Buttons inside <form> default to type='submit'. Clicking to
collapse/expand a structured prompt field was triggering the form's
submit handler, which fires audio generation. Added explicit
type='button' to all non-submit buttons in StructuredPromptEditor.
The frontend no longer does separator/punctuation logic. Both Maestro
modes (generate and complete) now simply setPrompt(result). The LLM
is instructed to return the user's exact words + continuation, properly
joined. This is the right layer for text joining decisions.
Two fixes:
- Backend: MAESTRO_COMPLETE_PROMPT now instructs Gemini to output ONLY
the continuation text, not a rewrite. No repeating user's words.
- Frontend: complete mode appends result to existing prompt with smart
separator logic (lowercase start = space, uppercase = period+space).
generate mode still replaces the empty prompt as before.
Backend:
- New text_gen.py module with Gemini text generation client
- suggest_prompts(): generates 3 prompt suggestions from user input
- get_text_gen_config(): loads config from .env (model, API key, safety)
- get_available_models(): returns list of Gemini text models
- Safety settings: harassment, hate_speech, sexually_explicit, dangerous
Configurable via TEXT_GEN_SAFETY_* env vars (default: BLOCK_ONLY_HIGH)
- New endpoints:
* POST /api/text-gen/suggest — generates 3 prompt suggestions
* GET /api/text-gen/models — lists available text models
* GET /api/text-gen/config — returns safe config (API key masked)
* POST /api/text-gen/config — updates config in-memory
- Default model: gemini-2.5-flash
- Fallback API key: LYRIA_API_KEY if TEXT_GEN_API_KEY not set
- System prompt: expert music producer persona for rich musical detail
Frontend:
- New SuggestionsModal component for displaying generated suggestions
- Auto-fetches when opened
- Shows loading spinner, error state, or suggestion list
- Each suggestion clickable to populate the prompt field
- Hover effect: 'Click to use this prompt →'
- Generator component updated with 'Get Suggestions ✨' button
- Appears next to prompt label in both Basic and Advanced modes
- Disabled when no input present
- Clicking suggestion populates the prompt/structured fields
- SettingsModal expanded with Text Generation section (collapsible)
- Same pattern as Image Generation: model, API key status, safety filters
- Editable dropdowns with Save Changes button
- Refactored to use shared useGenSettings hook for both sections
Models Available:
- gemini-2.5-flash (GA, default) — best price-to-performance
- gemini-2.5-pro (GA) — highest quality reasoning
- gemini-3.5-flash (Preview) — next-gen Flash
- gemini-3.1-flash (Preview) — latest with thinking
Architecture KB and Tasks KB updated.
Backend:
- Added prompt_structure JSON column to clips DB (migration in init_db)
- Updated GenerateRequest model with optional prompt_structure dict
- build_prompt() method combines structured fields into single prompt:
'Generate a track with the following elements:\n\n**Style:** [style]\n...'
- create_clip() accepts and stores prompt_structure JSON
- get_clips()/get_clip() parse prompt_structure back to dict
Frontend:
- New StructuredPromptEditor component with 8 collapsible fields:
Style, Timbre, Structure, Mood, Tempo, Instrumentation, Effects, Additional
- Fields show filled/empty state with colored dots
- Expand/collapse individual fields
- 'Expand All' button
- Counter: 'X of 8 fields filled'
- Generator component updated with Basic/Advanced mode toggle (Pro only)
- Basic: single textarea (works for both models)
- Advanced: StructuredPromptEditor (Pro only)
- Mode resets to Basic when switching to Clip Preview
- DetailPanel shows structured prompt breakdown when present
- Each filled field shown in its own labeled box
- Style, Timbre, Structure, Mood, Tempo, Instrumentation, Effects, Additional
- Clip interface updated with prompt_structure field across all components
Architecture KB and Tasks KB updated.
rin.kagamine