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/03-version-control-for-words/lab/adr-template.md

@@ -1,8 +1,8 @@
 <!--
-  ADR template — Architecture Decision Record (lightweight).
+  ADR template: Architecture Decision Record (lightweight).
 
   An ADR captures ONE decision so the reasoning survives the meeting. Copy this file into your repo
-  (e.g. docs/adr/0001-some-decision.md), number it, and fill in the sections. Keep it short — an ADR
+  (e.g. docs/adr/0001-some-decision.md), number it, and fill in the sections. Keep it short; an ADR
   that nobody reads because it's long has failed at its only job.
 
   In the Module 3 lab you hand this template to the AI and ask it to fill it out for a real decision,
@@ -12,7 +12,7 @@
   Delete these HTML comments when you write the real ADR.
 -->
 
-# ADR NNNN — <short decision title>
+# ADR NNNN: <short decision title>
 
 - **Status:** proposed | accepted | superseded by ADR-XXXX
 - **Date:** YYYY-MM-DD
@@ -32,10 +32,10 @@
 <!-- The options you did NOT pick, and the one-line reason each lost. This is the part that saves a
      future reader from re-litigating the decision. -->
 
-- **<option>** — <why not>
-- **<option>** — <why not>
+- **<option>:** <why not>
+- **<option>:** <why not>
 
 ## Consequences
 
 <!-- What this decision makes easier, harder, or impossible later. Include the downsides you accepted
-     with open eyes — an ADR with no negative consequences is hiding something. -->
+     with open eyes; an ADR with no negative consequences is hiding something. -->

modules/03-version-control-for-words/lab/runbook-template.md

@@ -1,5 +1,5 @@
 <!--
-  Runbook template — the step-by-step for one operational task.
+  Runbook template: the step-by-step for one operational task.
 
   A runbook is read under pressure, often by someone who is not the person who wrote it and not at
   their best (it's 3 a.m., something is on fire). Optimize for "follow it exactly, no thinking
@@ -11,10 +11,10 @@
   Delete these HTML comments when you write the real runbook.
 -->
 
-# Runbook — <task name>
+# Runbook: <task name>
 
 - **Purpose:** <one sentence: what this runbook gets you out of>
-- **When to run:** <the trigger — the alert, the symptom, the request>
+- **When to run:** <the trigger, e.g. the alert, the symptom, or the request>
 - **Owner:** <team or role responsible>
 - **Last verified:** YYYY-MM-DD