feat: add release notes for version 3.21.1 and update sidebar links (#232)

Author: hannesrudolph

.roorules

@@ -9,3 +9,6 @@ This ensures links work correctly in the built documentation while maintaining c
 
 ## Context7 MCP
 When making structural or formatting changes beyond simple .md or .mdx files, always check the Context7 MCP, the `context7CompatibleLibraryID` will be `/facebook/docusaurus`
+
+## Release Notes
+Never Thank cte, hannesrudolph, roomote or mrubens

docs/update-notes/index.md

@@ -5,6 +5,7 @@ This section contains notes about recent updates to Roo Code, listed by version
 
 ## Version 3.21
 
+*   [3.21.1](/update-notes/v3.21.1) (2025-06-18)
 *   [3.21.0](/update-notes/v3.21.0) (2025-06-17)
 
 ---

docs/update-notes/v3.21.1.mdx

@@ -0,0 +1,16 @@
+# Roo Code 3.21.1 Release Notes (2025-06-18)
+
+This patch release improves stability, security, and provides better error handling for several key features.
+
+## Bug Fixes
+
+* **Parser Reliability**: Fixed an issue that could prevent the parser from loading correctly in certain environments, improving overall stability ([#4857](https://github.com/RooCodeInc/Roo-Code/pull/4857))
+* **Windows Stability**: Resolved a crash that could occur when using MCP servers on Windows with node version managers ([#4711](https://github.com/RooCodeInc/Roo-Code/pull/4711))
+* **Subtask Rate Limiting**: Implemented global rate-limiting to prevent errors when creating subtasks, ensuring more reliable task execution (thanks olweraltuve!) ([#4453](https://github.com/RooCodeInc/Roo-Code/pull/4453))
+* **Codebase Search Errors**: Improved error messages for codebase search, making it easier to diagnose and resolve issues with embeddings ([#4432](https://github.com/RooCodeInc/Roo-Code/pull/4432))
+
+## Misc Improvements
+
+* **Anthropic Cost Tracking**: Improved the accuracy of cost reporting for Anthropic models ([#4849](https://github.com/RooCodeInc/Roo-Code/pull/4849))
+* **Performance Optimization**: The "Enable MCP Server Creation" setting is now disabled by default, reducing token usage and simplifying prompts for most users ([#4838](https://github.com/RooCodeInc/Roo-Code/pull/4838))
+* **Security**: Addressed security vulnerabilities by updating dependencies ([#4844](https://github.com/RooCodeInc/Roo-Code/pull/4844))

docs/update-notes/v3.21.mdx

@@ -46,6 +46,10 @@ Added support for reading Excel (.xlsx) files in tools (thanks @chrarnoldus!) ([
 
 ## Bug Fixes
 
+* **Parser Reliability**: Fixed an issue that could prevent the parser from loading correctly in certain environments, improving overall stability ([#4857](https://github.com/RooCodeInc/Roo-Code/pull/4857))
+* **Windows Stability**: Resolved a crash that could occur when using MCP servers on Windows with node version managers ([#4711](https://github.com/RooCodeInc/Roo-Code/pull/4711))
+* **Subtask Rate Limiting**: Implemented global rate-limiting to prevent errors when creating subtasks, ensuring more reliable task execution (thanks olweraltuve!) ([#4453](https://github.com/RooCodeInc/Roo-Code/pull/4453))
+* **Codebase Search Errors**: Improved error messages for codebase search, making it easier to diagnose and resolve issues with embeddings ([#4432](https://github.com/RooCodeInc/Roo-Code/pull/4432))
 * **API Conversation History**: Added proper error handling for conversation history issues (thanks @KJ7LNW!) ([#4741](https://github.com/RooCodeInc/Roo-Code/pull/4741), [#4738](https://github.com/RooCodeInc/Roo-Code/pull/4738))
 * **Model ID Errors**: Fixed ambiguous model ID error messages (thanks @elianiva!) ([#4709](https://github.com/RooCodeInc/Roo-Code/pull/4709), [#4710](https://github.com/RooCodeInc/Roo-Code/pull/4710))
 * **Prompt Settings**: Fixed save/discard/revert flow for Prompt Settings (thanks @hassoncs!) ([#4623](https://github.com/RooCodeInc/Roo-Code/pull/4623), [#4312](https://github.com/RooCodeInc/Roo-Code/pull/4312))
@@ -55,6 +59,9 @@ Added support for reading Excel (.xlsx) files in tools (thanks @chrarnoldus!) ([
 
 ## Misc Improvements
 
+* **Anthropic Cost Tracking**: Improved the accuracy of cost reporting for Anthropic models ([#4849](https://github.com/RooCodeInc/Roo-Code/pull/4849))
+* **Performance Optimization**: The "Enable MCP Server Creation" setting is now disabled by default, reducing token usage and simplifying prompts for most users ([#4838](https://github.com/RooCodeInc/Roo-Code/pull/4838))
+* **Security**: Addressed security vulnerabilities by updating dependencies ([#4844](https://github.com/RooCodeInc/Roo-Code/pull/4844))
 * **Test Mode Update**: Updated test mode to support Vitest testing framework ([#4778](https://github.com/RooCodeInc/Roo-Code/pull/4778))
 * **Working Directory Warning**: Removed unnecessary warning about working directory changes ([#4795](https://github.com/RooCodeInc/Roo-Code/pull/4795))
 * **Telemetry**: Added marketplace tab view and install click tracking ([#4781](https://github.com/RooCodeInc/Roo-Code/pull/4781))

sidebars.ts

@@ -195,6 +195,7 @@ const sidebars: SidebarsConfig = {
           label: '3.21',
           items: [
             { type: 'doc', id: 'update-notes/v3.21', label: '3.21 Combined' },
+            { type: 'doc', id: 'update-notes/v3.21.1', label: '3.21.1' },
             { type: 'doc', id: 'update-notes/v3.21.0', label: '3.21.0' },
           ],
         },