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/porridge-and-evening-smoke.srt

@@ -0,0 +1,67 @@
+1
+00:00:11,539 --> 00:00:17,039
+Smoke is rising from the roof into the purple sky
+
+2
+00:00:17,039 --> 00:00:22,839
+While the evening swallows call and hurry on up high
+
+3
+00:00:22,839 --> 00:00:28,480
+Steam upon the kitchen glass is blurring out the view
+
+4
+00:00:28,480 --> 00:00:34,020
+Sitting on a wooden stool, I wait for dinner too
+
+5
+00:00:34,020 --> 00:00:39,520
+One bowl of warm white rice, a dish of tender greens
+
+6
+00:00:39,520 --> 00:00:45,420
+The simplest kind of happiness is what the evening means
+
+7
+00:00:45,420 --> 00:00:50,439
+No matter how the outside world is noisy, cold, and wide
+
+8
+00:00:50,979 --> 00:00:58,100
+The lamp upon the dining table keeps us warm inside
+
+9
+00:01:09,840 --> 00:01:14,879
+Wrinkles on a gentle hand that smooths my messy hair
+
+10
+00:01:14,879 --> 00:01:20,480
+Telling me to eat it all and sit up in my chair
+
+11
+00:01:20,480 --> 00:01:26,260
+Years will pass like river water flowing to the sea
+
+12
+00:01:26,260 --> 00:01:33,040
+But this quiet kitchen light will always stay with me
+
+13
+00:01:33,040 --> 00:01:38,760
+One bowl of warm white rice, a dish of tender greens
+
+14
+00:01:38,760 --> 00:01:43,780
+The simplest kind of happiness is what the evening means
+
+15
+00:01:44,599 --> 00:01:49,680
+No matter how the outside world is noisy, cold, and wide
+
+16
+00:01:50,140 --> 00:01:57,400
+The lamp upon the dining table keeps us warm inside
+
+17
+00:01:57,400 --> 00:02:14,439
+The lamp is always on for you...