perf(desktop): keep the member roster off the channel-switch path - #6456

One conflict, in `desktop/src/features/messages/lib/useMentions.ts`.
`block#6456` replaced the inline member-pubkey Set with `channelMemberPubkeySet`,
an identity-cached derivation shared with the timeline, and declared it
about fifty lines below where this branch declares the same variable.

Taking main's block verbatim would have left `memberPubkeys` read before it
is declared, so main's implementation was adopted at this branch's
declaration site instead. The two derivations are semantically identical —
both map `normalizePubkey` over the roster into a Set — so this is main's
caching with this branch's ordering, and main's duplicate declaration is
dropped.

`normalizePubkeySet` stays imported: it still backs the managed-agent set,
which is not roster-derived.

Signed-off-by: cyberzero000 <[email protected]>

* origin/main: (65 commits)
  fix(composer): preserve caret when inserting mentions mid-message (#6531)
  chore(deps): update rust crate async-trait to v0.1.92 (#6094)
  chore(deps): update dependency sonner to v2.0.8 (#6093)
  chore(deps): update rust crate http-body-util to v0.1.4 (#5452)
  chore(deps): update rust crate http to v1.4.2 (#5451)
  chore(deps): update rust crate futures-util to v0.3.33 (#5448)
  chore(deps): update rust crate futures to v0.3.33 (#5445)
  chore(deps): update dependency @tauri-apps/api to v2.11.1 (#5444)
  chore(deps): update ubuntu:24.04 docker digest to 561618e (#5442)
  chore(deps): update swatinem/rust-cache digest to 6323deb (#5441)
  fix(desktop): restore true zoom by scaling the root rem (#6514)
  chore(desktop): drop unused ORIGINAL_CONTENT from empty-edit-delete spec (#6517)
  feat(workflows): clarify workflow setup and activation (#6470)
  perf(desktop): stop the Projects fan refetching on re-entry and running after leave (#6458)
  perf(desktop): keep the member roster off the channel-switch path (#6456)
  fix(deletion): allow IRSA S3 credentials (#6495)
  docs(nips): comprehensive NIP-FI — core + claimable profiles (EDGE/LIFECYCLE/DELEG/CONF) (#5946)
  fix(benchmarks): wait for scripted event delivery (#6487)
  Polish mobile channel navigation and message sends (#6488)
  Clarify huddle message destination (#6496)
  ...

Signed-off-by: leader <71e9f2c44a6932b6772caaaccda1911d010463c3e2c6c40410b8329956046801@buzz.block.builderlab.xyz>

Co-authored-by: Tom Brow <[email protected]>
Signed-off-by: Tom Brow <[email protected]>

…ifications-pr

* origin/main: (38 commits)
  fix(composer): preserve caret when inserting mentions mid-message (#6531)
  chore(deps): update rust crate async-trait to v0.1.92 (#6094)
  chore(deps): update dependency sonner to v2.0.8 (#6093)
  chore(deps): update rust crate http-body-util to v0.1.4 (#5452)
  chore(deps): update rust crate http to v1.4.2 (#5451)
  chore(deps): update rust crate futures-util to v0.3.33 (#5448)
  chore(deps): update rust crate futures to v0.3.33 (#5445)
  chore(deps): update dependency @tauri-apps/api to v2.11.1 (#5444)
  chore(deps): update ubuntu:24.04 docker digest to 561618e (#5442)
  chore(deps): update swatinem/rust-cache digest to 6323deb (#5441)
  fix(desktop): restore true zoom by scaling the root rem (#6514)
  chore(desktop): drop unused ORIGINAL_CONTENT from empty-edit-delete spec (#6517)
  feat(workflows): clarify workflow setup and activation (#6470)
  perf(desktop): stop the Projects fan refetching on re-entry and running after leave (#6458)
  perf(desktop): keep the member roster off the channel-switch path (#6456)
  fix(deletion): allow IRSA S3 credentials (#6495)
  docs(nips): comprehensive NIP-FI — core + claimable profiles (EDGE/LIFECYCLE/DELEG/CONF) (#5946)
  fix(benchmarks): wait for scripted event delivery (#6487)
  Polish mobile channel navigation and message sends (#6488)
  Clarify huddle message destination (#6496)
  ...

Signed-off-by: Tom Brow <[email protected]>

…ake-fix

* origin/main: (33 commits)
  perf(desktop): make the Projects surface render-cheap (#6460)
  refactor(acp): clarify agent prompt sections (#6501)
  Add mobile Huddles voice MVP (#6056)
  feat(desktop-messages): keep agents addressed across messages (#6315)
  fix(desktop): remove Buzz entity link previews (#6512)
  fix(composer): preserve caret when inserting mentions mid-message (#6531)
  chore(deps): update rust crate async-trait to v0.1.92 (#6094)
  chore(deps): update dependency sonner to v2.0.8 (#6093)
  chore(deps): update rust crate http-body-util to v0.1.4 (#5452)
  chore(deps): update rust crate http to v1.4.2 (#5451)
  chore(deps): update rust crate futures-util to v0.3.33 (#5448)
  chore(deps): update rust crate futures to v0.3.33 (#5445)
  chore(deps): update dependency @tauri-apps/api to v2.11.1 (#5444)
  chore(deps): update ubuntu:24.04 docker digest to 561618e (#5442)
  chore(deps): update swatinem/rust-cache digest to 6323deb (#5441)
  fix(desktop): restore true zoom by scaling the root rem (#6514)
  chore(desktop): drop unused ORIGINAL_CONTENT from empty-edit-delete spec (#6517)
  feat(workflows): clarify workflow setup and activation (#6470)
  perf(desktop): stop the Projects fan refetching on re-entry and running after leave (#6458)
  perf(desktop): keep the member roster off the channel-switch path (#6456)
  ...

Signed-off-by: Duncan <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>

…ock#6456)

Switching channels triggered a full-roster fetch (kind:39002 plus a
kind:0 profile batch with every member pubkey as an author) in the
common case, and several render paths walked the full roster per render.
None of this scales past a few hundred members; the product target is
10k+.

- **Members query staleTime 30s → 5min.** Every membership change the
client can observe already invalidates the key explicitly: live
join/leave system messages for the active channel, member-added/removed
notifications for the current identity, and all membership mutations —
including previously-uncovered direct write paths (moderation kick,
agent-deletion cleanup), which now invalidate through a shared helper.
The 30s window bought correctness we already had and charged a roster
fetch per switch.
- **ChannelMembersBar no longer mounts the roster query for non-DM
channels** — the count renders from the channel summary, and the
private-channel huddle gate accepts `channel.isMember` (derived from the
same kind:39002 event as the roster's self entry).
- **Roster-derived lookups are cached on roster identity**
(`rosterDerivations.ts`): role map, agent-member subset, member/bot
pubkey sets. These were rebuilt O(members) on every live message /
profile re-key. React Query's structural sharing keeps the roster
identity stable, so each derivation computes once per distinct roster.
- **Backend: the kind:0 profile join in `get_channel_members` is capped
at the first 500 members** (roster order). Members past the cap keep
`display_name: None` (UI falls back to pubkey labels and profile
caches); `role=="bot"` agent flags are roster-derived and unaffected.
Full roster pagination is the structural follow-up.
- **Composer keystroke path**: `useCanAddChannelMembers` re-scanned
channels + roster per keystroke; now memoized on data identities,
sharing the cached pubkey set.

### Measured / estimated impact

| metric | before | after |
|---|---|---|
| roster fetches while switching (live trace) | nearly every switch | ≤1
per channel per 5 min |
| roster fetch cost on the wire (live, 51-member channel) | 273ms per
fetch | amortized away |
| kind:0 `authors` filter size at 10k members | ~670KB per request (~67
B/pubkey) | capped at 500 authors (~34KB) |
| warm-switch longtask at 10k members (mock harness, 4× throttle) |
364ms | 318ms |
| per-render roster walks (role map, agent sets) at 10k members |
O(members) per live message | once per distinct roster |

Deferred deliberately: protocol-level roster pagination and removing
`memberPubkeys` from channel summaries (needs relay support).

---------

Signed-off-by: Max Lampert <[email protected]>

… sends (#6572)

## Summary

Lands the build-now items from the desktop latency plan
(#ui-performance-deep-dive) as one change. Every perceived-latency hot
path a user hits on launch, channel open, thread open, and reply send
drops one or more round trips.

**A1 — persisted channel heads (the big one).** Native WAL SQLite cache
(`desktop/src-tauri/src/channel_head_cache.rs`) keyed by `{pubkey,
relayUrl}` scope, 32 rows/scope LRU, 1 MiB per-row drop cap,
schema-version reset, corrupt-row tolerance, checkpointed on shutdown.
Three blocking-pool commands: `channel_head_cache_load` / `_store` /
`_clear`. On the renderer side, `CommunityQueryProvider` kicks off
hydration of up to 12 heads when it constructs the query client — the
app, splash and relay preconnect mount immediately; only
`useChannelMessagesQuery` awaits the seed (`channelHeadHydration`), then
consumes a one-shot hydrated gate so a hydrated channel pays **zero**
`get_channel_window` calls on mount and exactly **one** on the
post-subscription refresh, whose response replaces page zero wholesale.
That refresh fires whether live-subscription setup succeeds or fails,
and is sequenced behind hydration so it is always a distinct
authoritative fetch (see Review follow-ups). Bounds-only persisted heads
(zero rows) are not hydrated and take the cold loading path. The
timeline loading latch recognizes native-hydrated rows as restart-safe
so they paint immediately instead of holding a skeleton. The cache is a
paint accelerator only — the relay response is always authoritative.
Replaces the legacy localStorage `messageSnapshot.ts` (removed, -401
lines).

Kill switch: `VITE_BUZZ_CHANNEL_HEAD_CACHE=off` at build time or
`localStorage["buzz-channel-head-cache"] = "off"` at runtime. Cache is
cleared on community removal and scoped per identity, so a replaced
signer never sees the previous identity's rows.

**B1 — thread aux in one response.** Relay thread filters accept
`include_aux`; the bridge appends the same authorized two-hop
reactions/edits/deletions closure a channel window gets
(`build_aux_query` shared with the window path). Renderer
`useThreadReplies` drops its two follow-up aux fetches. `next_cursor` is
computed from reply-kind rows only since aux rows are unpaged.
Documented in `docs/bridge-channel-window.md`. Thread queries keep
`staleTime: 0` (`bcfe04e2f`): an earlier revision raised it to 30s,
which CI's `thread-unread.spec.ts` caught — once the user leaves a
channel, the live subscription stops feeding that thread's cache, so a
reopen must always take the (now single) authoritative read.

**B2 — cached root on reply send.** `send_channel_message` gains
`root_event_id`; when the renderer already holds the parent (channel or
thread cache) it passes the NIP-10 root, and native signs without the
relay round trip that `resolve_thread_ref` used to make. Strict hex
parse; `root_event_id` requires `parent_event_id`; absent root falls
back to the existing relay resolution. The renderer never sends a
guessed root.

**B4** general HTTP pool idle 10s→300s, max idle per host 1→2. **B5**
relay preconnect fires as soon as identity is ready instead of waiting
for `requestIdleCallback`. One e2e test (`relay-reconnect.spec.ts`
"service restart close resets accumulated backoff") had been relying on
the idle-callback batching to skip past its own seeded dial failures
before the channel list painted; `8133d70bb` makes it wait for the
connected state instead (test-only, still fails with the 1012 backoff
reset disabled). **B6** profile freshness 60s→10 min (both the in-memory
entry check and the query `staleTime`). Tradeoff: another user's
display-name/avatar edit can take up to 10 min to propagate to a client
that already holds their profile (relay reconnect refetches
`users-batch` but resolves from the still-fresh per-pubkey entry); your
own edits still evict the entry immediately (`evictUsersBatchEntries` in
`useUpdateProfileMutation`).

### Related issue
Follows #6456/#6457/#6459/#6460 (already merged). #6455 is the
measurement instrument and is intentionally not folded in. No duplicate
PR found.

### Review follow-ups
Addressing Carl's reviews
[5001114109](#6572 (review))
and
[5002596542](#6572 (review)),
each pushed as new commits (no rebase):

- `4f06b7770` fix(desktop): mount app while channel heads hydrate;
always revalidate — provider no longer gates children on the cache load;
`refreshAfterSubscribe` runs on subscribe failure too; bounds-only heads
skipped at seed; seed merges into an existing window store. +3 tests.
- `35834cb31` fix(relay): drain aux closure hops across the page clamp —
`query_all_pages` walks the `(created_at, id)` keyset via
`until`/`before_id` until a short page (`AUX_PAGE_LIMIT` =
`DEFAULT_MAX_PAGE_LIMIT`, `AUX_MAX_PAGES` = 64 warn+truncate) so
one-shot `limit: 1000` newest-first no longer drops the oldest
edits/deletions. +3 tests; `docs/bridge-channel-window.md` updated.
- `db21b0531` merge of `origin/main` `e23632941` (#6558, #6312 — no
overlap).
- `5a5566c0f` fix(desktop): sequence post-subscribe refresh behind
channel head hydration — `refreshChannelWindowMessages` awaits
`channelHeadHydration()` and, for a hydration-seeded query (`data !==
undefined && dataUpdatedAt === 0`), the in-flight snapshot fetch before
invalidating. Without this, a subscription that settles before the
SQLite load invalidated a data-less in-flight query; TanStack dedupes
that onto the existing fetch (`query-core` `fetch()` only cancels when
`state.data` exists), which returned the seeded snapshot — 0
authoritative fetches. Regression test reproduces Carl's exact ordering
(fails at `35834cb31` with 0 calls), plus a cold-channel guard that the
fix does not double-fetch.
- `b129231c8` fix(desktop): let concurrent post-hydration refreshes
share one window fetch — found independently by Max and Wren reviewing
`5a5566c0f`: subscribe settlement + reconnect both wake on the same
snapshot promise and both invalidate; the second (default
`cancelRefetch: true`) cancelled and replaced the first authoritative
fetch (3 queryFn calls, not 2, and the cancelled Tauri invoke still hits
the relay). The seeded branch now invalidates with `cancelRefetch:
false` so a second waker joins the in-flight fetch; cold/warm keep the
default (`test_canceled_stale_fetch_cannot_overwrite_catch_up_window`
relies on it). Concurrent regression test fails at `5a5566c0f` with 3.

