Files
multica/server
Eve cd79a72124 fix(codex): record file edit payload for patch_apply events
Both Codex protocol paths recorded a file edit as a bare call ID and set no
payload, so a run that edited six files left six blank, unexpandable rows in
the transcript. The same task on Claude or Grok showed a readable diff, and
the branch Codex pushed was the only surviving record of what it changed
(GH #6157).

The omission was specific to this one tool, not to the adapter: the
exec_command handlers directly above already captured command and output.

Both paths are fixed, since the protocol is sniffed at runtime. Their wire
shapes differ more than they appear, and the normalizer reconciles that:

  - legacy patch_apply_begin/end carry map[path]FileChange, internally tagged
    on `type`, where add/delete hold whole-file `content` and only update
    holds a `unified_diff` plus `move_path`. There is no diff for every case,
    so the normalized form keeps diff and content as alternatives.
  - v2 fileChange items carry an ordered array of {path, kind, diff} where
    `kind` is an object, not a string — reading it as a string silently
    yields "" and loses the add/delete/update distinction.
  - status spellings differ too: legacy is snake_case, v2 is camelCase and
    adds inProgress. Both normalize onto one vocabulary, and a legacy event
    predating `status` falls back to its `success` bool.

Legacy map iteration is sorted by path so a replayed event does not reshuffle
the file list.

Completion events now also produce a non-empty output (status, file count,
and any apply_patch stdout/stderr), because an empty output renders as an
unexpandable blank row just like a missing input.

Anything unrecognised — absent, wrongly typed, or malformed changes — returns
no payload, preserving exactly the previous degradation rather than risking
the transcript.

Total diff/content bytes are bounded at 64 KiB with UTF-8-safe truncation,
recording `truncated` and `original_bytes`; paths and kinds always survive,
since they are what a reviewer needs when the body is gone. The bound is
deliberately scoped to this new payload: other providers stream tool inputs
through unbounded, and clamping them here would silently truncate
transcripts that render correctly today. Unifying the limit at the
persistence boundary is left as a follow-up.

Verified: the new tests reproduce the reported symptom (Input:map[],
Output:"") against the previous call sites and pass now; ./pkg/agent and
./pkg/redact green, go vet and gofmt clean.

Co-authored-by: multica-agent <github@multica.ai>
2026-07-30 12:26:17 +08:00
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