Added sidebar file

_Sidebar.md

@@ -0,0 +1,22 @@
+## 🤖 Kodo AI Reviewer
+
+- [What is Kodo?](what-is-kodo-reviewer)
+
+---
+
+### 👩‍💻 Developer
+- [Code Review with Kodo](developer-guide/how-it-works)
+- [Review Output Format](developer-guide/ai-reviewer-output-format)
+- [Limitations & Best Practices](developer-guide/limitations-and-best-practices)
+
+---
+
+### 🧑‍🔧 Tech Lead
+- [CI/CD Integration](techlead-guide/how-to-integrate)
+- [Custom Review Rules](techlead-guide/extension-of-rules)
+- [Troubleshooting](techlead-guide/faq-troubleshooting)
+
+---
+
+### ⚙️ DevOps
+- [Gitea Token Setup](devops-guide/reviewer-token)

what-is-kodo-reviewer.md

@@ -34,4 +34,21 @@ When a pull request is opened or updated, Kodo kicks in automatically:
 1. 📥 **Reads the environment** — loads your action configuration and prepares the review context
 2. 🔍 **Analyzes your changes** — scans the diff for issues, improvements, and code quality signals
 3. 💬 **Leaves comments** — posts inline feedback and a summary conclusion on the PR
-4. 🗣️ *(Optional)* **Responds to you** — mention the predefined tag in any comment and Kodo will reply directly to your question or request
+4. 🗣️ *(Optional)* **Responds to you** — mention the predefined tag in any comment and Kodo will reply directly to your question or request
+
+---
+
+## 📚 Documentation by role
+
+### 👩‍💻 Developer
+- [Code Review with Kodo](developer-guide/how-it-works) — how to trigger, skip, and interact with the reviewer
+- [Review Output Format](developer-guide/ai-reviewer-output-format) — how to read summary comments, inline comments, and PR status
+- [Limitations & Best Practices](developer-guide/limitations-and-best-practices) — what Kodo can't do and how to get the most out of it
+
+### 🧑‍🔧 Tech Lead
+- [CI/CD Integration](techlead-guide/how-to-integrate) — how to add Kodo to your repository workflow
+- [Custom Review Rules](techlead-guide/extension-of-rules) — how to extend the built-in rules with project-specific instructions
+- [Troubleshooting](techlead-guide/faq-troubleshooting) — what to check when Kodo doesn't run
+
+### ⚙️ DevOps
+- [Gitea Token Setup](devops-guide/reviewer-token) — how to generate the bot token and configure repository secrets