7c4595cbf9
Built-in 64's slot-0 operand is a symbol-table-1 type-6 message id, and every one of them now has caption text: 2683 of 2683 call sites across the 28 stage scripts, 1338 distinct names, no residue of any kind. This only became reachable once build_caption_text was switched to the IXUD field table (537 -> 8800 lines); before that most of these names had nothing to resolve to. Adds isl_dialogue.py plus a committed Stage 02 sample. Does not settle which recording plays for a given line, multi-page captions, or the other five languages.