### Testing
At `b129231c8` (PR head; verified in one shell with `git rev-parse HEAD`
= `b129231c8`): `pnpm check`, `tsc --noEmit`, desktop unit 5,393 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `5a5566c0f`: `pnpm check`, `tsc --noEmit`, desktop unit 5,392 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `35834cb31`: desktop unit 5,390 / 0; `cargo test -p buzz-relay --lib`
910 / 0; fmt + clippy `-D warnings` clean; Playwright 32 / 32 (same
specs minus affordance); GitHub CI green on every job except Smoke (3)
(unrelated project-review row-count + messaging timing flake, per Carl)
and Unit Tests (sherpa cache skeleton, below).

Earlier, all at `8133d70bb` (this PR head is `0c492366d` = 8133d70 + a
comments-only commit correcting two `profile/hooks.ts` freshness
comments from 60s to 10 min; pre-push desktop check/typecheck/test
5,387/0 re-ran at 0c49236) in one shell; `origin/main` = `040b203f7`
at PR open, since moved to `4baccd539` (#6558, mobile only — zero file
overlap, `git merge-tree` clean):

- `just desktop-test` — 5,387 passed / 0 failed (includes new hook-level
call-count test: cold = 1, stale-prefetched = 1, hydrated = 0 on mount
then 1 on invalidate with wholesale replacement)
- Playwright smoke `relay-reconnect.spec.ts` + `thread-unread.spec.ts` +
`channel-head-restart.spec.ts` — 30/30 (thread-unread was 8/13 at
`7acbf951b`; relay-reconnect was 15/16 at `bcfe04e2f`). The restart spec
persists a head, reloads into a fresh mock relay with the head fetch
held 5s, asserts the persisted row paints within 2s, exactly one
`get_channel_window` after open, and the stale row is removed when the
authoritative page lands.
- `pnpm typecheck`, `pnpm check` — clean

At `7acbf951b` (everything except the two-line `useThreadReplies.ts`
staleTime revert and the test-only `relay-reconnect.spec.ts` change),
also green in one shell:
- `just desktop-tauri-test` — 2,859 passed / 0 failed across the
workspace (channel_head_cache: wire shape, LRU+caps, schema reset,
corrupt-row skip)
- `just test-unit` — 632 passed (buzz-core/auth); `cargo test -p
buzz-relay --lib` — 908 passed / 0 failed
- `just check` components: fmt-check, clippy, desktop-check,
desktop-typecheck, desktop-tauri-fmt-check, desktop-tauri-clippy,
web-check, mobile-check, file-size-check — all green
- `just desktop-build`, `web-build`, `desktop-tauri-check`,
`mobile-test` (1,661 passed) — all green

CI note: the "Unit Tests" job goes red on this PR and on `main` whenever
it hits a poisoned `rust-cache` entry (an empty-directory skeleton of
`target/sherpa-onnx-prebuilt` that `sherpa-onnx-sys` build.rs trusts),
surfacing as `could not find native static library sherpa-onnx-c-api` in
`buzz-voice` — a crate this PR doesn't touch. Deleting the cache entry
and rerunning turned the job green at `0c492366d` (28/28); it re-poisons
on the next `main` push until the workflow clears that directory after
cache restore.

Reviewed in-channel by Wren (9 / 9 / 9.5) and Eva (9 / 9 / 9), and
line-by-line by me before opening; the staleTime fix re-verified by Wren
and me independently; the relay-reconnect test fix bisected and verified
by me.

---------

Signed-off-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Signed-off-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Signed-off-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Signed-off-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>
Co-authored-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Co-authored-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Co-authored-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Co-authored-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>

… sends (#6572)

Lands the build-now items from the desktop latency plan
(#ui-performance-deep-dive) as one change. Every perceived-latency hot
path a user hits on launch, channel open, thread open, and reply send
drops one or more round trips.

**A1 — persisted channel heads (the big one).** Native WAL SQLite cache
(`desktop/src-tauri/src/channel_head_cache.rs`) keyed by `{pubkey,
relayUrl}` scope, 32 rows/scope LRU, 1 MiB per-row drop cap,
schema-version reset, corrupt-row tolerance, checkpointed on shutdown.
Three blocking-pool commands: `channel_head_cache_load` / `_store` /
`_clear`. On the renderer side, `CommunityQueryProvider` kicks off
hydration of up to 12 heads when it constructs the query client — the
app, splash and relay preconnect mount immediately; only
`useChannelMessagesQuery` awaits the seed (`channelHeadHydration`), then
consumes a one-shot hydrated gate so a hydrated channel pays **zero**
`get_channel_window` calls on mount and exactly **one** on the
post-subscription refresh, whose response replaces page zero wholesale.
That refresh fires whether live-subscription setup succeeds or fails,
and is sequenced behind hydration so it is always a distinct
authoritative fetch (see Review follow-ups). Bounds-only persisted heads
(zero rows) are not hydrated and take the cold loading path. The
timeline loading latch recognizes native-hydrated rows as restart-safe
so they paint immediately instead of holding a skeleton. The cache is a
paint accelerator only — the relay response is always authoritative.
Replaces the legacy localStorage `messageSnapshot.ts` (removed, -401
lines).

Kill switch: `VITE_BUZZ_CHANNEL_HEAD_CACHE=off` at build time or
`localStorage["buzz-channel-head-cache"] = "off"` at runtime. Cache is
cleared on community removal and scoped per identity, so a replaced
signer never sees the previous identity's rows.

**B1 — thread aux in one response.** Relay thread filters accept
`include_aux`; the bridge appends the same authorized two-hop
reactions/edits/deletions closure a channel window gets
(`build_aux_query` shared with the window path). Renderer
`useThreadReplies` drops its two follow-up aux fetches. `next_cursor` is
computed from reply-kind rows only since aux rows are unpaged.
Documented in `docs/bridge-channel-window.md`. Thread queries keep
`staleTime: 0` (`bcfe04e2f`): an earlier revision raised it to 30s,
which CI's `thread-unread.spec.ts` caught — once the user leaves a
channel, the live subscription stops feeding that thread's cache, so a
reopen must always take the (now single) authoritative read.

**B2 — cached root on reply send.** `send_channel_message` gains
`root_event_id`; when the renderer already holds the parent (channel or
thread cache) it passes the NIP-10 root, and native signs without the
relay round trip that `resolve_thread_ref` used to make. Strict hex
parse; `root_event_id` requires `parent_event_id`; absent root falls
back to the existing relay resolution. The renderer never sends a
guessed root.

**B4** general HTTP pool idle 10s→300s, max idle per host 1→2. **B5**
relay preconnect fires as soon as identity is ready instead of waiting
for `requestIdleCallback`. One e2e test (`relay-reconnect.spec.ts`
"service restart close resets accumulated backoff") had been relying on
the idle-callback batching to skip past its own seeded dial failures
before the channel list painted; `8133d70bb` makes it wait for the
connected state instead (test-only, still fails with the 1012 backoff
reset disabled). **B6** profile freshness 60s→10 min (both the in-memory
entry check and the query `staleTime`). Tradeoff: another user's
display-name/avatar edit can take up to 10 min to propagate to a client
that already holds their profile (relay reconnect refetches
`users-batch` but resolves from the still-fresh per-pubkey entry); your
own edits still evict the entry immediately (`evictUsersBatchEntries` in
`useUpdateProfileMutation`).

Follows #6456/#6457/#6459/#6460 (already merged). #6455 is the
measurement instrument and is intentionally not folded in. No duplicate
PR found.

Addressing Carl's reviews
[5001114109](#6572 (review))
and
[5002596542](#6572 (review)),
each pushed as new commits (no rebase):

- `4f06b7770` fix(desktop): mount app while channel heads hydrate;
always revalidate — provider no longer gates children on the cache load;
`refreshAfterSubscribe` runs on subscribe failure too; bounds-only heads
skipped at seed; seed merges into an existing window store. +3 tests.
- `35834cb31` fix(relay): drain aux closure hops across the page clamp —
`query_all_pages` walks the `(created_at, id)` keyset via
`until`/`before_id` until a short page (`AUX_PAGE_LIMIT` =
`DEFAULT_MAX_PAGE_LIMIT`, `AUX_MAX_PAGES` = 64 warn+truncate) so
one-shot `limit: 1000` newest-first no longer drops the oldest
edits/deletions. +3 tests; `docs/bridge-channel-window.md` updated.
- `db21b0531` merge of `origin/main` `e23632941` (#6558, #6312 — no
overlap).
- `5a5566c0f` fix(desktop): sequence post-subscribe refresh behind
channel head hydration — `refreshChannelWindowMessages` awaits
`channelHeadHydration()` and, for a hydration-seeded query (`data !==
undefined && dataUpdatedAt === 0`), the in-flight snapshot fetch before
invalidating. Without this, a subscription that settles before the
SQLite load invalidated a data-less in-flight query; TanStack dedupes
that onto the existing fetch (`query-core` `fetch()` only cancels when
`state.data` exists), which returned the seeded snapshot — 0
authoritative fetches. Regression test reproduces Carl's exact ordering
(fails at `35834cb31` with 0 calls), plus a cold-channel guard that the
fix does not double-fetch.
- `b129231c8` fix(desktop): let concurrent post-hydration refreshes
share one window fetch — found independently by Max and Wren reviewing
`5a5566c0f`: subscribe settlement + reconnect both wake on the same
snapshot promise and both invalidate; the second (default
`cancelRefetch: true`) cancelled and replaced the first authoritative
fetch (3 queryFn calls, not 2, and the cancelled Tauri invoke still hits
the relay). The seeded branch now invalidates with `cancelRefetch:
false` so a second waker joins the in-flight fetch; cold/warm keep the
default (`test_canceled_stale_fetch_cannot_overwrite_catch_up_window`
relies on it). Concurrent regression test fails at `5a5566c0f` with 3.

At `b129231c8` (PR head; verified in one shell with `git rev-parse HEAD`
= `b129231c8`): `pnpm check`, `tsc --noEmit`, desktop unit 5,393 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `5a5566c0f`: `pnpm check`, `tsc --noEmit`, desktop unit 5,392 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `35834cb31`: desktop unit 5,390 / 0; `cargo test -p buzz-relay --lib`
910 / 0; fmt + clippy `-D warnings` clean; Playwright 32 / 32 (same
specs minus affordance); GitHub CI green on every job except Smoke (3)
(unrelated project-review row-count + messaging timing flake, per Carl)
and Unit Tests (sherpa cache skeleton, below).

Earlier, all at `8133d70bb` (this PR head is `0c492366d` = 8133d70 + a
comments-only commit correcting two `profile/hooks.ts` freshness
comments from 60s to 10 min; pre-push desktop check/typecheck/test
5,387/0 re-ran at 0c49236) in one shell; `origin/main` = `040b203f7`
at PR open, since moved to `4baccd539` (#6558, mobile only — zero file
overlap, `git merge-tree` clean):

- `just desktop-test` — 5,387 passed / 0 failed (includes new hook-level
call-count test: cold = 1, stale-prefetched = 1, hydrated = 0 on mount
then 1 on invalidate with wholesale replacement)
- Playwright smoke `relay-reconnect.spec.ts` + `thread-unread.spec.ts` +
`channel-head-restart.spec.ts` — 30/30 (thread-unread was 8/13 at
`7acbf951b`; relay-reconnect was 15/16 at `bcfe04e2f`). The restart spec
persists a head, reloads into a fresh mock relay with the head fetch
held 5s, asserts the persisted row paints within 2s, exactly one
`get_channel_window` after open, and the stale row is removed when the
authoritative page lands.
- `pnpm typecheck`, `pnpm check` — clean

At `7acbf951b` (everything except the two-line `useThreadReplies.ts`
staleTime revert and the test-only `relay-reconnect.spec.ts` change),
also green in one shell:
- `just desktop-tauri-test` — 2,859 passed / 0 failed across the
workspace (channel_head_cache: wire shape, LRU+caps, schema reset,
corrupt-row skip)
- `just test-unit` — 632 passed (buzz-core/auth); `cargo test -p
buzz-relay --lib` — 908 passed / 0 failed
- `just check` components: fmt-check, clippy, desktop-check,
desktop-typecheck, desktop-tauri-fmt-check, desktop-tauri-clippy,
web-check, mobile-check, file-size-check — all green
- `just desktop-build`, `web-build`, `desktop-tauri-check`,
`mobile-test` (1,661 passed) — all green

CI note: the "Unit Tests" job goes red on this PR and on `main` whenever
it hits a poisoned `rust-cache` entry (an empty-directory skeleton of
`target/sherpa-onnx-prebuilt` that `sherpa-onnx-sys` build.rs trusts),
surfacing as `could not find native static library sherpa-onnx-c-api` in
`buzz-voice` — a crate this PR doesn't touch. Deleting the cache entry
and rerunning turned the job green at `0c492366d` (28/28); it re-poisons
on the next `main` push until the workflow clears that directory after
cache restore.

Reviewed in-channel by Wren (9 / 9 / 9.5) and Eva (9 / 9 / 9), and
line-by-line by me before opening; the staleTime fix re-verified by Wren
and me independently; the relay-reconnect test fix bisected and verified
by me.

---------

Signed-off-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Signed-off-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Signed-off-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Signed-off-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>
Co-authored-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Co-authored-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Co-authored-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Co-authored-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>

… sends (#6572)

Lands the build-now items from the desktop latency plan
(#ui-performance-deep-dive) as one change. Every perceived-latency hot
path a user hits on launch, channel open, thread open, and reply send
drops one or more round trips.

