feat: complete SHD MCP plugin workflows and widget

plugins/shd-mcp-plugin/widgets/active-projects/v1/UPSTREAM.md

@@ -0,0 +1,12 @@
+# SHD active-projects widget provenance
+
+This is an SHD-authored MCP Apps resource. It is not copied from an external
+widget bundle and has no OpenAI upstream dependency.
+
+- Resource URI: `ui://shd/active-projects/v1.html`
+- Media type: `text/html;profile=mcp-app`
+- Source: `plugins/shd-mcp-plugin/widgets/active-projects/v1/index.html`
+- Backend loader: `SHD_MCP_WIDGET_ROOT` or the repository path documented in
+  `scripts/mcp/mcp/resources/active-projects-widget.mjs`
+- Integrity: verify `index.html` against `SHA256SUMS`.
+- License: repository root `LICENSE`.