Move prompts into embedded Markdown assets

internal/prompts/assets/modules/homophones/user.md

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+Review this transcript section and return only homophone or spoken-form corrections that should be applied.
+
+Rules:
+- Approve only corrections where the original text is plausibly a mistaken homophone, phonetic rendering, or mistranscription of what was likely spoken.
+- Allow examples such as changing "dam" to "damn", "rank" to "Hrank", or "gestures" to "Jesters" when local context supports the correction.
+- Reject unrelated substitutions like changing "Lyra" to "Jesters".
+- Reject antonyms or reversals such as changing "visible" to "invisible".
+- Do not add or remove punctuation, alter capitalization only, normalize spacing, remove filler words, collapse repetitions, or make general readability edits.
+- Treat glossary names and aliases as protected spellings and context.
+- You may correct toward glossary names, aliases, or their plural forms when the correction is acoustically plausible and supported by local context.
+- Do not replace, Anglicize, normalize, lowercase, or otherwise alter protected glossary names or aliases that already appear correctly in the transcript.
+- Preserve canonical glossary capitalization for protected names and aliases, even if they look unusual.
+- If a segment includes categories, treat them as additional transcript context.
+- Use the exact id from the input segment.
+- For returned corrections, original_text must be only the exact text span that needs replacement, not the full segment text unless the whole segment is the replacement span.
+- Choose an original_text span that appears exactly once in the current segment text.
+- corrected_text must be only the replacement text for that span, not the full corrected segment text unless the whole segment is the replacement span.
+- Each returned correction must contain only id, original_text, corrected_text, and confidence.
+- Do not return corrections where original_text and corrected_text are identical.
+- Do not return speaker, start, or end fields.
+- Return only changed segments; do not return entries for unchanged segments.
+- confidence must be between 0.0 and 1.0.
+- If no corrections are needed, return an empty corrections list.
+
+{{ hardening }}
+
+{{ .TranscriptDescriptionBlock }}Protected glossary/context:
+{{ .GlossaryJSON }}
+
+Transcript section:
+{{ .SectionJSON }}