v6.3.0 — Curriculum Adapters, Exam Countdown & Backlog Recovery

Mission PlusTwo v6.3.0

Highlights

• Curriculum Adapter Architecture (\src/adapters/): Standardized modular adapter interfaces for multi-board curriculum scheduling. Includes official \KeralaDHSEAdapter\ (SCERT) and \CBSEClass12Adapter\ (NCERT rationalized science stream).
• Interactive Acquisition Tools:
  • /pages/exam-countdown.html: Live countdown timer to Kerala DHSE board exams, practicals, and model exams with real-time daily study load feasibility analysis.
  • /pages/backlog-recovery-planner.html: Evidence-based 70/30 interleaved catch-up schedule generator for Class 12 students.
• Product-Led Offline Growth: Zero-dependency offline vector QR code generator (\src/utils/qr.js) integrated into printable full timetable view for classroom and study desk wall hanging.
• Issue Triage & Resolution: Closed Issue #3 with comprehensive practical lab exam revision guidance on /pages/plus-two-timetable.html.
• Rigorous Verification: 53 automated Vitest unit tests (5 test suites) and 551 legacy invariant checks passing with zero errors. Deployed live to production at https://mission-plustwo.web.app/.