chore: rebrand project to GopherGate

Updated all naming from LLM Proxy to GopherGate. Implemented new CSS-based branding and updated Go module/binary naming.

README.md

@@ -1,4 +1,4 @@
-# LLM Proxy Gateway
+# GopherGate
 
 A unified, high-performance LLM proxy gateway built in Go. It provides a single OpenAI-compatible API to access multiple providers (OpenAI, Gemini, DeepSeek, Grok, Ollama) with built-in token tracking, real-time cost calculation, multi-user authentication, and a management dashboard.
 
@@ -27,7 +27,7 @@ A unified, high-performance LLM proxy gateway built in Go. It provides a single
 
 ## Security
 
-LLM Proxy is designed with security in mind:
+GopherGate is designed with security in mind:
 
 - **Signed Session Tokens:** Management dashboard sessions are secured using HMAC-SHA256 signed tokens.
 - **Encrypted Storage:** Support for encrypted provider API keys in the database.
@@ -55,8 +55,8 @@ LLM Proxy is designed with security in mind:
 1. Clone and build:
    ```bash
    git clone <repository-url>
-   cd llm-proxy
-   go build -o llm-proxy ./cmd/llm-proxy
+   cd gophergate
+   go build -o gophergate ./cmd/gophergate
    ```
 
 2. Configure environment:
@@ -70,7 +70,7 @@ LLM Proxy is designed with security in mind:
 
 3. Run the proxy:
    ```bash
-   ./llm-proxy
+   ./gophergate
    ```
 
 The server starts on `http://0.0.0.0:8080` by default.
@@ -79,13 +79,13 @@ The server starts on `http://0.0.0.0:8080` by default.
 
 ```bash
 # Build the container
-docker build -t llm-proxy .
+docker build -t gophergate .
 
 # Run the container
 docker run -p 8080:8080 \
   -e LLM_PROXY__ENCRYPTION_KEY=your-secure-key \
   -v ./data:/app/data \
-  llm-proxy
+  gophergate
 ```
 
 ## Management Dashboard
@@ -107,7 +107,7 @@ Access the dashboard at `http://localhost:8080`.
 **Forgot Password?**
 You can reset the admin password to default by running:
 ```bash
-./llm-proxy -reset-admin
+./gophergate -reset-admin
 ```
 
 ## API Usage