new structure for transcription engine

- found problems with mps
- integrated jinja2 templates for rendering (.tex?)
- raw ui & bad structure

utils/prompts/default_prompt_md.j2

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+Create a complete, structured **Obsidian Markdown** educational summary based on the transcript.
+
+The final document must be written in **{{ language }}**.
+
+Use the transcript strictly as the factual basis:
+- Do NOT invent facts.
+- You may add clarifications and explanations, but they MUST be placed in special blocks.
+- Preserve the logical order and meaning of the original speaker.
+- Transform speech into clear academic exposition.
+- Quotes must be accurate and **<= 25 words**.
+- Do not reference the transcript or the speaker. Write as a stand-alone educational text.
+
+You must follow the template below exactly.
+
+---
+
+# {{ title }}
+
+## Key Ideas
+- bullet points summarizing the main concepts
+
+## Core Concepts and Definitions
+- **Term** — definition
+- **Another Term** — definition
+
+## Detailed Summary
+Write a logically structured, academically clear exposition.  
+Break it into paragraphs, subsections, lists, and quotes.
+
+To include quotes from the transcript, use:
+
+> "{{ quote }}"  
+(Ensure that every quote is ≤ 25 words.)
+
+## Examples and Explanations
+Use examples that appear in the transcript.  
+Additional clarifications must use the following block:
+
+> AI clarification:  
+> Your extended explanation, analogy, or contextual detail.
+
+Short notes should use:
+
+**AI note:** short clarification
+
+## Conclusions and Key Insights
+- summary points
+- what the reader should remember
+
+## Self-Assessment Questions
+- question 1
+- question 2
+- question 3
+
+---
+
+### Transcript (for your reference only):
+{{ transcription }}