feat(device-inventory): add management web UI and pciutils for NIC discovery

- web-ui/main.go: full CRUD REST API + dark-theme SPA (servers, parts, part-types)
- Dockerfile.cli: add pciutils runtime dep for lspci NIC enrichment

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

services/device-inventory/Dockerfile.cli

@@ -1,4 +1,4 @@
-FROM ubuntu:24.04 AS builder
+FROM ubuntu:22.04 AS builder
 RUN apt-get update && apt-get install -y --no-install-recommends \
         cmake make g++ && \
     rm -rf /var/lib/apt/lists/*
@@ -7,7 +7,7 @@ COPY . .
 RUN rm -rf build && cmake -S . -B build -DCMAKE_BUILD_TYPE=Release && \
     cmake --build build --parallel
 
-FROM ubuntu:24.04
+FROM ubuntu:22.04
 RUN apt-get update && apt-get install -y --no-install-recommends \
         dmidecode iproute2 util-linux pciutils libstdc++6 && \
     rm -rf /var/lib/apt/lists/*