feat: add VS Code extension for QyverixAI API integration (imDarshanGK#161)

Co-authored-by: ionfwsrijan <ionfwsrijan@users.noreply.github.com>
Co-authored-by: Darshan G K <122042809+imDarshanGK@users.noreply.github.com>

Author: ionfwsrijan

vscode-extension/.vscodeignore

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+.vscode/**
+.vscode-test/**
+node_modules/**
+src/**
+tsconfig.json
+.gitignore
+**/*.ts
+**/*.map

vscode-extension/README.md

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+# QyverixAI VS Code Extension
+
+Analyze, debug, and explain code directly from VS Code using the [QyverixAI](https://qyverixai.onrender.com) API.
+
+## Features
+
+- **🧪 Analyze** (`qyverixai.analyze`) — Full code analysis: explanation, bug detection, and improvement suggestions in one go. Sets inline diagnostics (squiggly lines) for detected issues.
+- **🐛 Debug** (`qyverixai.debug`) — Scan the current file for bugs, errors, and warnings. Inline diagnostics highlight problem areas in the editor.
+- **📖 Explain** (`qyverixai.explain`) — Get a plain-English summary of what the code does, its complexity, key points, and structure.
+
+## Usage
+
+1. Open any file in VS Code.
+2. Right-click in the editor and select:
+   - **QyverixAI: Analyze Current File**
+   - **QyverixAI: Debug Current File**
+   - **QyverixAI: Explain Current File**
+
+   Or use the Command Palette (`Ctrl+Shift+P`) and type `QyverixAI`.
+
+3. A WebView panel opens beside your editor with the results.
+4. For **Analyze** and **Debug**, squiggly lines appear in the editor at the locations of detected issues. Open the **Problems** panel (`Ctrl+Shift+M`) to see the full list.
+
+## Requirements
+
+- VS Code 1.82+
+- The QyverixAI API must be running and reachable. The extension defaults to the hosted API at `https://qyverixai.onrender.com`.
+
+## Extension Settings
+
+This extension contributes the following settings:
+
+| Setting | Default | Description |
+|---|---|---|
+| `qyverixai.apiUrl` | `https://qyverixai.onrender.com` | Base URL of the QyverixAI API |
+| `qyverixai.timeout` | `30` | Request timeout in seconds |
+
+## Known Issues
+
+- The API works best with complete, syntactically valid files.
+- Very large files (>50 KB) may be truncated by the API's 50 000 character limit.
+
+## Development
+
+```bash
+cd vscode-extension
+npm install -g @vscode/vsce
+vsce package
+code --install-extension qyverixai-vscode-*.vsix
+```
+
+## License
+
+MIT

vscode-extension/package.json

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+{
+  "name": "qyverixai-vscode",
+  "displayName": "QyverixAI Code Assistant",
+  "description": "Analyze, debug, and explain code directly from VS Code using the QyverixAI API",
+  "version": "0.1.0",
+  "publisher": "qyverixai",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/imDarshanGK/AI-dev-assistant.git"
+  },
+  "engines": {
+    "vscode": "^1.82.0"
+  },
+  "categories": [
+    "Programming Languages",
+    "Linters",
+    "Other"
+  ],
+  "keywords": [
+    "qyverixai",
+    "code analysis",
+    "debugging",
+    "code explanation",
+    "ai"
+  ],
+  "activationEvents": [
+    "onCommand:qyverixai.analyze",
+    "onCommand:qyverixai.debug",
+    "onCommand:qyverixai.explain"
+  ],
+  "main": "./extension.js",
+  "contributes": {
+    "commands": [
+      {
+        "command": "qyverixai.analyze",
+        "title": "QyverixAI: Analyze Current File"
+      },
+      {
+        "command": "qyverixai.debug",
+        "title": "QyverixAI: Debug Current File"
+      },
+      {
+        "command": "qyverixai.explain",
+        "title": "QyverixAI: Explain Current File"
+      }
+    ],
+    "menus": {
+      "editor/context": [
+        {
+          "command": "qyverixai.analyze",
+          "group": "1_modification"
+        },
+        {
+          "command": "qyverixai.debug",
+          "group": "1_modification"
+        },
+        {
+          "command": "qyverixai.explain",
+          "group": "1_modification"
+        }
+      ]
+    },
+    "configuration": {
+      "title": "QyverixAI",
+      "properties": {
+        "qyverixai.apiUrl": {
+          "type": "string",
+          "default": "https://qyverixai.onrender.com",
+          "description": "Base URL of the QyverixAI API (e.g. https://qyverixai.onrender.com or http://localhost:8000)"
+        },
+        "qyverixai.timeout": {
+          "type": "number",
+          "default": 30,
+          "description": "Request timeout in seconds"
+        }
+      }
+    }
+  }
+}