feat(routes): redirect to detail page after creating brews and cups

Update create_brew, create_cup, and submit_checkin to navigate to the
new detail pages instead of reloading or redirecting to home.

src/application/routes/api/brews.rs

@@ -254,9 +254,11 @@ pub(crate) async fn create_brew(
     info!(brew_id = %enriched.brew.id, "brew created");
     state.stats_invalidator.invalidate();
 
+    let detail_url = format!("/brews/{}", enriched.brew.id);
+
     if is_datastar_request(&headers) {
         // If the request came from a page that has #brew-list, return the updated fragment.
-        // Otherwise (homepage, timeline, etc.), trigger a page reload instead.
+        // Otherwise (homepage, add page, etc.), redirect to the brew detail page.
         let from_brew_page = headers
             .get("referer")
             .and_then(|v| v.to_str().ok())
@@ -268,8 +270,8 @@ pub(crate) async fn create_brew(
                 .map_err(ApiError::from)
         } else {
             use axum::http::header::HeaderValue;
-            let mut response =
-                axum::response::Html("<script>window.location.reload()</script>").into_response();
+            let script = format!("<script>window.location.href='{detail_url}'</script>");
+            let mut response = axum::response::Html(script).into_response();
             response
                 .headers_mut()
                 .insert("datastar-selector", HeaderValue::from_static("body"));
@@ -279,7 +281,7 @@ pub(crate) async fn create_brew(
             Ok(response)
         }
     } else if matches!(source, PayloadSource::Form) {
-        Ok(Redirect::to("/").into_response())
+        Ok(Redirect::to(&detail_url).into_response())
     } else {
         Ok((StatusCode::CREATED, Json(enriched)).into_response())
     }

src/application/routes/api/checkin.rs

@@ -89,10 +89,21 @@ pub(crate) async fn submit_checkin(
         .await
         .map_err(AppError::from)?;
 
+    let detail_url = format!("/cups/{}", cup.id);
+
     if is_datastar_request(&headers) {
-        crate::application::routes::support::render_signals_json(&[]).map_err(ApiError::from)
+        use axum::http::header::HeaderValue;
+        let script = format!("<script>window.location.href='{detail_url}'</script>");
+        let mut response = axum::response::Html(script).into_response();
+        response
+            .headers_mut()
+            .insert("datastar-selector", HeaderValue::from_static("body"));
+        response
+            .headers_mut()
+            .insert("datastar-mode", HeaderValue::from_static("append"));
+        Ok(response)
     } else if matches!(source, PayloadSource::Form) {
-        Ok(Redirect::to("/").into_response())
+        Ok(Redirect::to(&detail_url).into_response())
     } else {
         Ok((StatusCode::CREATED, Json(cup)).into_response())
     }

src/application/routes/api/cups.rs

@@ -52,7 +52,7 @@ pub(crate) async fn create_cup(
     Query(query): Query<ListQuery>,
     payload: FlexiblePayload<NewCup>,
 ) -> Result<Response, ApiError> {
-    let (request, search) = query.into_request_and_search::<CupSortKey>();
+    let (_request, _search) = query.into_request_and_search::<CupSortKey>();
     let (new_cup, source) = payload.into_parts();
 
     let cup = state
@@ -64,14 +64,21 @@ pub(crate) async fn create_cup(
     info!(cup_id = %cup.id, "cup created");
     state.stats_invalidator.invalidate();
 
+    let detail_url = format!("/cups/{}", cup.id);
+
     if is_datastar_request(&headers) {
-        render_cup_list_fragment(state, request, search, true)
-            .await
-            .map_err(ApiError::from)
+        use axum::http::header::HeaderValue;
+        let script = format!("<script>window.location.href='{detail_url}'</script>");
+        let mut response = axum::response::Html(script).into_response();
+        response
+            .headers_mut()
+            .insert("datastar-selector", HeaderValue::from_static("body"));
+        response
+            .headers_mut()
+            .insert("datastar-mode", HeaderValue::from_static("append"));
+        Ok(response)
     } else if matches!(source, PayloadSource::Form) {
-        let target =
-            ListNavigator::new(CUP_PAGE_PATH, CUP_FRAGMENT_PATH, request, search).page_href(1);
-        Ok(Redirect::to(&target).into_response())
+        Ok(Redirect::to(&detail_url).into_response())
     } else {
         Ok((StatusCode::CREATED, Json(cup)).into_response())
     }

templates/pages/checkin.html

@@ -304,7 +304,7 @@ block title %}Brewlog · Check In{% endblock %} {% block head %}
 
       <form
         data-on:submit="$_submitting = true; $_error = ''; @post('/api/v1/check-in', {contentType: 'form'})"
-        data-on:datastar-fetch="if (!$_submitting) return; if (evt.detail.type === 'finished') { window.location.href = '/' } else if (evt.detail.type === 'error') { $_submitting = false; $_error = 'Check-in failed. Please try again.' }"
+        data-on:datastar-fetch="if (!$_submitting) return; if (evt.detail.type === 'error') { $_submitting = false; $_error = 'Check-in failed. Please try again.' }"
       >
         <input type="hidden" name="cafe_id" data-attr:value="$_cafeId" />
         <input type="hidden" name="cafe_name" data-attr:value="$_cafeName" />