Initial commit: Telegram Sticker Bot Manager

Features:
- Create and manage sticker packs
- Add existing sticker sets to database
- Automatic image optimization (512px, WebP conversion)
- GIF to animated video sticker conversion (WebM, VP9)
- Background removal (local rembg + optional Remove.bg API)
- Hybrid API with retry logic and usage tracking
- Premium status detection
- SQLite database for persistence
- Docker containerization
- Complete OPENCODE.md documentation

Technical Stack:
- python-telegram-bot 22.7
- Pillow for image processing
- FFmpeg for video conversion
- rembg for local background removal
- aiosqlite for async database operations

Dockerfile

@@ -0,0 +1,31 @@
+FROM python:3.11-alpine
+
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+# Install system dependencies
+RUN apk add --no-cache gcc musl-dev ffmpeg
+
+# Set work directory
+WORKDIR /app
+
+# Copy requirements first for better caching
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy project
+COPY . .
+
+# Create non-root user
+RUN adduser -D -u 1000 appuser && chown -R appuser:appuser /app
+USER appuser
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD python -c "import sys; sys.exit(0)"
+
+# Run the bot
+CMD ["python", "bot.py"]