Decode opaque opp_repl errors into actionable fixes. Maps every common failure mode ("Building X failed", exit code 127, "Class not found", scalar/stderr None on ERROR, namespace mismatch) to its root cause and remedy. Load when a build or run fails and the immediate output gives no useful clue — th
Decode opaque opp_repl errors into actionable fixes. Maps every common failure mode ("Building X failed", exit code 127, "Class not found", scalar/stderr None on ERROR, namespace mismatch) to its root cause and remedy. Load when a build or run fails and the immediate output gives no useful clue — this skill tells you WHERE the real information hides and HOW to extract it without leaving opp_repl.