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/tiny-borrowed-shoes.srt

@@ -0,0 +1,83 @@
+1
+00:00:11,560 --> 00:00:14,599
+Underneath the floorboards where the shadows play
+
+2
+00:00:14,599 --> 00:00:18,320
+I tied a little ribbon at the break of day
+
+3
+00:00:18,320 --> 00:00:22,019
+A button for a table, a thimble for a cup
+
+4
+00:00:22,019 --> 00:00:26,140
+I climbs the ivy ladder when the sun comes up
+
+5
+00:00:27,760 --> 00:00:31,420
+Sugar on the windowsill, a feather in my hand
+
+6
+00:00:31,420 --> 00:00:35,219
+The garden is a jungle and a wonderland
+
+7
+00:00:35,219 --> 00:00:38,840
+Careful not to wake the cat sleeping by the door
+
+8
+00:00:40,000 --> 00:00:43,020
+Tip-toe in my borrowed shoes across the wooden floor
+
+9
+00:00:44,460 --> 00:00:48,100
+Fly away, little breeze, carry me along
+
+10
+00:00:48,100 --> 00:00:51,899
+Through the clover and the leaves, singing my own song
+
+11
+00:00:51,899 --> 00:00:56,100
+Though the world is wide and tall, and I am very small
+
+12
+00:00:57,579 --> 00:01:02,520
+In the secret morning light, I can have it all
+
+13
+00:01:09,620 --> 00:01:12,239
+Dewdrops on the dandelion shining like a crown
+
+14
+00:01:12,239 --> 00:01:15,980
+I catch a floating parachute and spin around and down
+
+15
+00:01:15,980 --> 00:01:19,620
+If you hear a tiny laugh hiding in the wall
+
+16
+00:01:19,620 --> 00:01:25,159
+That is just my secret song, answering your call
+
+17
+00:01:27,260 --> 00:01:30,719
+Fly away, little breeze, carry me along
+
+18
+00:01:30,719 --> 00:01:34,579
+Through the clover and the leaves, singing my own song
+
+19
+00:01:34,579 --> 00:01:38,420
+Though the world is wide and tall, and I am very small
+
+20
+00:01:40,319 --> 00:01:44,980
+In the secret morning light, I can have it all
+
+21
+00:01:51,980 --> 00:01:55,159
+La-la-la, in the morning light...