Validate templated actions against the page pattern

resolve_question returns a clone with a concrete id, so is_dynamic()
on it was always false and every templated action failed lint.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/content.rs

@@ -1119,13 +1119,18 @@ pub fn validate_questions(
                         a
                     };
                     let _ = probe;
-                    match resolve_question(questions, &filled) {
+                    // Match the pattern itself: resolve_question would
-                        Some(target) if target.is_dynamic() => continue,
+                    // hand back a clone whose id is already concrete.
-                        _ => anyhow::bail!(
+                    let lands = questions
-                            "question {:?} alternative {:?}: templated action {:?} must land on a dynamic page ([name].yaml)",
+                        .values()
-                            question.id, alternative.name, action
+                        .any(|q| q.is_dynamic() && path_matches(&q.id, &filled).is_some());
-                        ),
+                    if lands {
+                        continue;
                     }
+                    anyhow::bail!(
+                        "question {:?} alternative {:?}: templated action {:?} must land on a dynamic page ([name].yaml)",
+                        question.id, alternative.name, action
+                    );
                 }
                 match questions.get(action) {
                     None => anyhow::bail!(
@@ -2025,6 +2030,22 @@ alternatives:
         assert_eq!(render_inline_markdown("[mail](mailto:bl@uhhm.no)"), "<a href=\"mailto:bl@uhhm.no\">mail</a>");
     }
 
+    #[test]
+    fn templated_action_validates_against_the_dynamic_page() {
+        let landing: Question = serde_yaml::from_str(
+            "id: /\nname: L\nalternatives:\n  - name: A\n    action: /shape/{curve.key}\n",
+        )
+        .unwrap();
+        let place: Question = serde_yaml::from_str("id: /shape/[key]\nname: P\n").unwrap();
+        let mut qs = std::collections::HashMap::new();
+        qs.insert(landing.id.clone(), landing.clone());
+        qs.insert(place.id.clone(), place);
+        validate_questions(&qs, &Default::default()).unwrap();
+        let mut only_landing = std::collections::HashMap::new();
+        only_landing.insert(landing.id.clone(), landing);
+        assert!(validate_questions(&only_landing, &Default::default()).is_err());
+    }
+
     #[test]
     fn action_templates_from_responses() {
         let r = serde_json::json!({"curve": {"key": "20aa98", "points": [[0,0]]}, "n": 3});