feat: add /deploy-plugins webhook route + deploy-plugins script

compose/nomos/Dockerfile

@@ -1,26 +0,0 @@
-# Nomos agent container — standalone MCP client gateway (Phase 4)
-FROM golang:1.26-alpine AS builder
-
-RUN apk add --no-cache git ca-certificates
-
-WORKDIR /build
-COPY go.mod go.sum ./
-RUN go mod download
-
-COPY . .
-
-RUN CGO_ENABLED=0 go build -o /nomos -tags timetzdata -ldflags="-s -w" ./cmd/nomos
-
-FROM gcr.io/distroless/static:nonroot
-
-COPY --from=builder /nomos /nomos
-COPY nomos/ /app/nomos/
-
-ENV NOMOS_MCP_URL=http://api:8090/mcp
-ENV NOMOS_AGENT_SLUG=agent:nomos
-ENV NOMOS_LISTEN=:8092
-ENV NOMOS_MODEL=deepseek/deepseek-v4-pro
-
-EXPOSE 8092
-
-ENTRYPOINT ["/nomos", "serve"]