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/24-assistive-agents/lab/reviewer.py

@@ -1,15 +1,15 @@
-"""Assistive AI reviewer — local simulation of a PR-reviewer bot.
+"""Assistive AI reviewer: local simulation of a PR-reviewer bot.
 
 This stands in for a forge-native reviewer (an app/bot triggered when a PR opens, running on a
 runner from Module 19) without needing any hosted account. It does the two deterministic halves of
-the job and leaves the one judgment call — what actually happens to the PR — to you.
+the job and leaves the one judgment call (what actually happens to the PR) to you.
 
     python reviewer.py prompt              # assemble the prompt: rubric + diff, for the agent to review
     python reviewer.py apply ai-review.sample.json   # ingest the agent's JSON, render it, gate it
 
 The point of this module: the agent produces comments and a recommendation. It never approves,
 never requests-changes-as-a-gate, never merges. The `apply` step ends at a HUMAN DECISION, every
-time. Stdlib only — no pip install.
+time. Stdlib only, no pip install.
 """
 
 import argparse
@@ -68,7 +68,7 @@ def cmd_apply(args: argparse.Namespace) -> int:
     comments = review.get("comments", [])
 
     print("=" * 70)
-    print("AI REVIEWER — first pass (advisory only)")
+    print("AI REVIEWER: first pass (advisory only)")
     print("=" * 70)
     print(f"\nSummary: {summary}\n")