feat(web): redesign task rail — Plan/Event log polish, entity graph resize fix

- Plan/Activity panels: humanize step titles, richer icons, empty states
  matching Scope's illustration style, pretty-printed expandable detail
- Activity log renamed to Event log; every step now expandable
- Chat: middle-truncate header title, remove redundant task-list rail and
  header stat cluster (duplicated in the sidebar), simplify markdown styling
- Fix --font-mono actually being a monospace font (was aliased to DM Sans)
- Replace rotating loader-circle spinner with a smoother fading-blade Spinner
- SessionGraph entity detail panel: resizable and self-clamping against its
  live container size (was overflowing into sibling sections), close button
- Dev launch config: fetch bearer token from the running api container so
  `npm run dev` works against the local compose stack without a hardcoded
  secret in a tracked file

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.claude/launch.json

@@ -3,8 +3,8 @@
   "configurations": [
     {
       "name": "web",
-      "runtimeExecutable": "npm",
+      "runtimeExecutable": "sh",
-      "runtimeArgs": ["--prefix", "web", "run", "dev"],
+      "runtimeArgs": ["-c", "export OIKOS_API_TOKEN=$(docker inspect -f '{{range .Config.Env}}{{println .}}{{end}}' oikos-api-1 | sed -n 's/^OIKOS_MCP_BEARER_TOKEN=//p'); exec npm --prefix web run dev"],
       "port": 5173
     }
   ]

web/index.html

@@ -6,7 +6,7 @@
     <title>Oikos</title>
     <link rel="preconnect" href="https://fonts.googleapis.com" />
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
-    <link href="https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&family=Inknut+Antiqua:wght@300;400;500;600;700&display=swap" rel="stylesheet" />
+    <link href="https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&family=DM+Mono:ital,wght@0,300;0,400;0,500;1,300;1,400;1,500&family=Inknut+Antiqua:wght@300;400;500;600;700&display=swap" rel="stylesheet" />
     <link rel="icon" type="image/svg+xml" href="favicon.svg" />
     <link rel="apple-touch-icon" href="apple-touch-icon.png" />
     <link rel="icon" type="image/png" sizes="192x192" href="android-chrome-192.png" />

web/src/App.svelte

@@ -10,15 +10,14 @@
   import Config from './pages/Config.svelte'
   import { newChat } from '$lib/stores/chat'
   import { summary, subscribeContext, openSignalCount } from '$lib/stores/context'
-  import { connectionState } from '$lib/stores/events'
   import { currentTask } from '$lib/stores/workspace'
   import { isConfigured } from '$lib/config'
+  import { truncateMiddle } from '$lib/utils'
   import { onMount } from 'svelte'
   import { processPendingCallback, initOIDC } from '$lib/oidc'
   import * as Sidebar from '$lib/components/ui/sidebar'
   import * as Sheet from '$lib/components/ui/sheet'
   import { Button } from '$lib/components/ui/button'
-  import { Badge } from '$lib/components/ui/badge'
   import { Separator } from '$lib/components/ui/separator'
   import { VERSION } from '$lib/version'
   import { Toaster } from '$lib/components/ui/sonner'
@@ -206,37 +205,15 @@
       <Sidebar.Trigger class="-ms-1" />
       <Separator orientation="vertical" class="mx-2 data-[orientation=vertical]:h-4" />
       {#if page === 'chat'}
-        <button type="button" class="text-sm text-muted-foreground hover:text-foreground" onclick={() => navigate('overview')}>Tasks</button>
+        {@const goalText = $currentTask?.goal ? $currentTask.goal.replace(/[*_`~#]|\[.*?\]\(.*?\)/g, '') : 'New Task'}
-        <span class="text-muted-foreground">/</span>
+        <button type="button" class="shrink-0 text-sm text-muted-foreground hover:text-foreground" onclick={() => navigate('overview')}>Tasks</button>
-        <span class="text-base font-medium">
+        <span class="shrink-0 text-muted-foreground">/</span>
-          {$currentTask?.goal ? $currentTask.goal.replace(/[*_`~#]|\[.*?\]\(.*?\)/g, '') : 'New Task'}
+        <span class="min-w-0 flex-1 truncate text-base font-medium" title={goalText}>
+          {truncateMiddle(goalText, 100)}
         </span>
       {:else}
         <span class="text-base font-medium capitalize">{page === 'entity' ? routeParam : page === 'kb' ? 'Knowledge Base' : page === 'overview' ? 'Tasks' : page}</span>
       {/if}
-      <div class="ms-auto flex items-center gap-2.5">
-      {#if $summary}
-        <div class="hidden items-center gap-2.5 text-xs text-muted-foreground sm:flex">
-          <span class="flex items-center gap-1" title="healthy"><span class="size-2 rounded-full bg-success"></span>{$summary.health.healthy}</span>
-          <span class="flex items-center gap-1" title="degraded"><span class="size-2 rounded-full bg-warning"></span>{$summary.health.degraded}</span>
-          <span class="flex items-center gap-1" title="down"><span class="size-2 rounded-full bg-destructive"></span>{$summary.health.down}</span>
-        </div>
-        {#if approvalsPending}
-          <button type="button" onclick={() => navigate('ops')}>
-            <Badge variant="destructive" class="cursor-pointer">{approvalsPending} approval{approvalsPending === 1 ? '' : 's'}</Badge>
-          </button>
-        {/if}
-        {#if openSignals}
-          <button type="button" onclick={() => navigate('signals')}>
-            <Badge variant="secondary" class="cursor-pointer">{openSignals} signal{openSignals === 1 ? '' : 's'}</Badge>
-          </button>
-        {/if}
-      {/if}
-      <span
-        class="size-2 rounded-full {$connectionState === 'open' ? 'bg-success' : $connectionState === 'connecting' ? 'animate-pulse bg-warning' : 'bg-destructive'}"
-        title="event stream: {$connectionState}"
-      ></span>
-      </div>
     </header>
     <main class="min-h-0 flex-1 overflow-hidden">
       {#if page === 'overview'}

