feat(home): add relative dates to timeline and brew cards

- Add relative_date() helper to views module for humanized timestamps
- Show relative dates on home page timeline preview and brew cards
- Format: "Just now", "Xm ago", "Xh ago", "Yesterday", "Xd/Xw ago"

src/presentation/web/views/brews.rs

@@ -1,5 +1,7 @@
 use crate::domain::brews::{Brew, BrewWithDetails};
 
+use super::relative_date;
+
 #[derive(Clone)]
 pub struct BrewView {
     pub id: String,
@@ -20,6 +22,7 @@ pub struct BrewView {
     pub water_temp: String,
     pub ratio: String,
     pub created_at: String,
+    pub relative_date_label: String,
     // Raw values for "brew again" feature
     pub coffee_weight_raw: f64,
     pub grind_setting_raw: f64,
@@ -60,6 +63,7 @@ impl BrewView {
             water_temp: format!("{:.1}\u{00B0}C", brew.brew.water_temp),
             ratio,
             created_at: brew.brew.created_at.format("%Y-%m-%d %H:%M").to_string(),
+            relative_date_label: relative_date(brew.brew.created_at),
             coffee_weight_raw: brew.brew.coffee_weight,
             grind_setting_raw: brew.brew.grind_setting,
             water_volume_raw: brew.brew.water_volume,

src/presentation/web/views/mod.rs

@@ -28,8 +28,49 @@ pub struct StatsView {
     pub gear: u64,
 }
 
+use chrono::{DateTime, Utc};
+
 use crate::domain::listing::{DEFAULT_PAGE_SIZE, ListRequest, Page, PageSize, SortKey};
 
+fn relative_date(dt: DateTime<Utc>) -> String {
+    let now = Utc::now();
+    let delta = now.signed_duration_since(dt);
+    let secs = delta.num_seconds();
+
+    if secs < 60 {
+        return "Just now".to_string();
+    }
+
+    let mins = delta.num_minutes();
+    if mins < 60 {
+        return format!("{mins}m ago");
+    }
+
+    let hours = delta.num_hours();
+    if hours < 24 {
+        return format!("{hours}h ago");
+    }
+
+    let days = delta.num_days();
+    if days == 1 {
+        return "Yesterday".to_string();
+    }
+    if days < 7 {
+        return format!("{days}d ago");
+    }
+
+    let weeks = days / 7;
+    if days < 30 {
+        return format!("{weeks}w ago");
+    }
+
+    if dt.format("%Y").to_string() == now.format("%Y").to_string() {
+        dt.format("%b %d").to_string()
+    } else {
+        dt.format("%b %d, %Y").to_string()
+    }
+}
+
 pub struct Paginated<T> {
     pub items: Vec<T>,
     pub page: u32,

src/presentation/web/views/timeline.rs

@@ -1,5 +1,7 @@
 use crate::domain::timeline::{TimelineEvent, TimelineEventDetail};
 
+use super::relative_date;
+
 #[derive(Clone)]
 pub struct TimelineEventDetailView {
     pub label: String,
@@ -25,6 +27,7 @@ pub struct TimelineEventView {
     pub id: String,
     pub kind_label: &'static str,
     pub date_label: String,
+    pub relative_date_label: String,
     pub time_label: Option<String>,
     pub iso_timestamp: String,
     pub title: String,
@@ -116,6 +119,7 @@ impl TimelineEventView {
             id: id.to_string(),
             kind_label,
             date_label: occurred_at.format("%B %d, %Y").to_string(),
+            relative_date_label: relative_date(occurred_at),
             time_label: Some(occurred_at.format("%H:%M UTC").to_string()),
             iso_timestamp: occurred_at.to_rfc3339(),
             title,

templates/home.html

@@ -192,10 +192,13 @@
   <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 items-start gap-4">
     {% for brew in recent_brews %}
     <div class="rounded-lg border border-amber-200 bg-amber-50 px-4 pt-4 pb-3 shadow-sm min-w-0">
+      <div class="flex items-start justify-between gap-2">
         <div class="min-w-0">
           <a href="/roasters/{{ brew.roaster_slug }}/roasts/{{ brew.roast_slug }}" class="block truncate font-semibold text-amber-800 hover:text-amber-600">{{ brew.roast_name }}</a>
           <p class="truncate text-sm text-stone-500">{{ brew.roaster_name }}</p>
         </div>
+        <time class="text-xs text-stone-500 whitespace-nowrap shrink-0">{{ brew.relative_date_label }}</time>
+      </div>
       <div class="mt-2 space-y-0.5 text-sm">
         <p class="truncate"><span class="font-medium text-stone-800">{{ brew.coffee_weight }} / {{ brew.water_volume }}</span> <span class="text-stone-500">· {{ brew.ratio }} · {{ brew.water_temp }}</span></p>
         <p class="truncate"><span class="font-medium text-stone-800">{{ brew.grind_setting }}</span> <span class="text-stone-500">· {{ brew.grinder_name }}</span></p>
@@ -262,7 +265,7 @@
         <span class="inline-flex w-28 shrink-0 items-center justify-center whitespace-nowrap rounded-full px-2 py-0.5 text-xs font-semibold bg-amber-200 text-amber-800">{{ event.kind_label }}</span>
         <a href="{{ event.link }}" class="truncate font-medium text-stone-700 hover:text-amber-600 text-sm">{{ event.title }}</a>
       </div>
-      <time class="text-xs text-stone-500 whitespace-nowrap shrink-0">{{ event.date_label }}</time>
+      <time class="text-xs text-stone-500 whitespace-nowrap shrink-0">{{ event.relative_date_label }}</time>
     </div>
     {% endfor %}
   </div>