feat: 🎉 Vectors na Vectors, the begining

Translate 1536 <-> 768 , 3072 <-> 2048

Dockerfile

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+# ── build stage ───────────────────────────────────────────────────────────────
+FROM golang:1.26-alpine AS builder
+
+WORKDIR /src
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -trimpath -ldflags="-s -w" -o /vecna ./cmd/vecna
+
+# ── runtime stage ──────────────────────────────────────────────────────────────
+FROM alpine:3.21
+
+RUN apk add --no-cache ca-certificates
+
+COPY --from=builder /vecna /usr/local/bin/vecna
+
+EXPOSE 8080
+
+ENTRYPOINT ["vecna"]
+CMD ["serve"]