web/src/app.css

@@ -4,7 +4,7 @@
 
 @theme inline {
   --font-sans: 'DM Sans', system-ui, sans-serif;
-  --font-mono: 'DM Sans', system-ui, sans-serif;
+  --font-mono: 'DM Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
   --font-heading: 'Inknut Antiqua', Georgia, serif;
   --radius-sm: calc(var(--radius) - 4px);
   --radius-md: calc(var(--radius) - 2px);

web/src/lib/components/ActivityTimeline.svelte

@@ -1,9 +1,9 @@
 <script lang="ts">
   import { activityLog, type ActivityEntry } from '$lib/stores/activity'
-  import LoaderCircleIcon from '@lucide/svelte/icons/loader-circle'
+  import Spinner from './Spinner.svelte'
-  import CircleCheckIcon from '@lucide/svelte/icons/circle-check'
+  import CircleDotIcon from '@lucide/svelte/icons/circle-dot'
   import CircleXIcon from '@lucide/svelte/icons/circle-x'
-  import TargetIcon from '@lucide/svelte/icons/target'
+  import MilestoneIcon from '@lucide/svelte/icons/milestone'
   import ListTodoIcon from '@lucide/svelte/icons/list-todo'
   import SparklesIcon from '@lucide/svelte/icons/sparkles'
   import HelpCircleIcon from '@lucide/svelte/icons/help-circle'
@@ -22,7 +22,7 @@
 
   function typeIcon(type: ActivityEntry['type']) {
     switch (type) {
-      case 'goal': return TargetIcon
+      case 'goal': return MilestoneIcon
       case 'plan': return ListTodoIcon
       case 'step_running': case 'step_done': case 'step_failed':
       case 'tool_running': case 'tool_done': case 'tool_error':
@@ -36,29 +36,55 @@
   }
 
   function statusColor(status: ActivityEntry['status']) {
-    if (status === 'running') return 'text-primary'
     if (status === 'failed') return 'text-destructive'
-    return 'text-success'
+    return 'text-primary'
+  }
+
+  // Tool results often arrive as a JSON string — pretty-print it when it
+  // parses, otherwise fall back to the raw text rather than hiding it.
+  function prettyPrint(raw: string): string {
+    try {
+      return JSON.stringify(JSON.parse(raw), null, 2)
+    } catch {
+      return raw
+    }
+  }
+
+  function formatTime(ts: number): string | null {
+    if (!ts) return null
+    return new Date(ts).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit', second: '2-digit' })
   }
 </script>
 
