refactor: standardize view model conversions on From trait

Convert single-argument from_domain() methods to impl From<T> for
consistency with the existing CafeView, RoasterView, and option view
patterns. Affected: BagView, BrewView, CupView, GearView,
GearDetailView, CafeDetailView, RoasterDetailView, TimelineEventView.

RoastView retains from_domain() since it takes extra parameters.

src/application/routes/api/coffee/bags.rs

@@ -46,7 +46,7 @@ pub(crate) async fn load_bag_page(
     let (bags, navigator) = crate::application::routes::support::build_page_view(
         page,
         request,
-        BagView::from_domain,
+        BagView::from,
         BAG_PAGE_PATH,
         BAG_FRAGMENT_PATH,
         search.map(String::from),

src/application/routes/api/coffee/brews.rs

@@ -133,7 +133,7 @@ pub(crate) async fn load_brew_page(
     let (brews, navigator) = crate::application::routes::support::build_page_view(
         page,
         request,
-        BrewView::from_domain,
+        BrewView::from,
         BREW_PAGE_PATH,
         BREW_FRAGMENT_PATH,
         search.map(String::from),

src/application/routes/api/coffee/cups.rs

@@ -44,7 +44,7 @@ pub(crate) async fn load_cup_page(
     Ok(crate::application::routes::support::build_page_view(
         page,
         request,
-        CupView::from_domain,
+        CupView::from,
         CUP_PAGE_PATH,
         CUP_FRAGMENT_PATH,
         search.map(String::from),

src/application/routes/api/coffee/gear.rs

@@ -46,7 +46,7 @@ pub(crate) async fn load_gear_page(
     Ok(crate::application::routes::support::build_page_view(
         page,
         request,
-        GearView::from_domain,
+        GearView::from,
         GEAR_PAGE_PATH,
         GEAR_FRAGMENT_PATH,
         search.map(String::from),

src/application/routes/app/cafes.rs

@@ -30,7 +30,7 @@ pub(crate) async fn cafe_detail_page(
     let image_url = resolve_image_url(&state, EntityType::Cafe, i64::from(cafe.id)).await;
     let edit_url = format!("/cafes/{}/edit", cafe.id);
 
-    let view = CafeDetailView::from_domain(cafe);
+    let view = CafeDetailView::from(cafe);
 
     let template = CafeDetailTemplate {
         nav_active: "",

src/application/routes/app/gear.rs

@@ -29,7 +29,7 @@ pub(crate) async fn gear_detail_page(
 
     let image_url = resolve_image_url(&state, EntityType::Gear, i64::from(id)).await;
 
-    let view = GearDetailView::from_domain(gear);
+    let view = GearDetailView::from(gear);
 
     let template = GearDetailTemplate {
         nav_active: "",

src/application/routes/app/home.rs

@@ -117,19 +117,19 @@ async fn load_home_content(state: &AppState) -> Result<HomeContent, AppError> {
     let recent_brews: Vec<BrewView> = recent_brews_page
         .items
         .into_iter()
-        .map(BrewView::from_domain)
+        .map(BrewView::from)
         .collect();
 
     let open_bags = open_bags_page
         .items
         .into_iter()
-        .map(BagView::from_domain)
+        .map(BagView::from)
         .collect();
 
     let recent_events = recent_events_page
         .items
         .into_iter()
-        .map(TimelineEventView::from_domain)
+        .map(TimelineEventView::from)
         .collect();
 
     Ok(HomeContent {

src/application/routes/app/roasters.rs

@@ -30,7 +30,7 @@ pub(crate) async fn roaster_detail_page(
     let image_url = resolve_image_url(&state, EntityType::Roaster, i64::from(roaster.id)).await;
     let edit_url = format!("/roasters/{}/edit", roaster.id);
 
-    let view = RoasterDetailView::from_domain(roaster);
+    let view = RoasterDetailView::from(roaster);
 
     let template = RoasterDetailTemplate {
         nav_active: "",

src/application/routes/app/timeline.rs

@@ -128,7 +128,7 @@ async fn load_timeline_page(
 fn prepare_event(event: TimelineEvent) -> TimelinePreparedEvent {
     let anchor = event.occurred_at.format("%Y-%m").to_string();
     let heading = event.occurred_at.format("%B %Y").to_string();
-    let view = TimelineEventView::from_domain(event);
+    let view = TimelineEventView::from(event);
 
