Closes#1949.
Settings offers three notations. Only Respelling substitutes text today; IPA
and CMU rows save cleanly, are validated, get a badge and can be toggled on,
then get dropped before term matching and are never read again.
That much is Phase 1 behaving as designed. The defect is that it was INVISIBLE:
"Test a sentence" answered "No entries match — spoken as written" for a term
that does match. Not a degraded answer, a wrong one — and it sent the user off
to re-type an entry that was already correct, or to convert it to Respelling,
where a phoneme string is then read as graphemes.
docs/specs/01-expressive-tts.md asked for exactly the opposite: such entries
"passed through and flagged 'phoneme not honored on this engine' (parity-rule:
visible degradation)". That flag was never implemented. This is it.
The dry run reports inert entries separately, and the panel names them. The
substitution path is deliberately untouched — this does NOT start feeding raw
phoneme strings into the grapheme stream, which is the thing Phase 1 refuses on
purpose, and a test pins that it still refuses.
Not Phase 2. Lowering IPA/CMU to engine markup is a real feature per engine and
stays open; what changes here is that the gap is now honest rather than silent.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017ypcgSsh5j2PEonSJiAU1S
