Add READMEs for spark and workiq plugins

plugins/spark/README.md

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+# Spark
+
+Comprehensive guidance for building modern web applications with opinionated defaults for tech stack, design system, and code standards.
+
+## What it does
+
+Spark helps you quickly bootstrap high-quality web applications by providing:
+
+- Pre-vetted technology stack choices with multiple complexity-based variations
+- An opinionated design philosophy and system
+- Step-by-step setup workflows
+- Design and performance optimization guidance
+
+## Skills
+
+### `spark-app-template`
+
+Activated when a user wants to create a new web application, dashboard, or interactive interface. Provides guidance on:
+
+- **Tech stack** — Vite, React 19+, TypeScript, Tailwind CSS v4+, shadcn/ui, TanStack Router & Query
+- **Design system** — Typography pairings, OKLCH color palettes, spatial composition, micro-interactions
+- **Stack variations** — Pre-configured stacks tailored to app complexity (default web app, content showcase, data dashboard, complex application)
+- **Performance** — Core Web Vitals targets, React Compiler setup, optimization checklists
+- **Component patterns** — Common shadcn compositions and usage patterns
+
+## Stack variations
+
+| Stack | Use case |
+| --- | --- |
+| **Default Web App** | General-purpose tools, utilities, simple CRUD, MVPs, prototypes |
+| **Content Showcase** | Marketing sites, portfolios, blogs, documentation |
+| **Data Dashboard** | Analytics dashboards, admin panels, BI tools, monitoring |
+| **Complex Application** | SaaS platforms, enterprise tools, multi-view apps |

plugins/workiq/README.md

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+# WorkIQ
+
+Workplace intelligence plugin that connects AI agents to Microsoft 365 Copilot, providing access to organizational data from Outlook, Teams, SharePoint, OneDrive, and Calendar.
+
+Powered by the [`@microsoft/workiq`](https://github.com/microsoft/work-iq-mcp) MCP server.
+
+> ⚠️ **Public Preview:** Features and APIs may change.
+
+## What it does
+
+WorkIQ grounds AI assistance in real workplace context by querying Microsoft 365 data sources. It enables agents to answer questions about:
+
+| Data type | Example questions |
+| --- | --- |
+| **Emails** | "What did John say about the proposal?" |
+| **Meetings** | "What's on my calendar tomorrow?" |
+| **Documents** | "Find my recent PowerPoint presentations" |
+| **Teams** | "Summarize today's messages in the Engineering channel" |
+| **People** | "Who is working on Project Alpha?" |
+
+## Skills
+
+### `workiq`
+
+Activated when a user asks about workplace context — what someone said, meeting outcomes, document locations, team priorities, or organizational knowledge. Uses the `ask_work_iq` MCP tool to query Microsoft 365 Copilot with natural language questions.
+
+## MCP server
+
+WorkIQ includes an MCP server configuration (`.mcp.json`) that runs the [`@microsoft/workiq`](https://www.npmjs.com/package/@microsoft/workiq) package. Authentication is automatic using the connected user's existing Microsoft 365 credentials.
+
+## Prerequisites
+
+- **Node.js 18+** — [Download from nodejs.org](https://nodejs.org/)
+- **Microsoft 365 account** with Copilot access
+
+## Admin consent
+
+To access Microsoft 365 tenant data, the WorkIQ MCP server needs permissions that require administrative rights on the tenant. On first access, a consent dialog appears. If you are not an administrator, contact your tenant administrator to grant access.
+
+For more information, see Microsoft's [User and Admin Consent Overview](https://learn.microsoft.com/en-us/entra/identity/enterprise-apps/user-admin-consent-overview).