feat: overhaul CI into reusable workflow with nightly and PR triggers

Author: redpanda-f

.github/workflows/ci_nightly.yml

@@ -0,0 +1,53 @@
+---
+# Runs on a nightly schedule (and optionally via manual dispatch).
+#
+# Executes the full CI matrix: stability (latest tags) and frontier
+# (latest branches). Both runs file GitHub issues with their results
+# unless manually suppressed via workflow_dispatch inputs.
+
+name: CI (Nightly)
+
+on:
+  # TODO: Remove this before you allow this PR to go into the main
+  # pull_request trigger is just for testing
+  pull_request:
+    branches: ['main']
+  schedule:
+    # Nightly at 03:00 UTC
+    - cron: '0 3 * * *'
+  workflow_dispatch:
+    inputs:
+      reporting:
+        description: 'Create GitHub issue with scenario report'
+        type: boolean
+        default: false
+      skip_report_on_pass:
+        description: 'Skip filing issue when all scenarios pass'
+        type: boolean
+        default: true
+
+jobs:
+  foc-devnet-test:
+    strategy:
+      fail-fast: false
+      max-parallel: 1
+      matrix:
+        include:
+          - name: stability
+            init_flags: "--curio latesttag:pdpv0 --filecoin-services latesttag:main"
+            issue_label: scenarios-run-stability
+            issue_title: "FOC Devnet scenarios run report (stability)"
+          - name: frontier
+            init_flags: "--curio gitbranch:pdpv0 --filecoin-services gitbranch:main"
+            issue_label: scenarios-run-frontier
+            issue_title: "FOC Devnet scenarios run report (frontier)"
+    uses: ./.github/workflows/ci_run.yml
+    with:
+      name: ${{ matrix.name }}
+      init_flags: ${{ matrix.init_flags }}
+      # Reporting is always on for scheduled runs; for manual dispatch it follows the input.
+      enable_reporting: ${{ github.event_name == 'schedule' || inputs.reporting == true }}
+      skip_report_on_pass: ${{ inputs.skip_report_on_pass != false }}
+      issue_label: ${{ matrix.issue_label }}
+      issue_title: ${{ matrix.issue_title }}
+    secrets: inherit

.github/workflows/ci_pull_request.yml

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+---
+# Runs on every pull request targeting main.
+#
+# Executes lint checks and a single CI run with the default config
+# (no special init_flags). Issue reporting is disabled — that is
+# reserved for the nightly schedule run.
+
+name: CI (Pull Request)
+
+on:
+  pull_request:
+    branches: ['main']
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Setup Rust toolchain
+      uses: actions-rust-lang/setup-rust-toolchain@v1
+      with:
+        components: rustfmt, clippy
+
+    - name: Setup Python tools
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y pipx
+        pipx install black
+        echo "$HOME/.local/bin" >> $GITHUB_PATH
+
+    - name: Run linting (check mode)
+      run: FIX=0 ./scripts/lint.sh
+
+  foc-devnet-test:
+    needs: lint
+    uses: ./.github/workflows/ci_run.yml
+    with:
+      name: default
+      init_flags: ''
+      enable_reporting: false
+    secrets: inherit