feat: paragraph view, RTF export, live billing ticker, voice command improvements #4764

Originally written by @ccantynz-alt on GitHub.
Imported from https://github.com/ccantynz-alt/voxlen/pull/37

Summary

• Paragraph/flow view in transcript — toggle between timestamped segment view and clean prose mode ideal for copy-pasting to Word (double-click to edit the full merged text)
• RTF export + export dropdown — "Word / RTF (.rtf)" opens natively in Microsoft Word with title, date, timestamps, speaker labels; dropdown in dictation toolbar with txt/md/rtf/json/srt options
• Live billing ticker — pulsing £cost counter visible while recording when an active client + billable rate are set
• review_uncertain voice command — saying "review uncertain words" now toasts the count of low-confidence words highlighted in transcript
• localStorage key migration — renamed marcoreid_* → voxlen_* with fallback reads for backward compatibility
• 2 new SEO landing pages — dictation-software-for-accountants-uk, voice-to-text-for-medical (~13k searches/month targeted)

Test plan

• Toggle paragraph view in dictation panel — prose renders, double-click opens edit textarea, Save merges back to one segment
• Export dropdown — each format downloads correctly, RTF opens in Word
• Start recording with active client (billable rate set) — brass ticker appears and counts up
• Say "review uncertain words" — toast shows count or "no uncertain words"
• Verify localStorage keys written as voxlen_settings / voxlen_history / voxlen_flywheel

https://claude.ai/code/session_011MFNHeFKrhfuSrEYVgrdyr

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