feat(KLEF): Set up GitHub Actions for various code quality checks

[isaacwallace123]

Pull Request

Summary

• Replaces the old org-policies.yaml reusable workflow (which pointed to kleffio/.github) with standalone inline CI checks
• Adds docs-specific checks for MDX linting and spellchecking

Related Issues

No related issue — part of org-wide CI migration away from reusable workflows in .github.

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Changes

What's Included

• Removed org-policies.yaml (depended on kleffio/.github reusable workflows)
• Added actionlint.yml — lints GitHub Actions workflow files
• Added yaml-lint.yml — lints all YAML files
• Added typecheck.yml — runs tsc --noEmit to catch type errors
• Added lint.yml — runs next lint (ESLint)
• Added pr-title.yml — enforces semantic PR title format
• Added label-policy.yml — label sync → auto-label → require-label (chained with needs)
• Added mdx-lint.yml — remark-based linting for MDX structure and headings
• Added spellcheck.yml — cspell spellcheck across all .mdx and .md files
• Added .github/cspell.json — cspell config with project-specific words whitelisted

What's Not Included

• No changes to source code or MDX content
• No changes to package.json or any dependencies

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Testing

How Was This Tested?

• Verified workflows trigger correctly on push and pull_request events
• Confirmed label-policy job ordering (label-sync → auto-label → require-label) via needs

Test Coverage

• Unit tests added or updated
• Integration tests added or updated
• Manually tested end-to-end

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Breaking Changes

Does this PR introduce breaking changes?

• Yes
• No

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Security Considerations

• This PR affects authentication or authorization logic
• This PR touches secrets, tokens, or environment variables
• This PR affects infrastructure, deployment pipelines, or network configuration

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Documentation

Does this PR require documentation updates?

• Yes
• No

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UI/UX (If Applicable)

N/A

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Pre-Merge Checklist

• PR title follows semantic format (feat:, fix:, chore:, docs:, refactor:, test:)
• All CI checks passing
• Code follows project style guidelines
• No debug logs or commented-out code left in
• Dependencies reviewed (no unnecessary additions)
• No sensitive information included

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Reviewer Notes

The label-policy.yml workflow runs label-sync on both push and PR events so labels are guaranteed to exist before auto-label tries to apply them. This is intentional.

The cspell.json whitelist will likely need additions over time as more docs are written — contributors should add project-specific terms there rather than disabling the check.

[Copilot]

Pull request overview

This PR migrates the repo away from the shared org-policies.yaml reusable workflow and replaces it with explicit, repo-local GitHub Actions workflows for code quality and docs checks.

Changes:

• Replaces the removed org-wide reusable workflow with standalone CI workflows (lint, typecheck, YAML lint, actionlint).
• Adds docs-focused quality gates (MDX linting via remark, spellchecking via cspell).
• Adds PR/process enforcement workflows (semantic PR title check and label policy enforcement).

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
.github/workflows/org-policies.yaml	Removes the legacy reusable workflow dependency.
.github/workflows/actionlint.yml	Adds workflow linting for GitHub Actions files.
.github/workflows/yaml-lint.yml	Adds yamllint across the repository.
.github/workflows/typecheck.yml	Adds TypeScript type checking in CI.
.github/workflows/lint.yml	Adds Next.js/ESLint linting in CI.
.github/workflows/pr-title.yml	Enforces semantic PR title formatting.
.github/workflows/label-policy.yml	Adds label sync + auto-label + required-label enforcement.
.github/workflows/mdx-lint.yml	Adds remark-based MDX/Markdown linting.
.github/workflows/spellcheck.yml	Adds cspell checks for .md/.mdx.
.github/cspell.json	Adds cspell configuration and project word allowlist.

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