fix: strip NUL-padded CALLSIGN instead of showing raw bytes

Some peers NUL-pad instead of space-pad; reuse the existing
normalize_fixed_width_ascii helper instead of a plain .strip().

src/adn_server/application/ident_use_cases.py

@@ -31,6 +31,7 @@ import time
 from typing import Any, Callable
 
 from ..domain import HBPF_SLT_VTERM, bytes_3, int_id
+from ..domain.hbp_protocol import normalize_fixed_width_ascii
 from .server_voice import server_voice_rf_src_bytes
 
 logger = logging.getLogger(__name__)
@@ -97,8 +98,7 @@ class IdentUseCases:
             for _peerid in peers:
                 peer_cfg = peers.get(_peerid, {})
                 if isinstance(peer_cfg, dict) and peer_cfg.get("CALLSIGN"):
-                    cs = peer_cfg["CALLSIGN"]
-                    _callsign = cs.decode("utf-8", errors="replace") if isinstance(cs, bytes) else cs
+                    _callsign = normalize_fixed_width_ascii(peer_cfg["CALLSIGN"])
                     break
             if not _callsign:
                 logger.debug("(IDENT) %s System has no peers or no recorded callsign, skipping", system)

src/adn_server/application/routing/subscription_table.py

@@ -51,6 +51,7 @@ from typing import Any
 from ...domain import bytes_3, bytes_4, int_id
 from ...domain.config_coerce import coerce_bool, parse_options_single
 from ...domain.dynamic_tg import DynamicTgEntry
+from ...domain.hbp_protocol import normalize_fixed_width_ascii
 from ..proxy.deployment import is_proxy_inject_only
 
 logger = logging.getLogger(__name__)
@@ -805,10 +806,7 @@ class SubscriptionTableMixin:
                 parts.append(f"peers_connected={len(connected)}")
                 if connected:
                     def _cs(c):
-                        v = c.get("CALLSIGN") or b""
-                        if isinstance(v, bytes):
-                            return v.decode("utf8", errors="replace").strip() or "?"
-                        return str(v).strip() or "?"
+                        return normalize_fixed_width_ascii(c.get("CALLSIGN")) or "?"
                     parts.append(
                         "peers=[%s]"
                         % ", ".join("%s/%s" % (p.get("RADIO_ID", "?"), _cs(p)) for p in connected[:10])