Added fabric-medallion-architecture skill

docs/README.skills.md

@@ -138,6 +138,8 @@ See [CONTRIBUTING.md](../CONTRIBUTING.md#adding-skills) for guidelines on how to
 | [exam-ready](../skills/exam-ready/SKILL.md) | Activate this skill when a student provides study material (PDF or pasted notes) and a syllabus, and wants to prepare for an exam. Extracts key definitions, points, keywords, diagrams, exam-ready sentences, and practice questions strictly from the provided material. | None |
 | [excalidraw-diagram-generator](../skills/excalidraw-diagram-generator/SKILL.md) | Generate Excalidraw diagrams from natural language descriptions. Use when asked to "create a diagram", "make a flowchart", "visualize a process", "draw a system architecture", "create a mind map", or "generate an Excalidraw file". Supports flowcharts, relationship diagrams, mind maps, and system architecture diagrams. Outputs .excalidraw JSON files that can be opened directly in Excalidraw. | `references/element-types.md`<br />`references/excalidraw-schema.md`<br />`scripts/.gitignore`<br />`scripts/README.md`<br />`scripts/add-arrow.py`<br />`scripts/add-icon-to-diagram.py`<br />`scripts/split-excalidraw-library.py`<br />`templates` |
 | [fabric-lakehouse](../skills/fabric-lakehouse/SKILL.md) | Use this skill to get context about Fabric Lakehouse and its features for software systems and AI-powered functions. It offers descriptions of Lakehouse data components, organization with schemas and shortcuts, access control, and code examples. This skill supports users in designing, building, and optimizing Lakehouse solutions using best practices. | `references/getdata.md`<br />`references/pyspark.md` |
+| [fabric-medallion-architecture](../skills/fabric-medallion-architecture/SKILL.md) | Opinionated medallion architecture guidance for Microsoft Fabric: landing, bronze, silver (standardized → canonical → modelled), and gold. Covers layer boundaries, Lakehouse vs Warehouse decisions, framework system columns, contract validation, SCD1/SCD2 placement, Materialized Lake Views, gold table naming patterns, and gold consumption in large orgs via OneLake shortcuts. WHEN: "where does this transformation belong", "should this be bronze or silver", "Fabric medallion layers", "silver SCD2 pattern", "gold table naming", "Lakehouse or Warehouse for gold", "canonical vs conformed silver", "OneLake shortcuts for gold consumption", "MLV vs procedural silver", "should I use a landing zone", "contract validation for landed files" | None |
+| [fabric-optimizations](../skills/fabric-optimizations/SKILL.md) | End-to-end Microsoft Fabric performance and cost optimization guidance across Delta layout (VORDER, ZORDER, OPTIMIZE, VACUUM), Spark and workspace settings, pipelines, SQL serving, and observability. Use when reducing runtime, latency, or spend across Fabric data workloads. | None |
 | [fedora-linux-triage](../skills/fedora-linux-triage/SKILL.md) | Triage and resolve Fedora issues with dnf, systemd, and SELinux-aware guidance. | None |
 | [finalize-agent-prompt](../skills/finalize-agent-prompt/SKILL.md) | Finalize prompt file using the role of an AI agent to polish the prompt for the end user. | None |
 | [finnish-humanizer](../skills/finnish-humanizer/SKILL.md) | Detect and remove AI-generated markers from Finnish text, making it sound like a native Finnish speaker wrote it. Use when asked to "humanize", "naturalize", or "remove AI feel" from Finnish text, or when editing .md/.txt files containing Finnish content. Identifies 26 patterns (12 Finnish-specific + 14 universal) and 4 style markers. | `references/patterns.md` |