fix(quarto): repair LaTeX + Typst branded templates

- LaTeX: capture pandoc's \subtitle into \thesubtitle so subtitled PDFs
  compile; suppress the default \maketitle/abstract so only the branded
  title page renders (no double title); drop the unused tikz dependency
  from the title partial (#13)
- LaTeX: stop requiring a "Source Serif 4 SemiBold" face that the setup
  never installs; use the family's native Bold weight (#14)
- Typst: wrap title/subtitle/date in [ ] so text containing Typst keywords
  ("for"/"in") no longer breaks compilation (#12)
- Fix footer URL civilytics.consulting -> civilytics.com in the LaTeX and
  Typst templates and the slides example (#11)
- Bump version to 0.3.0

inst/quarto/typst/civilytics-typst.typ

@@ -54,7 +54,7 @@
       grid(
         columns: (1fr, auto, 1fr),
         align: (left, center, right),
-        [civilytics.consulting],
+        [civilytics.com],
         counter(page).display("1 / 1", both: true),
         [© 2026]
       )
@@ -231,11 +231,14 @@
 }
 
 // Quarto entry point
+// Title/subtitle/date are wrapped in [ ] so arbitrary text (incl. words that
+// are Typst keywords like "for"/"in") is treated as content, not code.
+// See civilyticsR issue #12.
 #show: doc => civilytics(
-  title: $title$,
-  $if(subtitle)$subtitle: $subtitle$,$endif$
+  title: [$title$],
+  $if(subtitle)$subtitle: [$subtitle$],$endif$
   $if(by-author)$authors: ($for(by-author)$"$it.name.literal$",$endfor$),$endif$
-  $if(date)$date: $date$,$endif$
+  $if(date)$date: [$date$],$endif$
   $if(abstract)$abstract: [$abstract$],$endif$
   toc: $if(toc)$true$else$false$endif$,
   doc