feat(agents): add workshop Copilot agent and governance instructions

- add code-quality-workshop-agent.agent.md with lab guidance capabilities
- add code-quality-governance.instructions.md with coverage, complexity, and duplication rules
- brings Code Quality workshop to parity with Accessibility, FinOps, and APM Security workshops

🔧 - Generated by Copilot

Author: emmanuelknafo

.github/agents/code-quality-workshop-agent.agent.md

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+---
+name: Code Quality Workshop Agent
+description: "Helps students navigate labs, debug scanner issues, explain findings, and troubleshoot tool configurations."
+tools:
+  - terminal
+  - file_reader
+---
+
+## Role
+
+You are a code quality workshop assistant helping students work through 9 labs covering MegaLinter, jscpd, Lizard, and per-language coverage tools for multi-language code quality scanning.
+
+## Capabilities
+
+* Guide students through lab exercises step by step
+* Debug MegaLinter, linter, and coverage tool errors
+* Explain SARIF output and code quality findings (duplication, complexity, coverage gaps)
+* Help interpret coverage reports and cyclomatic complexity metrics
+* Assist with GitHub Actions and ADO pipeline workflow troubleshooting
+* Explain remediation strategies for code quality violations
+
+## Context
+
+* Labs are in the `labs/` directory (lab-00-setup.md through lab-08.md)
+* The code-quality-scan-demo-app repository contains 5 demo apps with intentional quality violations
+* Demo apps are built in TypeScript, Python, C#, Java, and Go with 15+ quality violations each
+* The scanner uses a 4-tool architecture: MegaLinter (linters), jscpd (duplication), Lizard (complexity), per-language coverage
+* Two Python SARIF converters: `lizard-to-sarif.py` and `coverage-to-sarif.py`
+* Lab 08 covers Power BI dashboard creation from scan results
+* Read `.github/instructions/code-quality-governance.instructions.md` for governance rules

.github/instructions/code-quality-governance.instructions.md

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+---
+description: "Code quality governance rules, coverage thresholds, complexity limits, and scan conventions for multi-language code analysis."
+applyTo: "**/*.ts,**/*.js,**/*.py,**/*.cs,**/*.java,**/*.go"
+---
+
+# Code Quality Governance Rules
+
+## Coverage Thresholds
+
+Every scanned application must meet the following minimum coverage levels:
+
+| Metric | Threshold | Action |
+|--------|-----------|--------|
+| Line coverage | ≥ 80% | Must fix before release |
+| Branch coverage | ≥ 80% | Must fix before release |
+| Function coverage | ≥ 80% | Must fix before release |
+| New code coverage | ≥ 90% | Warn on PR |
+
+## Complexity Limits
+
+Functions exceeding complexity limits are flagged by the Lizard scanner:
+
+| Metric | Threshold | SARIF Level |
+|--------|-----------|-------------|
+| Cyclomatic complexity (CCN) | > 15 | `error` |
+| Cyclomatic complexity (CCN) | > 10 | `warning` |
+| Function length | > 80 lines | `warning` |
+| Parameter count | > 5 | `note` |
+
+## Duplication Rules
+
+Code duplication is detected by jscpd across all languages:
+
+| Metric | Threshold | Action |
+|--------|-----------|--------|
+| Duplication rate | > 5% | Must reduce before release |
+| Minimum clone tokens | 50 | Detection sensitivity |
+| Cross-file duplication | Any | Flag for refactoring |
+
+## Required Scan Coverage
+
+Every demo application must be scanned for the following categories:
+
+| # | Category | Tool | Rule Examples |
+|---|----------|------|---------------|
+| 1 | Linting | MegaLinter (ESLint, Ruff, golangci-lint, .NET Analyzers, Checkstyle) | Style violations, unused variables, error-prone patterns |
+| 2 | Duplication | jscpd | Copy-paste code blocks across files |
+| 3 | Complexity | Lizard | High cyclomatic complexity, long functions |
+| 4 | Coverage | jest, pytest-cov, Coverlet, JaCoCo, go test | Untested functions, low branch coverage |
+
+## Severity Mapping
+
+Code quality findings map to SARIF severity levels:
+
+| Condition | SARIF Level | Description | Action |
+|-----------|-------------|-------------|--------|
+| Coverage < 50% | `error` | Critical coverage gap | Immediate fix required |
+| Coverage 50–70% | `error` | Significant gap | Fix within current sprint |
+| Coverage 70–80% | `warning` | Below threshold | Address before release |
+| CCN > 15 | `error` | Dangerously complex | Refactor immediately |
+| CCN 10–15 | `warning` | Moderately complex | Simplify in current sprint |
+| Duplication > 10% | `error` | Excessive duplication | Refactor immediately |
+| Duplication 5–10% | `warning` | Moderate duplication | Plan refactoring |
+| Lint violation | `note` | Style or minor issue | Fix opportunistically |
+
+## SARIF Output Conventions
+
+- `automationDetails.id` must be prefixed with `code-quality/coverage/`
+- `partialFingerprints` use hash of `ruleId:file:function`
+- `tool.driver.name` is `code-quality-scanner`
+- Include `properties.tags` with `code-quality` plus category tags