* Builds a human-readable label for a shortcut, e.g. "Ctrl+K" / "⌘K". * * @param {boolean} useMeta - true on macOS * @param {string} key * @retur

* Validate if a student can earn the ACTIVE_PARTICIPANT badge * Requirement: Reach Level 5 * * @param {Object} studentData - Student data obj

* Validate if a student can earn the EARLY_BIRD badge * Requirement: Mark attendance before 9:05 AM * * @param {Array} attendanceHistory - Ar

* Validate if a student can earn the PERFECT_WEEK badge * Requirement: Maintain a 5-day consecutive attendance streak * * @param {Object} stu

* Render one PDF page to canvas and OCR it. * @private

* Generate fraud score (0-100) for offline sync

* Calculate legitimate badges based on student data * Uses comprehensive validation to determine correct badges * * @param {Object} studentDa

* Compute a 0–100 risk score: * Lower attendance → higher risk score * Declining trend adds a penalty

* Calculates the difference in calendar days between two dates. * Uses UTC to avoid timezone drift issues. * @param {Date} dateA - The earlier date.

* Decodes potential base64 or hex encoded blocks to inspect for hidden prompt injections.

* Deep merges two objects, prioritizing local changes for specific keys * while merging arrays (like attendance logs) to prevent data loss.