fix: logging handler must not crash its caller on reopen failure

When decnet.system.log is root-owned (e.g. created by a pre-fix 'sudo
decnet deploy') and a subsequent non-root process tries to log, the
InodeAwareRotatingFileHandler raised PermissionError out of emit(),
which propagated up through logger.debug/info and killed the collector's
log stream loop ('log stream ended ... reason=[Errno 13]').

Now matches stdlib behaviour: wrap _open() in try/except OSError and
defer to handleError() on failure. Adds a regression test.

Also: scripts/profile/view.sh 'pyinstrument' keyword was matching
memray-flamegraph-*.html files. Exclude the memray-* prefix.

decnet/logging/inode_aware_handler.py

@@ -48,5 +48,13 @@ class InodeAwareRotatingFileHandler(logging.handlers.RotatingFileHandler):
                     self.close()
             except Exception:  # nosec B110
                 pass
-            self.stream = self._open()
+            try:
+                self.stream = self._open()
+            except OSError:
+                # A logging handler MUST NOT crash its caller. If we can't
+                # reopen (e.g. file is root-owned after `sudo decnet deploy`
+                # and the current process is non-root), defer to the stdlib
+                # error path, which just prints a traceback to stderr.
+                self.handleError(record)
+                return
         super().emit(record)