post: generating subtitles for songs that ship without timestamps

Tutorial on turning untimed AI-generated audio into LRC + SRT: align ASR word
timestamps against the KNOWN lyrics (SequenceMatcher) instead of trusting a
transcript, then a governor that rejects impossible anchors, refills runs by
unit-proportional duration, and enforces a 1.2 s minimum line gap.

Ships 18 English songs (342 subtitle lines, mean anchor coverage 0.96, 9/18
fully anchored) with synced lyrics plus downloadable .srt per track. Documents
both player bugs and the headless-Chrome numeric probe that finally caught them.

public/subs/whale-in-the-milky-way.srt

@@ -0,0 +1,79 @@
+1
+00:00:12,099 --> 00:00:15,700
+Ah-ah-ah, ooh-ooh...
+
+2
+00:00:15,700 --> 00:00:21,859
+Up above the sleeping town where all the rooftops end
+
+3
+00:00:21,859 --> 00:00:27,940
+Swims a giant silver whale that wants to be my friend
+
+4
+00:00:27,940 --> 00:00:34,340
+Ripples in the Milky Way are washing on the shore
+
+5
+00:00:34,340 --> 00:00:40,979
+Leaving little seashells by my bedroom door
+
+6
+00:00:40,979 --> 00:00:47,280
+Can you hear the quiet song echoing in space?
+
+7
+00:00:47,280 --> 00:00:58,439
+Every lonely little star has found a hiding place
+
+8
+00:00:59,600 --> 00:01:06,260
+Float away, float away, into the velvet blue
+
+9
+00:01:06,260 --> 00:01:12,739
+I am sending all my gentle lullabies to you
+
+10
+00:01:12,739 --> 00:01:19,099
+Through the clouds of stardust and the galaxies afar
+
+11
+00:01:19,589 --> 00:01:26,079
+You are never lost because I see how bright you are
+
+12
+00:01:38,820 --> 00:01:44,560
+Paper boats upon the sea of infinite delight
+
+13
+00:01:44,560 --> 00:01:51,079
+Carrying our tiny dreams across the quiet night
+
+14
+00:01:51,079 --> 00:01:57,420
+Hold my hand and do not fear the deep and silent sky
+
+15
+00:01:57,420 --> 00:02:04,140
+We can ride the silver whale and watch the world go by
+
+16
+00:02:04,140 --> 00:02:10,259
+Float away, float away, into the velvet blue
+
+17
+00:02:10,259 --> 00:02:16,740
+I am sending all my gentle lullabies to you
+
+18
+00:02:16,740 --> 00:02:23,020
+Through the clouds of stardust and the galaxies afar
+
+19
+00:02:23,520 --> 00:02:30,060
+You are never lost because I see how bright you are
+
+20
+00:02:32,739 --> 00:02:38,099
+Goodnight, little star...