Add task title editing/deletion, timeline click-to-open, widget app launch

Task-detail modal was description-only with no delete affordance;
HandleUpdateTask now saves the title too and a Delete button hits a new
DELETE /tasks/{id} route backed by store.DeleteNativeTask, which repairs
chain_position/unlocks the successor when the deleted task belongs to a
chain. Timeline tab task/card/gtask rows now open the same detail modal
as the Tasks tab. Android widget's "TODAY" header is now a tap target
that launches DashboardActivity, since nothing previously opened the
full app from the widget.

2 files changed, 42 insertions, 5 deletions

diff --git a/web/templates/partials/task-detail.html b/web/templates/partials/task-detail.html
index 135c38f..abcc5b9 100644
--- a/web/templates/partials/task-detail.html
+++ b/web/templates/partials/task-detail.html
@@ -1,15 +1,28 @@
 {{define "task-detail"}}
 <div class="p-4">
-    <h3 class="font-semibold text-white mb-3">{{.Title}}</h3>
     <form hx-post="/tasks/update" hx-swap="none" hx-on::after-request="if(event.detail.successful) { closeTaskModal(); htmx.trigger(document.body, 'refresh-tasks'); }">
         <input type="hidden" name="id" value="{{.ID}}">
         <input type="hidden" name="source" value="{{.Source}}">
+        <label class="block text-sm font-medium text-white/70 mb-1">Title</label>
+        <input type="text" name="title" value="{{.Title}}" required
+               class="w-full bg-input border border-white/20 rounded-lg px-3 py-2 text-sm font-semibold text-white placeholder-white/50 mb-3">
         <label class="block text-sm font-medium text-white/70 mb-1">Description</label>
         <textarea name="description" class="w-full bg-input border border-white/20 rounded-lg px-3 py-2 text-sm text-white placeholder-white/50 mb-3 h-32">{{.Description}}</textarea>
         <button type="submit" class="w-full bg-white/20 hover:bg-white/30 text-white px-4 py-2 rounded-lg text-sm font-medium">Save</button>
     </form>
 
