Add OSOP README for code review pipeline example

Adds documentation explaining OSOP format and how it maps to Semantic Kernel concepts.

Author: Archie0125

python/samples/concepts/osop/README.md

@@ -0,0 +1,45 @@
+# OSOP Workflow Examples for Semantic Kernel
+
+[OSOP](https://github.com/osopcloud/osop-spec) (Open Standard for Orchestration Protocols) is a portable YAML format for describing AI workflows — think OpenAPI, but for agent orchestration.
+
+## What's Here
+
+| File | Description |
+|------|-------------|
+| `code-review-pipeline.osop.yaml` | Automated PR review: fetch diff, parallel analysis (complexity + security + tests), generate review, post comments |
+
+## Why OSOP?
+
+Semantic Kernel provides powerful AI orchestration with plugins, planners, and agents. OSOP provides a **framework-agnostic way to describe** those orchestration patterns so they can be:
+
+- **Documented** — readable YAML that non-developers can understand
+- **Validated** — check workflow structure before execution
+- **Ported** — same workflow definition works across Semantic Kernel, LangChain, AutoGen, etc.
+- **Visualized** — render the workflow as a graph in the [OSOP Editor](https://github.com/osopcloud/osop-editor)
+
+## Quick Start
+
+```bash
+# Validate the workflow
+pip install osop
+osop validate code-review-pipeline.osop.yaml
+
+# Or just read the YAML — it's self-documenting
+cat code-review-pipeline.osop.yaml
+```
+
+## How It Maps to Semantic Kernel
+
+| OSOP Concept | Semantic Kernel Equivalent |
+|---|---|
+| `node` with `type: agent` | `ChatCompletionAgent` / `OpenAIAssistantAgent` |
+| `node` with `type: api` | Native function / Plugin |
+| `edge` with `mode: parallel` | Parallel plugin execution |
+| `edge` with `mode: conditional` | `KernelFunction` with conditional logic |
+| `config.plugins` | Semantic Kernel plugins |
+
+## Learn More
+
+- [OSOP Spec](https://github.com/osopcloud/osop-spec) — full specification
+- [OSOP Examples](https://github.com/osopcloud/osop-examples) — 30+ workflow templates
+- [OSOP Editor](https://github.com/osopcloud/osop-editor) — visual workflow editor