Updated sidebar

_Sidebar.md

@@ -1,34 +1,47 @@
-## Overview
+## Start Here
 - [Home](Home)
-- [Getting Started](Getting-Started)
 - [Installation](Installation)
+- [Getting Started](Getting-Started)
+- [AIChat Migration](AIChat-Migration)
 
-## Core Concepts
-- [Agents](Agents)
+## Using Loki
+- [REPL](REPL)
+- [REPL Prompt](REPL-Prompt)
+- [Shell Integrations](Shell-Integrations)
+- [Bash Prompt Helpers](Bash-Prompt-Helpers)
+- [Sessions](Sessions)
+
+## Model Providers
+- [Clients](Clients)
+  - [Authentication](Clients#authentication)
+  - [API Keys](Clients#api-key-authentication)
+  - [OAuth](Clients#oauth-authentication)
+- [Patches](Patches)
+
+## Tools & Function Calling
 - [Tools](Tools)
+  - [Built-In Tools](Tools#built-in-tools)
+  - [Tool Configuration](Tools#configuration)
+  - [Tool Error Handling](Tools#tool-error-handling)
 - [Custom Tools](Custom-Tools)
 - [Custom Bash Tools](Custom-Bash-Tools)
 - [MCP Servers](MCP-Servers)
+
+## Agents
+- [Agents](Agents)
+  - [Agent Tools](Agents#4-building-tools-for-agents)
+  - [Todo System](Agents#6-todo-system--auto-continuation)
+  - [Sub-Agent Spawning](Agents#7-sub-agent-spawning-system)
+  - [User Interaction Tools](Agents#8-user-interaction-tools)
+  - [Built-In Agents](Agents#built-in-agents)
+- [TODO System](TODO-System)
+
+## Knowledge & Automation
 - [RAG](RAG)
-- [Vault](Vault)
-
-## REPL & Interaction
-- [REPL](REPL)
-- [REPL Prompt](REPL-Prompt)
-- [Bash Prompt Helpers](Bash-Prompt-Helpers)
-- [Shell Integrations](Shell-Integrations)
-
-## Configuration & Customization
-- [Environment Variables](Environment-Variables)
-- [Themes](Themes)
 - [Macros](Macros)
 - [Roles](Roles)
-- [Sessions](Sessions)
 
-## Advanced Features
-- [TODO System](TODO-System)
-- [Patches](Patches)
-
-## Clients & Migration
-- [Clients](Clients)
-- [AIChat Migration](AIChat-Migration)
+## Configuration
+- [Environment Variables](Environment-Variables)
+- [Vault](Vault)
+- [Themes](Themes)