Recursion-clicker

[mrbdahlem]

• Student view: Sierpinski triangle exploration
• Manager view: themed dashboard with map/leaderboard tabs, stage controls
• Server: fractal data structure with ternary heap indexing (FractalStore)
• Styled with custom CSS theme matching recursive exploration concept

[Copilot]

Pull request overview

This PR introduces a new collaborative educational activity called "Triangulon Invasion" that teaches recursive concepts through interactive Sierpinski triangle exploration. The activity features a student interface for exploring fractal subdivisions and a manager dashboard for controlling stages and tracking leaderboard progress.

• Implements a complete activity with student and manager views using WebSocket-based real-time synchronization
• Adds CSRF protection to WebSocket connections in the core router
• Creates a custom fractal data structure using ternary heap indexing for efficient triangle navigation
• Applies a themed CSS design matching the recursive exploration concept

Reviewed changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 15 comments.

Show a summary per file

File	Description
server/core/wsRouter.js	Adds Origin header validation for CSRF protection on WebSocket connections
server/activities/activityRegistry.test.js	Registers "triangulon-invasion" in expected activities list
client/src/activities/index.test.js	Registers "triangulon-invasion" in client-side activity list
activities/triangulon-invasion/server/routes.js	Implements WebSocket and HTTP endpoints for session management, stage control, and event broadcasting
activities/triangulon-invasion/server/fractalStore.js	Provides fractal data structure with ternary heap indexing for triangle hierarchy
activities/triangulon-invasion/client/student/triangulon.css	Defines custom theme with gradient backgrounds, grid overlays, and styled UI components
activities/triangulon-invasion/client/student/TriangleNav.jsx	Renders interactive SVG triangle navigation interface with geometric calculations
activities/triangulon-invasion/client/student/Student.jsx	Creates student view with WebSocket connection, triangle workspace, and mini-map
activities/triangulon-invasion/client/manager/Manager.jsx	Provides instructor dashboard with stage controls, map/leaderboard tabs, and event monitoring
activities/triangulon-invasion/client/index.jsx	Exports activity configuration with manager and student components
activities/triangulon-invasion/activity.config.js	Configures activity metadata, client/server entry points, and collaborative mode
package-lock.json	Removes "peer" flags from various dependencies to resolve package resolution

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