feat(docs): Advent of CALM v1 - first 14 days of learning module

[rocketstack-matt]

Description

Advent of CALM is a 24 day learning module.

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📚 Documentation update
• 🎨 Code style/formatting changes
• ♻️ Refactoring (no functional changes)
• ⚡ Performance improvements
• ✅ Test additions or updates
• 🔧 Chore (maintenance, dependencies, CI, etc.)

Affected Components

• CLI (cli/)
• Shared (shared/)
• CALM Widgets (calm-widgets/)
• CALM Hub (calm-hub/)
• CALM Hub UI (calm-hub-ui/)
• Documentation (docs/)
• VS Code Extension (calm-plugins/vscode/)
• Dependencies
• CI/CD

Commit Message Format ✅

Testing

• I have tested my changes locally
• I have added/updated unit tests
• All existing tests pass

Checklist

• My commits follow the conventional commit format
• I have updated documentation if necessary
• I have added tests for my changes (if applicable)
• My changes follow the project's coding standards

[Copilot]

Pull request overview

This PR introduces "Advent of CALM" - a comprehensive 24-day progressive learning module for the Common Architecture Language Model (CALM). The first 14 days of content are included, covering fundamentals from CLI installation through documentation generation and AI-assisted architecture improvements. The module is delivered as an Astro-based website with an interactive calendar that unlocks content daily throughout December.

Key Changes:

• Complete Astro website infrastructure with calendar-based navigation
• 14 structured learning modules (days 1-14) covering CALM fundamentals, patterns, controls, flows, ADRs, and documentation generation
• CI/CD workflow for automatic deployment to S3
• Interactive calendar component with unlock mechanism tied to December dates

Reviewed changes

Copilot reviewed 27 out of 31 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
advent-of-calm/website/src/utils/calendar.ts	Calendar utility with day unlock logic and title mappings
advent-of-calm/website/src/pages/index.astro	Home page with markdown parser and calendar display
advent-of-calm/website/src/pages/day/[day].astro	Dynamic day content pages with navigation
advent-of-calm/website/src/layouts/Layout.astro	Main layout with header and footer
advent-of-calm/website/src/components/Calendar.astro	Interactive calendar grid component
advent-of-calm/day-*.md	Learning content for days 1-14
.github/workflows/build-and-sync-advent.yml	CI/CD workflow for building and deploying website
advent-of-calm/website/astro.config.mjs	Astro configuration
advent-of-calm/website/package.json	Dependencies and build scripts
advent-of-calm/website/tsconfig.json	TypeScript configuration

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[markscott-ms]

I've reviewed days 1-9 (resulting in CALM Schema 1.1 and a couple of CLI bugfixes), and will get cracking on days 10+