Jaayden HalkoandHugo Dutka 64d2d8a108 feat(coderd/x/chatd): record live tool execution stamps in the message part buffer (#28361) ...

**Stack**: #28359 → #28360 → **#28361 (this PR)** → #28362

During local tool execution, buffer episodes now record when each
tool-call occurrence actually starts and finishes, via
`RecordToolStart`/`RecordToolCompletion`/`ToolCompletions` on the
message part buffer. Occurrences are keyed by unresolved-call position,
so gaps left by rejected calls and duplicate tool-call IDs stay
distinct: `partitionAmbiguousToolCalls` additionally returns the allowed
calls' input positions, and generation's `chatloop.ToolBillingRecorder`
implementation translates dispatch-order stamps back through them.

Mechanism only: nothing reads the stamps yet. The final PR in the stack
uses them to bill interrupted tool batches on a dedicated usage record
committed alongside their synthesized cancellation rows.

Third of a four-PR stack splitting #28211. Stacked on #28360. Refs
CODAGT-928
(https://linear.app/codercom/issue/CODAGT-928/track-local-tool-execution-for-agent-runtime).

---------

Co-authored-by: Hugo Dutka <hugo@coder.com>

2026-08-25 16:57:27 +07:00

..

export_test.go

…

main_test.go

…

message_part_buffer_test.go

feat(coderd/x/chatd): record live tool execution stamps in the message part buffer (#28361)

2026-08-25 16:57:27 +07:00

message_part_buffer.go

feat(coderd/x/chatd): record live tool execution stamps in the message part buffer (#28361)

2026-08-25 16:57:27 +07:00