inversion lemmas all landed across 2026-05-27 (PRs #124 / #130 / #131); only the WfCNF-carrier structural recursion (Slice 2-bplus) remains. The earlier shared-binder-self-lift blocker is resolved (`RankAdm` + `RankLex` slices, 2026-05-26/27). Live tracker: `docs/echo-types/buchholz-rank-obstruction.adoc`.
 - **Core Affect:** NO
 
 ## 5. JanusKey / Categorical
 - **Status:** EXPLORATORY
 - **Dependencies:** Categorical foundations
 - **Blockers:** Higher-level abstractions (monads, adjunctions) are still evolving; core functors are stable.
 - **Core Affect:** NO
+
+## 6. Decoration bridge (conceptual, not cross-repo)
+- **Status:** EXPLORATORY (R5 deferred-research; cleanly abandonable)
+- **Dependencies:** `EchoIntegration`, `EchoChoreo`, `EchoGraded` (import only)
+- **Blockers:** Bridge is bounded by construction. Closes under any of the documented termination criteria: Track A/B/C failure, all candidate analogies retired, redundancy with retracted-prose graded-comonad framing, forbidden-rebrandings register addition, retraction-watch trip. Companion: `docs/echo-types/explorations/decoration-bridge/README.adoc`; module: `proofs/agda/EchoDecorationBridge.agda` (deliberately not in `All.agda`).
+- **Core Affect:** NO

docs/bridges/buchholz-plan.adoc

@@ -4,6 +4,21 @@
 :sectnums:
 :sectnumlevels: 2
 
+[CAUTION]
+====
+*Historical spec.*  This document is the original phased plan for the
+ordinal-notation / collapsing-function workstream as written when E1–E7
+were ahead of us.  The "PLANNED" tags below are dated; many phases have
+since landed under different module names (E1–E7 closed; the WfCNF
+restriction +  `RankPow` / `RankAdm` / `RankLex` slices replace the
+generic `Phase 2.2 rank-mono`; the WF-0/WF-1 well-foundedness is in
+`Ordinal.Buchholz.WellFounded`).  *Live per-constructor verdict*:
+`docs/echo-types/buchholz-rank-obstruction.adoc`.  *Live lane status*:
+`roadmap.adoc` § Lane 3.  *Per-session ledger*: `CLAUDE.md` § "Current
+rung state".  This file is retained for provenance and design context;
+treat its concrete "PLANNED" items as superseded.
+====
+
 [.lead]
 This document scopes the ordinal-notation / collapsing-function workstream
 (Workstream E in `roadmap.adoc`). It is a spec, not a theorem file.