Two lifecycle holes the registry and the consumer helper left open.
`AdapterRegistrationHandle.replace` had no liveness guard: after the handle's
disposer ran, a replace put routes back into the registry with nothing left to
release them, so the adapter leaked permanently. `owned` being empty cannot
carry that fact, because `replace([])` is the legal empty-section state, so the
disposer records it explicitly.
`installSettingsSection`'s watcher lacked the guard its own disposer carries:
a stored change landing while the consumer unloads reached `onChange`, which
re-registers routes against a fiber whose resources are being released.
Also documents `withFileLock` in the atomic-write README (it claimed one
export), records the age-based lock takeover as a known limitation, and lists
ctx.settings and ctx.credentials in the architecture capability table.
Keep only groups with another path in the active round. This bounds skewed sampling by paths visited instead of rescanning every singleton for every late-group item.
The web_search execute result and searchMetaFromValue each spread the
same {url, title?, snippet?, publishedAt?} projection over a seam source,
which the duplication gate flags as a clone. Extract projectSource, typed
on the seam's WebSearchSource, so both sites carry a byte-identical shape
from one definition.
renderFetchOutput has no external consumer: only formatFetchOutput and
fetchMetaFromValue call it, both through the registry, which deep-freezes
the result value. Exporting it let a hypothetical caller mutate a cached
input or the returned RenderedFetch and desync the card's truncated flag
from the model text. Drop it from the barrel and document that the memo
needs no defensive copy because every caller is internal and read-only.
Rewrite the Agent Note's stale 'TUI has no web arm' claim to match the
web fallback branch this PR added to transcript.ts. Replace the hardcoded
line-number comment with a symbolic reference, and mark the web arm's
unreachable optional-chain undefined side with a reasoned v8 ignore for
the per-file 100% branch gate.