🧠 AI Knowledge Hub (v46.1 Stable)

A "Local Second Brain" for your AI conversations. Single HTML file. No Install. 100% Private.

🚀 Why I built this?

I use Google Gemini (and Claude/ChatGPT) daily for coding, business planning, and creative writing. But I ran into a problem: managing the chaos.

I kept losing the context of my best conversations. Brilliant prompts and complex project discussions were buried under a pile of "Untitled Chats" in my history. I tried Notion, Obsidian, and Trello, but they felt too heavy/slow for simply saving chat links.

I needed something fast, private, and visual. So, I built Gemini Knowledge Hub.

✨ Key Features

🎨 UI & Experience

• 📂 Zero Installation: It's just ONE HTML file. No servers, no databases, no npm install. Just download and open in your browser.
• 🌙 Dark Mode (v46): Native dark mode support for late-night coding sessions. Persists your preference automatically.
• 🔎 Smart Search: Hybrid search bar with auto-complete suggestions for tags and an instant "Clear" button.

⚡ Workflow

• 🚦 Kanban Dashboard: Organize chats into Ideas, Pins (High Priority), Projects (Active), and Archive.
• ☁️ Hybrid Linking: Each card links to the Live Cloud Chat (to continue working) AND a Local HTML Backup (to preserve the context forever).
• ✅ Task Tracking: Add checklists to cards. Unfinished tasks auto-tag the card as ⚠️ Pending.
• 🏷️ Smart Tagging: Organize by topic (#python, #marketing). Click any tag to filter the board instantly.

🔒 Data & Privacy

• 🛡️ Local-First: All data lives in your browser's localStorage. Nothing is sent to any server.
• 💾 Timestamped Backups: Export your entire database to a .json file with HH-MM timestamps (e.g., backup_2025-11-25_14-30.json).
• 🚑 Rescue Mode: Automatic sanitization system that detects and fixes corrupt legacy data on startup to prevent crashes.

📸 Screenshots

🛠️ How to Use

1. Download the index.html file (or Gemini_Hub.html) from this repository.
2. Create a folder on your computer (e.g., My_AI_Projects).
3. Place the file inside that folder.
4. Open it in any modern browser (Chrome, Edge, Firefox, Brave).
5. Click "+ New Chat" to start organizing!

Universal Compatibility: While I built this for Gemini, it works perfectly for ChatGPT, Claude, Perplexity, or even organizing YouTube tutorials and GitHub repos.

☁️ Pro Tip: Sync across devices

Since the app is just one file, you can save the HTML and your exported .json backups in OneDrive, Dropbox, or Google Drive.

• The File: Syncs automatically via your cloud provider.
• The Data: To move your board state to another computer, click the Export Backup button on PC 1, and Import Backup on PC 2.

🔄 Update Log (v46.1)

• Feature: Added native Dark Mode toggle 🌙.
• Feature: "Rescue Mode" added to prevent loading freezes on legacy data.
• Feature: Backup filenames now include timestamps to prevent overwriting.
• UX: Action buttons moved to card footer; Title links are now "smart" (only clickable if a link exists).
• Localization: Fully translated to English for universal usage.

📄 License

MIT License. Free and Open Source. Feel free to fork, modify, and make it your own!

Built with ❤️ (and a lot of help from Gemini) by Martin Santos Temponi.