**A1 — persisted channel heads (the big one).** Native WAL SQLite cache
(`desktop/src-tauri/src/channel_head_cache.rs`) keyed by `{pubkey,
relayUrl}` scope, 32 rows/scope LRU, 1 MiB per-row drop cap,
schema-version reset, corrupt-row tolerance, checkpointed on shutdown.
Three blocking-pool commands: `channel_head_cache_load` / `_store` /
`_clear`. On the renderer side, `CommunityQueryProvider` kicks off
hydration of up to 12 heads when it constructs the query client — the
app, splash and relay preconnect mount immediately; only
`useChannelMessagesQuery` awaits the seed (`channelHeadHydration`), then
consumes a one-shot hydrated gate so a hydrated channel pays **zero**
`get_channel_window` calls on mount and exactly **one** on the
post-subscription refresh, whose response replaces page zero wholesale.
That refresh fires whether live-subscription setup succeeds or fails,
and is sequenced behind hydration so it is always a distinct
authoritative fetch (see Review follow-ups). Bounds-only persisted heads
(zero rows) are not hydrated and take the cold loading path. The
timeline loading latch recognizes native-hydrated rows as restart-safe
so they paint immediately instead of holding a skeleton. The cache is a
paint accelerator only — the relay response is always authoritative.
Replaces the legacy localStorage `messageSnapshot.ts` (removed, -401
lines).

Kill switch: `VITE_BUZZ_CHANNEL_HEAD_CACHE=off` at build time or
`localStorage["buzz-channel-head-cache"] = "off"` at runtime. Cache is
cleared on community removal and scoped per identity, so a replaced
signer never sees the previous identity's rows.

**B1 — thread aux in one response.** Relay thread filters accept
`include_aux`; the bridge appends the same authorized two-hop
reactions/edits/deletions closure a channel window gets
(`build_aux_query` shared with the window path). Renderer
`useThreadReplies` drops its two follow-up aux fetches. `next_cursor` is
computed from reply-kind rows only since aux rows are unpaged.
Documented in `docs/bridge-channel-window.md`. Thread queries keep
`staleTime: 0` (`bcfe04e2f`): an earlier revision raised it to 30s,
which CI's `thread-unread.spec.ts` caught — once the user leaves a
channel, the live subscription stops feeding that thread's cache, so a
reopen must always take the (now single) authoritative read.

**B2 — cached root on reply send.** `send_channel_message` gains
`root_event_id`; when the renderer already holds the parent (channel or
thread cache) it passes the NIP-10 root, and native signs without the
relay round trip that `resolve_thread_ref` used to make. Strict hex
parse; `root_event_id` requires `parent_event_id`; absent root falls
back to the existing relay resolution. The renderer never sends a
guessed root.

**B4** general HTTP pool idle 10s→300s, max idle per host 1→2. **B5**
relay preconnect fires as soon as identity is ready instead of waiting
for `requestIdleCallback`. One e2e test (`relay-reconnect.spec.ts`
"service restart close resets accumulated backoff") had been relying on
the idle-callback batching to skip past its own seeded dial failures
before the channel list painted; `8133d70bb` makes it wait for the
connected state instead (test-only, still fails with the 1012 backoff
reset disabled). **B6** profile freshness 60s→10 min (both the in-memory
entry check and the query `staleTime`). Tradeoff: another user's
display-name/avatar edit can take up to 10 min to propagate to a client
that already holds their profile (relay reconnect refetches
`users-batch` but resolves from the still-fresh per-pubkey entry); your
own edits still evict the entry immediately (`evictUsersBatchEntries` in
`useUpdateProfileMutation`).

Follows #6456/#6457/#6459/#6460 (already merged). #6455 is the
measurement instrument and is intentionally not folded in. No duplicate
PR found.

Addressing Carl's reviews
[5001114109](#6572 (review))
and
[5002596542](#6572 (review)),
each pushed as new commits (no rebase):

- `4f06b7770` fix(desktop): mount app while channel heads hydrate;
always revalidate — provider no longer gates children on the cache load;
`refreshAfterSubscribe` runs on subscribe failure too; bounds-only heads
skipped at seed; seed merges into an existing window store. +3 tests.
- `35834cb31` fix(relay): drain aux closure hops across the page clamp —
`query_all_pages` walks the `(created_at, id)` keyset via
`until`/`before_id` until a short page (`AUX_PAGE_LIMIT` =
`DEFAULT_MAX_PAGE_LIMIT`, `AUX_MAX_PAGES` = 64 warn+truncate) so
one-shot `limit: 1000` newest-first no longer drops the oldest
edits/deletions. +3 tests; `docs/bridge-channel-window.md` updated.
- `db21b0531` merge of `origin/main` `e23632941` (#6558, #6312 — no
overlap).
- `5a5566c0f` fix(desktop): sequence post-subscribe refresh behind
channel head hydration — `refreshChannelWindowMessages` awaits
`channelHeadHydration()` and, for a hydration-seeded query (`data !==
undefined && dataUpdatedAt === 0`), the in-flight snapshot fetch before
invalidating. Without this, a subscription that settles before the
SQLite load invalidated a data-less in-flight query; TanStack dedupes
that onto the existing fetch (`query-core` `fetch()` only cancels when
`state.data` exists), which returned the seeded snapshot — 0
authoritative fetches. Regression test reproduces Carl's exact ordering
(fails at `35834cb31` with 0 calls), plus a cold-channel guard that the
fix does not double-fetch.
- `b129231c8` fix(desktop): let concurrent post-hydration refreshes
share one window fetch — found independently by Max and Wren reviewing
`5a5566c0f`: subscribe settlement + reconnect both wake on the same
snapshot promise and both invalidate; the second (default
`cancelRefetch: true`) cancelled and replaced the first authoritative
fetch (3 queryFn calls, not 2, and the cancelled Tauri invoke still hits
the relay). The seeded branch now invalidates with `cancelRefetch:
false` so a second waker joins the in-flight fetch; cold/warm keep the
default (`test_canceled_stale_fetch_cannot_overwrite_catch_up_window`
relies on it). Concurrent regression test fails at `5a5566c0f` with 3.

At `b129231c8` (PR head; verified in one shell with `git rev-parse HEAD`
= `b129231c8`): `pnpm check`, `tsc --noEmit`, desktop unit 5,393 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `5a5566c0f`: `pnpm check`, `tsc --noEmit`, desktop unit 5,392 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `35834cb31`: desktop unit 5,390 / 0; `cargo test -p buzz-relay --lib`
910 / 0; fmt + clippy `-D warnings` clean; Playwright 32 / 32 (same
specs minus affordance); GitHub CI green on every job except Smoke (3)
(unrelated project-review row-count + messaging timing flake, per Carl)
and Unit Tests (sherpa cache skeleton, below).

Earlier, all at `8133d70bb` (this PR head is `0c492366d` = 8133d70 + a
comments-only commit correcting two `profile/hooks.ts` freshness
comments from 60s to 10 min; pre-push desktop check/typecheck/test
5,387/0 re-ran at 0c49236) in one shell; `origin/main` = `040b203f7`
at PR open, since moved to `4baccd539` (#6558, mobile only — zero file
overlap, `git merge-tree` clean):

- `just desktop-test` — 5,387 passed / 0 failed (includes new hook-level
call-count test: cold = 1, stale-prefetched = 1, hydrated = 0 on mount
then 1 on invalidate with wholesale replacement)
- Playwright smoke `relay-reconnect.spec.ts` + `thread-unread.spec.ts` +
`channel-head-restart.spec.ts` — 30/30 (thread-unread was 8/13 at
`7acbf951b`; relay-reconnect was 15/16 at `bcfe04e2f`). The restart spec
persists a head, reloads into a fresh mock relay with the head fetch
held 5s, asserts the persisted row paints within 2s, exactly one
`get_channel_window` after open, and the stale row is removed when the
authoritative page lands.
- `pnpm typecheck`, `pnpm check` — clean

At `7acbf951b` (everything except the two-line `useThreadReplies.ts`
staleTime revert and the test-only `relay-reconnect.spec.ts` change),
also green in one shell:
- `just desktop-tauri-test` — 2,859 passed / 0 failed across the
workspace (channel_head_cache: wire shape, LRU+caps, schema reset,
corrupt-row skip)
- `just test-unit` — 632 passed (buzz-core/auth); `cargo test -p
buzz-relay --lib` — 908 passed / 0 failed
- `just check` components: fmt-check, clippy, desktop-check,
desktop-typecheck, desktop-tauri-fmt-check, desktop-tauri-clippy,
web-check, mobile-check, file-size-check — all green
- `just desktop-build`, `web-build`, `desktop-tauri-check`,
`mobile-test` (1,661 passed) — all green

CI note: the "Unit Tests" job goes red on this PR and on `main` whenever
it hits a poisoned `rust-cache` entry (an empty-directory skeleton of
`target/sherpa-onnx-prebuilt` that `sherpa-onnx-sys` build.rs trusts),
surfacing as `could not find native static library sherpa-onnx-c-api` in
`buzz-voice` — a crate this PR doesn't touch. Deleting the cache entry
and rerunning turned the job green at `0c492366d` (28/28); it re-poisons
on the next `main` push until the workflow clears that directory after
cache restore.

Reviewed in-channel by Wren (9 / 9 / 9.5) and Eva (9 / 9 / 9), and
line-by-line by me before opening; the staleTime fix re-verified by Wren
and me independently; the relay-reconnect test fix bisected and verified
by me.

---------

Signed-off-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Signed-off-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Signed-off-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Signed-off-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>
Co-authored-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Co-authored-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Co-authored-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Co-authored-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>

… sends (#6572)

Lands the build-now items from the desktop latency plan
(#ui-performance-deep-dive) as one change. Every perceived-latency hot
path a user hits on launch, channel open, thread open, and reply send
drops one or more round trips.

**A1 — persisted channel heads (the big one).** Native WAL SQLite cache
(`desktop/src-tauri/src/channel_head_cache.rs`) keyed by `{pubkey,
relayUrl}` scope, 32 rows/scope LRU, 1 MiB per-row drop cap,
schema-version reset, corrupt-row tolerance, checkpointed on shutdown.
Three blocking-pool commands: `channel_head_cache_load` / `_store` /
`_clear`. On the renderer side, `CommunityQueryProvider` kicks off
hydration of up to 12 heads when it constructs the query client — the
app, splash and relay preconnect mount immediately; only
`useChannelMessagesQuery` awaits the seed (`channelHeadHydration`), then
consumes a one-shot hydrated gate so a hydrated channel pays **zero**
`get_channel_window` calls on mount and exactly **one** on the
post-subscription refresh, whose response replaces page zero wholesale.
That refresh fires whether live-subscription setup succeeds or fails,
and is sequenced behind hydration so it is always a distinct
authoritative fetch (see Review follow-ups). Bounds-only persisted heads
(zero rows) are not hydrated and take the cold loading path. The
timeline loading latch recognizes native-hydrated rows as restart-safe
so they paint immediately instead of holding a skeleton. The cache is a
paint accelerator only — the relay response is always authoritative.
Replaces the legacy localStorage `messageSnapshot.ts` (removed, -401
lines).

Kill switch: `VITE_BUZZ_CHANNEL_HEAD_CACHE=off` at build time or
`localStorage["buzz-channel-head-cache"] = "off"` at runtime. Cache is
cleared on community removal and scoped per identity, so a replaced
signer never sees the previous identity's rows.

**B1 — thread aux in one response.** Relay thread filters accept
`include_aux`; the bridge appends the same authorized two-hop
reactions/edits/deletions closure a channel window gets
(`build_aux_query` shared with the window path). Renderer
`useThreadReplies` drops its two follow-up aux fetches. `next_cursor` is
computed from reply-kind rows only since aux rows are unpaged.
Documented in `docs/bridge-channel-window.md`. Thread queries keep
`staleTime: 0` (`bcfe04e2f`): an earlier revision raised it to 30s,
which CI's `thread-unread.spec.ts` caught — once the user leaves a
channel, the live subscription stops feeding that thread's cache, so a
reopen must always take the (now single) authoritative read.

**B2 — cached root on reply send.** `send_channel_message` gains
`root_event_id`; when the renderer already holds the parent (channel or
thread cache) it passes the NIP-10 root, and native signs without the
relay round trip that `resolve_thread_ref` used to make. Strict hex
parse; `root_event_id` requires `parent_event_id`; absent root falls
back to the existing relay resolution. The renderer never sends a
guessed root.

**B4** general HTTP pool idle 10s→300s, max idle per host 1→2. **B5**
relay preconnect fires as soon as identity is ready instead of waiting
for `requestIdleCallback`. One e2e test (`relay-reconnect.spec.ts`
"service restart close resets accumulated backoff") had been relying on
the idle-callback batching to skip past its own seeded dial failures
before the channel list painted; `8133d70bb` makes it wait for the
connected state instead (test-only, still fails with the 1012 backoff
reset disabled). **B6** profile freshness 60s→10 min (both the in-memory
entry check and the query `staleTime`). Tradeoff: another user's
display-name/avatar edit can take up to 10 min to propagate to a client
that already holds their profile (relay reconnect refetches
`users-batch` but resolves from the still-fresh per-pubkey entry); your
own edits still evict the entry immediately (`evictUsersBatchEntries` in
`useUpdateProfileMutation`).

Follows #6456/#6457/#6459/#6460 (already merged). #6455 is the
measurement instrument and is intentionally not folded in. No duplicate
PR found.

Addressing Carl's reviews
[5001114109](#6572 (review))
and
[5002596542](#6572 (review)),
each pushed as new commits (no rebase):

- `4f06b7770` fix(desktop): mount app while channel heads hydrate;
always revalidate — provider no longer gates children on the cache load;
`refreshAfterSubscribe` runs on subscribe failure too; bounds-only heads
skipped at seed; seed merges into an existing window store. +3 tests.
- `35834cb31` fix(relay): drain aux closure hops across the page clamp —
`query_all_pages` walks the `(created_at, id)` keyset via
`until`/`before_id` until a short page (`AUX_PAGE_LIMIT` =
`DEFAULT_MAX_PAGE_LIMIT`, `AUX_MAX_PAGES` = 64 warn+truncate) so
one-shot `limit: 1000` newest-first no longer drops the oldest
edits/deletions. +3 tests; `docs/bridge-channel-window.md` updated.
- `db21b0531` merge of `origin/main` `e23632941` (#6558, #6312 — no
overlap).
- `5a5566c0f` fix(desktop): sequence post-subscribe refresh behind
channel head hydration — `refreshChannelWindowMessages` awaits
`channelHeadHydration()` and, for a hydration-seeded query (`data !==
undefined && dataUpdatedAt === 0`), the in-flight snapshot fetch before
invalidating. Without this, a subscription that settles before the
SQLite load invalidated a data-less in-flight query; TanStack dedupes
that onto the existing fetch (`query-core` `fetch()` only cancels when
`state.data` exists), which returned the seeded snapshot — 0
authoritative fetches. Regression test reproduces Carl's exact ordering
(fails at `35834cb31` with 0 calls), plus a cold-channel guard that the
fix does not double-fetch.
- `b129231c8` fix(desktop): let concurrent post-hydration refreshes
share one window fetch — found independently by Max and Wren reviewing
`5a5566c0f`: subscribe settlement + reconnect both wake on the same
snapshot promise and both invalidate; the second (default
`cancelRefetch: true`) cancelled and replaced the first authoritative
fetch (3 queryFn calls, not 2, and the cancelled Tauri invoke still hits
the relay). The seeded branch now invalidates with `cancelRefetch:
false` so a second waker joins the in-flight fetch; cold/warm keep the
default (`test_canceled_stale_fetch_cannot_overwrite_catch_up_window`
relies on it). Concurrent regression test fails at `5a5566c0f` with 3.

