Each line of measurements/<emulator>.jsonl now holds the whole run:
every repetition, core logs, per-frame hashes and raw timings. The gzip
data files, the data schema and the split and join code are gone, and
core_probe --record appends one line. record_version moves to 3.
The seven records are rewritten once: each new line equals its old line
joined with its data file, and rebuilds the first-layout file its id
hashes.
The seven core probe records move from Abdess/retrobios-measurements at
75e878143687 into this repository, copied byte for byte: one .jsonl per
emulator and a gzip data file per record. merge=union lets two branches
that each add a line merge.
Abdessamad Derraz