feat(flowctl-rust): platform-grade Rust rewrite — 6 crates, 26k lines, 224 tests

.github/workflows/ci.yml

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+name: Rust CI
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "flowctl/**"
+      - ".github/workflows/ci.yml"
+  pull_request:
+    paths:
+      - "flowctl/**"
+      - ".github/workflows/ci.yml"
+
+env:
+  CARGO_TERM_COLOR: always
+
+defaults:
+  run:
+    working-directory: flowctl
+
+jobs:
+  check:
+    name: Check / Test / Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy, rustfmt
+
+      - name: Cache cargo registry & build
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            flowctl/target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('flowctl/Cargo.lock') }}
+          restore-keys: ${{ runner.os }}-cargo-
+
+      - name: cargo fmt --check
+        run: cargo fmt --all -- --check
+
+      - name: cargo clippy
+        run: cargo clippy --all-targets -- -D warnings
+
+      - name: cargo build
+        run: cargo build --all-targets
+
+      - name: cargo test
+        run: cargo test --all-targets

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+
+env:
+  CARGO_TERM_COLOR: always
+
+defaults:
+  run:
+    working-directory: flowctl
+
+jobs:
+  build:
+    name: Build ${{ matrix.target }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - target: x86_64-unknown-linux-gnu
+            os: ubuntu-latest
+          - target: aarch64-unknown-linux-gnu
+            os: ubuntu-latest
+          - target: x86_64-apple-darwin
+            os: macos-latest
+          - target: aarch64-apple-darwin
+            os: macos-latest
+          - target: x86_64-pc-windows-msvc
+            os: windows-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+
+      - name: Install cross-compilation tools (Linux aarch64)
+        if: matrix.target == 'aarch64-unknown-linux-gnu'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
+          echo "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc" >> "$GITHUB_ENV"
+
+      - name: Cache cargo registry & build
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            flowctl/target
+          key: ${{ runner.os }}-${{ matrix.target }}-cargo-${{ hashFiles('flowctl/Cargo.lock') }}
+          restore-keys: ${{ runner.os }}-${{ matrix.target }}-cargo-
+
+      - name: Build release binary
+        run: cargo build --release --target ${{ matrix.target }} -p flowctl-cli
+
+      - name: Determine binary name
+        id: bin
+        shell: bash
+        run: |
+          if [[ "${{ matrix.target }}" == *windows* ]]; then
+            echo "name=flowctl.exe" >> "$GITHUB_OUTPUT"
+            echo "archive=flowctl-${{ github.ref_name }}-${{ matrix.target }}.zip" >> "$GITHUB_OUTPUT"
+          else
+            echo "name=flowctl" >> "$GITHUB_OUTPUT"
+            echo "archive=flowctl-${{ github.ref_name }}-${{ matrix.target }}.tar.gz" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Package (Unix)
+        if: "!contains(matrix.target, 'windows')"
+        run: |
+          cd target/${{ matrix.target }}/release
+          tar czf "../../../${{ steps.bin.outputs.archive }}" ${{ steps.bin.outputs.name }}
+
+      - name: Package (Windows)
+        if: contains(matrix.target, 'windows')
+        shell: bash
+        run: |
+          cd target/${{ matrix.target }}/release
+          7z a "../../../${{ steps.bin.outputs.archive }}" ${{ steps.bin.outputs.name }}
+
+      - name: Generate SHA256
+        shell: bash
+        run: |
+          if [[ "$RUNNER_OS" == "macOS" ]]; then
+            shasum -a 256 "${{ steps.bin.outputs.archive }}" > "${{ steps.bin.outputs.archive }}.sha256"
+          else
+            sha256sum "${{ steps.bin.outputs.archive }}" > "${{ steps.bin.outputs.archive }}.sha256"
+          fi
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.target }}
+          path: |
+            flowctl/${{ steps.bin.outputs.archive }}
+            flowctl/${{ steps.bin.outputs.archive }}.sha256
+
+  release:
+    name: Create GitHub Release
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+          merge-multiple: true
+
+      - name: Create release
+        uses: softprops/action-gh-release@v2
+        with:
+          generate_release_notes: true
+          files: |
+            artifacts/*

flowctl/.gitignore

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+/target/