v2026.12

Verified against Claude Code v2.1.308 (stable).

Every lesson and capstone refined for Claude Code v2.1.308, and every other stamped page verified at that version.

Changed

• The baseline moves from Claude Code v2.1.292 to v2.1.308, because v2.1.302 changed the permission mode a claude -p run starts in when nothing sets one (CHANGELOG). Every stamped page is re-verified at v2.1.308.
• Every core lesson's Your turn opens with a mission line, every capstone carries one, and each Your turn asks for a new decision rather than a repeat of the Worked example. Facts that changed since v2.1.292 are brought up to date, and steps a learner would skim are cut. Each lesson and capstone was dry-run at v2.1.308 and fixed from what the runs showed.
• Beginner: lesson 1 teaches stopping a turn with Esc and @ file references; lesson 2 asks when a plan is worth making and commits the reviewed change instead of stashing it; lesson 3 teaches what a precise request holds; lesson 4 recovers with Esc and a rewind, and moves /branch and summarizing to Go further; lesson 5 ends by giving one of your own repositories a CLAUDE.md, which Intermediate lesson 2 starts from.
• Intermediate: the tdd skill stops at a reviewed diff; the hooks lesson's guard fails closed with "onFailure": "block" and its Your turn adds a Stop-hook test gate; the permissions lesson teaches ask rules; the plugins lesson drops the commit-commands trial; the capstone states problems and accepts any sound mechanism. Setting up .practice/ in your own repository moves to the Intermediate index.
• Advanced: /batch joins the orchestration patterns; /goal is the dynamic workflows lesson's verification gate, and the /loop Elective becomes /loop and cloud scheduled tasks; a headless reviewer runs only the tools it lists; the GitHub Actions lesson uses the job's own token and pins the action to a release that installs v2.1.308; the capstone runs one committed review definition both locally and in CI.
• Commands by level credits each command to the lesson that uses it and adds /batch; the hook line in the Intermediate Exit and the Advanced readiness list says the hook fails closed; Electives, topic and reference pages follow the refined lessons and the current docs.
• The tdd skill and the hook script that Intermediate lessons 1 and 5 download from examples follow their lessons.