re: the seven chatter fields, read off sub_82213980

The one function referencing all seven field-name strings is the rule table's
loader.  Interval / IntervalFluctuation / EffectiveTime are SECONDS, emitted
as *60 frame counts; Probability is a percentage and zero skips the record;
Pattern is a 4-arm enum of which only Sound and Window ship; the Yes/No pair
element is a u32 bitmask, which is why MessageCount is clamped to 32 (max on
disc is 26).  40-byte object layout recorded.  13 dead records characterised.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PMRJjbxLqZtsb5Vb7KunPE

docs/re/data/preset-messages.txt

@@ -11,6 +11,18 @@ distinct named-field schemas      : 1
 MessageCount*2 == positional count: 9216/9216  (mismatches 0)
 second-of-pair values             : {'No': 8940, 'Yes': 388}
 
+value census of the seven named fields (all 9216 event records):
+  EffectiveTime         4 distinct  0=8566 3=453 5=187 10=10
+  Interval              6 distinct  0=6820 3=821 4=1 5=894 30=182 120=498
+  IntervalFluctuation   2 distinct  0=8403 2=813
+  Priority              8 distinct  1=7738 2=112 3=423 4=339 5=244 6=237 7=118 9=5
+  Probability          13 distinct  0=6788 1=967 2=335 3=253 5=98 10=90 20=15 25=22 30=31 40=21 50=196 60=8 100=392
+  Pattern               2 distinct  Sound=8395 Window=821
+  MessageCount         25 distinct  0=6797 1=419 2=556 3=465 4=335 5=236 6=105 7=65 8=57 9=34 10=43 11=23 12=11 13=6 14=8 15=5 16=14 17=8 18=6 19=7 20=7 21=2 23=2 25=4 26=1
+  (MessageCount==0, Probability==0) cross-tab: {'both zero': 6786, 'both set': 2417, 'no lines but Probability>0': 11, 'lines but Probability==0 (dead)': 2}
+  records with MessageCount > 32 (the reader clamps here): 0
+  Yes-bits per record: {0: 9022, 1: 127, 2: 28, 3: 14, 4: 10, 5: 1, 6: 1, 7: 7, 9: 2, 10: 2, 11: 1, 14: 1}
+
 the 64 event records, and how many of the 144 tables give each one lines:
   ATTACK_IS_AVOIDED                114
   ATTACK_SUCCEEDED                 114