At `b129231c8` (PR head; verified in one shell with `git rev-parse HEAD`
= `b129231c8`): `pnpm check`, `tsc --noEmit`, desktop unit 5,393 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `5a5566c0f`: `pnpm check`, `tsc --noEmit`, desktop unit 5,392 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `35834cb31`: desktop unit 5,390 / 0; `cargo test -p buzz-relay --lib`
910 / 0; fmt + clippy `-D warnings` clean; Playwright 32 / 32 (same
specs minus affordance); GitHub CI green on every job except Smoke (3)
(unrelated project-review row-count + messaging timing flake, per Carl)
and Unit Tests (sherpa cache skeleton, below).

Earlier, all at `8133d70bb` (this PR head is `0c492366d` = 8133d70 + a
comments-only commit correcting two `profile/hooks.ts` freshness
comments from 60s to 10 min; pre-push desktop check/typecheck/test
5,387/0 re-ran at 0c49236) in one shell; `origin/main` = `040b203f7`
at PR open, since moved to `4baccd539` (#6558, mobile only — zero file
overlap, `git merge-tree` clean):

- `just desktop-test` — 5,387 passed / 0 failed (includes new hook-level
call-count test: cold = 1, stale-prefetched = 1, hydrated = 0 on mount
then 1 on invalidate with wholesale replacement)
- Playwright smoke `relay-reconnect.spec.ts` + `thread-unread.spec.ts` +
`channel-head-restart.spec.ts` — 30/30 (thread-unread was 8/13 at
`7acbf951b`; relay-reconnect was 15/16 at `bcfe04e2f`). The restart spec
persists a head, reloads into a fresh mock relay with the head fetch
held 5s, asserts the persisted row paints within 2s, exactly one
`get_channel_window` after open, and the stale row is removed when the
authoritative page lands.
- `pnpm typecheck`, `pnpm check` — clean

At `7acbf951b` (everything except the two-line `useThreadReplies.ts`
staleTime revert and the test-only `relay-reconnect.spec.ts` change),
also green in one shell:
- `just desktop-tauri-test` — 2,859 passed / 0 failed across the
workspace (channel_head_cache: wire shape, LRU+caps, schema reset,
corrupt-row skip)
- `just test-unit` — 632 passed (buzz-core/auth); `cargo test -p
buzz-relay --lib` — 908 passed / 0 failed
- `just check` components: fmt-check, clippy, desktop-check,
desktop-typecheck, desktop-tauri-fmt-check, desktop-tauri-clippy,
web-check, mobile-check, file-size-check — all green
- `just desktop-build`, `web-build`, `desktop-tauri-check`,
`mobile-test` (1,661 passed) — all green

CI note: the "Unit Tests" job goes red on this PR and on `main` whenever
it hits a poisoned `rust-cache` entry (an empty-directory skeleton of
`target/sherpa-onnx-prebuilt` that `sherpa-onnx-sys` build.rs trusts),
surfacing as `could not find native static library sherpa-onnx-c-api` in
`buzz-voice` — a crate this PR doesn't touch. Deleting the cache entry
and rerunning turned the job green at `0c492366d` (28/28); it re-poisons
on the next `main` push until the workflow clears that directory after
cache restore.

Reviewed in-channel by Wren (9 / 9 / 9.5) and Eva (9 / 9 / 9), and
line-by-line by me before opening; the staleTime fix re-verified by Wren
and me independently; the relay-reconnect test fix bisected and verified
by me.

---------

Signed-off-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Signed-off-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Signed-off-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Signed-off-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>
Co-authored-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Co-authored-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Co-authored-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Co-authored-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>

* chore(desktop): drop unused ORIGINAL_CONTENT from empty-edit-delete spec (#6517)

`biome check` fails with `lint/correctness/noUnusedVariables` on
`ORIGINAL_CONTENT` in `desktop/tests/e2e/empty-edit-delete.spec.ts`,
which fails `pnpm check` (Desktop Core) for **every PR touching desktop
paths** — e.g. it currently blocks #6460. It presumably landed while
Desktop Core was path-skipped on the introducing PR.

One-line removal; the constant has no remaining references (the
assertions use `RENDERED_ORIGINAL_CONTENT`).

Signed-off-by: Max Lampert <[email protected]>

* fix(desktop): restore true zoom by scaling the root rem (#6514)

## Summary

Follow-up to #5644. Cmd +/- had become a text-only zoom: type scaled
while rem-based padding, gaps, widths, avatars, and controls stayed
frozen, which produced cramped layouts (see [#buzz-frontend
thread](buzz://message?channel=a410ffde-c61f-416a-96e0-c296b5f5ecc9&id=1a758115cf07b00c097f6e988553908c045165325a57637519cfa7ed9c9accec)).

Root cause: #5644 introduced a virtual typography rem so the **Font
size** preference could change text without moving layout — a good
decoupling — but it also routed **Cmd +/- zoom** through that same
px-valued token and pinned the real root at 16px. One decision ("freeze
layout") was applied to two dials that shouldn't share it.

This PR gives each dial one owner and lets CSS compose them:

| Control | Changes | How |
|---|---|---|
| **Cmd +/- zoom** | Everything — true zoom | Scales the real `<html>`
font-size again (`useWebviewZoomShortcuts`) |
| **Font size preference** | Text only | Sets `data-font-size`;
`typography.css` maps it to a unitless `--buzz-type-scale`, mirroring
how density already works |

`--buzz-type-rem` becomes `calc(1rem * var(--buzz-type-scale))` —
rem-relative, so it rides on zoom automatically. Resulting text px = `16
× zoom × scale × token-ratio`. The 13 / 14 / 15px conversation contract
is unchanged at default zoom. Density and the type ramp from #5644 are
untouched.

The preference module no longer does px math or knows about zoom; the
zoom hook no longer imports the preference module. Net deletion in
production code.

## Validation

- `pnpm test` — 5,308 desktop unit tests
- `pnpm check:px-text`, `tsc --noEmit`, biome
- Playwright: `top-chrome-zoom-clearance.spec.ts` (native-chrome
clearance stays fixed under root zoom),
`inbox-refactor-screenshots.spec.ts` (zoomed row padding now asserts
`4.4px` instead of the frozen `4px`), and both `profile.spec.ts` zoom
tests (composed zoom × preference, cross-window storage reset)
- Before/after screenshots at 140% zoom in the comment below

---------

Signed-off-by: morgmart <[email protected]>
Co-authored-by: Claude <[email protected]>

* chore(deps): update swatinem/rust-cache digest to 6323deb (#5441)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [Swatinem/rust-cache](https://redirect.github.com/Swatinem/rust-cache)
([changelog](https://redirect.github.com/Swatinem/rust-cache/compare/e18b497796c12c097a38f9edb9d0641fb99eee32..6323deb102c322ba6fcbdcafc7e3dddab59af2b6))
| action | digest | `e18b497` → `6323deb` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
Dashboard](../issues/1) for more information.

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* chore(deps): update ubuntu:24.04 docker digest to 561618e (#5442)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [ubuntu](https://hub.docker.com/_/ubuntu)
([source](https://git.launchpad.net/cloud-images/+oci/ubuntu-base)) |
container | digest | `4fbb8e6` → `561618e` |

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* chore(deps): update dependency @tauri-apps/api to v2.11.1 (#5444)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [@tauri-apps/api](https://redirect.github.com/tauri-apps/tauri) |
[`2.11.0` →
`2.11.1`](https://renovatebot.com/diffs/npm/@tauri-apps%2fapi/2.11.0/2.11.1)
|
![age](https://developer.mend.io/api/mc/badges/age/npm/@tauri-apps%2fapi/2.11.1?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@tauri-apps%2fapi/2.11.0/2.11.1?slim=true)
|

---

> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
Dashboard](../issues/1) for more information.

---

### Release Notes

<details>
<summary>tauri-apps/tauri (@&#8203;tauri-apps/api)</summary>

###
[`v2.11.1`](https://redirect.github.com/tauri-apps/tauri/releases/tag/%40tauri-apps/api-v2.11.1):
@&#8203;tauri-apps/api v2.11.1

[Compare
Source](https://redirect.github.com/tauri-apps/tauri/compare/@tauri-apps/api-v2.11.0...@tauri-apps/api-v2.11.1)

<details>
<summary><em><h4>PNPM Audit</h4></em></summary>

```
No known vulnerabilities found
```

</details>

#### \[2.11.1]
##### Enhancements

-
[`916782601`](https://www.github.com/tauri-apps/tauri/commit/9167826011cc3d114bf12dfb301968fae479891f)
([#&#8203;15520](https://redirect.github.com/tauri-apps/tauri/pull/15520)
by [@&#8203;polw1](https://www.github.com/tauri-apps/tauri/../../polw1))
Document that `Monitor.size`, `Monitor.position` and `Monitor.workArea`
are in physical pixels, with examples showing how to convert them to the
logical pixels expected by window creation options via
`toLogical(monitor.scaleFactor)`.

<details>
<summary><em><h4>PNPM Publish</h4></em></summary>

```
> @tauri-apps/[email protected] npm-publish /home/runner/work/tauri/tauri/packages/api
> pnpm build && cd ./dist && pnpm publish --access public --loglevel silly --no-git-checks

> @tauri-apps/[email protected] build /home/runner/work/tauri/tauri/packages/api
> rollup -c --configPlugin typescript

�[36m
�[1m./src/app.ts, ./src/core.ts, ./src/dpi.ts, ./src/event.ts, ./src/image.ts, ./src/index.ts, ./src/menu.ts, ./src/mocks.ts, ./src/path.ts, ./src/tray.ts, ./src/webview.ts, ./src/webviewWindow.ts, ./src/window.ts�[22m → �[1m./dist, ./dist�[22m...�[39m
�[32mcreated �[1m./dist, ./dist�[22m in �[1m883ms�[22m�[39m
�[36m
�[1msrc/index.ts�[22m → �[1m../../crates/tauri/scripts/bundle.global.js�[22m...�[39m
�[32mcreated �[1m../../crates/tauri/scripts/bundle.global.js�[22m in �[1m1.4s�[22m�[39m
npm verbose cli /opt/hostedtoolcache/node/24.16.0/x64/bin/node /opt/hostedtoolcache/node/24.16.0/x64/bin/npm
npm info using [email protected]
npm info using [email protected]
npm silly config load:file:/opt/hostedtoolcache/node/24.16.0/x64/lib/node_modules/npm/npmrc
npm silly config load:file:/tmp/286e8dee195254a4370e608b672019b0/.npmrc
npm silly config load:file:/home/runner/.npmrc
npm silly config load:file:/home/runner/.config/pnpm/rc
npm verbose title npm publish tauri-apps-api-2.11.1.tgz
npm verbose argv "publish" "--ignore-scripts" "tauri-apps-api-2.11.1.tgz" "--access" "public" "--loglevel" "silly"
npm verbose logfile logs-max:10 dir:/home/runner/.npm/_logs/2026-06-17T13_41_23_851Z-
npm verbose logfile /home/runner/.npm/_logs/2026-06-17T13_41_23_851Z-debug-0.log
npm warn Unknown env config "verify-deps-before-run". This will stop working in the next major version of npm. See `npm help npmrc` for supported config options.
npm warn Unknown env config "npm-globalconfig". This will stop working in the next major version of npm. See `npm help npmrc` for supported config options.
npm warn Unknown env config "overrides". This will stop working in the next major version of npm. See `npm help npmrc` for supported config options.
npm warn Unknown env config "_jsr-registry". This will stop working in the next major version of npm. See `npm help npmrc` for supported config options.
npm silly logfile done cleaning log files
npm verbose publish [ 'tauri-apps-api-2.11.1.tgz' ]
npm http cache file:/tmp/286e8dee195254a4370e608b672019b0/tauri-apps-api-2.11.1.tgz 0ms (cache hit)
npm notice
npm notice 📦  @tauri-apps/[email protected]
npm notice Tarball Contents
npm notice 99.3kB CHANGELOG.md
npm notice 10.2kB LICENSE_APACHE-2.0
npm notice 1.1kB LICENSE_MIT
npm notice 3.5kB README.md
npm notice 5.9kB app.cjs
npm notice 5.4kB app.d.ts
npm notice 5.5kB app.js
npm notice 11.2kB core.cjs
npm notice 6.5kB core.d.ts
npm notice 10.7kB core.js
npm notice 11.0kB dpi.cjs
npm notice 8.8kB dpi.d.ts
npm notice 10.8kB dpi.js
npm notice 5.8kB event.cjs
npm notice 4.9kB event.d.ts
npm notice 5.7kB event.js
npm notice 2.2kB external/tslib/tslib.es6.cjs
npm notice 2.2kB external/tslib/tslib.es6.js
npm notice 3.0kB image.cjs
npm notice 2.4kB image.d.ts
npm notice 2.9kB image.js
npm notice 738B index.cjs
npm notice 1.2kB index.d.ts
npm notice 669B index.js
npm notice 1.1kB menu.cjs
npm notice 451B menu.d.ts
npm notice 717B menu.js
npm notice 3.6kB menu/base.cjs
npm notice 887B menu/base.d.ts
npm notice 3.6kB menu/base.js
npm notice 2.2kB menu/checkMenuItem.cjs
npm notice 1.5kB menu/checkMenuItem.d.ts
npm notice 2.2kB menu/checkMenuItem.js
npm notice 7.4kB menu/iconMenuItem.cjs
npm notice 6.1kB menu/iconMenuItem.d.ts
npm notice 7.4kB menu/iconMenuItem.js
npm notice 5.1kB menu/menu.cjs
npm notice 4.4kB menu/menu.d.ts
npm notice 5.0kB menu/menu.js
npm notice 1.7kB menu/menuItem.cjs
npm notice 1.3kB menu/menuItem.d.ts
npm notice 1.6kB menu/menuItem.js
npm notice 1.1kB menu/predefinedMenuItem.cjs
npm notice 2.6kB menu/predefinedMenuItem.d.ts
npm notice 1.1kB menu/predefinedMenuItem.js
npm notice 7.1kB menu/submenu.cjs
npm notice 4.8kB menu/submenu.d.ts
npm notice 6.9kB menu/submenu.js
npm notice 9.8kB mocks.cjs
npm notice 5.0kB mocks.d.ts
npm notice 9.7kB mocks.js
npm notice 1.8kB package.json
npm notice 22.7kB path.cjs
npm notice 17.7kB path.d.ts
npm notice 21.7kB path.js
npm notice 7.1kB tray.cjs
npm notice 8.5kB tray.d.ts
npm notice 7.0kB tray.js
npm notice 20.7kB webview.cjs
npm notice 23.8kB webview.d.ts
npm notice 20.5kB webview.js
npm notice 8.4kB webviewWindow.cjs
npm notice 4.9kB webviewWindow.d.ts
npm notice 8.3kB webviewWindow.js
npm notice 68.1kB window.cjs
npm notice 64.9kB window.d.ts
npm notice 67.2kB window.js
npm notice Tarball Details
npm notice name: @tauri-apps/api
npm notice version: 2.11.1
npm notice filename: tauri-apps-api-2.11.1.tgz
npm notice package size: 135.7 kB
npm notice unpacked size: 699.0 kB
npm notice shasum: cd6b13fc26403ca095a02e39ecdbec8048d2872d
npm notice integrity: sha512-M2FPuYND2m+wh[...]sUepJWugQCvAA==
npm notice total files: 67
npm notice
npm http fetch GET https://run-actions-1-azure-eastus.actions.githubusercontent.com/113//idtoken/***/***?api-version=2.0&audience=npm%3Aregistry.npmjs.org 200 76ms
npm http fetch POST 201 https://registry.npmjs.org/-/npm/v1/oidc/token/exchange/package/@tauri-apps%2fapi 674ms
npm verbose oidc Successfully retrieved and set token
npm http fetch GET 200 https://registry.npmjs.org/@tauri-apps%2fapi 54ms (cache miss)
npm notice Publishing to https://registry.npmjs.org/ with tag latest and public access
npm notice publish Signed provenance statement with source and build information from GitHub Actions
npm notice publish Provenance statement published to transparency log: https://search.sigstore.dev/?logIndex=1851797040
npm http fetch PUT 200 https://registry.npmjs.org/@tauri-apps%2fapi 2070ms
+ @tauri-apps/[email protected]
npm verbose cwd /tmp/286e8dee195254a4370e608b672019b0
npm verbose os Linux 6.17.0-1018-azure
npm verbose node v24.16.0
npm verbose npm  v11.13.0
npm verbose exit 0
npm info ok
```

