fix(M7-27+capstone): apply AI-drives-git reframe, lesson=theory, de-slop course-wide

Phase 2 sweep — all modules are post-pivot, so the learner directs the AI agent
(Claude Code as the worked example) to do the git/setup work and verifies, instead
of typing commands by hand; no re-teaching basics. Lesson sections are theory with
example output; all execution lives in the labs. De-slopped ("prose" etc. gone
course-wide, em-dash density thinned). /path/to placeholders -> ~/ai-workflow-course.

Every deliberate teaching device verified intact: M10 ai-change.patch trap,
M12 bad-clear-snippet, M13/M27 planted pending_count bug, M15 secret+typosquat+MD5,
M18 BREAK=1, M21 absent-.gitignore, M22 poisoned skill, M24 no-op patch, M25 --simulate.
Labs compile/parse (py/sh/yaml/json); no junk.

Closes #83
Closes #86
Closes #89

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

modules/26-orchestrating-multiple-agents/lab/agent-prompts/agent-42-count.md

@@ -19,4 +19,5 @@ You are working in this worktree only. Do not touch any other folder.
 - No other files change. (`README.md`, `CHANGELOG.md`, and `tasks.py` are owned by other agents —
   stay out of them.)
 
-When done, stop. The human commits, pushes, and opens the PR.
+When done, commit your work on this branch with a message referencing #42, then push the branch. Stop
+there; the human opens and reviews the PR.

modules/26-orchestrating-multiple-agents/lab/agent-prompts/agent-43-docs.md

@@ -23,4 +23,5 @@ You are working in this worktree only. Do not touch any other folder, and do not
 - `CHANGELOG.md` exists and is valid markdown.
 - No code files change.
 
-When done, stop. The human commits, pushes, and opens the PR.
+When done, commit your work on this branch with a message referencing #43, then push the branch. Stop
+there; the human opens and reviews the PR.

modules/26-orchestrating-multiple-agents/lab/agent-prompts/agent-44-clear.md

@@ -20,5 +20,6 @@ You are working in this worktree only. Do not touch any other folder.
 - `python cli.py clear` removes all tasks and prints `cleared`.
 - `python cli.py list` afterward shows `(no tasks yet)`.
 
-When done, stop. The human commits, pushes, and opens the PR — and should expect a conflict against
-`feature/42-count` at merge.
+When done, commit your work on this branch with a message referencing #44, then push the branch. Stop
+there; the human opens and reviews the PR, and should expect a conflict against `feature/42-count` at
+merge.