feat: AI code review using ollama and qwen3:14b

[EuclidStellar]

PR : Ollama Model Setup and AI code Review with qwen3:14B using GitHub Action

This workflow automates code review for pull requests using the Ollama LLM and the qwen3:14b model. It fetches the PR diff, sends it to the LLM for review, and posts the review as a comment on the PR.

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📋 Workflow Overview

Step	Description
1	Checkout Repository: Fetches the full repo history for accurate diffs.
2	Install Ollama: Installs the Ollama LLM runtime.
3	Start Ollama & Pull Model: Starts Ollama and downloads the qwen3:14b model.
4	Get PR Diff: Computes the code changes between the PR branch and its base.
5	Review with Ollama: Sends the diff and a review prompt to the LLM.
6	Remove LLM Thinking Process: Filters out non-actionable LLM output.
7	Set Review Output: Prepares the review for posting.
8	Create PR Comment: Posts the review as a comment on the PR.
9	Cleanup: Stops the Ollama service.
10	Show Diff File: Prints the diff for debugging.

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🔍 Example PR Review

PR Title	Model Used	Link
Example PR reviewed	qwen3:14b	View PR

🛠️ Key Features

• Automated LLM code review for every PR.
• Removes LLM "thinking process" from comments for clean, actionable feedback.
• Easy to extend for other models or prompts.

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🧩 Workflow Table

Name	Purpose	Key Command/Action
Checkout Repository	Fetch full git history for accurate diffs	actions/checkout@v4
Install Ollama	Install Ollama LLM runtime	curl -fsSL https://ollama.com/install.sh | sh
Start Ollama & Pull Model	Start Ollama server and pull the model	ollama serve, ollama pull qwen3:14b
Get PR Diff	Generate diff between PR and base branch	git diff origin/${{ github.base_ref }}...HEAD
Review PR with Ollama	Send diff and prompt to LLM, save output	ollama run qwen3:14b
Remove LLM thinking process from review	Filter out "Thinking..." sections from LLM output	awk script
Set review output as environment var	Prepare review for posting	cat ollama_clean_review.txt
Create PR Comment	Post review as PR comment	actions/github-script@v6
Stop Ollama Service (Cleanup)	Kill Ollama server process	kill $OLLAMA_PID
Show diff file	Print diff for debugging	cat pr_diff.txt

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📝 How It Works

1. On PR or manual trigger, the workflow checks out the code and installs Ollama.
2. Ollama is started and the qwen3:14b model is pulled.
3. The workflow generates a git diff between the PR branch and its base.
4. The diff is sent to the LLM with a detailed review prompt.
5. The LLM's "thinking process" (if present) is filtered out for clarity.
6. The actionable review is posted as a comment on the PR.
7. Ollama is stopped and the diff is shown for debugging.

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🛡️ Permissions

Permission	Why Needed
contents: read	To checkout code
pull-requests: write	To post review comments
issues: write	For general issue comments

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🧩 Requirements

• GitHub Actions runner: Ubuntu (Linux)
• Ollama model: Sufficient disk space and memory for model download

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🖼️ Mermaid Diagram

flowchart TD
    A[Start: PR Opened] --> B[Checkout Repository]
    B --> C[Install Ollama]
    C --> D[Start Ollama & Pull Model]
    D --> E[Get PR Diff]
    E --> F{Diff Exists?}
    F -- Yes --> G[Review PR with Ollama]
    G --> H[Remove LLM Thinking Process]
    H --> I[Set Review Output]
    I --> J[Create PR Comment]
    J --> K[Stop Ollama Service]
    F -- No --> K
    K --> L[Show Diff File]
    L --> M[End]
    

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Pull Request Overview

This PR adds an automated GitHub Action workflow to perform AI-powered code review using the Ollama LLM and the qwen3:14b model, while also establishing static analysis configurations for Go and JavaScript.

• Introduces workflows for static analysis and AI-based PR review
• Configures installation and operation of the Ollama service with the new qwen3:14b model
• Reorganizes Go code by removing the previous main.go and go.mod toward a new structure

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
main.go	Removed the legacy main.go for codereviewagent; likely part of a restructuring effort
js-code/package.json	New JavaScript project configuration for static analysis implementation
js-code/.eslintrc.json	New ESLint configuration added for JS static analysis
go.mod	Removed the Go module file, indicating a possible change in module management location
code/main.go	New Go source file introduced possibly to replace the removed main.go
README.md	Added project documentation
.golangci.yml	New golangci-lint configuration for Go static analysis
.github/workflows/static-analysis.yml	Workflow for running static analysis on Go and JavaScript files with reviewdog integration
.github/workflows/ai-review.yml	Workflow for setting up Ollama, pulling the qwen3:14b model, reviewing PRs, and posting comments

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