fix: Update Rust toolchain and Docker build dependencies (#156)

## Summary
- Upgraded Rust toolchain from 1.87 to 1.88 for latest compiler
improvements
- Updated Docker build environment with latest paritytech base image and
build tools
- Fixed node branding and support URL to reflect DataHaven project

## Changes

### Rust Toolchain Update (`rust-toolchain.toml`)
- Upgraded from Rust 1.87 to 1.88

### Docker Build Environment (`Dockerfile`)
- Updated base image from `paritytech/ci-unified:bullseye-1.85.0` to
`bullseye-1.88.0`
- Upgraded mold linker from v2.39.0 to v2.40.4 for faster builds
- Added protoc v21.12 for protobuf compilation support
- Added libpq-dev dependency for PostgreSQL integration
- Updated cargo-chef from 0.1.71 to 0.1.72

---------

Co-authored-by: Claude <noreply@anthropic.com>

.github/workflows/DOCKER-PROD.yml

@@ -36,7 +36,7 @@ jobs:
         with:
           ref: ${{ github.event.inputs.branch || github.ref }}
 
-      - uses: ./.github/workflows/actions/cleanup-runner
+      # Cleanup-runner skipped on self-hosted runners (bare-metal manages disk space externally)
 
       - name: Docker meta (dispatch)
         if: github.event_name == 'workflow_dispatch'

operator/Dockerfile

@@ -1,25 +1,31 @@
 #  --- Setup Build Environment ---
-FROM docker.io/paritytech/ci-unified:bullseye-1.85.0 AS base
+FROM docker.io/paritytech/ci-unified:bullseye-1.88.0 AS base
 
-ARG MOLD_VERSION=2.39.0
+ARG MOLD_VERSION=2.40.4
+ARG PROTOC_VER=21.12
 ARG SCCACHE_VERSION=0.10.0
 ARG FAST_RUNTIME=FALSE
 RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     xz-utils \
     clang \
+    libpq-dev \
     && echo "Installing mold v${MOLD_VERSION}..." \
     && curl -Lo mold.tar.gz "https://github.com/rui314/mold/releases/download/v${MOLD_VERSION}/mold-${MOLD_VERSION}-x86_64-linux.tar.gz" \
     && tar -xf mold.tar.gz --strip-components=1 -C /usr/local \
     && rm mold.tar.gz \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* \
+    && echo "Installing protoc v${PROTOC_VER}..." \
+    && curl -Lo protoc.zip "https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VER}/protoc-${PROTOC_VER}-linux-x86_64.zip" \
+    && unzip -q protoc.zip -d /usr/local/ \
+    && rm protoc.zip \
     && echo "Installing sccache v${SCCACHE_VERSION}..." \
     && curl -Lo sccache.tar.gz "https://github.com/mozilla/sccache/releases/download/v${SCCACHE_VERSION}/sccache-v${SCCACHE_VERSION}-x86_64-unknown-linux-musl.tar.gz" \
     && tar -xf sccache.tar.gz --strip-components=1 -C /usr/local/bin sccache-v${SCCACHE_VERSION}-x86_64-unknown-linux-musl/sccache \
     && rm sccache.tar.gz
 
-RUN cargo install cargo-chef --version 0.1.71 --locked
+RUN cargo install cargo-chef --version 0.1.72 --locked
 
 ENV RUSTC_WRAPPER=sccache \
     SCCACHE_DIR=/usr/local/sccache \

operator/node/src/command.rs

@@ -65,7 +65,7 @@ pub struct ProviderOptions {
 
 impl SubstrateCli for Cli {
     fn impl_name() -> String {
-        "Substrate Node".into()
+        "DataHaven Node".into()
     }
 
     fn impl_version() -> String {
@@ -81,7 +81,7 @@ impl SubstrateCli for Cli {
     }
 
     fn support_url() -> String {
-        "support.anonymous.an".into()
+        "https://github.com/datahaven-xyz/datahaven/issues/new".into()
     }
 
     fn copyright_start_year() -> i32 {

operator/rust-toolchain.toml

@@ -1,5 +1,5 @@
 [toolchain]
-channel = "1.87"
+channel = "1.88"
 components = [
     "cargo",
     "clippy",