fix: batch tag queries, inline edit, delete response, SPA catch-all, link glyph

- Fix N+1 tag query in List() with batched IN clause
- Add inline body editing in web detail pane (dblclick or e key)
- Delete API returns {result: "soft"|"hard"} with 200 instead of 204
- SPA handler serves index.html for all extensionless paths
- Link glyph changed from emoji 🔗 to unicode ↗ for terminal alignment
- Capture bar contrast and hover glow increased
- Comment on load-bearing "--" in root.go

internal/api/entities.go

@@ -214,10 +214,14 @@ func updateEntity(store *db.Store) http.HandlerFunc {
 	}
 }
 
+type DeleteResponse struct {
+	Result string `json:"result"`
+}
+
 func deleteEntity(store *db.Store) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		id := chi.URLParam(r, "id")
-		_, err := store.SoftDelete(id)
+		result, err := store.SoftDelete(id)
 		if err != nil {
 			if err == db.ErrNotFound {
 				writeError(w, http.StatusNotFound, "not_found", "no entity with id "+id)
@@ -226,7 +230,11 @@ func deleteEntity(store *db.Store) http.HandlerFunc {
 			writeError(w, http.StatusInternalServerError, "internal", err.Error())
 			return
 		}
-		w.WriteHeader(http.StatusNoContent)
+		label := "soft"
+		if result == db.DeletedHard {
+			label = "hard"
+		}
+		writeJSON(w, http.StatusOK, DeleteResponse{Result: label})
 	}
 }