ci(release): add release-please and plugin CI workflows

.github/workflows/main.yml

@@ -0,0 +1,35 @@
+name: Main
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - name: Install Claude Code
+        run: |
+          curl -fsSL https://claude.ai/install.sh | bash
+          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+      - run: claude --version
+      - name: Validate manifests
+        run: |
+          claude plugin validate --strict .
+          for dir in plugins/*/; do
+            claude plugin validate --strict "$dir"
+          done
+      - name: Test
+        run: |
+          for dir in plugins/*/; do
+            claude plugin test "$dir"
+          done

.github/workflows/release.yml

@@ -0,0 +1,20 @@
+name: Release
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: googleapis/release-please-action@v4
+        id: release
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          config-file: release-please-config.json
+          manifest-file: .release-please-manifest.json

.release-please-manifest.json

@@ -0,0 +1,3 @@
+{
+  ".": "0.1.0"
+}

README.md

@@ -34,6 +34,12 @@ claude --plugin-dir plugins/shelltime-statusline
 
 The engine writes the API types beside a loaded mod in `.claude-plugin/types/`, along with a `tsconfig.json`, so `tsc -p plugins/shelltime-statusline` type-checks it.
 
+## Release
+
+Commits follow [Conventional Commits](https://www.conventionalcommits.org). On `main`, [release-please](https://github.com/googleapis/release-please) keeps a release PR open. Merging it tags `vX.Y.Z`, updates `CHANGELOG.md` and bumps the version in each mod's `plugin.json`, which is what tells installed copies to update.
+
+When you add a mod, add its `.claude-plugin/plugin.json` to `extra-files` in `release-please-config.json`.
+
 ## License
 
 MIT

release-please-config.json

@@ -0,0 +1,30 @@
+{
+  "include-component-in-tag": false,
+  "packages": {
+    ".": {
+      "release-type": "simple",
+      "versioning": "always-bump-patch",
+      "extra-files": [
+        {
+          "type": "json",
+          "path": "plugins/shelltime-statusline/.claude-plugin/plugin.json",
+          "jsonpath": "$.version"
+        }
+      ],
+      "changelog-sections": [
+        { "type": "feat", "section": "Features" },
+        { "type": "fix", "section": "Bug Fixes" },
+        { "type": "perf", "section": "Performance Improvements" },
+        { "type": "refactor", "section": "Code Refactoring" },
+        { "type": "docs", "section": "Documentation" },
+        { "type": "chore", "section": "Miscellaneous Chores" },
+        { "type": "build", "section": "Build System" },
+        { "type": "ci", "section": "Continuous Integration" },
+        { "type": "test", "section": "Tests" },
+        { "type": "style", "section": "Styles" },
+        { "type": "revert", "section": "Reverts" }
+      ]
+    }
+  },
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json"
+}