chore(wren-ai-service): minor updates

[cyyeh]

Summary by CodeRabbit

• New Features
  • Introduced separate instruction categories for calculated fields and metrics in SQL generation and regeneration prompts, improving clarity and customization.
• Improvements
  • Reformatted user instructions in prompts as numbered lists for better readability.
  • Enhanced prompt templates by removing redundant "current time" or "current date" fields.
  • Updated SQL reasoning prompts for more structured and explicit guidance.
  • Added clearer rules for SQL query generation, including proper use of aggregate functions.
  • Simplified prompt construction by centralizing system prompts and refining instruction handling.
• Bug Fixes
  • Removed unused imports and obsolete methods related to time and date handling.

[coderabbitai]

Walkthrough

This update refactors prompt construction across several SQL-related pipelines by introducing distinct instruction categories for calculated fields and metrics, and reformatting user instructions as numbered lists. It also removes all references to current time or date from prompts and function signatures, and centralizes some prompt templates and rules into shared utilities.

Changes

Files/Paths	Change Summary
wren-ai-service/src/pipelines/generation/sql_generation.py, followup_sql_generation.py, sql_regeneration.py	Refactored prompt logic to separate calculated field and metric instructions, restructured user instructions, and removed current time from prompts and function signatures.
wren-ai-service/src/pipelines/generation/sql_generation_reasoning.py, followup_sql_generation_reasoning.py	Delegated system prompt to shared utility, reformatted user instructions as numbered lists, and removed current time from prompts.
wren-ai-service/src/pipelines/generation/intent_classification.py	Updated system prompt to include user instructions, added directive for time phrasing, reformatted user instructions, and removed current time.
wren-ai-service/src/pipelines/generation/question_recommendation.py, web/v1/services/question_recommendation.py	Removed all handling of current date in prompt signatures, templates, and request dictionaries.
wren-ai-service/src/pipelines/generation/utils/sql.py	Added new system prompt constant, updated SQL rules, refactored instruction construction to return lists and removed calculated/metric field logic.
wren-ai-service/src/web/v1/services/init.py	Removed show_current_time method and related imports from Configuration.Timezone.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant Pipeline
    participant PromptBuilder
    participant Utils

    User->>Pipeline: Submit query and context
    Pipeline->>Utils: construct_instructions(config, instructions)
    Utils-->>Pipeline: Return list of instructions
    Pipeline->>PromptBuilder: Build prompt with calculated_field_instructions, metric_instructions, user_instructions
    PromptBuilder-->>Pipeline: Return formatted prompt
    Pipeline-->>User: Return SQL or recommendations

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Suggested reviewers

• imAsterSun

Poem

A bunny hops through code so neat,
Splitting instructions for SQL’s feat.
No more time or date to chase,
Numbered lists now take their place.
Metrics and fields each get their say—
The prompt is clearer, hip-hip-hooray!
🐇✨

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📥 Commits

Reviewing files that changed from the base of the PR and between 1a24ff1 and 6a30f32.

📒 Files selected for processing (1)

• wren-ai-service/src/web/v1/services/question_recommendation.py (1 hunks)

🚧 Files skipped from review as they are similar to previous changes (1)

• wren-ai-service/src/web/v1/services/question_recommendation.py

⏰ Context from checks skipped due to timeout of 90000ms (2)

• GitHub Check: pytest
• GitHub Check: Analyze (go)

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• 📝 Generate Docstrings

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[imAsterSun]

lgtm