TextForSpeech v0.17.1

What changed

restored file-path normalization so path separators collapse to spacing again instead of being spoken as slash or backslash
repaired contextual path shortening so current directory and repo root prefixes stay speech-safe without reintroducing spoken separators
fixed markdown inline and fenced code handling so backticked file paths and file references take the path-specific normalization lane instead of falling back to generic code speech
documented the file-path speech invariant in the maintainer guidance and updated the README to match the corrected downstream-TTS behavior
added regression coverage for plain-text paths, context-aware path shortening, and backticked path spans

no caller-side API changes are required for this release
maintainers should treat spoken slash or backslash inside normalized file paths as a regression unless a future change explicitly requests that behavior