</details>

</details>

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* chore(deps): update rust crate futures to v0.3.33 (#5445)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [futures](https://rust-lang.github.io/futures-rs)
([source](https://redirect.github.com/rust-lang/futures-rs)) |
dev-dependencies | patch | `0.3.32` → `0.3.34` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
Dashboard](../issues/1) for more information.

---

### Release Notes

<details>
<summary>rust-lang/futures-rs (futures)</summary>

###
[`v0.3.34`](https://redirect.github.com/rust-lang/futures-rs/blob/HEAD/CHANGELOG.md#0334---2026-08-11)

[Compare
Source](https://redirect.github.com/rust-lang/futures-rs/compare/0.3.33...0.3.34)

- Preserve cloned waker identity.
([#&#8203;3032](https://redirect.github.com/rust-lang/futures-rs/issues/3032))
- Updato `syn` to 3.
([#&#8203;3028](https://redirect.github.com/rust-lang/futures-rs/issues/3028))

###
[`v0.3.33`](https://redirect.github.com/rust-lang/futures-rs/blob/HEAD/CHANGELOG.md#0333---2026-07-18)

[Compare
Source](https://redirect.github.com/rust-lang/futures-rs/compare/0.3.32...0.3.33)

- Fix `ReadLine`'s soundness issue regarding to exception safety.
([#&#8203;3020](https://redirect.github.com/rust-lang/futures-rs/issues/3020))
- Fix unsound `Send` impl for `IterPinRef` and `Iter`.
([#&#8203;3003](https://redirect.github.com/rust-lang/futures-rs/issues/3003))
- Fix stacked borrows violation in `compat01as03` implementation.
([#&#8203;3012](https://redirect.github.com/rust-lang/futures-rs/issues/3012))
- Fix memory leak in `FuturesUnordered::IntoIter`.
([#&#8203;3005](https://redirect.github.com/rust-lang/futures-rs/issues/3005))
- Add `portable-atomic-alloc` feature and use it in `FuturesUnordered`.
([#&#8203;3007](https://redirect.github.com/rust-lang/futures-rs/issues/3007))
- Re-export `alloc::task::Wake`.
([#&#8203;3010](https://redirect.github.com/rust-lang/futures-rs/issues/3010))
- Update `spin` to 0.12.
([#&#8203;3014](https://redirect.github.com/rust-lang/futures-rs/issues/3014))

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* chore(deps): update rust crate futures-util to v0.3.33 (#5448)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [futures-util](https://rust-lang.github.io/futures-rs)
([source](https://redirect.github.com/rust-lang/futures-rs)) |
dependencies | patch | `0.3.32` → `0.3.34` |
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([source](https://redirect.github.com/rust-lang/futures-rs)) |
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> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
Dashboard](../issues/1) for more information.

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### Release Notes

<details>
<summary>rust-lang/futures-rs (futures-util)</summary>

###
[`v0.3.34`](https://redirect.github.com/rust-lang/futures-rs/blob/HEAD/CHANGELOG.md#0334---2026-08-11)

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- Preserve cloned waker identity.
([#&#8203;3032](https://redirect.github.com/rust-lang/futures-rs/issues/3032))
- Updato `syn` to 3.
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###
[`v0.3.33`](https://redirect.github.com/rust-lang/futures-rs/blob/HEAD/CHANGELOG.md#0333---2026-07-18)

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- Fix `ReadLine`'s soundness issue regarding to exception safety.
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- Fix unsound `Send` impl for `IterPinRef` and `Iter`.
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* chore(deps): update rust crate http to v1.4.2 (#5451)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [http](https://redirect.github.com/hyperium/http) | dependencies |
patch | `1.4.0` → `1.4.2` |

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> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
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<details>
<summary>hyperium/http (http)</summary>

###
[`v1.4.2`](https://redirect.github.com/hyperium/http/blob/HEAD/CHANGELOG.md#142-June-8-2026)

[Compare
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- Fix `uri::Builder` to allow `"*"` as the path when scheme and
authority are also set, used in HTTP/2 requests.
- Fix `Uri` to properly reject `DEL` characters.

###
[`v1.4.1`](https://redirect.github.com/hyperium/http/blob/HEAD/CHANGELOG.md#141-May-25-2026)

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- Fix `PathAndQuery::from_static()` and `from_shared()` to reject inputs
that do not start with `/`.
- Fix `Extend` for `HeaderMap` to clamp max size hint and not overflow.
- Fix `header::IntoIter` that could use-after-free if the generic value
type could panic on drop.
- Fix `header::{IterMut, ValuesIterMut}` to not violate stacked borrows.

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* chore(deps): update rust crate http-body-util to v0.1.4 (#5452)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [http-body-util](https://redirect.github.com/hyperium/http-body) |
dependencies | patch | `0.1.3` → `0.1.5` |

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> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
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### Release Notes

<details>
<summary>hyperium/http-body (http-body-util)</summary>

###
[`v0.1.5`](https://redirect.github.com/hyperium/http-body/compare/http-body-util-v0.1.4...http-body-util-v0.1.5)

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###
[`v0.1.4`](https://redirect.github.com/hyperium/http-body/releases/tag/http-body-util-v0.1.4)

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#### What's Changed

- Add `Fused` body combinator that always returns `None` once completed.
- Add `BodyExt::into_stream()` to convert a body into a `Stream`.
- Add `Full::into_inner()` to get the full `Buf`.
- Add `InspectFrame` and `InspectErr` combinators.

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* chore(deps): update dependency sonner to v2.0.8 (#6093)

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| Package | Change |
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[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [sonner](https://sonner.emilkowal.ski/)
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* chore(deps): update rust crate async-trait to v0.1.92 (#6094)

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| Package | Type | Update | Change |
|---|---|---|---|
| [async-trait](https://redirect.github.com/dtolnay/async-trait) |
dependencies | patch | `0.1.91` → `0.1.92` |

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* fix(composer): preserve caret when inserting mentions mid-message (#6531)

**Category:** fix
**User Impact:** Users can insert mentions earlier in a draft and
continue typing without the caret corrupting the rest of the message.

**Problem:** Caret correction ran after every document change, so typing
a mention before existing text repeatedly advanced across the mention
separator and interleaved spaces into the draft. **Solution:** Limit
correction to the autocomplete settlement it was designed for, with
transaction-level and browser-level regression coverage for known and
unregistered mentions.

<details>
<summary>File changes</summary>

**desktop/src/features/messages/lib/mentionHighlightExtension.ts**
Restricts trailing-space caret advancement to an armed autocomplete
settlement instead of every document change.

**desktop/src/features/messages/lib/mentionHighlightExtension.test.mjs**
Exercises the real ProseMirror plugin state and verifies mid-draft
mention typing, unknown tokens, end-of-message typing, and
completed-mention separators.

**desktop/tests/e2e/mentions.spec.ts**
Reproduces the reported composer workflow in Chromium and covers the
same corruption path for an unregistered `@token`.

</details>

## Reproduction steps

1. Open a channel and enter `hello world` in the composer.
2. Move the caret between `hello` and ` world`.
3. Type ` @bo`, select `bob` from autocomplete, and continue typing
`abc`.
4. Confirm the composer reads `hello @bob abc world` with the caret
after `abc`.
5. Repeat with an unregistered token such as ` @zzq` and confirm the
existing text remains intact.

## Before / After

| Before | After |
| --- | --- |
| Typing after a mid-draft mention walks the caret through the existing
message. | Continued typing stays after the inserted mention. |
| ![Before: mention caret corrupts existing draft
text](https://d24qwcpro867f5.cloudfront.net/repos/buzz/prs/6531/mention-caret-before.gif)
| ![After: caret remains after the inserted
mention](https://d24qwcpro867f5.cloudfront.net/repos/buzz/prs/6531/mention-caret-after.gif)
|

---------

Signed-off-by: Taylor Ho <[email protected]>
Co-authored-by: Mongo <5398c5fd039b963ce132b3e078e7c4af097dd997517bb5e14c2682fe68c25197@buzz.block.builderlab.xyz>

* fix(desktop): remove Buzz entity link previews (#6512)

**Category:** improvement
**User Impact:** Buzz-native project, repository, issue, and pull
request links now appear once as compact inline chips, with their
details available on hover.

**Problem:** Buzz-native entity links rendered both an inline chip and a
standalone preview card, repeating the same metadata and adding visual
noise to conversations. **Solution:** Exclude Buzz-native links from the
shared standalone-preview extractor while leaving entity parsing intact
for chip tooltips and preserving external web previews and attachment
cards.

<details>
<summary>File changes</summary>

**desktop/src/shared/lib/linkPreview.ts**
Stops Buzz-native preview candidates after parsing, including same-relay
git clone URLs that normalize to repository entities, while allowing
external URLs through the existing snapshot path.

**desktop/src/shared/lib/linkPreview.test.mjs**
Covers project, repository, issue, pull request, markdown-labeled,
same-relay clone, and mixed external-link extraction behavior.

**desktop/src/shared/ui/markdown/useMessageLinkPreviews.test.mjs**
Confirms sent messages no longer merge a standalone Buzz entity card
while external sender snapshots still render.

</details>

## Reproduction steps

1. Open a desktop channel containing a `buzz://project`, `buzz://repo`,
`buzz://issue`, or `buzz://pr` link.
2. Confirm the link renders as an inline entity chip without a second
standalone Buzz card below the message.
3. Hover the chip and confirm its entity metadata remains available.
4. Post an external HTTPS link and confirm its web preview still
renders.
5. Paste a same-relay `/git/<owner>/<repo>` clone URL and confirm it
uses the repository chip without a duplicate card.

## Screenshots

| Before | After |
| --- | --- |
| Inline chip plus redundant standalone Project card | Inline chip is
now the sole presentation |
| ![Before: project chip and duplicate standalone
card](https://raw.githubusercontent.com/block/buzz/7e1a0d6cfb52382ef636d7331cf30ea334429c4d/pr-6512--before.png)
| ![After: project chip without a standalone
card](https://raw.githubusercontent.com/block/buzz/7e1a0d6cfb52382ef636d7331cf30ea334429c4d/pr-6512--after.png)
|

**After — rich metadata stays available on hover**

![After: dark theme with pink accent and Project tooltip showing
description and repository
count](https://raw.githubusercontent.com/block/buzz/7e1a0d6cfb52382ef636d7331cf30ea334429c4d/pr-6512--after-tooltip-rich.png)

## Verification

At commit `3fa74cdd342ac1f6721b7d56a7f111af31e0e6e9`:

- focused link-preview + Markdown unit suites — 119/119 passed
- targeted registered smoke E2E — 8/8 passed, including labeled
same-relay clone metadata, ordinary-link presentation, and in-app
navigation
- `cd desktop && pnpm exec tsc --noEmit` — passed
- `git diff --check origin/main...HEAD` — passed
- pre-push hooks — desktop check, TypeScript, and full desktop unit
suite passed

---------

Signed-off-by: Rizz <302abe414ca6e3134763d2539bfcf145aea2a63fe5f8455204ed602fd40cf381@buzz.block.builderlab.xyz>
Signed-off-by: Taylor Ho <[email protected]>
Co-authored-by: Rizz <302abe414ca6e3134763d2539bfcf145aea2a63fe5f8455204ed602fd40cf381@buzz.block.builderlab.xyz>
Co-authored-by: Mongo <5398c5fd039b963ce132b3e078e7c4af097dd997517bb5e14c2682fe68c25197@buzz.block.builderlab.xyz>

* feat(desktop-messages): keep agents addressed across messages (#6315)

**Category:** new-feature
**User Impact:** Users can keep selected agents addressed across
consecutive messages without retyping their handles.

