docs(mirror): prep for github.com/recklessop/ai-workflow-course public mirror

- README: drop blog/ and handoff.md from the layout (won't be on the mirror),
  repoint the wiki URL to the GitHub wiki, refresh the Status line with the
  skip-friendly lab note.
- Module 1 download URL: point at the github.com/recklessop mirror so the
  public copy's "Get the course materials" step resolves.
- the-workflow-syllabus.md: reflect the AI-drives-git reframe (M1-3 by hand;
  M4 pivot; calculator analogy; learner directs+verifies, doesn't type git),
  Claude Code as the concrete worked example (model-agnostic in principle),
  Module 6 rescoped to "Branches: Sandboxes for AI Experiments" (M3 first-teaches
  branches; M6 doesn't re-teach), lesson=theory rule, the skip-friendly lab
  format, and no-slop voice. All 27 modules + capstone preserved; nothing
  reordered. Em-dash count: 0.
- .github/workflows/ci.yml: fix the hardcoded owner to `recklessop`.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TfzV5QvtPDz8LJS3Pu5VLT

README.md

@@ -18,7 +18,7 @@ built on a branch and merged through review, the same motion the modules teach.
 
 ## Read it as a book
 
-The lessons render into the **[Wiki](https://git.jpaul.io/justin/ai-workflow-course/wiki)** as a
+The lessons render into the **[Wiki](https://github.com/recklessop/ai-workflow-course/wiki)** as a
 navigable textbook (unit-by-unit sidebar, one page per module, prev/next links). The wiki is
 generated from `modules/` and kept in sync automatically; it's build output, so read it there but
 **edit the lessons here in `modules/`**. See [`tools/`](tools/) for the generator and the sync
@@ -92,7 +92,6 @@ ai-workflow-course/
   README.md                 # this file
   AGENTS.md                 # committed AI instructions; dogfoods Module 5 (vendor-neutral name)
   the-workflow-syllabus.md  # the full course plan (source of truth for structure)
-  handoff.md                # build-context notes for the authoring sessions
   _TEMPLATE.md              # the shape every module follows
   modules/
     01-the-copy-paste-problem/
@@ -112,5 +111,6 @@ ai-workflow-course/
 ## Status
 
 All 27 modules and the capstone are written and reviewed. The lessons render to the
-[Wiki](https://git.jpaul.io/justin/ai-workflow-course/wiki) as a textbook, kept in sync from
-`modules/` by CI. Blog drafts for jpaul.me live under [`blog/`](blog/).
+[Wiki](https://github.com/recklessop/ai-workflow-course/wiki) as a textbook, kept in sync from
+`modules/` by CI. Each lab is skip-friendly: copy that module's `lab/start/` snapshot into a
+fresh `tasks-app`, commit, and run that lab without doing the earlier ones.