fix(frontend): correct plural forms for count labels

frontend/messages/en.json

@@ -31,7 +31,16 @@
   "dashboard_noRoutines": "No routines in the past 2 weeks.",
 
   "products_title": "Products",
-  "products_count": "{count} products",
+  "products_count": [
+    {
+      "declarations": ["input count", "local countPlural = count: plural"],
+      "selectors": ["countPlural"],
+      "match": {
+        "countPlural=one": "{count} product",
+        "countPlural=*": "{count} products"
+      }
+    }
+  ],
   "products_addNew": "+ Add product",
   "products_suggest": "Suggest",
   "products_suggestTitle": "Shopping suggestions",
@@ -83,7 +92,16 @@
   "inventory_confirmDelete": "Delete this package?",
 
   "routines_title": "Routines",
-  "routines_count": "{count} routines (last 30 days)",
+  "routines_count": [
+    {
+      "declarations": ["input count", "local countPlural = count: plural"],
+      "selectors": ["countPlural"],
+      "match": {
+        "countPlural=one": "{count} routine (last 30 days)",
+        "countPlural=*": "{count} routines (last 30 days)"
+      }
+    }
+  ],
   "routines_suggestAI": "Suggest AI routine",
   "routines_addNew": "+ New routine",
   "routines_noRoutines": "No routines found.",
@@ -160,7 +178,16 @@
   "suggest_batchContextPlaceholder": "e.g. sunny trip to Italy, active mountain vacation...",
   "suggest_generatePlan": "Generate plan",
   "suggest_generatingPlan": "Generating plan…",
-  "suggest_planTitle": "Plan ({count} days)",
+  "suggest_planTitle": [
+    {
+      "declarations": ["input count", "local countPlural = count: plural"],
+      "selectors": ["countPlural"],
+      "match": {
+        "countPlural=one": "Plan ({count} day)",
+        "countPlural=*": "Plan ({count} days)"
+      }
+    }
+  ],
   "suggest_saveAllRoutines": "Save all routines",
   "suggest_amSteps": "steps",
   "suggest_pmSteps": "steps",
@@ -177,7 +204,16 @@
   "suggest_stepOptionalBadge": "optional",
 
   "medications_title": "Medications",
-  "medications_count": "{count} entries",
+  "medications_count": [
+    {
+      "declarations": ["input count", "local countPlural = count: plural"],
+      "selectors": ["countPlural"],
+      "match": {
+        "countPlural=one": "{count} entry",
+        "countPlural=*": "{count} entries"
+      }
+    }
+  ],
   "medications_addNew": "+ Add medication",
   "medications_newTitle": "New medication",
   "medications_kind": "Kind",
@@ -187,7 +223,16 @@
   "medications_activeSubstancePlaceholder": "e.g. cholecalciferol",
   "medications_notes": "Notes",
   "medications_added": "Medication added.",
-  "medications_usages": "{count} usages",
+  "medications_usages": [
+    {
+      "declarations": ["input count", "local countPlural = count: plural"],
+      "selectors": ["countPlural"],
+      "match": {
+        "countPlural=one": "{count} usage",
+        "countPlural=*": "{count} usages"
+      }
+    }
+  ],
   "medications_noMedications": "No medications recorded.",
   "medications_kindPrescription": "Prescription",
   "medications_kindOtc": "OTC",
@@ -196,7 +241,16 @@
   "medications_kindOther": "Other",
 
   "labResults_title": "Lab Results",
-  "labResults_count": "{count} results",
+  "labResults_count": [
+    {
+      "declarations": ["input count", "local countPlural = count: plural"],
+      "selectors": ["countPlural"],
+      "match": {
+        "countPlural=one": "{count} result",
+        "countPlural=*": "{count} results"
+      }
+    }
+  ],
   "labResults_addNew": "+ Add result",
   "labResults_newTitle": "New lab result",
   "labResults_flagFilter": "Flag:",
@@ -222,7 +276,16 @@
   "labResults_noResults": "No lab results found.",
 
   "skin_title": "Skin Snapshots",
-  "skin_count": "{count} snapshots",
+  "skin_count": [
+    {
+      "declarations": ["input count", "local countPlural = count: plural"],
+      "selectors": ["countPlural"],
+      "match": {
+        "countPlural=one": "{count} snapshot",
+        "countPlural=*": "{count} snapshots"
+      }
+    }
+  ],
   "skin_addNew": "+ Add snapshot",
   "skin_aiAnalysisTitle": "AI analysis from photos",
   "skin_aiUploadText": "Upload 1–3 photos of your skin. AI will pre-fill the form fields below.",