JS-007: `main()` script load — wrong file, `ftell` -1 → `malloc(0)` OOB, ignored `fread`

Now: DONE

main() opens argv[1] instead of the parsed script_file, trusts ftell unchecked, and ignores the fread count. Method: Issues.

Input

Context

main.cpp:212-222 opens argv[1] instead of the parsed script_file → wrong file with --eval X file.js.
ftell can return -1 → malloc(0) then script[-1] OOB.
The fread return is ignored → a short read leaves uninitialised script bytes before the NUL.
WITH_JS-gated WIP.

Goals

The parsed script_file is loaded; a failed ftell / short fread is detected, not silently mis-handled.

Constraints

Use script_file; check len >= 0; check the fread count.

WIP

Design decisions

(open) Replace argv[1] with script_file; guard ftell and fread.

TODOs

Repro-first: --eval X file.js runs file.js; an empty/unreadable file does not crash.
Apply the three guards.

Blockers

None.

Outcome

LANDED 24f890ed (2026-06-16): main() opens the parsed script_file (not argv[1]), errors on ftell < 0, checks malloc, and NUL-terminates at the actual fread count; new JABCscriptFile ctest (test/run-007.sh) is red-before/green-after on the wrong-file open.