v0.144.1 code: the wrapper survives a dead reader (BrokenPipe) so a killed pass still keeps its report; the agent looks for kept copies every 5 min (R-868, measured live)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

configs/felhom-os-apply

@@ -263,7 +263,14 @@ class Runner:
         os.replace(tmp, NONCE_FILE)
 
     def log(self, line):
-        print(line, file=sys.stderr, flush=True)
+        # R-868 (v0.144.1): the agent that reads stderr may be GONE (killed mid-pass, measured live on demo-hp
+        # 2026-10-05): the write then raises BrokenPipeError, and v0.144.0 died right there — after apt had installed
+        # everything, before the report copy was saved. A dead reader must never stop the pass; the journal still
+        # gets every line. Pinned by AgentDiesMidPass.
+        try:
+            print(line, file=sys.stderr, flush=True)
+        except OSError:
+            pass
         try:
             subprocess.run(["logger", "-t", "felhom-os-apply", line], timeout=10)
         except Exception:
@@ -1453,7 +1460,11 @@ def main(argv, runner=None, environ=None):
             r.save_report(argv[2], a.report)
         except Exception as e:
             r.log(f"os-apply: the report copy could not be saved (the run is unaffected): {e}")
-    print("OSAPPLY-REPORT " + json.dumps(a.report, sort_keys=True))
+    try:
+        print("OSAPPLY-REPORT " + json.dumps(a.report, sort_keys=True), flush=True)
+    except OSError:
+        # R-868: nobody reads stdout any more (the agent was killed); the copy above carries the report.
+        sys.stdout = open(os.devnull, "w")
     return rc