* [O11y] Add transcript parsers for Gemini and Cursor agents
* Handle Gemini direct-API transcript format
The Gemini agent has two output formats: the CLI format (via OpenCode
framework with part.tool/part.state) and the direct-API format (with
tool_name/parameters and separate tool_result events). The initial
parser only handled the CLI format, leaving direct-API transcripts
with all-zero metrics. This adds handling for both.
* Aggregate Gemini direct-API delta messages into single turns
Contiguous assistant delta messages are now merged into one message
event so totalTurns reflects actual conversation turns instead of 0.
* Add changeset
New run-all command auto-discovers experiments/*.ts and orchestrates
the full pipeline: fingerprint reuse, failure classification,
auto-retry of infra failures, and housekeeping.
Housekeeping runs after each experiment: keeps only the latest valid
result per (experiment, eval) pair, removes duplicates and incomplete
results, cleans up empty timestamp directories.
Supports --dry (preview), --force (ignore fingerprints), --smoke
(1 eval per experiment), and optional experiment name/glob arguments.
Jude Gao