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/waltz-of-the-dandelion.srt

@@ -0,0 +1,71 @@
+1
+00:00:17,620 --> 00:00:22,559
+One, two, three, the summer breeze is knocking at my door
+
+2
+00:00:22,559 --> 00:00:30,620
+Dancing with the sunlit dust upon the wooden floor
+
+3
+00:00:30,620 --> 00:00:38,399
+Out across the grassy hill the dandelions grow
+
+4
+00:00:38,399 --> 00:00:46,520
+Waiting for a little breath to tell them where to go
+
+5
+00:00:48,079 --> 00:00:53,280
+La-la-la, wherever you may fly
+
+6
+00:00:53,280 --> 00:00:57,280
+Underneath the big and gentle sky
+
+7
+00:00:57,280 --> 00:01:04,379
+Even when the seasons change and winter turns to spring
+
+8
+00:01:06,060 --> 00:01:12,480
+I will still remember every little song we sing
+
+9
+00:01:27,359 --> 00:01:34,620
+Drops of rain upon a leaf are rolling into one
+
+10
+00:01:34,620 --> 00:01:42,459
+Shining like a diamond in the afternoon sun
+
+11
+00:01:42,459 --> 00:01:50,260
+If you ever lose your way or feel a little sad
+
+12
+00:01:50,260 --> 00:01:58,540
+Think about the quiet days and all the smiles we had
+
+13
+00:02:00,179 --> 00:02:05,280
+La-la-la, wherever you may fly
+
+14
+00:02:05,280 --> 00:02:09,139
+Underneath the big and gentle sky
+
+15
+00:02:09,139 --> 00:02:16,340
+Even when the seasons change and winter turns to spring
+
+16
+00:02:17,899 --> 00:02:24,479
+I will still remember every little song we sing
+
+17
+00:02:25,959 --> 00:02:28,080
+La-la-la, la-la-la...
+
+18
+00:02:29,460 --> 00:02:34,439
+See you again someday.