refactor(aisidebar): restructure project and implement reasoning mode toggle

- Reorganize project structure and file locations
- Add ReasoningController to manage model selection and reasoning mode
- Update design and requirements for reasoning mode toggle
- Implement model switching between Qwen3-4B-Instruct and Qwen3-4B-Thinking models
- Remove deprecated files and consolidate project layout
- Add new steering and specification documentation
- Clean up and remove unnecessary files and directories
- Prepare for enhanced AI sidebar functionality with more flexible model handling

data/conversations/archive_20251026_075756_53b92057.json

@@ -0,0 +1,43 @@
+{
+  "id": "archive_20251026_075756_53b92057",
+  "title": "",
+  "created_at": "2025-10-26T07:52:59.714612+00:00",
+  "updated_at": "2025-10-26T07:55:49.231096+00:00",
+  "messages": [
+    {
+      "role": "assistant",
+      "content": "New conversation started. Previous conversation archived.",
+      "timestamp": "2025-10-26T07:52:59.716843+00:00"
+    },
+    {
+      "role": "user",
+      "content": "How are you",
+      "timestamp": "2025-10-26T07:53:03.474599+00:00"
+    },
+    {
+      "role": "assistant",
+      "content": "I'm doing well, thank you! I'm here to help with any questions or tasks you might have. How can I assist you today? 😊",
+      "timestamp": "2025-10-26T07:53:10.115769+00:00"
+    },
+    {
+      "role": "user",
+      "content": "Hello there",
+      "timestamp": "2025-10-26T07:55:19.057072+00:00"
+    },
+    {
+      "role": "assistant",
+      "content": "Hello! 😊 It's great to see you again. How can I help you today?",
+      "timestamp": "2025-10-26T07:55:21.666512+00:00"
+    },
+    {
+      "role": "user",
+      "content": "What is the purpose of python",
+      "timestamp": "2025-10-26T07:55:29.257049+00:00"
+    },
+    {
+      "role": "assistant",
+      "content": "That's a great question! 😊 **Python's primary purpose** is to be a **versatile, high-level programming language** designed for **readability, simplicity, and productivity**. Here’s a clear breakdown of its key purposes:\n\n---\n\n### 🌟 Core Purposes of Python:\n1. **General-Purpose Programming**  \n   Python can solve problems across *any* domain:  \n   → Web development (Django, Flask)  \n   → Data science & AI (Pandas, TensorFlow, PyTorch)  \n   → Automation (scripting tasks, file handling)  \n   → Scientific computing (NumPy, SciPy)  \n   → Education (easy syntax for beginners)  \n   → Cloud services (AWS, Google Cloud)  \n   → And more!  \n\n2. **Readability & Simplicity**  \n   Python uses clean, human-readable syntax (e.g., `print(\"Hello\")` instead of `printf(\"Hello\");`). This makes it:  \n   → Easy to learn for beginners  \n   → Faster to write and debug  \n   → Great for collaborative projects  \n\n3. **Community & Ecosystem**  \n   Python has **millions of libraries** (like `requests` for APIs, `matplotlib` for data visualization) that let developers solve complex problems *without* reinventing the wheel.  \n\n4. **Cross-Platform Compatibility**  \n   Python runs on Windows, macOS, Linux, and even embedded systems — no extra setup needed!\n\n---\n\n### 💡 Why Python Stands Out:\n- **\"Batteries included\"**: Comes with built-in tools for common tasks (e.g., file I/O, networking).  \n- **Used by giants**: Google, Netflix, Spotify, NASA, and major tech companies rely on Python.  \n- **Not just for beginners**: Professionals use it for AI/ML, big data, and enterprise apps.\n\n---\n\n### 🚫 Common Misconceptions:\n- ❌ *\"Python is only for beginners.\"*  \n  → **Truth**: It’s used by experts for complex systems (e.g., AI models, financial trading).  \n- ❌ *\"Python is slow.\"*  \n  → **Truth**: It’s fast *for its simplicity* and often outperforms other languages in specific tasks (like data analysis).\n\n---\n\n### In a nutshell:  \n> **Python exists to let developers write clear, efficient code quickly — whether they’re building a simple script, a web app, or an AI model.**  \n\nIf you’re curious about a specific use case (like \"How do I use Python for data analysis?\" or \"Can Python make websites?\"), just ask! 😊 I’d love to help you dive deeper. What interests you most?",
+      "timestamp": "2025-10-26T07:55:49.231096+00:00"
+    }
+  ]
+}