style(no-slop): remove every em-dash + banned words across all modules + capstone

Apply the no-ai-slop standard (now binding in AGENTS.md): the em-dash character is
banned outright (restructured, not blind-replaced), plus the banned word/phrase
list (delve, leverage, robust, seamless, truly, unlock, etc.). 0 em-dashes remain
in modules + capstone; the only "robust" left is the planted M10 ai-change.patch
trap. Module H1 titles use a colon separator.

All deliberate teaching devices preserved; labs compile/parse (py/sh/yaml/json);
no junk. AGENTS.md updated with the hard no-slop rules.

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

modules/14-continuous-integration/lab/ci-starter.yml

@@ -1,10 +1,10 @@
-# Starter CI workflow for the tasks-app — forge-native, GitHub Actions flavor.
+# Starter CI workflow for the tasks-app: forge-native, GitHub Actions flavor.
 #
 # Where this file goes: GitHub Actions reads workflow files from the .github/workflows/ directory
 # at the root of your repo. Copy this file to .github/workflows/ci.yml (the name "ci.yml" is yours
 # to choose; the .github/workflows/ path is not). Commit it, push, and the forge runs it.
 #
-# The same three checks (lint, then test) exist on every forge — only the YAML shape differs. See
+# The same three checks (lint, then test) exist on every forge; only the YAML shape differs. See
 # gitlab-ci-starter.yml in this folder for the GitLab equivalent of this exact pipeline.
 
 name: CI
@@ -18,7 +18,7 @@ on:
 jobs:
   check:
     # The runner: a fresh, throwaway Linux machine the forge spins up for this job. "Works on my
-    # machine" can't hide here — this machine has nothing of yours on it. (More on runners in
+    # machine" can't hide here; this machine has nothing of yours on it. (More on runners in
     # Module 19, including running your own.)
     runs-on: ubuntu-latest
 
@@ -34,7 +34,7 @@ jobs:
           python-version: "3.12"
 
       # Step 3: install the linter (ruff), the new tool this module adds. The test runner is
-      # Python's standard-library unittest from Module 13 — nothing to install for it.
+      # Python's standard-library unittest from Module 13; nothing to install for it.
       - name: Install tools
         run: pip install ruff