     TimelinePreparedEvent {
         anchor,

src/presentation/web/views/bags.rs

@@ -34,8 +34,8 @@ pub struct BagView {
     pub used_percent: u8,
 }
 
-impl BagView {
-    pub fn from_domain(bag: BagWithRoast) -> Self {
+impl From<BagWithRoast> for BagView {
+    fn from(bag: BagWithRoast) -> Self {
         let used_percent = used_percent(bag.bag.amount, bag.bag.remaining);
         let (created_date, created_time) = format_datetime(bag.bag.created_at);
         Self {

src/presentation/web/views/brews.rs

@@ -67,8 +67,8 @@ pub struct BrewView {
     pub brew_time_raw: Option<i32>,
 }
 
-impl BrewView {
-    pub fn from_domain(brew: BrewWithDetails) -> Self {
+impl From<BrewWithDetails> for BrewView {
+    fn from(brew: BrewWithDetails) -> Self {
         let ratio = if brew.brew.coffee_weight > 0.0 {
             format!(
                 "1:{:.1}",
@@ -133,7 +133,9 @@ impl BrewView {
             brew_time_raw: brew.brew.brew_time,
         }
     }
+}
 
+impl BrewView {
     /// Build a URL to the add-brew form pre-filled with this brew's parameters.
     pub fn brew_again_url(&self) -> String {
         let mut url = format!(

src/presentation/web/views/cafes.rs

@@ -19,8 +19,8 @@ pub struct CafeDetailView {
     pub created_time: String,
 }
 
-impl CafeDetailView {
-    pub fn from_domain(cafe: Cafe) -> Self {
+impl From<Cafe> for CafeDetailView {
+    fn from(cafe: Cafe) -> Self {
         let (created_date, created_time) = format_datetime(cafe.created_at);
         let country_flag = country_to_iso(&cafe.country)
             .map(iso_to_flag_emoji)

src/presentation/web/views/cups.rs

@@ -21,8 +21,8 @@ pub struct CupView {
     pub created_time: String,
 }
 
-impl CupView {
-    pub fn from_domain(cup: CupWithDetails) -> Self {
+impl From<CupWithDetails> for CupView {
+    fn from(cup: CupWithDetails) -> Self {
         let (created_date, created_time) = format_datetime(cup.cup.created_at);
         Self {
             id: cup.cup.id.to_string(),

src/presentation/web/views/gear.rs

@@ -11,8 +11,8 @@ pub struct GearDetailView {
     pub created_time: String,
 }
 
-impl GearDetailView {
-    pub fn from_domain(gear: Gear) -> Self {
+impl From<Gear> for GearDetailView {
+    fn from(gear: Gear) -> Self {
         let (created_date, created_time) = format_datetime(gear.created_at);
         Self {
             id: gear.id.to_string(),
@@ -37,8 +37,8 @@ pub struct GearView {
     pub created_time: String,
 }
 
-impl GearView {
-    pub fn from_domain(gear: Gear) -> Self {
+impl From<Gear> for GearView {
+    fn from(gear: Gear) -> Self {
         let (created_date, created_time) = format_datetime(gear.created_at);
         Self {
             id: gear.id.to_string(),

src/presentation/web/views/roasters.rs

@@ -17,8 +17,8 @@ pub struct RoasterDetailView {
     pub created_time: String,
 }
 
-impl RoasterDetailView {
-    pub fn from_domain(roaster: Roaster) -> Self {
+impl From<Roaster> for RoasterDetailView {
+    fn from(roaster: Roaster) -> Self {
         let country_flag = country_to_iso(&roaster.country)
             .map(iso_to_flag_emoji)
             .unwrap_or_default();

src/presentation/web/views/timeline.rs

@@ -69,8 +69,8 @@ pub struct TimelineMonthView {
     pub events: Vec<TimelineEventView>,
 }
 
-impl TimelineEventView {
-    pub fn from_domain(event: TimelineEvent) -> Self {
+impl From<TimelineEvent> for TimelineEventView {
+    fn from(event: TimelineEvent) -> Self {
         let TimelineEvent {
             id,
             entity_type,
@@ -161,7 +161,9 @@ impl TimelineEventView {
             brew_data: brew_data_view,
         }
     }
+}
 
+impl TimelineEventView {
     fn build_subtitle(entity_type: &str, details: &[TimelineEventDetailView]) -> Option<String> {
         let find_value = |label: &str| {
             details