fitness: shorter strings for main activity buttons, add missing pages

src/models/IntervalTemplate.ts

@@ -0,0 +1,70 @@
+import mongoose from 'mongoose';
+
+export interface IIntervalStep {
+  label: string;
+  durationType: 'distance' | 'time';
+  durationValue: number; // meters (distance) or seconds (time)
+}
+
+export interface IIntervalTemplate {
+  _id?: string;
+  name: string;
+  steps: IIntervalStep[];
+  createdBy: string;
+  createdAt?: Date;
+  updatedAt?: Date;
+}
+
+const IntervalStepSchema = new mongoose.Schema({
+  label: {
+    type: String,
+    required: true,
+    trim: true,
+    maxlength: 50
+  },
+  durationType: {
+    type: String,
+    required: true,
+    enum: ['distance', 'time']
+  },
+  durationValue: {
+    type: Number,
+    required: true,
+    min: 1
+  }
+});
+
+const IntervalTemplateSchema = new mongoose.Schema(
+  {
+    name: {
+      type: String,
+      required: true,
+      trim: true,
+      maxlength: 100
+    },
+    steps: {
+      type: [IntervalStepSchema],
+      required: true,
+      validate: {
+        validator: function(steps: IIntervalStep[]) {
+          return steps.length > 0;
+        },
+        message: 'An interval template must have at least one step'
+      }
+    },
+    createdBy: {
+      type: String,
+      required: true,
+      trim: true
+    }
+  },
+  {
+    timestamps: true,
+    toJSON: { virtuals: true },
+    toObject: { virtuals: true }
+  }
+);
+
+IntervalTemplateSchema.index({ createdBy: 1 });
+
+export const IntervalTemplate = mongoose.model<IIntervalTemplate>("IntervalTemplate", IntervalTemplateSchema);