resolve note field item in todo

TODO.md

@@ -129,37 +129,6 @@ have PNG export and were deferred:
   exports PNG natively today; would need an external dependency
   or a pixel-buffer-to-format conversion.
 
-## Note-field handling: holistic review (priority LOW)
-
-The lot `note::` field is nominally a human annotation, but it leaks
-into behavior in at least one place: for CUSIP-like holdings with a
-note, `valuation.shortLabel(note)` becomes the allocation's
-`display_symbol` (`src/analytics/valuation.zig`, ~line 396), and the
-classification engine then matches `metadata.srf` entries against BOTH
-the allocation symbol AND `display_symbol` (`src/analytics/analysis.zig`,
-~line 611). So a free-text note can silently become a
-classification-matching key, which is surprising and fragile (editing
-a note could change what classifies).
-
-Surfaced while building `zfin doctor`: its metadata cross-reference
-deliberately checks only `lot.priceSymbol()` (the ticker alias or raw
-symbol), NOT the note-derived `display_symbol`, because coupling a
-diagnostic to free-text note content felt wrong. That asymmetry is the
-tell: the cross-ref and the engine now disagree on what counts as
-"classified" for a note-bearing CUSIP.
-
-Do a pass over every `note` consumer and classify each use as
-display-only vs behavior-affecting; decide whether note-derived values
-should ever be matching keys, document/justify any that stay, and then
-reconcile `doctor`'s metadata cross-ref with whatever the engine
-settles on. Starting points (grep `\.note` and `note::`):
-
-- `valuation.shortLabel` -> `display_symbol`, used as a classification
-  match key in `analysis.zig` (the main offender).
-- Cash / illiquid / CD row rendering (display labels; likely fine).
-- `transaction_log` transfer `note` (annotation).
-- audit / contributions matchers (do any key off notes?).
-
 ## Refactor: trim `src/format.zig` once Money / Date have absorbed their helpers — priority LOW
 
 `src/format.zig` is still a ~1700-line grab-bag, but the money- and