feat(monitor): trace terminal-status exit-code recovery from log footer (#1927)

The three reconciliation branches in getIsolationSessionState now all emit a
[VERBOSE] trail (req #6): stale-executing flip, no-live-record recovery, and —
newly — the terminal-status branch where start-command reports a terminal
status with a missing/sentinel exit code and the real code (e.g. 137) is
recovered from the authoritative log footer. This leaves a greppable trace of
exactly which path corrected an unreported kill, for the next iteration.

Author: konard

src/session-monitor.lib.mjs

@@ -396,6 +396,9 @@ async function getIsolationSessionState(sessionName, sessionInfo, options = {})
           if (footer?.finished) {
             exitCode = footer.exitCode;
             const correctedStatus = classifyExitStatus(footer.exitCode) || statusResult.status;
+            if (verbose) {
+              console.log(`[VERBOSE] Session ${sessionName} reported terminal '${statusResult.status}' with exit ${statusResult.exitCode}; recovered real exit ${exitCode} (${correctedStatus}) from log footer`);
+            }
             return { running: false, exitCode, status: correctedStatus, statusResult: { ...statusResult, status: correctedStatus, exitCode } };
           }
         }