De-slop: remove every em-dash + banned words across all modules + capstone (#94)

Co-authored-by: claude <claude@jpaul.io>
Co-committed-by: claude <claude@jpaul.io>

modules/26-orchestrating-multiple-agents/lab/cleanup.sh

@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
-# Module 26 lab — tear down the fleet after the work has merged.
+# Module 26 lab: tear down the fleet after the work has merged.
 #
 # Removes each worktree and prunes stale records. Refuses to remove a worktree with uncommitted
-# work (Git's safety) — commit or merge first. Run from inside your tasks-app repo.
+# work (Git's safety); commit or merge first. Run from inside your tasks-app repo.
 
 set -euo pipefail
 
@@ -17,7 +17,7 @@ git rev-parse --git-dir >/dev/null 2>&1 || { echo "not a git repo" >&2; exit 1;
 for path in "${FLEET[@]}"; do
   if [ -d "$path" ]; then
     echo "remove: $path"
-    git worktree remove "$path"   # fails if dirty — that's intentional; commit first
+    git worktree remove "$path"   # fails if dirty; that's intentional, commit first
   fi
 done