- Change lesson 0 title from "Python survival kit" to "Lesson 0: Python survival kit" - Change lesson 2 title from "Unit 2: Read and Inspect" to "Lesson 2: Read and Inspect" (ensures consistent "Lesson N:" convention across all lessons) - Trim README file tree to remove future lessons (03-06) and demos (03-06) that don't exist yet; keep exercises/solutions 03-06 as they exist on disk - Later phases will add their lessons and demos as they are implemented This prevents broken links for users cloning at this commit (all listed files now exist). This establishes the title convention early to prevent 6-way drift across later phases. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>