Add comprehensive codebase documentation in English and Persian

[Copilot]

User requested complete codebase review ("کل فایل ها رو بخون برام" - "Read all the files for me").

Changes

Added three documentation files covering all 22 repository files:

• CODEBASE_REVIEW.md (21KB) - Full technical analysis in English

  • Architecture breakdown of 8 source modules (523 LOC)
  • Test suite analysis (6 test files, 100 LOC)
  • Dependencies audit (70+ packages)
  • Security assessment and quality metrics (8.5/10)
  • Enhancement recommendations

• CODEBASE_REVIEW_FA.md (30KB) - Complete Persian translation

  • Identical structure and depth as English version
  • Native Persian technical terminology

• REVIEW_SUMMARY_FA.md (8KB) - Quick reference in Persian

  • High-level overview for non-technical stakeholders
  • Key findings and next steps

Coverage

Core modules analyzed:

• app.py - Gradio server bootstrap
• src/config.py - Environment/YAML config management
• src/agent.py - OpenAI function calling implementation
• src/tools.py - Product filtering + ntfy.sh notifications
• src/data.py - Multi-source knowledge base (Excel/PDF/TXT)
• Test suite with 100% module coverage

Findings:

• One typo identified: app.py:9 ("Luch" → "Launch")
• Clean modular architecture with proper separation of concerns
• Good security practices (.env management, no hardcoded secrets)
• Missing: caching layer, vector search, conversation persistence

Documentation Structure

Each comprehensive doc includes:

• File-by-file code walkthrough with line counts
• Data flow diagrams and integration points
• API usage patterns (OpenAI tools, ntfy.sh)
• Code quality metrics and complexity analysis
• Short/medium/long-term enhancement roadmap

Original prompt

کل فایل ها رو بخون برام

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