chore: add .dockerignore and update Dockerfile to use debian:trixie-slim

Dockerfile

@@ -6,14 +6,15 @@ COPY . .
 # Build the release binary
 RUN cargo build --release -p api
 
-FROM debian:bookworm-slim
+FROM debian:trixie-slim
 
 WORKDIR /app
 
-# Install OpenSSL, CA certs, and ffmpeg (provides ffprobe for local-files duration scanning)
+# Install OpenSSL, CA certs
 RUN apt-get update && apt-get install -y --no-install-recommends \
     libssl3 \
     ca-certificates \
+    libsqlite3-0 \
     && rm -rf /var/lib/apt/lists/*
 
 COPY --from=builder /app/target/release/api .