Migrate permission system from MCP file-based to stdio-based

Replace MCP permission server with stdio-based permission flow that
communicates directly with Claude CLI via stdin/stdout. This simplifies
the architecture and fixes permission expiration issues.

Key changes:
- Use --permission-prompt-tool stdio and --input-format stream-json
- Handle control_request messages for permission prompts
- Send control_response via stdin to approve/deny
- Check local permissions for auto-approval of pre-approved tools
- Only expire pending permissions when VS Code restarts, not panel close

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.vscodeignore

@@ -11,3 +11,6 @@ vsc-extension-quickstart.md
 **/.vscode-test.*
 backup
 .claude
+claude-code-chat-permissions-mcp/**
+node_modules
+mcp-permissions.js

CHANGELOG.md

@@ -4,6 +4,63 @@ All notable changes to the "claude-code-chat" extension will be documented in th
 
 Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
 
+## [1.0.7] - 2025-10-01
+
+### 🚀 Features Added
+- **Slash Commands Update**: Added 4 new slash commands to the commands modal
+  - `/add-dir` - Add additional working directories
+  - `/agents` - Manage custom AI subagents for specialized tasks
+  - `/rewind` - Rewind the conversation and/or code
+  - `/usage` - Show plan usage limits and rate limit status (subscription plans only)
+
+### 📚 Documentation Updates
+- Updated slash commands count from 19+ to 23+ built-in commands
+- Enhanced command descriptions for better clarity:
+  - `/config` - Now specifies "Open the Settings interface (Config tab)"
+  - `/cost` - Added note about cost tracking guide for subscription-specific details
+  - `/status` - Expanded description to mention version, model, account, and connectivity
+  - `/terminal-setup` - Added clarification about iTerm2 and VSCode only support
+
+## [1.0.6] - 2025-08-26
+
+### 🐛 Bug Fixes
+- Fixed typo in codebase
+- Removed priority settings that were no longer needed
+
+### 🔧 Technical Improvements
+- Moved script to separate file for better code organization
+
+## [1.0.5] - 2025-07-30
+
+### 🚀 Features Added
+- **MCP Integration**: Added claude-code-chat-permissions-mcp folder for enhanced permission management
+- **Message Persistence**: Save message in text box for better user experience
+- **UI Improvements**: Always display history and new chat options
+- **Input Enhancement**: Removed maxlength limit for custom command prompt textarea
+
+### 🐛 Bug Fixes
+- Fixed new chat functionality
+- Fixed request start time isProcessing issue
+- Fixed close and open conversation behavior
+
+### 🔄 Merged Pull Requests
+- Merged PR #87 from horatio-sans-serif/main
+
+## [1.0.4] - 2025-01-22
+
+### 🐛 Bug Fixes
+- Fixed input text area overflow issue by adding `box-sizing: border-box` to prevent padding from extending beyond container width
+- Fixed command parameter handling for `claude-code-chat.openChat` to properly handle both ViewColumn and Uri parameters from different invocation contexts
+
+### 🔧 Technical Improvements
+- Enhanced `show()` method to accept optional ViewColumn parameter with ViewColumn.Two as default
+- Added proper type checking for command parameters to handle context menu invocations
+- Improved webview panel positioning with flexible column parameter support
+
+### 🎨 UI/UX Improvements
+- Resolved text input container sizing issues that caused visual overflow
+- Better input field styling consistency across different VS Code themes
+
 ## [1.0.0] - 2025-01-15
 
 ### 🚀 Major Features Added

README.md

@@ -20,9 +20,9 @@ Ditch the command line and experience Claude Code like never before. This extens
 💾 **Conversation History** - Automatic conversation history and session management  
 🎨 **VS Code Native** - Claude Code integrated directly into VS Code with native theming and sidebar support  
 🧠 **Plan and Thinking modes** - Plan First and configurable Thinking modes for better results  
-⚡ **Smart File/Image Context and Custom Commands** - Reference any file, copy images or screenshots, and create custom commands  
+⚡ **Smart File/Image Context and Custom Commands** - Reference any file, paste images or screenshots and create custom commands  
 🤖 **Model Selection** - Choose between Opus, Sonnet, or Default based on your needs  
-🐧 **WSL Support** - Full Windows Subsystem for Linux integration and compatibility
+🐧 **Windows/WSL Support** - Full native Windows and WSL support
 
