Update student guide with full app.py documentation

Add clone/venv setup instructions, feature descriptions for both tabs,
sidebar parameter table, and clarify that files stay local.

Made-with: Cursor

STUDENT_GUIDE.md

@@ -109,12 +109,21 @@ curl http://silicon.fhgr.ch:7080/v1/chat/completions \
 
 ## Streamlit Chat & File Editor App
 
-A simple web UI is included for chatting with the model and editing files.
+A web UI is included for chatting with the model and editing files. It runs
+on your own machine and connects to the GPU server.
 
 ### Setup
 
 ```bash
-pip install streamlit openai
+# Clone the repository
+git clone https://gitea.fhgr.ch/herzogfloria/LLM_Inferenz_Server_1.git
+cd LLM_Inferenz_Server_1
+
+# Create a virtual environment and install dependencies
+python3 -m venv .venv
+source .venv/bin/activate        # macOS / Linux
+# .venv\Scripts\activate         # Windows
+pip install -r requirements.txt
 ```
 
 ### Run
@@ -123,18 +132,40 @@ pip install streamlit openai
 streamlit run app.py
 ```
 
-This opens a browser with two tabs:
+Opens at `http://localhost:8501` in your browser.
 
-- **Chat** — Conversational interface with streaming responses. You can save
-  the model's last response directly to a file.
-- **File Editor** — Create and edit `.py`, `.tex`, `.html`, or any text file.
-  Use the "Generate with LLM" button to have the model modify your file based
-  on an instruction (e.g. "add error handling" or "fix the LaTeX formatting").
+### Features
 
-Files are stored in a `workspace/` folder next to `app.py`.
+**Chat Tab**
+- Conversational interface with streaming responses
+- "Save code" button extracts code from the LLM response and saves it to a
+  workspace file (strips markdown formatting automatically)
 
-> **Tip**: The app runs on your local machine and connects to the server — you
-> don't need to install anything on the GPU server.
+**File Editor Tab**
+- Create and edit `.py`, `.tex`, `.html`, or any text file
+- Syntax-highlighted preview of file content
+- "Generate with LLM" button: describe a change in natural language and the
+  model rewrites the file (e.g. "add error handling", "fix the LaTeX formatting",
+  "translate comments to German")
+
+**Sidebar Controls**
+- **Connection**: API Base URL and API Key
+- **LLM Parameters**: Adjustable for each request
+
+| Parameter | Default | What it does |
+|-----------|---------|--------------|
+| Thinking Mode | Off | Toggle chain-of-thought reasoning (better for complex tasks, slower) |
+| Temperature | 0.7 | Lower = predictable, higher = creative |
+| Max Tokens | 4096 | Maximum response length |
+| Top P | 0.95 | Nucleus sampling threshold |
+| Presence Penalty | 0.0 | Encourage diverse topics |
+
+- **File Manager**: Create new files and switch between them
+
+All generated files are stored in a `workspace/` folder next to `app.py`.
+
+> **Tip**: The app runs entirely on your local machine. Only the LLM requests
+> go to the server — your files stay local.
 
 ---