**Problem:** Repeated conversations with agents require manually typing
the same mentions on every turn, which adds friction and makes
recipients easy to omit.

**Solution:** The composer can now keep agents automatically addressed
per channel, either from the mention controls or after a successful
inline mention. Addressed agents remain visible in the toolbar, apply to
channel threads, survive send failures safely, and never cross community
boundaries.

## Changes

<details>
<summary>File changes</summary>

**desktop/src-tauri/src/events/message_tags.rs**  
Preserves the automatic-address marker on validated mention reference
tags.

**desktop/src/features/channels/ui/ChannelPane.tsx**  
Wires the appropriate channel, thread, inbox, or forum composer context
without leaking audiences across surfaces.

**desktop/src/features/communities/useCommunityInit.ts**  
Clears composer audience state when the active community changes.

**desktop/src/features/forum/ui/ForumComposer.tsx**  
Wires the appropriate channel, thread, inbox, or forum composer context
without leaking audiences across surfaces.

**desktop/src/features/forum/ui/ForumComposerAutocompletes.tsx**  
Wires the appropriate channel, thread, inbox, or forum composer context
without leaking audiences across surfaces.

**desktop/src/features/home/ui/InboxDetailPane.tsx**  
Wires the appropriate channel, thread, inbox, or forum composer context
without leaking audiences across surfaces.

**desktop/src/features/messages/lib/agentAddressMention.d.mts**  
Defines helpers and types for marked automatic-address mention tags.

**desktop/src/features/messages/lib/agentAddressMention.mjs**  
Defines helpers and types for marked automatic-address mention tags.

**desktop/src/features/messages/lib/agentAddressMention.test.mjs**  
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.

**desktop/src/features/messages/lib/applyEditTagOverlay.mjs**  
Preserves automatic-address metadata when edited message tags are
overlaid.

**desktop/src/features/messages/lib/applyEditTagOverlay.test.mjs**  
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.


**desktop/src/features/messages/lib/autoPinMentionedAgentsPreference.test.mjs**
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.


**desktop/src/features/messages/lib/autoPinMentionedAgentsPreference.ts**
Stores the preference that keeps explicitly mentioned agents addressed
for later messages.

**desktop/src/features/messages/lib/extractMentionPersonas.ts**  
Separates persona recipients from the composer mention orchestration.

**desktop/src/features/messages/lib/persistentAgentAudience.test.mjs**  
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.

**desktop/src/features/messages/lib/persistentAgentAudience.ts**  
Maintains bounded, in-memory, channel-scoped automatic agent audiences.

**desktop/src/features/messages/lib/useMentionSelection.ts**  
Centralizes mention picker selection state and agent-first selection
behavior.

**desktop/src/features/messages/lib/useMentions.ts**  
Exposes explicit picker origins and selection controls while preserving
inline mention behavior.

**desktop/src/features/messages/ui/ComposerAddressControls.test.mjs**  
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.

**desktop/src/features/messages/ui/ComposerAddressControls.tsx**  
Renders compact addressed-agent avatars and the automatic-mention
management entry point.

**desktop/src/features/messages/ui/MentionAutocomplete.test.mjs**  
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.

**desktop/src/features/messages/ui/MentionAutocomplete.tsx**  
Adds automatic-mention controls and options to the existing mention
picker.

**desktop/src/features/messages/ui/MessageAgentAddressPrefix.tsx**  
Shows which agents were automatically addressed on a sent message.

**desktop/src/features/messages/ui/MessageComposer.tsx**  
Integrates automatic audiences, picker controls, accessible feedback,
shortcuts, and send behavior.

**desktop/src/features/messages/ui/MessageComposer.types.ts**  
Defines the simplified channel audience context shared by composer
hosts.

**desktop/src/features/messages/ui/MessageComposerToolbar.tsx**  
Places automatic-address controls in the composer toolbar without
crowding narrow layouts.

**desktop/src/features/messages/ui/MessageRow.tsx**  
Displays automatic-address metadata alongside sent message content.

**desktop/src/features/messages/ui/MessageThreadPanel.tsx**  
Wires the appropriate channel, thread, inbox, or forum composer context
without leaking audiences across surfaces.

**desktop/src/features/messages/ui/composerAgentKeyboard.test.mjs**  
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.


**desktop/src/features/messages/ui/persistentAgentAudienceHosts.test.mjs**
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.

**desktop/src/features/messages/ui/useAddressMentionPulse.test.mjs**  
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.

**desktop/src/features/messages/ui/useAddressMentionPulse.ts**  
Provides success and failure animation signals for addressed-agent
controls.

**desktop/src/features/messages/ui/useAgentAddressLockPicker.test.mjs**
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.

**desktop/src/features/messages/ui/useAgentAddressLockPicker.ts**  
Coordinates adding, removing, and announcing automatically addressed
agents.

**desktop/src/features/messages/ui/useAlwaysAddressShortcut.ts**  
Implements the platform-aware shortcut for toggling automatic
addressing.

**desktop/src/features/messages/ui/useAutoPinMentionedAgents.ts**  
Promotes successfully sent inline agent mentions and provides a single
undoable notification.

**desktop/src/features/messages/ui/useComposerMentionPicker.ts**  
Opens the mention picker without rewriting the current draft.


**desktop/src/features/messages/ui/useMentionSendFlow.helpers.test.mjs**
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.

**desktop/src/features/messages/ui/useMentionSendFlow.helpers.ts**  
Merges automatic and inline recipients, marks outgoing tags, and
restores failed sends safely.

**desktop/src/features/messages/ui/useMentionSendFlow.ts**  
Merges automatic and inline recipients, marks outgoing tags, and
restores failed sends safely.


**desktop/src/features/messages/ui/usePersistentAgentMentionHydration.ts**
Removes the prior draft-text hydration approach now that automatic
audiences stay at composer ingress.

**desktop/src/features/settings/ui/AgentsSettingsPanel.tsx**  
Replaces the old global behavior with explicit composer-level
automatic-mention controls.

**desktop/src/features/settings/ui/PreventSleepSettingsCard.tsx**  
Replaces the old global behavior with explicit composer-level
automatic-mention controls.

**desktop/src/shared/lib/keyboard-shortcuts.ts**  
Defines the user-facing automatic-address keyboard shortcut label.

**desktop/src/shared/ui/VideoReviewCommentMarkdown.tsx**  
Allows automatic-address prefixes to compose with video review
timecodes.

**desktop/tests/e2e/persistent-agent-audience.spec.ts**  
Covers the automatic-address behavior and its failure, keyboard, layout,
or persistence boundaries.

</details>

## Reproduction Steps

1. Open a channel with one or more agents and open the mention picker
from the composer.
2. Select an agent for automatic mentions, then send several messages
without retyping the handle; confirm the agent remains in the composer
control and receives each message.
3. Mention another agent inline, send successfully, and confirm the
agent becomes automatically addressed; use the notification's Undo
action to reverse it.
4. Open a thread in the same channel and confirm the same addressed
agents are available there.
5. Remove an agent from the composer control and confirm later messages
stop addressing it.
6. Switch communities and confirm addressed agents do not carry into the
other community.

## Screenshots

All states below use the dark Buzz theme with a selected lilac accent.

### Addressed composer

Selected agents stay visible at the composer ingress without adding
handles to the draft.

![Two automatically addressed agents in the dark composer with a lilac
accent](https://raw.githubusercontent.com/block/buzz/74c2cbbd80ed630a0c6e00c420505a691bd4994a/pr-6315--01-addressed-composer.png)

### Open mention menu

The @ ingress opens the existing mention menu and shows which agents are
already addressed.

![Open mention menu with automatically addressed agents
highlighted](https://raw.githubusercontent.com/block/buzz/74c2cbbd80ed630a0c6e00c420505a691bd4994a/pr-6315--02-open-mention-menu.png)

### Mention options

The inline options pane controls whether a successful one-time agent
mention carries into later messages.

![Automatic mention options expanded above the mention
menu](https://raw.githubusercontent.com/block/buzz/74c2cbbd80ed630a0c6e00c420505a691bd4994a/pr-6315--03-mention-options.png)

### Agent settings

The same preference is available in **Settings → Agents →
Conversations**.

![Automatic agent mentions preference in the Agents settings
pane](https://raw.githubusercontent.com/block/buzz/74c2cbbd80ed630a0c6e00c420505a691bd4994a/pr-6315--04-agent-settings.png)

---------

Signed-off-by: Taylor Ho <[email protected]>
Co-authored-by: Rizz <302abe414ca6e3134763d2539bfcf145aea2a63fe5f8455204ed602fd40cf381@buzz.block.builderlab.xyz>
Co-authored-by: Carl <acda9e433d19dcd0e6b6840f7f4b98f3a56f1fab98049d444c087019e6d36560@buzz.block.builderlab.xyz>

* Add mobile Huddles voice MVP (#6056)

## Summary
- add foreground mobile Huddles on Android and iOS with native Opus
capture/playback, mute, speaker routing, participants, lifecycle, and
minimized drawer UI
- keep mobile Huddle cards and roster state live, including ended rooms,
relay-resolved profiles, and agents
- broadcast desktop agent TTS through the existing Huddle audio protocol

## Scope
Foreground human-to-human voice MVP only. Agent setup/transcripts,
background calling, recording, and advanced device controls remain out
of scope.

## Validation
- `just mobile-check`
- `just mobile-test` — 1,500 passed
- `just desktop-check` and `just desktop-test` — 4,957 passed
- desktop typecheck, strict Clippy, and Tauri tests — 2,445 passed, 15
ignored
- mobile worktree identity contract checks
- physical Pixel/iPhone behavior reviewed during development

---------

Signed-off-by: kenny lopez <[email protected]>
Signed-off-by: Kenny Lopez <[email protected]>
Signed-off-by: Princess Donut <b238ea756dee4d98afa5883fc7f1de61eeabe65bf700e3a5a5a80db5e42e2c2b@buzz.block.builderlab.xyz>
Signed-off-by: Tom Brow <[email protected]>
Co-authored-by: Carl <3c4caeafb646d23867f1c4832e68211d77e2561946171625f75c3ce1a3f2670f@buzz.block.builderlab.xyz>
Co-authored-by: Princess Donut <b238ea756dee4d98afa5883fc7f1de61eeabe65bf700e3a5a5a80db5e42e2c2b@buzz.block.builderlab.xyz>
Co-authored-by: leader <71e9f2c44a6932b6772caaaccda1911d010463c3e2c6c40410b8329956046801@buzz.block.builderlab.xyz>
Co-authored-by: Tom Brow <[email protected]>
Co-authored-by: Mongo <9cfd347903944d5b85aa6c93d2ab67381b978a92a31914bca69998968752a1d7@buzz.block.builderlab.xyz>

* refactor(acp): clarify agent prompt sections (#6501)

## Why
The ACP prompt puts a machine-specific Workspace prefix before static
base guidance and labels the user-facing agent instruction layer as the
generic System section. Because the cwd varies by launch and worktree,
leading with it reduces reusable prompt-prefix stability.

`[Workspace]` was added in [PR
#1194](https://github.com/block/buzz/pull/1194) as a defensive fix after
a broken `~/.sprout` → `~/.buzz` migration caused agents to scan `$HOME`
and trigger macOS TCC prompts. This change retains that grounding while
shrinking it to the current working directory and moving dynamic
environment context after the static Base prompt.

## What
- Emit the prompt in Base → Workspace → Agent Instructions order
- Reduce Workspace to `Current working directory: <absolute path>`
- Resolve cwd as an absolute native-platform path and preserve Windows
drive/UNC paths instead of checking for a leading `/`
- Emit Agent Instructions for persona and standalone agent instructions
across modern and legacy ACP paths
- Preserve parsing for archived observer frames that used System or the
former Workspace-before-Base order, and align the persona catalog label

## Risk Assessment
Medium-low — this changes prompt framing for every newly created agent
session. Existing archived observer frames remain parseable, and
execution still uses the same ACP working directory. Cwd resolution now
fails clearly instead of substituting `/` when the process directory
cannot be resolved.

## References
- https://github.com/block/buzz/pull/1103
- https://github.com/block/buzz/pull/1194

Generated with Codex

---------

Signed-off-by: Salman Mohammed <[email protected]>

* perf(desktop): make the Projects surface render-cheap (#6460)

Diagnostic profiling on a large community (101 issues, 258 PRs) showed
Projects tab switches taking 2.5–3.6s, dominated by single React commits
of 0.5–1.5s and per-render recomputation — fetch work was already off
the main thread; the cost was building the UI.

