jerry/buzz

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Will Pfleger cc528dbe05 feat(agents): request summarized Claude thinking and label empty rows (#8051 )

Claude Code agents on Opus showed Thinking rows that opened to nothing.
Opus returns no readable thinking unless Claude Code is asked for
summaries, and Buzz never asked. Sonnet returns readable thinking either
way.

**Request summaries from Claude Code.** `session_new_full` now adds
`_meta.claudeCode.options.extraArgs: {"thinking-display": "summarized"}`
for the Claude adapter. claude-agent-acp spreads `extraArgs` into the
CLI's arguments; 0.36.1, 0.60.0 and 0.66.0 all read the same shape. The
value is merged into the existing `_meta`, so `systemPrompt` and
`sessionTitle` are kept. `session_new_full` is the only place Buzz sends
`session/new`, so agent sessions and model discovery both get it.

**Only for a CLI that accepts the flag.** `--thinking-display` first
shipped in Claude Code 2.1.94, and older CLIs exit on unknown flags,
which would fail every session start. When the adapter is spawned, Buzz
runs `$CLAUDE_CODE_EXECUTABLE --version` once with a 5-second limit,
reading at most 256 bytes of output and killing its whole process group
on timeout, and sends the flag only on 2.1.94 or newer. The flag is left
off, and sessions start exactly as before, when:

- the CLI is older than 2.1.94;
- `CLAUDE_CODE_EXECUTABLE` is unset (the adapter then runs its own
bundled CLI, which Buzz can't inspect) or empty;
- the binary hangs, fails, or prints anything other than a clean
`major.minor.patch` version;
- `BUZZ_ACP_LAUNCH_PREFIX` is set, since the wrapper can change which
CLI the adapter actually runs.

The result is logged once at debug level.

**Label rows that still have no text.** A Thinking row whose text is
empty or only whitespace keeps its header and shows a muted "No readable
reasoning tokens", with nothing to expand. This covers models or CLIs
that still return no readable thinking. If text arrives later in the
same row, it renders as an expandable section as before.
`ThoughtActivity` is the only component that draws Thinking rows.

---------

Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: Hayt <211b96e6a2b7f45fd4047988976c7bbbeeda0c15f3ae7b32eec20834b5a55118@buzz.block.builderlab.xyz>

2026-10-02 18:46:47 +00:00