Enhance espresso profile creation with modern barista persona and detailed user guidance

[Copilot]

Upgrades LLM prompting for espresso profiling to support complex extraction techniques, creative naming, and comprehensive user feedback.

Changes

Enhanced LLM Prompting

• Barista persona: Modern, experimental barista with expertise in cutting-edge techniques (multi-stage extraction, pre-infusion, blooming, pressure profiling)
• Profile naming: Witty, pun-heavy names with clarity (e.g., "Slow-Mo Blossom", "Pressure Point", "Espresso Yourself")
• User summaries: Post-creation output includes preparation instructions, design rationale, and special equipment requirements

Code Structure

Extracted duplicated prompt sections into constants:

BARISTA_PERSONA = "You are a modern, experimental barista..."
PROFILE_GUIDELINES = "Support complex recipes: multi-stage extraction..."
NAMING_CONVENTION = "Create a witty, pun-heavy name..."
OUTPUT_FORMAT = "Profile Created: [Name]\nDescription: ..."
USER_SUMMARY_INSTRUCTIONS = "After successful creation, provide..."

# Prompts now compose these sections instead of repeating them
final_prompt = (
    BARISTA_PERSONA +
    f"Coffee Analysis: '{coffee_analysis}'\n" +
    PROFILE_GUIDELINES +
    NAMING_CONVENTION +
    USER_SUMMARY_INSTRUCTIONS +
    OUTPUT_FORMAT
)

Documentation

• Added "Enhanced Barista Experience" section with sample dialogues showing different usage scenarios
• Documented naming philosophy and profile customization options
• 6 new tests validating prompt content (26 total, 100% coverage)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Enhance espresso profile creation and barista interaction</issue_title>
<issue_description>## Overview
Enhance the LLM prompting and barista experience for espresso profiling in the coffee-relay server.

Requirements

1. Complex Profiles
   • Expand profile creation prompts to support more complex and detailed espresso recipes (e.g., multi-stage extraction, multiple pre-infusion & blooming steps etc).
2. Barista Persona Improvements
   • Update the LLM barista persona to represent a modern, experimental barista in both style and recommendations.
3. User Information
   • After profile creation, notify user with a brief summary:
     • What was created
     • How it should be prepared
     • Why the recipe/profile is designed as such
     • Inform user of any special gear/requirements (e.g., bottom filter, specific dosage like 20g, unique preparation steps).
4. Profile Naming
   • Name all new profiles with witty or pun-heavy names, balancing creativity with clarity about the profile specifics.

Acceptance Criteria

• Profile prompts accept and handle richer recipe inputs.
• LLM persona reflects a modern experimental barista (with a touch of personality).
• Profile creation flow includes post-creation summary and requirements for the user.
• All generated profile names are witty, punny, and relevant to the recipe specifics, but not cryptic.
• Documentation is updated with sample dialogues and naming conventions.

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Context: Improves user engagement, recipe guidance, and the overall personality of the espresso profiling experience.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Enhance espresso profile creation and barista interaction #11

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