ci: release chain — shared workflows, semver wording, source-only goreleaser, version stamping

.github/workflows/pr.yaml

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+name: Pull Request
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - "**"
+      - "!main"
+
+permissions:
+  contents: read
+  pull-requests: write
+  security-events: write
+
+jobs:
+  pr-checks:
+    uses: lukaszraczylo/shared-actions/.github/workflows/go-pr.yaml@main
+    with:
+      go-version: "1.25.x"
+      coverage-threshold: 75
+    secrets: inherit

.github/workflows/release.yml

@@ -0,0 +1,23 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - "**.go"
+      - "go.mod"
+      - "go.sum"
+  workflow_dispatch:
+
+permissions:
+  id-token: write
+  contents: write
+  packages: write
+
+jobs:
+  release:
+    uses: lukaszraczylo/shared-actions/.github/workflows/go-release.yaml@main
+    with:
+      go-version: "1.25.x"
+    secrets: inherit