vitals 0.4.0

vitals 0.4.0 includes a number of new features and performance improvements, in addition to tightening integration with Inspect's log viewer.

Features

• New claude_code() and codex() solvers evaluate the Claude Code and
  Codex coding agents on a task's dataset, so the same dataset and R scorer
  can grade both your own agent harness and an off-the-shelf coding agent.
  The agents run in a Docker sandbox via Python Inspect's inspect_swe
  package (resolved automatically with reticulate); their transcripts are
  read back into ellmer Chat objects for scoring and logging.

• New vitals_log_read() reads an eval log file back into a tibble of
  samples, reconstructing solver (and, for model-graded scorers, scorer)
  chats as ellmer Chat objects.

• Eval logs are substantially more faithful to their source chats. Reasoning
  content, standardized stop reasons, per-turn cached token counts, tool
  parameter schemas, and structured tool errors are now written to the log
  rather than dropped or approximated, and model strings follow Inspect's
  provider/model convention.

Performance improvements

• The log viewer serves log files as-is rather than parsing and re-serializing
  them, making opening a log effectively instant (previously several seconds
  for logs tens of MBs in size).

  • vitals_view() now reads only the leading bytes of each log file when
    generating the homepage; listing a directory of large logs is roughly 250x
    faster.

• Eval log files are dramatically smaller (roughly 4x for multi-turn,
  tool-heavy evals). Repeated content in a sample's events and base64 images
  in its messages are now de-duplicated into the sample's attachments
  pool, mirroring Python Inspect's behavior.

Bug fixes and minor improvements

• $log() now records its fallback temporary directory on the task and reports
  the path it wrote to when no VITALS_LOG_DIR is set, so the automatic
  $view() succeeds.

• Task$new() now assigns a valid task name when given an inline (unnamed)
  dataset, so $log() succeeds.

• vitals_bundle() now tolerates logs whose results contain no scores.

• vitals_view() will now show correct metadata for each log. Previously,
  the log viewer could display one log's metadata (task name, model, score) in place of another's, both in the log listing and when clicking into a log (#208).

• detect_pattern() now supports case_sensitive = TRUE on R 4.5 and later.

• The log viewer will now appropriately display tool calls called in parallel.