fix(web): judge each alias of a reconciled endpoint, so an all-local transcript is not called cloud-served (#52)

The two-engine path writes '<base> + <alt>, reconciled by <model>'. IsLocalModel is a
single-alias match, so the composite was 'not local' and the note claimed the audio left
the homelab, naming a local host as the provider. Found by the PR #58 review.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/web/uploads.go

@@ -273,12 +273,30 @@ func titleFromFilename(name string) string {
 // cloudProvider names the cloud service that produced a transcript, or false when it was
 // served locally (or by an unknown endpoint). "Local" is config.IsLocalModel: the same
 // definition the start-up validation uses, not a second string match here (#52).
+//
+// The endpoint is one alias, except for the two-engine path (ADR-034), which writes
+// "<base> + <alt>, reconciled by <model>". Every alias in it is judged on its own, so a
+// composite of local models is local and one naming a cloud alias names that provider.
 func cloudProvider(endpoint string) (string, bool) {
-	if endpoint == "" || config.IsLocalModel(endpoint) {
+	if strings.TrimSpace(endpoint) == "" {
 		return "", false
 	}
-	provider, _, _ := strings.Cut(endpoint, "/")
-	return provider, true
+	aliases := []string{}
+	for _, tok := range strings.Fields(endpoint) {
+		if tok = strings.Trim(tok, ","); strings.Contains(tok, "/") {
+			aliases = append(aliases, tok)
+		}
+	}
+	if len(aliases) == 0 {
+		aliases = append(aliases, strings.TrimSpace(endpoint))
+	}
+	for _, a := range aliases {
+		if !config.IsLocalModel(a) {
+			provider, _, _ := strings.Cut(a, "/")
+			return provider, true
+		}
+	}
+	return "", false
 }
 
 // hasNote reports whether any phase carries a note. A note is the only warning for a