fix(i18n): drop spaced dashes as separators from every visible string

A dash between two parts of a sentence ("{what} — tomorrow", "Could not
record {name} — try again", "End {name} — …") stands in for a comma, a
colon or a full stop the sentence should say. Every such string in the
seven bundles now says it in plain words. A range keeps its unspaced en
dash ("70–100 mmHg", "{start}–{end}"); that is how a range is written,
not a pause, and the spaced range forms became unspaced ones.

Labels the components put together themselves follow the same rule:
aria-labels read "Move up: Ramipril", a medication and its dose read
"Ramipril 5 mg", page titles use "|", Coach prefills are two sentences,
and the API's user-facing error messages lost their dashes too.

The bundle guard now refuses " — " and " – " beside " · ", with an empty
allowlist, and a sibling guard walks src/components and src/app for a
string or template literal that joins its parts with a spaced dash.

src/components/ui/filter-bar.tsx

@@ -229,7 +229,7 @@ export function FilterBarDateRange({
   const fmt = useFormatters();
   const active = from !== "" || to !== "";
   const display = active
-    ? `${from ? fmt.dateShortSmart(from) : "…"} – ${to ? fmt.dateShortSmart(to) : "…"}`
+    ? `${from ? fmt.dateShortSmart(from) : "…"}–${to ? fmt.dateShortSmart(to) : "…"}`
     : null;
   const clear = () => {
     onFromChange("");
@@ -326,7 +326,7 @@ export function FilterBarNumberRange({
   toLabel: string;
 }) {
   const active = min !== "" || max !== "";
-  const display = active ? `${min || "…"} – ${max || "…"}` : null;
+  const display = active ? `${min || "…"}–${max || "…"}` : null;
   const clear = () => {
     onMinChange("");
     onMaxChange("");