Move to checksums.md5

Server is scheduled to generate this file nightly

src/audio/audio_downloader.h

@@ -37,7 +37,7 @@ struct AudioManifestEntry {
 // and keeps the database's audio_files table in sync with what is actually
 // on disk.
 //
-// Fetches new_checksums.md5, compares each entry against the local file's MD5,
+// Fetches checksums.md5, compares each entry against the local file's MD5,
 // and re-downloads anything that is missing or whose checksum differs.
 // Files present on disk but absent from the manifest are deleted, and the
 // audio_files table is reconciled on every pass (and after each individual
@@ -68,7 +68,7 @@ public:
 
 	static constexpr const char *AUDIO_BASE_URL =
 		"https://files.radiantwavetech.com/audio/";
-	static constexpr const char *MANIFEST_FILENAME = "new_checksums.md5";
+	static constexpr const char *MANIFEST_FILENAME = "checksums.md5";
 
 private:
 	void run();
@@ -88,7 +88,7 @@ private:
 	db::DatabaseManager *db_ = nullptr;
 };
 
-// Parses new_checksums.md5 manifest text into entries. Blank lines and lines
+// Parses checksums.md5 manifest text into entries. Blank lines and lines
 // starting with '#' are ignored. Lines that don't match a known format are
 // skipped. Returns false if no valid entries were found.
 bool parseManifest(const std::string &text,