 ![Claude Code Chat 1 0 0](https://github.com/user-attachments/assets/5954a74c-eff7-4205-8482-6a1c9de6e102)
 
@@ -103,7 +103,7 @@ Ditch the command line and experience Claude Code like never before. This extens
 
 ### ⚡ **Slash Commands Integration**
 - **Slash Commands Modal** - Type "/" to access all Claude Code commands instantly
-- **19+ Built-in Commands** - /cost, /status, /config, /help, /memory, /review, and more
+- **23+ Built-in Commands** - /agents, /cost, /config, /memory, /review, and more
 - **Custom Command Support** - Execute any Claude Code command with session context
 - **Session-Aware Execution** - All commands run with current conversation context
 - **Terminal Integration** - Commands open directly in VS Code terminal with WSL support

claude-code-chat-permissions-mcp/mcp-permissions.ts

@@ -0,0 +1,212 @@
+import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
+import { z } from "zod";
+import * as fs from "fs";
+import * as path from "path";
+
+const server = new McpServer({
+  name: "Claude Code Permissions MCP Server",
+  version: "0.0.1",
+});
+
+// Get permissions directory from environment
+const PERMISSIONS_PATH = process.env.CLAUDE_PERMISSIONS_PATH;
+if (!PERMISSIONS_PATH) {
+  console.error("CLAUDE_PERMISSIONS_PATH environment variable not set");
+  process.exit(1);
+}
+
+
+interface WorkspacePermissions {
+  alwaysAllow: {
+    [toolName: string]: boolean | string[]; // true for all, or array of allowed commands/patterns
+  };
+}
+
+function getWorkspacePermissionsPath(): string | null {
+  if (!PERMISSIONS_PATH) return null;
+  return path.join(PERMISSIONS_PATH, 'permissions.json');
+}
+
+function loadWorkspacePermissions(): WorkspacePermissions {
+  const permissionsPath = getWorkspacePermissionsPath();
+  if (!permissionsPath || !fs.existsSync(permissionsPath)) {
+    return { alwaysAllow: {} };
+  }
+
+  try {
+    const content = fs.readFileSync(permissionsPath, 'utf8');
+    return JSON.parse(content);
+  } catch (error) {
+    console.error(`Error loading workspace permissions: ${error}`);
+    return { alwaysAllow: {} };
+  }
+}
+
+
+function isAlwaysAllowed(toolName: string, input: any): boolean {
+  const permissions = loadWorkspacePermissions();
+  const toolPermission = permissions.alwaysAllow[toolName];
+
+  if (!toolPermission) return false;
+
+  // If it's true, always allow
+  if (toolPermission === true) return true;
+
+  // If it's an array, check for specific commands (mainly for Bash)
+  if (Array.isArray(toolPermission)) {
+    if (toolName === 'Bash' && input.command) {
+      const command = input.command.trim();
+      return toolPermission.some(allowedCmd => {
+        // Support exact match or pattern matching
+        if (allowedCmd.includes('*')) {
+          // Handle patterns like "npm i *" to match both "npm i" and "npm i something"
+          const baseCommand = allowedCmd.replace(' *', '');
+          if (command === baseCommand) {
+            return true; // Exact match for base command
+          }
+          // Pattern match for command with arguments
+          const pattern = allowedCmd.replace(/\*/g, '.*');
+          return new RegExp(`^${pattern}$`).test(command);
+        }
+        return command.startsWith(allowedCmd);
+      });
+    }
+  }
+
+  return false;
+}
+
+function generateRequestId(): string {
+  return `req_${Date.now()}_${Math.random().toString(36).substring(2, 9)}`;
+}
+
+async function requestPermission(tool_name: string, input: any): Promise<{approved: boolean, reason?: string}> {
+  if (!PERMISSIONS_PATH) {
+    console.error("Permissions path not available");
+    return { approved: false, reason: "Permissions path not configured" };
+  }
+
+  // Check if this tool/command is always allowed for this workspace
+  if (isAlwaysAllowed(tool_name, input)) {
+    console.error(`Tool ${tool_name} is always allowed for this workspace`);
+    return { approved: true };
+  }
+
+  const requestId = generateRequestId();
+  const requestFile = path.join(PERMISSIONS_PATH, `${requestId}.request`);
+  const responseFile = path.join(PERMISSIONS_PATH, `${requestId}.response`);
+
+  // Write request file
+  const request = {
+    id: requestId,
+    tool: tool_name,
+    input: input,
+    timestamp: new Date().toISOString()
+  };
+
+  try {
