fix(no-slop): remove em-dashes from the wiki generator + README

The wiki still showed em-dashes from generated chrome, not the lessons: the banner,
the UNITS unit titles (sidebar + Home TOC), the Home footer line, and the README
intro that feeds Home. Switched those to colons/semicolons and de-slopped README
(incl. a "How git works in this course" note + a Claude-Code-as-example bullet, and
a refreshed Status). Rendered wiki now has 0 em-dashes. Generator still compiles.

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

tools/build_wiki.py

@@ -3,11 +3,11 @@
 
 Host-agnostic: this writes Markdown into a target wiki working directory. A thin
 per-host CI wrapper clones the host's `<repo>.wiki.git`, runs this script, then
-commits and pushes. The same script feeds both the Gitea and GitHub wikis — only
+commits and pushes. The same script feeds both the Gitea and GitHub wikis; only
 the `--host` URL flavor and the CI wrapper differ.
 
 The wiki is GENERATED BUILD OUTPUT. Never hand-edit it; edit modules/ and let CI
-re-render. Labs are NOT copied into the wiki — lesson pages link to the runnable
+re-render. Labs are NOT copied into the wiki; lesson pages link to the runnable
 files back in the main repo. Each page gets prev/next navigation so the wiki reads
 like a textbook.
 
@@ -24,11 +24,11 @@ from pathlib import Path
 
 # Unit structure (module numbers), from the syllabus. Drives the textbook nav.
 UNITS = [
-    ("Unit 1 — Get out of the chat window", range(1, 8)),
-    ("Unit 2 — Make it shareable, reviewable, recoverable", range(8, 13)),
-    ("Unit 3 — Automate the checking and shipping", range(13, 20)),
-    ("Unit 4 — Extend the AI into your systems", range(20, 24)),
-    ("Unit 5 — AI in the Loop", range(24, 28)),
+    ("Unit 1: Get out of the chat window", range(1, 8)),
+    ("Unit 2: Make it shareable, reviewable, recoverable", range(8, 13)),
+    ("Unit 3: Automate the checking and shipping", range(13, 20)),
+    ("Unit 4: Extend the AI into your systems", range(20, 24)),
+    ("Unit 5: AI in the Loop", range(24, 28)),
 ]
 
 
@@ -48,7 +48,7 @@ def first_h1(text: str, fallback: str) -> str:
 
 
 def short_title(h1: str) -> str:
-    """'Module 1 — The Copy-Paste Problem' -> 'The Copy-Paste Problem'."""
+    """'Module 1: The Copy-Paste Problem' -> 'The Copy-Paste Problem'."""
     m = re.match(r"^Module\s+\d+\s*[—:-]\s*(.+)$", h1)
     return m.group(1).strip() if m else h1
 
@@ -78,7 +78,7 @@ def rewrite_repo_file_links(body: str, web_base: str, branch: str, host: str) ->
 def banner(source_path: str, source_url: str) -> str:
     return (
         f"> 📖 _This page is generated from [`{source_path}`]({source_url}). "
-        f"**Edit the source, not the wiki** — edits here are overwritten on the next sync. "
+        f"**Edit the source, not the wiki**; edits here are overwritten on the next sync. "
         f"Run the hands-on labs from the repo, linked inline._\n"
     )
 
@@ -153,7 +153,7 @@ def main() -> int:
     cap_title = None
     if cap.exists():
         body = cap.read_text(encoding="utf-8")
-        cap_title = first_h1(body, "Capstone — The Full Loop")
+        cap_title = first_h1(body, "Capstone: The Full Loop")
         seq.append({"page": "capstone", "label": cap_title, "body": body, "slug": None})
 
     # --- pass 2: write each page with banner + prev/next nav --------------
@@ -212,7 +212,7 @@ def main() -> int:
         home.append("")
     home.append(
         "\n---\n> 📖 _This wiki is generated from the "
-        f"[course repo]({args.web_base}) — edit `modules/` there, not these pages._"
+        f"[course repo]({args.web_base}); edit `modules/` there, not these pages._"
     )
     (out / "Home.md").write_text("\n".join(home) + "\n", encoding="utf-8")