fix(release): track all plugin files in core releases, not just packages/core

Change the core package path from packages/core to root (.) so that
commits to hooks/, workflows/, and .claude-plugin/ trigger releases.
Previously only packages/core/ changes created release PRs, causing
plugin-level fixes to be silently excluded.

- Use release-type: simple (no root package.json needed)
- Add exclude-paths for packages/mcp-server to avoid overlap
- Keep changelog at packages/core/CHANGELOG.md
- Bump both packages/core/package.json and plugin.json via extra-files
- Update workflow output keys from packages/core-- to .--

Author: costajohnt

.github/workflows/release-please.yml

@@ -14,8 +14,8 @@ jobs:
     name: Release Please
     runs-on: ubuntu-latest
     outputs:
-      core-released: ${{ steps.release.outputs['packages/core--release_created'] }}
-      core-tag: ${{ steps.release.outputs['packages/core--tag_name'] }}
+      core-released: ${{ steps.release.outputs['.--release_created'] }}
+      core-tag: ${{ steps.release.outputs['.--tag_name'] }}
       mcp-released: ${{ steps.release.outputs['packages/mcp-server--release_created'] }}
       mcp-tag: ${{ steps.release.outputs['packages/mcp-server--tag_name'] }}
     steps:

.release-please-manifest.json

@@ -1,4 +1,4 @@
 {
-  "packages/core": "0.44.3",
+  ".": "0.44.3",
   "packages/mcp-server": "1.0.1"
 }

release-please-config.json

@@ -1,17 +1,23 @@
 {
   "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
   "packages": {
-    "packages/core": {
-      "release-type": "node",
+    ".": {
+      "release-type": "simple",
       "component": "core",
       "bump-minor-pre-major": true,
       "draft": false,
       "prerelease": false,
-      "additional-paths": ["hooks", "workflows", ".claude-plugin"],
+      "changelog-path": "packages/core/CHANGELOG.md",
+      "exclude-paths": ["packages/mcp-server"],
       "extra-files": [
         {
           "type": "json",
-          "path": "/.claude-plugin/plugin.json",
+          "path": "packages/core/package.json",
+          "jsonpath": "$.version"
+        },
+        {
+          "type": "json",
+          "path": ".claude-plugin/plugin.json",
           "jsonpath": "$.version"
         }
       ]