+    fs.writeFileSync(requestFile, JSON.stringify(request, null, 2));
+
+    // Use fs.watch to wait for response file
+    return new Promise<{approved: boolean, reason?: string}>((resolve) => {
+      const timeout = setTimeout(() => {
+        watcher.close();
+        // Clean up request file on timeout
+        if (fs.existsSync(requestFile)) {
+          fs.unlinkSync(requestFile);
+        }
+        console.error(`Permission request ${requestId} timed out`);
+        resolve({ approved: false, reason: "Permission request timed out" });
+      }, 3600000); // 1 hour timeout
+
+      const watcher = fs.watch(PERMISSIONS_PATH, (eventType, filename) => {
+        if (eventType === 'rename' && filename === path.basename(responseFile)) {
+          // Check if file exists (rename event can be for creation or deletion)
+          if (fs.existsSync(responseFile)) {
+            try {
+              const responseContent = fs.readFileSync(responseFile, 'utf8');
+              const response = JSON.parse(responseContent);
+
+              // Clean up response file
+              fs.unlinkSync(responseFile);
+
+              // Clear timeout and close watcher
+              clearTimeout(timeout);
+              watcher.close();
+
+              resolve({
+                approved: response.approved,
+                reason: response.approved ? undefined : "User rejected the request"
+              });
+            } catch (error) {
+              console.error(`Error reading response file: ${error}`);
+              // Continue watching in case of read error
+            }
+          }
+        }
+      });
+
+      // Handle watcher errors
+      watcher.on('error', (error) => {
+        console.error(`File watcher error: ${error}`);
+        clearTimeout(timeout);
+        watcher.close();
+        resolve({ approved: false, reason: "File watcher error" });
+      });
+    });
+
+  } catch (error) {
+    console.error(`Error requesting permission: ${error}`);
+    return { approved: false, reason: `Error processing permission request: ${error}` };
+  }
+}
+
+server.tool(
+  "approval_prompt",
+  'Request user permission to execute a tool via VS Code dialog',
+  {
+    tool_name: z.string().describe("The name of the tool requesting permission"),
+    input: z.object({}).passthrough().describe("The input for the tool"),
+    tool_use_id: z.string().optional().describe("The unique tool use request ID"),
+  },
+  async ({ tool_name, input }) => {
+    console.error(`Requesting permission for tool: ${tool_name}`);
+
+    const permissionResult = await requestPermission(tool_name, input);
+
+    const behavior = permissionResult.approved ? "allow" : "deny";
+    console.error(`Permission ${behavior}ed for tool: ${tool_name}`);
+
+    return {
+      content: [
+        {
+          type: "text",
+          text: behavior === "allow" ?
+            JSON.stringify({
+              behavior: behavior,
+              updatedInput: input,
+            })
+            :
+            JSON.stringify({
+              behavior: behavior,
+              message: permissionResult.reason || "Permission denied",
+            })
+          ,
+        },
+      ],
+    };
+  }
+);
+
+async function main() {
+  const transport = new StdioServerTransport();
+  await server.connect(transport);
+  console.error(`Permissions MCP Server running on stdio`);
+  console.error(`Using permissions directory: ${PERMISSIONS_PATH}`);
+}
+
+main().catch((error) => {
+  console.error("Fatal error in main():", error);
+  process.exit(1);
+});

claude-code-chat-permissions-mcp/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "claude-code-chat-permissions-mcp",
+  "version": "1.0.0",
+  "main": "dist/mcp-permissions.js",
+  "scripts": {
+    "start": "tsc && node dist/mcp-permissions.js",
+    "lint": "eslint . --ext .ts",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "devDependencies": {
+    "@types/node": "^24.0.13",
+    "typescript": "^5.8.3"
+  },
+  "dependencies": {
+    "@modelcontextprotocol/sdk": "^1.15.1",
+    "zod": "^3.25.76"
+  }
+}

claude-code-chat-permissions-mcp/tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "esModuleInterop": true,
+    "target": "es6",
+    "moduleResolution": "node",
+    "sourceMap": true,
+    "outDir": "dist"
+  },
+  "lib": ["es2015"]
+}

