Update CONTRIBUTING.md

[gaodan-fang]

Summary by CodeRabbit

• Documentation
  • Updated setup examples so virtual environment activation comes before running dependency sync.
  • Clarified venv creation with an explicit Python 3.12 example and separated the dependency sync into its own step after activation.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 3b7ed42f-8293-4205-8d0b-ce3b628ccacf

📥 Commits

Reviewing files that changed from the base of the PR and between 19d74bc and 8c1c379.

📒 Files selected for processing (1)

• README.md

✅ Files skipped from review due to trivial changes (1)

• README.md

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📝 Walkthrough

Walkthrough

Documentation-only updates: adjusted virtual-environment setup command sequencing in CONTRIBUTING.md and README.md to create/activate the venv before running uv sync, and added an explicit uv sync after activation in README examples.

Changes

Cohort / File(s)	Summary
Contribution guide CONTRIBUTING.md	Reordered example commands to activate the virtual environment before running uv sync; updated both generic and --python 3.12 examples to show activation first, then uv sync as a separate step.
Repository README README.md	Updated Quick Start venv example to use uv venv --python=3.12 && source .venv/bin/activate and added an explicit uv sync after activation to install dependencies.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• Create CONTRIBUTING.md #114: Earlier changes to development setup instructions in CONTRIBUTING.md that this PR adjusts.

Suggested reviewers

• vinodmut
• illeatmyhat

Poem

🐰 I hopped through docs with a careful clap,
Activate first, then run the syncy tap.
Commands aligned, no more stumble or slip,
New contributors bounce on a confident trip. 🥕✨

🚥 Pre-merge checks | ✅ 3

✅ 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 'Update CONTRIBUTING.md' is partially related to the changeset. While it accurately describes one file that was modified, the PR also includes significant updates to README.md, and the underlying intent is to update virtual environment setup command sequencing across both files. The title does not capture the primary technical change or the full scope of the PR.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch gaodan-fang-patch-4

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[visahak]

can you also update the readme? https://github.com/AgentToolkit/altk-evolve?tab=readme-ov-file#installation so the instructions are consistent.