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/channels-adapter.md

@@ -1,6 +1,6 @@
 ---
 status: draft
-last_updated: 2026-07-18
+last_updated: 2026-10-13 (alkcall reframing)
 ---
 
 # channels-adapter.md — ChannelsAdapter and ChannelManager
@@ -69,7 +69,7 @@ transport's stream count differs.
 ## `ChannelManager`
 
 ```rust
-// In alknet-channels-core:
+// In alkcall (channels subsystem):
 pub struct ChannelManager {
     channels: Mutex<HashMap<u32, ChannelState>>,
     handlers: Arc<HandlerRegistry>,
@@ -238,7 +238,7 @@ The runner's `select!` loop exits when all `MuxHandle` clones drop (the
 `new_pumps` sender closes) — the natural shutdown signal. This matches the
 dynamic `channel/open` model.
 
-## The two-pump pattern (ADR-078 — documented here for handler authors)
+## The two-pump pattern (ADR-050 — documented here for handler authors)
 
 Handlers with a two-pump shape (two `tokio::io::copy` pumps, one per
 direction — tunnel, SSH `direct-tcpip`) MUST shut down the opposite sink
@@ -262,7 +262,8 @@ tokio::try_join!(c2t, t2c)?;
 
 The three-pump pattern (TTY's `pump_session`, coordinating via the
 `exit_code` future) does not have this deadlock — the `exit_code` future is
-the third signal. The two-pump pattern is documented in ADR-078; the
+the third signal. The two-pump pattern is pinned in-tree by ADR-050
+(`channels::pump_bidi`); the
 shutdown-on-completion contract is a handler-level concern, not a
 channels-layer one.
 
@@ -308,7 +309,8 @@ All design decisions are documented as ADRs in [decisions/](decisions/).
 
 - ADR-039: ChannelsAdapter and ChannelManager (the decision)
 - ADR-035: channels pure channel multiplexing (the umbrella decision that
-  amends ADR-034/074/077)
+  amends ADR-034 and the source-repo connection/from_source + TTY-inside-channels decisions —
+  alknet ADR-074/077, provenance; the in-crate homes are ADR-007/008)
 - ADR-036: channel 0 pre-negotiated (the `preinstall_channel_0` step)
 - ADR-037: channel lifecycle operations (the ops registered on `call_ops`)
 - ADR-038: ChannelBidiStreamSource (what the manager constructs per
@@ -318,7 +320,9 @@ All design decisions are documented as ADRs in [decisions/](decisions/).
 - ADR-041: per-identity channel cap (the `ChannelLifecyclePolicy`
   consulted by the `channel/open` handler; the relay consequence for
   hub-relayed channels)
-- `docs/research/alknet-channels/poc-summary.md` §Issues Surfaced #4-#7
-  (REQ-CH-01..04, the two-pump deadlock)
-- `docs/research/stream-unification/findings.md` — the research that
+- Source-repo POC research (alknet provenance):
+  `/workspace/@alkdev/alknet/docs/research/alknet-channels/poc-summary.md`
+  §Issues Surfaced #4-#7
+  (REQ-CH-01..04, the two-pump deadlock);
+  `/workspace/@alkdev/alknet/docs/research/stream-unification/findings.md` — the research that
   surfaced the pure-multiplexing resolution