package.json

@@ -1,8 +1,8 @@
 {
   "name": "claude-code-chat",
-  "displayName": "Claude Code Chat",
+  "displayName": "Chat for Claude Code",
   "description": "Beautiful Claude Code Chat Interface for VS Code",
-  "version": "1.0.0",
+  "version": "1.0.7",
   "publisher": "AndrePimenta",
   "author": "Andre Pimenta",
   "repository": {
@@ -56,7 +56,7 @@
         "command": "claude-code-chat.openChat",
         "title": "Open Claude Code Chat",
         "category": "Claude Code Chat",
-        "icon": "icon.png"
+        "icon": "icon-bubble.png"
       }
     ],
     "keybindings": [
@@ -133,7 +133,7 @@
           "type": "webview",
           "name": "Claude Code Chat",
           "when": "true",
-          "icon": "icon.png",
+          "icon": "icon-bubble.png",
           "contextualTitle": "Claude Code Chat"
         }
       ]
@@ -143,7 +143,7 @@
         {
           "id": "claude-code-chat",
           "title": "Claude Code Chat",
-          "icon": "icon.png"
+          "icon": "icon-bubble.png"
         }
       ]
     },

src/ui-styles.ts

@@ -86,8 +86,8 @@ const styles = `
     /* Permission Request */
     .permission-request {
         margin: 4px 12px 20px 12px;
-        background-color: var(--vscode-inputValidation-warningBackground);
+        background-color: rgba(252, 188, 0, 0.1);
-        border: 1px solid var(--vscode-inputValidation-warningBorder);
+        border: 1px solid rgba(252, 188, 0, 0.3);
         border-radius: 8px;
         padding: 16px;
         box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
@@ -302,6 +302,12 @@ const styles = `
         border: 1px solid rgba(231, 76, 60, 0.3);
     }
 
+    .permission-decision.expired {
+        background-color: rgba(128, 128, 128, 0.15);
+        color: var(--vscode-descriptionForeground);
+        border: 1px solid rgba(128, 128, 128, 0.3);
+    }
+
     .permission-decided {
         opacity: 0.7;
         pointer-events: none;
@@ -321,6 +327,11 @@ const styles = `
         background-color: var(--vscode-inputValidation-errorBackground);
     }
 
+    .permission-decided.expired {
+        border-color: var(--vscode-panel-border);
+        background-color: rgba(128, 128, 128, 0.05);
+    }
+
     /* Permissions Management */
     .permissions-list {
         max-height: 300px;
@@ -1076,34 +1087,25 @@ const styles = `
 
     .diff-line {
         padding: 2px 12px;
-        white-space: pre-wrap;
+        white-space: pre;
-        word-break: break-word;
+        font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;
+        font-size: 12px;
+        line-height: 1.5;
+    }
+
+    .diff-line.context {
+        color: var(--vscode-editor-foreground);
+        opacity: 0.8;
     }
 
     .diff-line.removed {
         background-color: rgba(244, 67, 54, 0.1);
-        border-left: 3px solid rgba(244, 67, 54, 0.6);
+        color: var(--vscode-gitDecoration-deletedResourceForeground, rgba(244, 67, 54, 0.9));
-        color: var(--vscode-foreground);
     }
 
     .diff-line.added {
         background-color: rgba(76, 175, 80, 0.1);
-        border-left: 3px solid rgba(76, 175, 80, 0.6);
+        color: var(--vscode-gitDecoration-addedResourceForeground, rgba(76, 175, 80, 0.9));
-        color: var(--vscode-foreground);
-    }
-
-    .diff-line.removed::before {
-        content: '';
-        color: rgba(244, 67, 54, 0.8);
-        font-weight: 600;
-        margin-right: 8px;
-    }
-
-    .diff-line.added::before {
-        content: '';
-        color: rgba(76, 175, 80, 0.8);
-        font-weight: 600;
-        margin-right: 8px;
     }
 
     .diff-expand-container {
@@ -1159,7 +1161,39 @@ const styles = `
         margin: 12px 0;
     }
 
