Phase 1 is confirmed complete. Proceed directly to Phase 2: Lecture-wise JSON plans. Create `beamer/lecture-plans/00-course-plan-index.json` and one `lecture-NN.json` per lecture (total 45). Use `../../../../11-ec/sem-3/DI03011011/beamer/lecture-plans/` as the exact schema and structure reference. Ensure topics are split matching each unit's hours exactly. Report back here when Phase 2 is complete so I can review.