- Rewrite the tool branch of getActivityHeadline (agentSessionTranscriptPresentation.ts)
to use the descriptor's terse action tier — verb + compact object, e.g.
"Read foo.ts" — instead of "label · full preview" ("Read file ·
src/agents/ui/foo.ts"), so the composer pill's 200px cap shows the
informative part of the action instead of ellipsizing a long preview
- Basename path-like objects only (file-read / file-edit / skill-read);
shell commands stay whole since they legitimately contain "/", and file
edits reuse the already-basenamed fileEditSummary.filename
- Fall back to the previous "label · preview" format when a descriptor
carries no action (older descriptors)
- Export the existing private basename() from agentSessionFileEditDiff.ts
rather than adding a third copy
- Document the terse format on deriveActivityPillLabel (composerLiveActivity.ts);
no logic change — the pill picks it up via getActivityHeadline, whose only
production consumer is the pill
- Tests: update presentation expectations ("Send Message · abc" → "Sent abc"),
add cases for file-read/file-edit basenaming, shell commands kept whole,
and the no-action fallback; add a pill-level terse-headline case to
composerLiveActivity.test.mjs
Co-authored-by: Taylor Ho <taylorkmho@gmail.com>
Signed-off-by: Taylor Ho <taylorkmho@gmail.com>