 <div class="flex h-full flex-col">
   <div class="flex-1 overflow-y-auto">
     {#if $activityLog.length === 0}
-      <div class="flex flex-col items-center gap-2 px-3 py-6 text-center">
+      <div class="flex flex-col items-center gap-3 px-3 py-8 text-center">
-        <div class="flex items-center gap-0.5">
+        <svg viewBox="0 0 64 110" class="h-20 w-auto text-muted-foreground/40" fill="none">
-          <div class="size-1 rounded-full bg-muted-foreground/20 animate-pulse" style="animation-delay:0s" />
+          <line x1="32" y1="8" x2="32" y2="102" stroke="currentColor" stroke-width="1" stroke-dasharray="2.5 4" opacity="0.35" />
-          <div class="size-1 rounded-full bg-muted-foreground/30 animate-pulse" style="animation-delay:0.15s" />
+          <circle cx="32" cy="22" r="4" fill="currentColor">
-          <div class="size-1 rounded-full bg-muted-foreground/20 animate-pulse" style="animation-delay:0.3s" />
+            <animate attributeName="opacity" values="0.25;0.9;0.25" dur="2.4s" repeatCount="indefinite" />
-        </div>
+          </circle>
-        <p class="text-xs text-muted-foreground">Waiting for activity…</p>
+          <circle cx="32" cy="55" r="4" fill="currentColor">
+            <animate attributeName="opacity" values="0.25;0.9;0.25" dur="2.4s" begin="0.6s" repeatCount="indefinite" />
+          </circle>
+          <circle cx="32" cy="55" r="4" fill="none" stroke="currentColor" stroke-width="1.5">
+            <animate attributeName="r" values="4;11;4" dur="2.4s" begin="0.6s" repeatCount="indefinite" />
+            <animate attributeName="opacity" values="0.6;0;0.6" dur="2.4s" begin="0.6s" repeatCount="indefinite" />
+          </circle>
+          <circle cx="32" cy="88" r="4" fill="currentColor">
+            <animate attributeName="opacity" values="0.25;0.9;0.25" dur="2.4s" begin="1.2s" repeatCount="indefinite" />
+          </circle>
+        </svg>
+        <p class="max-w-[12rem] text-xs leading-relaxed text-muted-foreground">Waiting for activity…</p>
       </div>
     {:else}
       <div class="flex flex-col py-1">
         {#each $activityLog as entry, i (entry.id)}
           {@const isLast = i === $activityLog.length - 1}
-          {@const hasDetail = !!entry.detail}
           {@const icon = typeIcon(entry.type)}
+          {@const isOpen = expanded.has(entry.id)}
+          {@const time = formatTime(entry.timestamp)}
           <div class="relative">
             <!-- connector line -->
             {#if !isLast}
@@ -66,39 +92,56 @@
             {/if}
             <button
               type="button"
-              class="flex w-full items-start gap-2 {entry.indent ? 'pl-7' : 'px-3'} py-1.5 text-left text-xs hover:bg-muted/30 {hasDetail ? 'cursor-pointer' : 'cursor-default'}"
+              class="flex w-full items-start gap-2 {entry.indent ? 'pl-7' : 'px-3'} py-1.5 text-left text-xs hover:bg-muted/30 cursor-pointer"
-              onclick={() => hasDetail && toggle(entry.id)}
+              onclick={() => toggle(entry.id)}
             >
               <!-- status icon -->
               <span class="relative mt-0.5 flex size-3.5 shrink-0 items-center justify-center rounded-full {statusColor(entry.status)}">
                 {#if entry.status === 'running'}
-                  <LoaderCircleIcon class="size-3.5 animate-spin" />
+                  <Spinner class="size-3.5" />
                 {:else if entry.status === 'failed'}
                   <CircleXIcon class="size-3.5" />
                 {:else if icon}
                   <svelte:component this={icon} class="size-3" />
                 {:else}
-                  <CircleCheckIcon class="size-3" />
+                  <CircleDotIcon class="size-3" />
                 {/if}
               </span>
               <!-- description -->
               <span class="min-w-0 flex-1 leading-snug {entry.status === 'done' ? 'text-muted-foreground' : ''}">
                 {entry.description}
               </span>
-              {#if hasDetail}
               <span class="mt-0.5 shrink-0 text-muted-foreground">
-                  {#if expanded.has(entry.id)}
+                {#if isOpen}
                   <ChevronDownIcon class="size-3" />
                 {:else}
                   <ChevronRightIcon class="size-3" />
                 {/if}
               </span>
-              {/if}
             </button>
-            <!-- detail (collapsed) -->
+            <!-- detail -->
-            {#if hasDetail && expanded.has(entry.id)}
+            {#if isOpen}
-              <div class="pl-8 pr-3 pb-1">
+              <div class="flex flex-col gap-1.5 pl-8 pr-3 pb-2">
-                <pre class="whitespace-pre-wrap break-all rounded bg-muted/50 p-2 font-mono text-[10px] text-muted-foreground">{entry.detail}</pre>
+                <div class="flex items-center gap-2 text-[10px] text-muted-foreground">
+                  <span class="capitalize">{entry.status}</span>
+                  {#if time}<span aria-hidden="true">·</span><span>{time}</span>{/if}
+                  {#if entry.toolName}<span aria-hidden="true">·</span><code class="font-mono">{entry.toolName}</code>{/if}
+                </div>
+                {#if entry.args}
+                  <div>
+                    <p class="mb-0.5 text-[10px] font-medium uppercase tracking-wide text-muted-foreground/70">Called with</p>
+                    <pre class="overflow-x-auto whitespace-pre-wrap break-words rounded bg-muted/50 p-2 font-mono text-[10px] leading-relaxed text-muted-foreground">{prettyPrint(entry.args)}</pre>
+                  </div>
+                {/if}
+                {#if entry.detail}
+                  <div>
+                    {#if entry.args}<p class="mb-0.5 text-[10px] font-medium uppercase tracking-wide text-muted-foreground/70">{entry.status === 'failed' ? 'Error' : 'Result'}</p>{/if}
+                    <pre class="overflow-x-auto whitespace-pre-wrap break-words rounded bg-muted/50 p-2 font-mono text-[10px] leading-relaxed text-muted-foreground">{prettyPrint(entry.detail)}</pre>
+                  </div>
+                {/if}
+                {#if !entry.args && !entry.detail}
+                  <p class="text-[10px] text-muted-foreground/70">No further detail for this step.</p>
+                {/if}
               </div>
             {/if}
           </div>

