chore(release): take release.yml and docs/releasing.md from master as they are

This branch starts from feat/desktop-app (#763), which predates master's MCP
registry job and the release-notes body in release.yml and their pages in
docs/releasing.md. Both files are master's text verbatim here, so the Mac app
commit after this one changes them by additions only, and a rebase onto master
drops this commit as empty.

release.yml now names .github/workflows/publish-mcp.yml and
scripts/generate-release-notes.mjs, which exist on master but not on this
branch. The Release workflow runs only on pushes to master, so that matters
nowhere else.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.github/workflows/release.yml

@@ -14,6 +14,8 @@ jobs:
     permissions:
       contents: write
       pull-requests: write
+    outputs:
+      published: ${{ steps.changesets.outputs.published }}
     steps:
       - name: Checkout repo
         uses: actions/checkout@v6
@@ -60,15 +62,40 @@ jobs:
           # 1.9.4 lost it to xterm-zerolag-input@0.1.7 by two seconds. All package
           # releases already exist by the time this step runs, so setting it here
           # is deterministic.
+          #
+          # The title and body are the page people land on from the update toast.
+          # changesets copied the body from CHANGELOG.md as one long bullet, so it is
+          # reshaped here (scripts/lib/release-notes.mjs). npm has already published by
+          # now, so a failure in that must not stop the retag below: without the body
+          # field the release keeps the text changesets wrote.
           RELEASE_ID=$(gh release view "$OLD_TAG" --json databaseId -q .databaseId 2>/dev/null || true)
           if [ -n "$RELEASE_ID" ]; then
+            NOTES_FILE="$RUNNER_TEMP/release-notes.md"
+            BODY_ARGS=()
+            if node scripts/generate-release-notes.mjs "$VERSION" > "$NOTES_FILE"; then
+              BODY_ARGS=(-F "body=@$NOTES_FILE")
+            else
+              echo "::warning::Keeping the changesets release notes for $VERSION"
+            fi
             gh api -X PATCH "repos/${{ github.repository }}/releases/${RELEASE_ID}" \
               -f tag_name="$NEW_TAG" \
-              -f name="$NEW_TAG" \
-              -f make_latest=true
+              -f name="Codeman ${VERSION}" \
+              -f make_latest=true \
+              "${BODY_ARGS[@]}"
           fi
 
           # Retag
           git tag "$NEW_TAG" "$OLD_TAG" 2>/dev/null || true
           git tag -d "$OLD_TAG" 2>/dev/null || true
           git push origin "$NEW_TAG" ":refs/tags/$OLD_TAG" 2>/dev/null || true
+
+  # Its own job: this one alone holds id-token, and a registry failure shows as itself
+  # without touching the npm publish or the tag above.
+  mcp-registry:
+    name: MCP registry
+    needs: release
+    if: needs.release.outputs.published == 'true'
+    permissions:
+      contents: read
+      id-token: write
+    uses: ./.github/workflows/publish-mcp.yml