Fix Dockerfile paths for HF Spaces

- Change docker/requirements.txt → requirements.txt
- Change ../src/ → src/
- Change ../models/ → models/
- Change ../main.py → main.py
- Remove unnecessary README.md copy

Files are synced to HF Space root, not docker/ subdirectory.
This fixes build error: docker/requirements.txt not found

Dockerfile

@@ -29,18 +29,17 @@ WORKDIR $HOME/app
 RUN pip install --no-cache-dir --upgrade pip
 
 # Copy requirements first for better Docker layer caching
-COPY --chown=user docker/requirements.txt $HOME/app/
+COPY --chown=user requirements.txt $HOME/app/
 
 # Install Python dependencies
 RUN pip install --no-cache-dir --user -r requirements.txt
 
-# Copy the source code from parent directory
-COPY --chown=user ../src/ $HOME/app/src/
-COPY --chown=user ../models/ $HOME/app/models/
+# Copy the source code
+COPY --chown=user src/ $HOME/app/src/
+COPY --chown=user models/ $HOME/app/models/
 
-# Copy the main entry point from parent directory
-COPY --chown=user ../main.py $HOME/app/
-COPY --chown=user ../README.md $HOME/app/
+# Copy the main entry point
+COPY --chown=user main.py $HOME/app/
 
 # Expose the port that the app runs on (HF Spaces default is 7860)
 EXPOSE 7860