feat(audio.cpp): if github binary download fails, automatically start building from source

1 files changed, 14 insertions, 10 deletions

diff --git a/app/backends/audiocpp/build.py b/app/backends/audiocpp/build.py
index f840193..e3536cf 100644
--- a/app/backends/audiocpp/build.py
+++ b/app/backends/audiocpp/build.py
@@ -138,22 +138,26 @@ def _update_prebuilt(checkout: Path, backend: Optional[str], *,
     """The update route for a prebuilt (release-downloaded) install.
 
     Source builds update by rebuilding after a git pull; a prebuilt
-    install instead re-downloads when upstream published a newer release
-    (the marker's tag is compared against the latest release tag). The
-    recorded/detected backend selects the asset, mirroring what was
-    originally installed. A GitHub outage is not fatal — the installed
-    binary keeps working. Returns the install exit code (0 when already
-    current or when the check could not run).
+    install instead re-downloads when upstream published a newer release.
+    The current-version check resolves the newest tag from the release
+    page's redirect (no API quota); the API is only consulted by the
+    re-download itself, for the checksum digests. The recorded/detected
+    backend selects the asset, mirroring what was originally installed.
+    A GitHub outage is not fatal — the installed binary keeps working.
+    Returns the install exit code (0 when already current or when the
+    check could not run).
     """
     marker = _prebuilt.installed_release(checkout, backend)
-    release = _prebuilt.fetch_latest_release()
-    if release is None:
+    tag = _prebuilt.resolve_latest_tag()
+    if tag is None:
+        release = _prebuilt.fetch_latest_release()
+        tag = str(release.get("tag_name") or "") if release else ""
+    if not tag:
         print("[WARNING] Could not check GitHub for a newer prebuilt "
               "audiocpp_server; keeping the installed one ("
               f"{marker.get('tag') if marker else 'unknown'}).")
         return 0
-    tag = str(release.get("tag_name") or "")
-    if marker and tag and tag == marker.get("tag"):
+    if marker and tag == marker.get("tag"):
         print(f"[OK] Prebuilt audiocpp_server is current ({tag}).")
         return 0
     print(f"[INFO] audio.cpp {tag} is available; downloading the prebuilt "