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/wings-of-the-kunpeng.srt

@@ -0,0 +1,75 @@
+1
+00:00:25,179 --> 00:00:31,600
+Deep beneath the silent waves where no one ever sees
+
+2
+00:00:31,600 --> 00:00:38,159
+Sleeps a tiny silver fish dreaming of the breeze
+
+3
+00:00:38,159 --> 00:00:44,500
+Counting every falling tear that drops into the tide
+
+4
+00:00:44,500 --> 00:00:49,859
+Waiting for the heavy gates of heaven to divide
+
+5
+00:00:51,159 --> 00:00:57,240
+Do not fear the rising storm or shadows in the deep
+
+6
+00:00:57,240 --> 00:01:04,340
+There is still a ancient promise that the ocean keeps
+
+7
+00:01:06,339 --> 00:01:13,180
+Spread your wings and rise above the sea of clouds and rain
+
+8
+00:01:13,180 --> 00:01:19,739
+Never let the mortal world bind you with a chain
+
+9
+00:01:19,739 --> 00:01:25,959
+Fly across the mountain peaks where immortal rivers flow
+
+10
+00:01:25,959 --> 00:01:34,140
+I will watch you turn to wind and let your spirit go
+
+11
+00:01:49,099 --> 00:01:54,959
+Cycles of a thousand years are written in the stars
+
+12
+00:01:54,959 --> 00:02:01,319
+Time will heal the broken shells and wash away the scars
+
+13
+00:02:01,319 --> 00:02:07,579
+When the red camellia blooms upon the snowy shore
+
+14
+00:02:07,579 --> 00:02:14,319
+We will meet beyond the sky and part ways nevermore
+
+15
+00:02:16,860 --> 00:02:23,520
+Spread your wings and rise above the sea of clouds and rain
+
+16
+00:02:23,520 --> 00:02:30,180
+Never let the mortal world bind you with a chain
+
+17
+00:02:30,180 --> 00:02:36,259
+Fly across the mountain peaks where immortal rivers flow
+
+18
+00:02:36,259 --> 00:02:44,300
+I will watch you turn to wind and let your spirit go
+
+19
+00:02:48,839 --> 00:03:26,300
+Ah-ah-ah, fly into the wind...