### Measured: tab click → painted, per tab

| tab | before | after |
|---|---|---:|
| projects | 3,608ms | 320–580ms |
| repositories | 3,126–3,534ms | 310–410ms |
| tasks | 395–1,101ms | ~115ms |
| reviews | 322–2,603ms | ~96ms |
| activity | 597–741ms | ~148ms |

Single-commit ceiling dropped from 1,541ms to ≤200ms (growth steps
25–40ms). Fixes in profiled-cost order:

- **Profile popover body mounts only while open.** `UserProfilePopover`
carried seven query subscriptions plus interaction hooks per instance
even when closed; grids mount hundreds (five per card in people stacks,
one per row author) — measured **~40ms per card**, the dominant share of
the 1.2s card-tab commits. The always-mounted shell is now just the
Radix root + trigger; trigger markup, hover timing, and keyboard
handling are unchanged, and hover/tooltip event continuity is preserved
because the trigger never remounts.
- **Incremental row mounting.** The first 12 cards / 30 rows render in
the first commit; the rest stream in 36–60-per-frame low-priority
transitions. Grouped lists trim across group boundaries via a pure,
tested slicer; the mounted count survives in-place refetches.
- **Activity feed**: was rebuilt unmemoized on every render,
markdown-flattening every issue/PR/comment body in the community just to
sort and keep 30 items (~360+ flattens per render on the measured
community). Now memoized, and bodies stay raw until after the sort+slice
— 30 flattens, once per data change.
- **Contribution graph** (always-visible rail, so every tab paid for
it): ~180 day cells each wrapped in a Radix tooltip with per-cell Intl
date formatting per render. Now memoized, cells precomputed once per
data change, native `title` tooltips. (The activity-bar segments keep
their styled Radix tooltips — pinned by an existing spec.)
- **Rows/cards memoized with identity-stable props**: per-row selection
arrays were rebuilt per row per render (O(n²) — 258 PRs × 258-item
arrays each render) and are now hoisted and shared; people arrays derive
inside the memoized cards; the rail's stat walk over every issue/PR is
memoized.
- **`content-visibility: auto`** on cards and rows so offscreen entries
skip layout and paint; **tab switches run in a React transition** so the
click stays responsive while the new tree mounts.

Remaining known cost (out of scope): cold-entry data readiness — the
work-item and activity queries ship thousands of events to compute
counts (2–4s on a large community; see the fan-lifecycle PR). The
structural fix is a relay-side aggregate; tracked as follow-up.

---------

Signed-off-by: Max Lampert <[email protected]>

* Downgrade mobile Huddles to audio protocol v2 (#6558)

## Summary

- downgrade Mobile Huddle authentication and native media configuration
from protocol v3 to the currently deployed relay's v2 contract
- restore the released one-byte relay peer prefix while retaining later
reconnect, roster, and playout-reset reliability fixes
- update Android, iOS, protocol documentation, and focused tests
together

Protocol v2 does not carry v3's occupancy epoch on audio frames, so it
cannot fence the narrow delayed-packet/peer-index-reuse race. This is an
intentional compatibility tradeoff until the relay v3 rollout is ready.

### Related issue

None found.

### Testing

- `just mobile-check`
- `just mobile-test` — 1,661 tests passed
- Android debug build installed and launched on Pixel 10 as
`xyz.block.buzz.mobile.sprout_mobile_profile_settings`; foreground
process verified
- signed iOS Release build installed and launched on iPhone as
`com.buzz.buzzMobile`; running process verified

A live two-device Huddle audio call remains a manual verification step.

Signed-off-by: kenny lopez <[email protected]>

* Polish Huddle participant interactions (#6312)

## Summary
- arrange Huddle participants in a responsive, equal-weight cluster with
spring enter/exit motion and a `+N` overflow
- spotlight tapped participants over a blurred call surface, with a
roster for hidden participants and no self-avatar action
- add selection haptics across full-screen and drawer controls,
including both end-call buttons
<img width="1080" height="2424" alt="Screenshot_20260819-151448"
src="https://github.com/user-attachments/assets/00b7fdca-2304-4788-9952-e07224798513"
/>
<img width="1080" height="2424" alt="Screenshot_20260819-151422"
src="https://github.com/user-attachments/assets/a0cfc861-0519-44ff-bb56-4c983ed6344c"
/>

## Validation
- `just mobile-check`
- focused participant, drawer-control, and full-screen end-call widget
tests
- Huddle-focused widget suite (15 tests)
- full mobile Flutter suite (1,538 tests)

## Dependency
Built on #6056 and contains only the follow-up interaction work. Merge
after #6056 lands.

---------

Signed-off-by: kenny lopez <[email protected]>
Signed-off-by: Kenny Lopez <[email protected]>
Signed-off-by: Princess Donut <b238ea756dee4d98afa5883fc7f1de61eeabe65bf700e3a5a5a80db5e42e2c2b@buzz.block.builderlab.xyz>
Signed-off-by: Tom Brow <[email protected]>
Co-authored-by: Carl <3c4caeafb646d23867f1c4832e68211d77e2561946171625f75c3ce1a3f2670f@buzz.block.builderlab.xyz>
Co-authored-by: Princess Donut <b238ea756dee4d98afa5883fc7f1de61eeabe65bf700e3a5a5a80db5e42e2c2b@buzz.block.builderlab.xyz>
Co-authored-by: leader <71e9f2c44a6932b6772caaaccda1911d010463c3e2c6c40410b8329956046801@buzz.block.builderlab.xyz>
Co-authored-by: Tom Brow <[email protected]>
Co-authored-by: Mongo <9cfd347903944d5b85aa6c93d2ab67381b978a92a31914bca69998968752a1d7@buzz.block.builderlab.xyz>

* Downgrade desktop Huddles to audio protocol v2 (#6610)

## Summary
- negotiate Huddle audio protocol v2 on desktop
- decode the released one-byte peer-index prefix
- retain roster-driven playout resets and document the missing v3 epoch
fence

## Testing
- `just desktop-tauri-fmt-check`
- `just desktop-tauri-clippy`
- `just desktop-tauri-test`

Signed-off-by: kenny lopez <[email protected]>

* perf(desktop): persist channel heads, collapse thread reads and reply sends (#6572)

## Summary

Lands the build-now items from the desktop latency plan
(#ui-performance-deep-dive) as one change. Every perceived-latency hot
path a user hits on launch, channel open, thread open, and reply send
drops one or more round trips.

**A1 — persisted channel heads (the big one).** Native WAL SQLite cache
(`desktop/src-tauri/src/channel_head_cache.rs`) keyed by `{pubkey,
relayUrl}` scope, 32 rows/scope LRU, 1 MiB per-row drop cap,
schema-version reset, corrupt-row tolerance, checkpointed on shutdown.
Three blocking-pool commands: `channel_head_cache_load` / `_store` /
`_clear`. On the renderer side, `CommunityQueryProvider` kicks off
hydration of up to 12 heads when it constructs the query client — the
app, splash and relay preconnect mount immediately; only
`useChannelMessagesQuery` awaits the seed (`channelHeadHydration`), then
consumes a one-shot hydrated gate so a hydrated channel pays **zero**
`get_channel_window` calls on mount and exactly **one** on the
post-subscription refresh, whose response replaces page zero wholesale.
That refresh fires whether live-subscription setup succeeds or fails,
and is sequenced behind hydration so it is always a distinct
authoritative fetch (see Review follow-ups). Bounds-only persisted heads
(zero rows) are not hydrated and take the cold loading path. The
timeline loading latch recognizes native-hydrated rows as restart-safe
so they paint immediately instead of holding a skeleton. The cache is a
paint accelerator only — the relay response is always authoritative.
Replaces the legacy localStorage `messageSnapshot.ts` (removed, -401
lines).

Kill switch: `VITE_BUZZ_CHANNEL_HEAD_CACHE=off` at build time or
`localStorage["buzz-channel-head-cache"] = "off"` at runtime. Cache is
cleared on community removal and scoped per identity, so a replaced
signer never sees the previous identity's rows.

**B1 — thread aux in one response.** Relay thread filters accept
`include_aux`; the bridge appends the same authorized two-hop
reactions/edits/deletions closure a channel window gets
(`build_aux_query` shared with the window path). Renderer
`useThreadReplies` drops its two follow-up aux fetches. `next_cursor` is
computed from reply-kind rows only since aux rows are unpaged.
Documented in `docs/bridge-channel-window.md`. Thread queries keep
`staleTime: 0` (`bcfe04e2f`): an earlier revision raised it to 30s,
which CI's `thread-unread.spec.ts` caught — once the user leaves a
channel, the live subscription stops feeding that thread's cache, so a
reopen must always take the (now single) authoritative read.

**B2 — cached root on reply send.** `send_channel_message` gains
`root_event_id`; when the renderer already holds the parent (channel or
thread cache) it passes the NIP-10 root, and native signs without the
relay round trip that `resolve_thread_ref` used to make. Strict hex
parse; `root_event_id` requires `parent_event_id`; absent root falls
back to the existing relay resolution. The renderer never sends a
guessed root.

**B4** general HTTP pool idle 10s→300s, max idle per host 1→2. **B5**
relay preconnect fires as soon as identity is ready instead of waiting
for `requestIdleCallback`. One e2e test (`relay-reconnect.spec.ts`
"service restart close resets accumulated backoff") had been relying on
the idle-callback batching to skip past its own seeded dial failures
before the channel list painted; `8133d70bb` makes it wait for the
connected state instead (test-only, still fails with the 1012 backoff
reset disabled). **B6** profile freshness 60s→10 min (both the in-memory
entry check and the query `staleTime`). Tradeoff: another user's
display-name/avatar edit can take up to 10 min to propagate to a client
that already holds their profile (relay reconnect refetches
`users-batch` but resolves from the still-fresh per-pubkey entry); your
own edits still evict the entry immediately (`evictUsersBatchEntries` in
`useUpdateProfileMutation`).

### Related issue
Follows #6456/#6457/#6459/#6460 (already merged). #6455 is the
measurement instrument and is intentionally not folded in. No duplicate
PR found.

### Review follow-ups
Addressing Carl's reviews
[5001114109](https://github.com/block/buzz/pull/6572#pullrequestreview-5001114109)
and
[5002596542](https://github.com/block/buzz/pull/6572#pullrequestreview-5002596542),
each pushed as new commits (no rebase):

- `4f06b7770` fix(desktop): mount app while channel heads hydrate;
always revalidate — provider no longer gates children on the cache load;
`refreshAfterSubscribe` runs on subscribe failure too; bounds-only heads
skipped at seed; seed merges into an existing window store. +3 tests.
- `35834cb31` fix(relay): drain aux closure hops across the page clamp —
`query_all_pages` walks the `(created_at, id)` keyset via
`until`/`before_id` until a short page (`AUX_PAGE_LIMIT` =
`DEFAULT_MAX_PAGE_LIMIT`, `AUX_MAX_PAGES` = 64 warn+truncate) so
one-shot `limit: 1000` newest-first no longer drops the oldest
edits/deletions. +3 tests; `docs/bridge-channel-window.md` updated.
- `db21b0531` merge of `origin/main` `e23632941` (#6558, #6312 — no
overlap).
- `5a5566c0f` fix(desktop): sequence post-subscribe refresh behind
channel head hydration — `refreshChannelWindowMessages` awaits
`channelHeadHydration()` and, for a hydration-seeded query (`data !==
undefined && dataUpdatedAt === 0`), the in-flight snapshot fetch before
invalidating. Without this, a subscription that settles before the
SQLite load invalidated a data-less in-flight query; TanStack dedupes
that onto the existing fetch (`query-core` `fetch()` only cancels when
`state.data` exists), which returned the seeded snapshot — 0
authoritative fetches. Regression test reproduces Carl's exact ordering
(fails at `35834cb31` with 0 calls), plus a cold-channel guard that the
fix does not double-fetch.
- `b129231c8` fix(desktop): let concurrent post-hydration refreshes
share one window fetch — found independently by Max and Wren reviewing
`5a5566c0f`: subscribe settlement + reconnect both wake on the same
snapshot promise and both invalidate; the second (default
`cancelRefetch: true`) cancelled and replaced the first authoritative
fetch (3 queryFn calls, not 2, and the cancelled Tauri invoke still hits
the relay). The seeded branch now invalidates with `cancelRefetch:
false` so a second waker joins the in-flight fetch; cold/warm keep the
default (`test_canceled_stale_fetch_cannot_overwrite_catch_up_window`
relies on it). Concurrent regression test fails at `5a5566c0f` with 3.

### Testing
At `b129231c8` (PR head; verified in one shell with `git rev-parse HEAD`
= `b129231c8`): `pnpm check`, `tsc --noEmit`, desktop unit 5,393 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `5a5566c0f`: `pnpm check`, `tsc --noEmit`, desktop unit 5,392 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `35834cb31`: desktop unit 5,390 / 0; `cargo test -p buzz-relay --lib`
910 / 0; fmt + clippy `-D warnings` clean; Playwright 32 / 32 (same
specs minus affordance); GitHub CI green on every job except Smoke (3)
(unrelated project-review row-count + messaging timing flake, per Carl)
and Unit Tests (sherpa cache skeleton, below).

Earlier, all at `8133d70bb` (this PR head is `0c492366d` = 8133d70bb + a
comments-only commit correcting two `profile/hooks.ts` freshness
comments from 60s to 10 min; pre-push desktop check/typecheck/test
5,387/0 re-ran at 0c492366d) in one shell; `origin/main` = `040b203f7`
at PR open, since moved to `4baccd539` (#6558, mobile only — zero file
overlap, `git merge-tree` clean):

- `just desktop-test` — 5,387 passed / 0 failed (includes new hook-level
call-count test: cold = 1, stale-prefetched = 1, hydrated = 0 on mount
then 1 on invalidate with wholesale replacement)
- Playwright smoke `relay-reconnect.spec.ts` + `thread-unread.spec.ts` +
`channel-head-restart.spec.ts` — 30/30 (thread-unread was 8/13 at
`7acbf951b`; relay-reconnect was 15/16 at `bcfe04e2f`). The restart spec
persists a head, reloads into a fresh mock relay with the head fetch
held 5s, asserts the persisted row paints within 2s, exactly one
`get_channel_window` after open, and the stale row is removed when the
authoritative page lands.
- `pnpm typecheck`, `pnpm check` — clean

At `7acbf951b` (everything except the two-line `useThreadReplies.ts`
staleTime revert and the test-only `relay-reconnect.spec.ts` change),
also green in one shell:
- `just desktop-tauri-test` — 2,859 passed / 0 failed across the
workspace (channel_head_cache: wire shape, LRU+caps, schema reset,
corrupt-row skip)
- `just test-unit` — 632 passed (buzz-core/auth); `cargo test -p
buzz-relay --lib` — 908 passed / 0 failed
- `just check` components: fmt-check, clippy, desktop-check,
desktop-typecheck, desktop-tauri-fmt-check, desktop-tauri-clippy,
web-check, mobile-check, file-size-check — all green
- `just desktop-build`, `web-build`, `desktop-tauri-check`,
`mobile-test` (1,661 passed) — all green

CI note: the "Unit Tests" job goes red on this PR and on `main` whenever
it hits a poisoned `rust-cache` entry (an empty-directory skeleton of
`target/sherpa-onnx-prebuilt` that `sherpa-onnx-sys` build.rs trusts),
surfacing as `could not find native static library sherpa-onnx-c-api` in
`buzz-voice` — a crate this PR doesn't touch. Deleting the cache entry
and rerunning turned the job green at `0c492366d` (28/28); it re-poisons
on the next `main` push until the workflow clears that directory after
cache restore.