+    .diff-summary-row {
+        display: flex;
+        align-items: center;
+        justify-content: space-between;
+        gap: 8px;
+        margin-top: 8px;
+        padding: 6px 12px;
+        border-top: 1px solid var(--vscode-panel-border);
+        background-color: var(--vscode-editor-background);
+    }
+
+    .diff-summary {
+        color: var(--vscode-descriptionForeground);
+        font-size: 11px;
+        font-weight: 500;
+    }
+
+    .diff-preview {
+        padding: 4px 12px;
+        color: var(--vscode-descriptionForeground);
+        font-size: 12px;
+        font-style: italic;
+        opacity: 0.9;
+    }
+
     /* File path display styles */
+    .diff-file-header {
+        display: flex;
+        align-items: center;
+        justify-content: space-between;
+        gap: 8px;
+    }
+
     .diff-file-path {
         padding: 8px 12px;
         border: 1px solid var(--vscode-panel-border);
@@ -1167,6 +1201,7 @@ const styles = `
         font-size: 12px;
         cursor: pointer;
         transition: all 0.2s ease;
+        flex: 1;
     }
 
     .diff-file-path:hover {
@@ -1178,6 +1213,35 @@ const styles = `
         transform: translateY(1px);
     }
 
+    .diff-open-btn {
+        display: inline-flex;
+        align-items: center;
+        gap: 5px;
+        background: transparent;
+        border: 1px solid var(--vscode-button-secondaryBorder, var(--vscode-panel-border));
+        color: var(--vscode-foreground);
+        padding: 4px 10px;
+        border-radius: 3px;
+        font-size: 11px;
+        cursor: pointer;
+        transition: all 0.2s ease;
+        white-space: nowrap;
+    }
+
+    .diff-open-btn svg {
+        flex-shrink: 0;
+    }
+
+    .diff-open-btn:hover {
+        background: var(--vscode-button-secondaryHoverBackground, rgba(255, 255, 255, 0.1));
+        border-color: var(--vscode-focusBorder);
+        opacity: 1;
+    }
+
+    .diff-open-btn:active {
+        transform: translateY(1px);
+    }
+
     .file-path-short,
     .file-path-truncated {
         font-family: var(--vscode-editor-font-family);
@@ -1350,13 +1414,14 @@ const styles = `
 
     .input-field {
         width: 100%;
+        box-sizing: border-box;
         background-color: transparent;
         color: var(--vscode-input-foreground);
         border: none;
         padding: 12px;
         outline: none;
         font-family: var(--vscode-editor-font-family);
-        min-height: 20px;
+        min-height: 68px;
         line-height: 1.4;
         overflow-y: hidden;
         resize: none;
@@ -2873,6 +2938,60 @@ const styles = `
         overflow: hidden;
         text-overflow: ellipsis;
     }
+
+    /* Processing indicator - morphing orange dot */
+    .processing-indicator {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        gap: 10px;
+        padding: 12px 0;
+        margin-top: 8px;
+    }
+
+    .processing-indicator .morph-dot {
+        width: 8px;
+        height: 8px;
+        background: linear-gradient(135deg, #ff9500 0%, #ff6b00 100%);
+        box-shadow: 0 0 8px rgba(255, 149, 0, 0.5);
+        animation: morphShape 3s ease-in-out infinite;
+    }
+
+    @keyframes morphShape {
+        0%, 100% {
+            border-radius: 50%;
+            transform: scale(1) rotate(0deg);
+        }
+        15% {
+            border-radius: 50%;
+            transform: scale(1.3) rotate(0deg);
+        }
+        25% {
+            border-radius: 20%;
+            transform: scale(1) rotate(45deg);
+        }
+        40% {
+            border-radius: 20%;
+            transform: scale(1.2) rotate(90deg);
+        }
+        50% {
+            border-radius: 50% 50% 50% 0%;
+            transform: scale(1) rotate(135deg);
+        }
+        65% {
+            border-radius: 0%;
+            transform: scale(1.3) rotate(180deg);
+        }
+        75% {
+            border-radius: 50% 0% 50% 0%;
+            transform: scale(1) rotate(270deg);
+        }
+        85% {
+            border-radius: 30%;
+            transform: scale(1.2) rotate(315deg);
+        }
+    }
+
 </style>`
 
 export default styles

tsconfig.json

@@ -15,6 +15,7 @@
 		// "noUnusedParameters": true,  /* Report errors on unused parameters. */
 	},
 	"exclude": [
-		"mcp-permissions.js"
+		"mcp-permissions.js",
+		"claude-code-chat-permissions-mcp"
 	]
 }