fix(cli): pair for the active community, skip stopped desktops, accept a bare relay host - #9417

Pins block/buzz at the merge of block/buzz#9417, so the bundled CLI pairs
for the open community, skips stopped desktops, takes --relay after the
subcommand and reads a bare host as https://. The help and the buzz link's
doc comment describe the new behaviour.

Co-authored-by: Duncan <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>
Signed-off-by: Will Pfleger <[email protected]>

…ty, and put buzz on PATH (#3386)

## Summary

**Keep pairings when the sign-in lapses.** If the Builderlab sign-in
expired and Buzz restarted before you signed back in, the next CLI call
deleted its pairing for good. With no saved session, Buzz reads you as
signed out with no email, and that never matched the email the pairing
was approved under (`admit` in `credential_service/pairing.rs`). A real
sign-out or account change already revokes every pairing on its own, so
that mismatch now answers "sign in again in Buzz" and keeps the pairing.
Other mismatches still revoke.

**`pair` without a relay uses the open community.** `pair` with
`[client]` alone pairs for the community open in Buzz. The page now
reports that community along with the saved ones
(`credential_pairing_communities` gains `active`). With none open, the
tool is refused without asking: "open one in Buzz, or pass --relay".
`[client, relay]` works as before, and the Allow prompt still shows the
community.

**`buzz` on PATH.** At every start, the installed app links
`~/.local/bin/buzz` to its bundled CLI at its real path. It replaces a
symlink that dangles or points at a Buzz app's CLI, and leaves any other
symlink, file or directory alone. Dev builds (`tauri::is_dev()` or a
non-release identifier), AppImages, and apps run from a mounted disk
image (`/Volumes/…`) or App Translocation skip it. On Windows, the NSIS
hooks add `$INSTDIR\bin` to the user PATH on install and remove it on
uninstall. PowerShell edits the registry value in place, so a long PATH
isn't truncated, unexpanded entries survive and nothing is added twice,
and then the change is broadcast. The README's command-line step is
updated to match.

## Testing

- New `a_pairing_survives_a_lapsed_sign_in_and_a_restart`: pair while
signed in with an email, relaunch signed out with no sign-out recorded,
probe. The pairing is kept, the probe answers "sign in again", and the
token works once signed back in.
- New `a_pairing_without_a_relay_uses_the_open_community`: refused with
no open community, then approved for it once one is set.
- New `cli_link` unit test: creates the link, relinks dangling and
Buzz-CLI links, and leaves a link to a custom CLI, files and directories
alone.
- The NSIS hook was not run locally; Windows CI builds the installer.

**Bundled CLI.** Pins block/buzz (`src-tauri/Cargo.toml`, `Cargo.lock`)
at `630922a9`, the merge of buzz#9417, which contains the previous pin
`0e6037c7`. The bundled `buzz` then pairs for the open community when no
relay is given, skips stopped desktops, accepts `--relay` after the
subcommand and reads a bare host as `https://`. `docs/buzz-help.md`
describes this, plus a lapsed sign-in keeping its pairings.

Related: [buzz#9417](block/buzz#9417)

---------

Signed-off-by: Will Pfleger <[email protected]>
Co-authored-by: Duncan <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>

Co-authored-by: mboston.Engineer <932d3b6ebea6cc83e091551ae46d1c7e7f8f7d0fa8e9cef5e6facc8544af413b@buzz.block.builderlab.xyz>

* origin/main:
  fix(mobile): require Builderlab consent for existing identities (#8823)
  feat(mobile): use HTTP/2 on iOS through app-wide URLSessions (#8897)
  fix(relay): publish a git push only when refs changed; check the protocol by refinement (#9425)
  fix(mobile): show shared chats under Solo (#9348)
  chore(release): release Buzz Desktop version 0.5.29 (#9456)
  feat(mobile): render messages with gpt_markdown 1.3.4 plusparse (#8945)
  fix(acp): bound observer retention by bytes (#7987) (#9436)
  Tune release codegen for faster/smaller binaries (#9434)
  feat(desktop): add dismissible banner pointing to the new buzz app (#9379)
  fix(mobile): keep publishing presence while the app is open (#9441)
  feat(mobile): share into Buzz from the iOS share sheet (#9433)
  fix(mobile): qualify every namesake mention and keep authored mention casing (#9325)
  fix(mobile): match browser GIF timing in the iOS reaction sheet (#9437)
  fix(mobile): play short-delay animation frames at browser speed (#9432)
  buzz-search: read profile names without the profile_name_fields function (#9397)
  buzz-db: build the community deletion lock key in Rust (#9396)
  fix(cli): pair for the active community, skip stopped desktops, accept a bare relay host (#9417)
  test(mobile): run push tests without a gateway dart-define (#9423)
  fix(mobile): never pop Home when archiving from channel settings (#9387)
  perf(acp): reduce observer CPU and lock overhead (#9381)

Signed-off-by: Matthew Boston <[email protected]>

…count-backfill

Co-authored-by: mboston.Engineer <932d3b6ebea6cc83e091551ae46d1c7e7f8f7d0fa8e9cef5e6facc8544af413b@buzz.block.builderlab.xyz>

* bostonaholic--agent-reply-count:
  fix(mobile): require Builderlab consent for existing identities (#8823)
  feat(mobile): use HTTP/2 on iOS through app-wide URLSessions (#8897)
  fix(relay): publish a git push only when refs changed; check the protocol by refinement (#9425)
  fix(mobile): show shared chats under Solo (#9348)
  chore(release): release Buzz Desktop version 0.5.29 (#9456)
  feat(mobile): render messages with gpt_markdown 1.3.4 plusparse (#8945)
  fix(acp): bound observer retention by bytes (#7987) (#9436)
  Tune release codegen for faster/smaller binaries (#9434)
  feat(desktop): add dismissible banner pointing to the new buzz app (#9379)
  fix(mobile): keep publishing presence while the app is open (#9441)
  feat(mobile): share into Buzz from the iOS share sheet (#9433)
  fix(mobile): qualify every namesake mention and keep authored mention casing (#9325)
  fix(mobile): match browser GIF timing in the iOS reaction sheet (#9437)
  fix(mobile): play short-delay animation frames at browser speed (#9432)
  buzz-search: read profile names without the profile_name_fields function (#9397)
  buzz-db: build the community deletion lock key in Rust (#9396)
  fix(cli): pair for the active community, skip stopped desktops, accept a bare relay host (#9417)
  test(mobile): run push tests without a gateway dart-define (#9423)
  fix(mobile): never pop Home when archiving from channel settings (#9387)
  perf(acp): reduce observer CPU and lock overhead (#9381)

Signed-off-by: Matthew Boston <[email protected]>