     {{if .IsDoot}}
+    <button type="button"
+            class="w-full mt-3 bg-red-500/10 hover:bg-red-500/20 text-red-300 px-4 py-2 rounded-lg text-sm font-medium"
+            hx-delete="/tasks/{{.ID}}?source={{.Source}}"
+            hx-confirm="Delete this task? This can't be undone."
+            hx-swap="none"
+            hx-on::after-request="if(event.detail.successful) { closeTaskModal(); htmx.trigger(document.body, 'refresh-tasks'); }">
+        Delete Task
+    </button>
+    {{end}}
+
+    {{if .IsDoot}}
     <div class="mt-4 pt-4 border-t border-white/10">
         <h4 class="text-sm font-medium text-white/70 mb-2">Recurrence</h4>
         {{if .RecurrenceFreq}}
diff --git a/web/templates/partials/timeline-tab.html b/web/templates/partials/timeline-tab.html
index d6f410e..c232001 100644
--- a/web/templates/partials/timeline-tab.html
+++ b/web/templates/partials/timeline-tab.html
@@ -147,7 +147,13 @@
                        hx-swap="outerHTML"
                        class="h-4 w-4 rounded bg-black/40 border-white/30 text-white/80 focus:ring-white/30 cursor-pointer flex-shrink-0">
                 {{end}}
-                <span class="{{if .IsCompleted}}line-through text-white/50{{end}}">{{.Title}}{{multiDayLabel .}}</span>
+                <span class="{{if .IsCompleted}}line-through text-white/50{{end}} {{if or (eq .Type "task") (eq .Type "card") (eq .Type "gtask")}}cursor-pointer hover:underline{{end}}"
+                      {{if or (eq .Type "task") (eq .Type "card") (eq .Type "gtask")}}
+                      hx-get="/tasks/detail?id={{.ID}}&source={{.Source}}"
+                      hx-target="#task-edit-content"
+                      hx-swap="innerHTML"
+                      onclick="document.getElementById('task-edit-modal').classList.remove('hidden')"
+                      {{end}}>{{.Title}}{{multiDayLabel .}}</span>
                 {{if .IsOverdue}}<span class="overdue-badge">overdue</span>{{end}}
                 {{if .ChainTotal}}<span class="chain-badge">{{.ChainPosition}}/{{.ChainTotal}}</span>{{end}}
                 {{if eq .BucketState "active"}}<span class="chain-badge" style="cursor:pointer" hx-post="/defer-atom" hx-vals='{"id": "{{.ID}}"}' hx-swap="none">defer</span>{{end}}
@@ -203,7 +209,13 @@
                            onclick="event.stopPropagation();"
                            class="h-4 w-4 rounded bg-black/40 border-white/30 text-white/80 focus:ring-white/30 cursor-pointer flex-shrink-0">
                     {{end}}
-                    <span class="calendar-event-title {{if .IsCompleted}}line-through text-white/50{{end}}">{{.Title}}</span>
+                    <span class="calendar-event-title {{if .IsCompleted}}line-through text-white/50{{end}} {{if or (eq .Type "task") (eq .Type "card") (eq .Type "gtask")}}cursor-pointer hover:underline{{end}}"
+                          {{if or (eq .Type "task") (eq .Type "card") (eq .Type "gtask")}}
+                          hx-get="/tasks/detail?id={{.ID}}&source={{.Source}}"
+                          hx-target="#task-edit-content"
+                          hx-swap="innerHTML"
+                          onclick="event.stopPropagation(); document.getElementById('task-edit-modal').classList.remove('hidden')"
+                          {{end}}>{{.Title}}</span>
                     {{if .ChainTotal}}<span class="chain-badge">{{.ChainPosition}}/{{.ChainTotal}}</span>{{end}}
                     {{if eq .BucketState "active"}}<span class="chain-badge" style="cursor:pointer" hx-post="/defer-atom" hx-vals='{"id": "{{.ID}}"}' hx-swap="none">defer</span>{{end}}
                 </div>
@@ -253,7 +265,13 @@
                        class="h-4 w-4 rounded bg-black/40 border-white/30 text-white/80 focus:ring-white/30 cursor-pointer shrink-0">
                 {{end}}
                 <!-- Title -->
-                <span class="flex-1 text-sm text-white/80 {{if .IsCompleted}}line-through text-white/40{{end}} truncate">
+                <span class="flex-1 text-sm text-white/80 {{if .IsCompleted}}line-through text-white/40{{end}} truncate {{if or (eq .Type "task") (eq .Type "card") (eq .Type "gtask")}}cursor-pointer hover:underline{{end}}"
+                      {{if or (eq .Type "task") (eq .Type "card") (eq .Type "gtask")}}
+                      hx-get="/tasks/detail?id={{.ID}}&source={{.Source}}"
+                      hx-target="#task-edit-content"
+                      hx-swap="innerHTML"
+                      onclick="document.getElementById('task-edit-modal').classList.remove('hidden')"
+                      {{end}}>
                     {{.Title}}{{multiDayLabel .}}
                     {{if and (eq .MultiDayVariant "") .EndTime}}<span class="text-white/30 text-xs ml-1">– {{.EndTime.Format "3:04 PM"}}</span>{{end}}
                     {{if .ChainTotal}}<span class="chain-badge">{{.ChainPosition}}/{{.ChainTotal}}</span>{{end}}
@@ -330,7 +348,13 @@
 
         <div class="flex-1 min-w-0">
             <div class="flex items-start justify-between gap-2">
-                <h3 class="text-sm text-white font-medium break-words {{if .IsCompleted}}line-through text-white/50{{end}}">{{.Title}}</h3>
+                <h3 class="text-sm text-white font-medium break-words {{if .IsCompleted}}line-through text-white/50{{end}} {{if or (eq .Type "task") (eq .Type "card") (eq .Type "gtask")}}cursor-pointer hover:underline{{end}}"
+                    {{if or (eq .Type "task") (eq .Type "card") (eq .Type "gtask")}}
+                    hx-get="/tasks/detail?id={{.ID}}&source={{.Source}}"
+                    hx-target="#task-edit-content"
+                    hx-swap="innerHTML"
+                    onclick="document.getElementById('task-edit-modal').classList.remove('hidden')"
+                    {{end}}>{{.Title}}</h3>
                 {{if .URL}}
                 <a href="{{.URL}}" target="_blank" class="text-white/50 hover:text-white flex-shrink-0">
                     <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">