AI Social Media Agent: Automate posting on Instagram using AI

[kritagya-khanna]

🚀 Overview
This PR adds comprehensive Instagram automation to the AI Twitter Agent, enabling automatic Instagram posting alongside Twitter with intelligent login management and platform-specific configurations.
✨ Key Features

🔐 Smart Authentication

• Auto Login Detection: Detects Instagram login status using WebContents
• Profile Verification: Validates correct username by checking settings access
• Secure Credential Management: Platform-separated credential storage
• Auto-Logout: Logs out incorrect accounts automatically

🤖 Auto-Posting Engine

• WebContents Automation: Uses background WebContents (ID 3) for reliable Instagram interaction
• AI Content Generation: Leverages Claude/OpenAI/Gemini for Instagram content
• Independent Scheduling: Separate posting intervals for Instagram vs Twitter
• Error Recovery: Robust error handling with automatic retries

🎛️ Enhanced Dashboard

• Platform Tabs: Clean Twitter/Instagram separation
• Platform-Specific Settings: Dedicated configuration panels
• Real-time Status: Live indicators for both platforms
• Independent Control: Start/stop agents per platform

🔄 Workflow

• Agent Start: Login check → Profile validation → Alarm creation
• Posting Process: Content generation → Login verification → Post creation → Submission
• Error Handling: Automatic retries and cleanup on failures