3 files changed, 11 insertions, 12 deletions
diff --git a/app/backends/audiocpp/build.py b/app/backends/audiocpp/build.py
index 9ffe429..1ad6018 100644
--- a/app/backends/audiocpp/build.py
+++ b/app/backends/audiocpp/build.py
@@ -6,10 +6,11 @@ import os
 import re
 import shlex
 import shutil
-from datetime import datetime
 from pathlib import Path
 from typing import List, Optional
 
+import logging_kit
+
 from backends import common, servers
 from backends.common import APP_DIR
 from .catalog import _BACKEND_TOKEN_RE, detect_backend, load_server_config
@@ -490,14 +491,11 @@ def _build_audiocpp_tui(emit, cancel, argv: List[str], command: str,
     cancelled build (CANCEL set) is not reported as a failure, but its
     partial output stays in the log file.
     """
-    log_path = common.LOG_DIR / (
-        f"audiocpp_build_{datetime.now():%Y%m%d_%H%M%S}.log")
-    log_path.parent.mkdir(parents=True, exist_ok=True)
-    log_handle = log_path.open("w", encoding="utf-8")
+    log_path, log_handle = logging_kit.run_artifact("audiocpp_build",
+                                                    log_dir=common.LOG_DIR)
 
     def tee(line: str) -> None:
-        log_handle.write(line + "\n")
-        log_handle.flush()
+        logging_kit.write_line(log_handle, line)
         emit(line)
 
     class _TeeWriter(io.TextIOBase):
diff --git a/app/backends/common.py b/app/backends/common.py
index 4c768b8..d25a03e 100644
--- a/app/backends/common.py
+++ b/app/backends/common.py
@@ -17,6 +17,8 @@ import urllib.parse
 from pathlib import Path
 from typing import Dict, List, Optional, Set, Tuple
 
+import logging_kit
+
 # Messages queued while the TUI is on screen, printed to the real console
 # after the curses session ends (see ui.hub.run). Build/setup steps that
 # fail inside the TUI record here so the user gets a copy-pastable command
@@ -32,8 +34,9 @@ TTS_ROOT = Path(__file__).resolve().parent.parent.parent
 # The single "everything else" directory under TTS_ROOT.
 APP_DIR = TTS_ROOT / "app"
 
-# app/logs — build/server/conversion logs (already gitignored).
-LOG_DIR = APP_DIR / "logs"
+# app/logs — build/server/conversion logs (already gitignored). Naming and
+# retention policy lives in logging_kit (streams vs. timestamped artifacts).
+LOG_DIR = logging_kit.LOG_DIR
 
 # The project's sample-voice directory: .wav files dropped here are offered
 # as the default source when a setup/configure wizard asks for a wav
diff --git a/app/backends/servers.py b/app/backends/servers.py
index 986d82a..c258398 100644
--- a/app/backends/servers.py
+++ b/app/backends/servers.py
@@ -32,9 +32,7 @@ from pathlib import Path
 from typing import Callable, List, Optional
 
 from backends import common, probe
-from backends.common import APP_DIR
-
-LOG_DIR = APP_DIR / "logs"
+from backends.common import LOG_DIR
 
 # How long to wait for a server to accept connections on its URL. First-time
 # model loads (especially qwen-tts / faster-qwen3-tts pulling weights into