Update README: add Python backend setup with proper code blocks

[Darshita02]

This PR updates the README.md to include clear instructions for setting up the Python backend for PictoPy.

Changes include:

• Added step-by-step instructions for creating and activating a virtual environment.
• Added instructions for installing backend dependencies.
• Added instructions for running the backend server.
• Fixed all code blocks with proper opening and closing triple backticks to ensure correct formatting and syntax highlighting.

This should help new contributors get the backend running smoothly and reduce setup confusion.

Summary by CodeRabbit

• Documentation
  • Added a Backend Setup (Python) guide to README covering required Python version (Python 3.11.x) and step-by-step instructions to create/activate a virtual environment, install backend dependencies, and run the backend for local testing.

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[coderabbitai]

📝 Walkthrough

Walkthrough

The pull request adds a "Backend Setup (Python)" section to README.md that specifies Python 3.11.x, shows how to create/activate a virtual environment (Windows Git Bash example), install dependencies from backend/requirements.txt, and run the backend with python backend/main.py.

Changes

Cohort / File(s)	Summary
Documentation README.md	Added "Backend Setup (Python)" section: requires Python 3.11.x (notes Python 3.13 unsupported), provides virtualenv creation/activation steps (Windows Git Bash example), dependency install via pip install -r backend/requirements.txt, and startup command python backend/main.py.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A README so clear, a setup so neat,
Python three-eleven — steady and sweet,
Virtualenv snug, deps all in line,
Backend awakened, servers hum fine,
Hopping to code, with joy I define. ✨

Pre-merge checks

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding Python backend setup instructions with proper code block formatting to README.md.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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[coderabbitai]

Actionable comments posted: 1

🧹 Nitpick comments (1)

README.md (1)

19-37: Add platform-specific instructions for macOS and Linux.

The setup instructions are currently limited to Windows (Git Bash). Since PictoPy is marketed as cross-platform, contributors on macOS and Linux will need equivalent instructions. Consider adding branches for each platform, or clarifying if setup differs across platforms.

🔎 Example structure for multi-platform instructions

### 1. Create and activate a virtual environment

**Windows (Git Bash):**
\`\`\`bash
python -m venv venv
source venv/Scripts/activate
\`\`\`

**macOS and Linux:**
\`\`\`bash
python3 -m venv venv
source venv/bin/activate
\`\`\`

This ensures users on all platforms have clear, actionable guidance.

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• README.md

🔇 Additional comments (1)

README.md (1)

12-37: Backend setup documentation is a valuable addition.

The new "Backend Setup (Python)" section provides clear, step-by-step guidance with proper code block formatting and appropriate version constraints. This will help reduce setup friction for new contributors. Once the minor formatting issue and platform coverage are addressed, this section will be solid.

[Darshita02]

Hi maintainers ,
I’ve added Python backend setup instructions to the README to help new contributors avoid setup issues (especially Python version compatibility).

Please let me know if any changes or improvements are needed.
Thanks for your time!

[github-actions]

⚠️ No issue was linked in the PR description.
Please make sure to link an issue (e.g., 'Fixes #issue_number')

[github-actions]

⚠️ No issue was linked in the PR description.
Please make sure to link an issue (e.g., 'Fixes #issue_number')