docs: re-key architecture docs off the alknet mono-repo — speak as alkcall

The ported docs still framed alknet siblings (alknet-core/-call/-channels/
-http/-tls/-client) as live load-bearing context of this crate. With the
extraction complete and alknet headed for glue-level replacement, the docs
now speak as alkcall and cite the real sibling crates (alkhttp, alktls,
alktty, alktunnels, alktrader).

- ADR-054 (new): re-own the verifier-selection rule in-crate — three
  remote roles (public X.509 endpoint / transport relay / hub),
  ServerCertVerifier by PeerEntry presence, RemoteIdentity None
  load-bearing. Provenance: alknet ADR-034 (never ported), demoted to
  footnote. Resolves OQ-21's cross-repo authority gap.
- OQ-43 (new, deferred(scope)): composition-layer ownership and shape
  after the alknet replacement — the named receiver for the
  downstream-side deferrals (OQ-33 endpoint layer, OQ-41 QUIC-native
  substrate, OQ-42 hub broker, OQ-19 persistence adapters, ADR-045 dial
  seam). README layering diagram redrawn with the composition layer as
  TBD-ownership instead of "alknet / alknode" in concrete.
- Spec docs reframed: titles, self-references, dial/TLS/from_jsonschema
  homes, malformed legacy cite rows removed; dead relative research
  paths qualified as source-repo paths.
- ADR amendments (append-only): 027 (alknet-http -> alkhttp), 031 (post-
  extraction state), 044 (split landed as modules in alkcall), 045
  (name normalization; citation-space note).
- Citation hygiene: unprefixed/colliding source-repo cites prefixed
  ("alknet ADR-NNN (provenance)") across 009/011/022/034/035/038/040/
  043/044/045; stale OQ cites corrected (session registries OQ-04, batch
  semantics OQ-03, verifier rule ADR-054); stale anchors fixed.
- README provenance note consolidated; citation conventions documented.

Verification: markdown link check (all local links resolve, all in-crate
ADR cites point at existing decisions/ files); table integrity check
(uniform row widths across open-questions.md and edited tables); residual
alknet-mention sweep (only provenance/historical/intentional framing
remains); architecture review subagent pass with zero remaining criticals.
Docs-only change — no code paths touched.

docs/architecture/decisions/044-channels-subcrate-decomposition.md

@@ -74,7 +74,7 @@ alknet-channels-core  — the pure multiplexer (wire format, demux/mux,
 
 There are no `channels-hub` or `channels-worker` sub-crates. The hub and
 worker are **consumers** of channels, not sub-crates of it. The existing
-`alknet-hub` crate (`docs/architecture/crates/hub/README.md`) IS the hub —
+`alknet-hub` crate (source-repo path: docs/architecture/crates/hub/README.md — alknet, provenance) IS the hub —
 it depends on `channels-call` and uses the channels protocol as its
 substrate. A worker is just a worker — it depends on `channels-call` and
 uses `ChannelClient` (ADR-043) to dial. The hub relay logic (ADR-042) lives
@@ -168,11 +168,11 @@ The dependency direction is: `alknet-hub` → `channels-call` →
 
 ### Relationship to `alknet-hub`
 
-The existing `alknet-hub` crate (`docs/architecture/crates/hub/README.md`)
+The existing `alknet-hub` crate (source-repo path: docs/architecture/crates/hub/README.md — alknet, provenance)
 is the hub pattern: peer lifecycle, aggregated env, service discovery. With
 channels as the substrate, `alknet-hub` gains a dependency on
 `channels-call` and incorporates the relay logic (ADR-042). The hub spec
-(`crates/hub/README.md`) will be updated to reflect that the hub uses
+(that source-repo doc) will be updated to reflect that the hub uses
 channels as its transport substrate — one channels connection per leg
 (browser↔hub, hub↔spoke), with the relay translating `channel/open` and
 byte-forwarding data channels. The hub's existing responsibilities (peer
@@ -247,5 +247,15 @@ the dependency direction (hub/worker → channels, not channels → hub/worker).
 - ADR-043: ChannelClient (in `channels-call`; there is no
   `channels-worker` sub-crate — a worker is any crate that uses
   `ChannelClient` to dial)
-- `docs/architecture/crates/hub/README.md` — the existing hub crate (the
-  relay's consumer)
+- alknet hub crate (source-repo path docs/architecture/crates/hub/README.md, provenance) — the existing hub crate (the
+  relay's consumer)
+## Amendment 2026-10-13: the split landed inside alkcall, not as separate crates
+
+This ADR's decision text was authored when the channels protocol lived
+in the mono-repo crate `alknet-channels` and framed the split as
+sub-crates of it. The extraction (ADR-031, amendment 4) landed the
+`channels-core` (pure multiplexer) / `channels-call` (call coupling:
+channel 0 pre-negotiation, lifecycle ops, `ChannelCore`, `ChannelClient`)
+decomposition as **modules inside alkcall** — downstream depends on
+alkcall as a single crate. Hub and worker remain consumers (no
+worker/hub sub-crate), as decided here.