Reviewed in-channel by Wren (9 / 9 / 9.5) and Eva (9 / 9 / 9), and
line-by-line by me before opening; the staleTime fix re-verified by Wren
and me independently; the relay-reconnect test fix bisected and verified
by me.

---------

Signed-off-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Signed-off-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Signed-off-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Signed-off-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>
Co-authored-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Co-authored-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Co-authored-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Co-authored-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>

* fix(desktop): keep member runtime status off the UI thread (#6445)

## Summary
- skip managed-agent runtime discovery when the members sidebar has no
local managed bots
- run runtime listing disk, process, and mutex work on Tauri’s blo…

…ock#6456)

Switching channels triggered a full-roster fetch (kind:39002 plus a
kind:0 profile batch with every member pubkey as an author) in the
common case, and several render paths walked the full roster per render.
None of this scales past a few hundred members; the product target is
10k+.

- **Members query staleTime 30s → 5min.** Every membership change the
client can observe already invalidates the key explicitly: live
join/leave system messages for the active channel, member-added/removed
notifications for the current identity, and all membership mutations —
including previously-uncovered direct write paths (moderation kick,
agent-deletion cleanup), which now invalidate through a shared helper.
The 30s window bought correctness we already had and charged a roster
fetch per switch.
- **ChannelMembersBar no longer mounts the roster query for non-DM
channels** — the count renders from the channel summary, and the
private-channel huddle gate accepts `channel.isMember` (derived from the
same kind:39002 event as the roster's self entry).
- **Roster-derived lookups are cached on roster identity**
(`rosterDerivations.ts`): role map, agent-member subset, member/bot
pubkey sets. These were rebuilt O(members) on every live message /
profile re-key. React Query's structural sharing keeps the roster
identity stable, so each derivation computes once per distinct roster.
- **Backend: the kind:0 profile join in `get_channel_members` is capped
at the first 500 members** (roster order). Members past the cap keep
`display_name: None` (UI falls back to pubkey labels and profile
caches); `role=="bot"` agent flags are roster-derived and unaffected.
Full roster pagination is the structural follow-up.
- **Composer keystroke path**: `useCanAddChannelMembers` re-scanned
channels + roster per keystroke; now memoized on data identities,
sharing the cached pubkey set.

### Measured / estimated impact

| metric | before | after |
|---|---|---|
| roster fetches while switching (live trace) | nearly every switch | ≤1
per channel per 5 min |
| roster fetch cost on the wire (live, 51-member channel) | 273ms per
fetch | amortized away |
| kind:0 `authors` filter size at 10k members | ~670KB per request (~67
B/pubkey) | capped at 500 authors (~34KB) |
| warm-switch longtask at 10k members (mock harness, 4× throttle) |
364ms | 318ms |
| per-render roster walks (role map, agent sets) at 10k members |
O(members) per live message | once per distinct roster |

Deferred deliberately: protocol-level roster pagination and removing
`memberPubkeys` from channel summaries (needs relay support).

---------

Signed-off-by: Max Lampert <[email protected]>

… sends (block#6572)

## Summary

Lands the build-now items from the desktop latency plan
(#ui-performance-deep-dive) as one change. Every perceived-latency hot
path a user hits on launch, channel open, thread open, and reply send
drops one or more round trips.

**A1 — persisted channel heads (the big one).** Native WAL SQLite cache
(`desktop/src-tauri/src/channel_head_cache.rs`) keyed by `{pubkey,
relayUrl}` scope, 32 rows/scope LRU, 1 MiB per-row drop cap,
schema-version reset, corrupt-row tolerance, checkpointed on shutdown.
Three blocking-pool commands: `channel_head_cache_load` / `_store` /
`_clear`. On the renderer side, `CommunityQueryProvider` kicks off
hydration of up to 12 heads when it constructs the query client — the
app, splash and relay preconnect mount immediately; only
`useChannelMessagesQuery` awaits the seed (`channelHeadHydration`), then
consumes a one-shot hydrated gate so a hydrated channel pays **zero**
`get_channel_window` calls on mount and exactly **one** on the
post-subscription refresh, whose response replaces page zero wholesale.
That refresh fires whether live-subscription setup succeeds or fails,
and is sequenced behind hydration so it is always a distinct
authoritative fetch (see Review follow-ups). Bounds-only persisted heads
(zero rows) are not hydrated and take the cold loading path. The
timeline loading latch recognizes native-hydrated rows as restart-safe
so they paint immediately instead of holding a skeleton. The cache is a
paint accelerator only — the relay response is always authoritative.
Replaces the legacy localStorage `messageSnapshot.ts` (removed, -401
lines).

Kill switch: `VITE_BUZZ_CHANNEL_HEAD_CACHE=off` at build time or
`localStorage["buzz-channel-head-cache"] = "off"` at runtime. Cache is
cleared on community removal and scoped per identity, so a replaced
signer never sees the previous identity's rows.

**B1 — thread aux in one response.** Relay thread filters accept
`include_aux`; the bridge appends the same authorized two-hop
reactions/edits/deletions closure a channel window gets
(`build_aux_query` shared with the window path). Renderer
`useThreadReplies` drops its two follow-up aux fetches. `next_cursor` is
computed from reply-kind rows only since aux rows are unpaged.
Documented in `docs/bridge-channel-window.md`. Thread queries keep
`staleTime: 0` (`bcfe04e2f`): an earlier revision raised it to 30s,
which CI's `thread-unread.spec.ts` caught — once the user leaves a
channel, the live subscription stops feeding that thread's cache, so a
reopen must always take the (now single) authoritative read.

**B2 — cached root on reply send.** `send_channel_message` gains
`root_event_id`; when the renderer already holds the parent (channel or
thread cache) it passes the NIP-10 root, and native signs without the
relay round trip that `resolve_thread_ref` used to make. Strict hex
parse; `root_event_id` requires `parent_event_id`; absent root falls
back to the existing relay resolution. The renderer never sends a
guessed root.

**B4** general HTTP pool idle 10s→300s, max idle per host 1→2. **B5**
relay preconnect fires as soon as identity is ready instead of waiting
for `requestIdleCallback`. One e2e test (`relay-reconnect.spec.ts`
"service restart close resets accumulated backoff") had been relying on
the idle-callback batching to skip past its own seeded dial failures
before the channel list painted; `8133d70bb` makes it wait for the
connected state instead (test-only, still fails with the 1012 backoff
reset disabled). **B6** profile freshness 60s→10 min (both the in-memory
entry check and the query `staleTime`). Tradeoff: another user's
display-name/avatar edit can take up to 10 min to propagate to a client
that already holds their profile (relay reconnect refetches
`users-batch` but resolves from the still-fresh per-pubkey entry); your
own edits still evict the entry immediately (`evictUsersBatchEntries` in
`useUpdateProfileMutation`).

### Related issue
Follows block#6456/block#6457/block#6459/block#6460 (already merged). block#6455 is the
measurement instrument and is intentionally not folded in. No duplicate
PR found.

### Review follow-ups
Addressing Carl's reviews
[5001114109](block#6572 (review))
and
[5002596542](block#6572 (review)),
each pushed as new commits (no rebase):

- `4f06b7770` fix(desktop): mount app while channel heads hydrate;
always revalidate — provider no longer gates children on the cache load;
`refreshAfterSubscribe` runs on subscribe failure too; bounds-only heads
skipped at seed; seed merges into an existing window store. +3 tests.
- `35834cb31` fix(relay): drain aux closure hops across the page clamp —
`query_all_pages` walks the `(created_at, id)` keyset via
`until`/`before_id` until a short page (`AUX_PAGE_LIMIT` =
`DEFAULT_MAX_PAGE_LIMIT`, `AUX_MAX_PAGES` = 64 warn+truncate) so
one-shot `limit: 1000` newest-first no longer drops the oldest
edits/deletions. +3 tests; `docs/bridge-channel-window.md` updated.
- `db21b0531` merge of `origin/main` `e23632941` (block#6558, block#6312 — no
overlap).
- `5a5566c0f` fix(desktop): sequence post-subscribe refresh behind
channel head hydration — `refreshChannelWindowMessages` awaits
`channelHeadHydration()` and, for a hydration-seeded query (`data !==
undefined && dataUpdatedAt === 0`), the in-flight snapshot fetch before
invalidating. Without this, a subscription that settles before the
SQLite load invalidated a data-less in-flight query; TanStack dedupes
that onto the existing fetch (`query-core` `fetch()` only cancels when
`state.data` exists), which returned the seeded snapshot — 0
authoritative fetches. Regression test reproduces Carl's exact ordering
(fails at `35834cb31` with 0 calls), plus a cold-channel guard that the
fix does not double-fetch.
- `b129231c8` fix(desktop): let concurrent post-hydration refreshes
share one window fetch — found independently by Max and Wren reviewing
`5a5566c0f`: subscribe settlement + reconnect both wake on the same
snapshot promise and both invalidate; the second (default
`cancelRefetch: true`) cancelled and replaced the first authoritative
fetch (3 queryFn calls, not 2, and the cancelled Tauri invoke still hits
the relay). The seeded branch now invalidates with `cancelRefetch:
false` so a second waker joins the in-flight fetch; cold/warm keep the
default (`test_canceled_stale_fetch_cannot_overwrite_catch_up_window`
relies on it). Concurrent regression test fails at `5a5566c0f` with 3.

### Testing
At `b129231c8` (PR head; verified in one shell with `git rev-parse HEAD`
= `b129231c8`): `pnpm check`, `tsc --noEmit`, desktop unit 5,393 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `5a5566c0f`: `pnpm check`, `tsc --noEmit`, desktop unit 5,392 / 0,
Playwright `boot-splash` + `channel-head-restart` + `relay-reconnect` +
`relay-reconnect-affordance` + `thread-unread` 34 / 34 on a fresh
`build:e2e`, pre-push hooks green.

At `35834cb31`: desktop unit 5,390 / 0; `cargo test -p buzz-relay --lib`
910 / 0; fmt + clippy `-D warnings` clean; Playwright 32 / 32 (same
specs minus affordance); GitHub CI green on every job except Smoke (3)
(unrelated project-review row-count + messaging timing flake, per Carl)
and Unit Tests (sherpa cache skeleton, below).

Earlier, all at `8133d70bb` (this PR head is `0c492366d` = 8133d70 + a
comments-only commit correcting two `profile/hooks.ts` freshness
comments from 60s to 10 min; pre-push desktop check/typecheck/test
5,387/0 re-ran at 0c49236) in one shell; `origin/main` = `040b203f7`
at PR open, since moved to `4baccd539` (block#6558, mobile only — zero file
overlap, `git merge-tree` clean):

- `just desktop-test` — 5,387 passed / 0 failed (includes new hook-level
call-count test: cold = 1, stale-prefetched = 1, hydrated = 0 on mount
then 1 on invalidate with wholesale replacement)
- Playwright smoke `relay-reconnect.spec.ts` + `thread-unread.spec.ts` +
`channel-head-restart.spec.ts` — 30/30 (thread-unread was 8/13 at
`7acbf951b`; relay-reconnect was 15/16 at `bcfe04e2f`). The restart spec
persists a head, reloads into a fresh mock relay with the head fetch
held 5s, asserts the persisted row paints within 2s, exactly one
`get_channel_window` after open, and the stale row is removed when the
authoritative page lands.
- `pnpm typecheck`, `pnpm check` — clean

At `7acbf951b` (everything except the two-line `useThreadReplies.ts`
staleTime revert and the test-only `relay-reconnect.spec.ts` change),
also green in one shell:
- `just desktop-tauri-test` — 2,859 passed / 0 failed across the
workspace (channel_head_cache: wire shape, LRU+caps, schema reset,
corrupt-row skip)
- `just test-unit` — 632 passed (buzz-core/auth); `cargo test -p
buzz-relay --lib` — 908 passed / 0 failed
- `just check` components: fmt-check, clippy, desktop-check,
desktop-typecheck, desktop-tauri-fmt-check, desktop-tauri-clippy,
web-check, mobile-check, file-size-check — all green
- `just desktop-build`, `web-build`, `desktop-tauri-check`,
`mobile-test` (1,661 passed) — all green

CI note: the "Unit Tests" job goes red on this PR and on `main` whenever
it hits a poisoned `rust-cache` entry (an empty-directory skeleton of
`target/sherpa-onnx-prebuilt` that `sherpa-onnx-sys` build.rs trusts),
surfacing as `could not find native static library sherpa-onnx-c-api` in
`buzz-voice` — a crate this PR doesn't touch. Deleting the cache entry
and rerunning turned the job green at `0c492366d` (28/28); it re-poisons
on the next `main` push until the workflow clears that directory after
cache restore.

Reviewed in-channel by Wren (9 / 9 / 9.5) and Eva (9 / 9 / 9), and
line-by-line by me before opening; the staleTime fix re-verified by Wren
and me independently; the relay-reconnect test fix bisected and verified
by me.

---------

Signed-off-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Signed-off-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Signed-off-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Signed-off-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>
Co-authored-by: Perci <5a968df9a7494b4e019b9ecf739e088ba61097b4312124e9a88ae5b42e3f5f3e@buzz.block.builderlab.xyz>
Co-authored-by: Max <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Co-authored-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Co-authored-by: Meli <5aaa86bce934fc3445fc254aab560a40923f10252f92107e665073dede0e04d3@buzz.block.builderlab.xyz>