web/src/lib/components/AgentIndicator.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
   import type { ActivityEntry } from '$lib/stores/activity'
-  import LoaderCircleIcon from '@lucide/svelte/icons/loader-circle'
+  import Spinner from './Spinner.svelte'
   import CheckIcon from '@lucide/svelte/icons/check'
   import XIcon from '@lucide/svelte/icons/x'
 
@@ -34,7 +34,7 @@
       {:else if done}
         <CheckIcon class="size-3" />
       {:else}
-        <LoaderCircleIcon class="size-3 animate-spin text-primary" />
+        <Spinner class="size-3 text-primary" />
       {/if}
     </span>
     <span>{label}</span>

web/src/lib/components/InlineApproval.svelte

@@ -6,7 +6,7 @@
   import CheckIcon from '@lucide/svelte/icons/check'
   import XIcon from '@lucide/svelte/icons/x'
   import ShieldCheckIcon from '@lucide/svelte/icons/shield-check'
-  import LoaderCircleIcon from '@lucide/svelte/icons/loader-circle'
+  import Spinner from './Spinner.svelte'
   import NetworkIcon from '@lucide/svelte/icons/network'
 
   let { approvals }: { approvals: PendingApproval[] } = $props()
@@ -178,7 +178,7 @@
     {@const secs = elapsedSeconds(e)}
     <div class="my-2 flex flex-col gap-1 rounded-lg border border-warning/40 bg-warning/5 px-3 py-2 text-xs text-muted-foreground">
       <div class="flex items-center gap-2">
-        <LoaderCircleIcon class="size-4 shrink-0 animate-spin text-warning" />
+        <Spinner class="size-4 shrink-0 text-warning" />
         <span>
           {#if p === 'deciding'}
             Submitting approval…

web/src/lib/components/PlanProgress.svelte

@@ -2,7 +2,7 @@
   import { planSteps } from '$lib/stores/workspace'
   import EntitySheet from '$lib/components/EntitySheet.svelte'
   import CircleIcon from '@lucide/svelte/icons/circle'
-  import LoaderCircleIcon from '@lucide/svelte/icons/loader-circle'
+  import Spinner from './Spinner.svelte'
   import CircleCheckIcon from '@lucide/svelte/icons/circle-check'
   import CircleXIcon from '@lucide/svelte/icons/circle-x'
   import CircleSlashIcon from '@lucide/svelte/icons/circle-slash'
@@ -87,7 +87,7 @@
                   {:else if step.status === 'failed'}
                     <CircleXIcon class="size-3.5 text-destructive" />
                   {:else if step.status === 'running'}
-                    <LoaderCircleIcon class="size-3.5 animate-spin text-primary" />
+                    <Spinner class="size-3.5 text-primary" />
                   {:else if step.status === 'skipped' || step.status === 'replaced'}
                     <CircleSlashIcon class="size-3.5 text-muted-foreground" />
                   {:else if step.status === 'blocked'}

web/src/lib/components/SessionDigest.svelte

@@ -9,7 +9,7 @@
   import CircleCheckIcon from '@lucide/svelte/icons/circle-check'
   import CircleXIcon from '@lucide/svelte/icons/circle-x'
   import CircleIcon from '@lucide/svelte/icons/circle'
-  import LoaderCircleIcon from '@lucide/svelte/icons/loader-circle'
+  import Spinner from './Spinner.svelte'
   import WrenchIcon from '@lucide/svelte/icons/wrench'
 
   let digest = $state<SessionDigest | null>(null)
@@ -76,7 +76,7 @@
 
 {#if $streaming && $currentSession}
   <div class="flex items-center gap-2 border-b px-3 py-2 text-xs text-muted-foreground">
-    <LoaderCircleIcon class="size-3 shrink-0 animate-spin text-primary" />
+    <Spinner class="size-3 shrink-0 text-primary" />
     <span>{toolCount} tool{toolCount === 1 ? '' : 's'} · {runningCount} running</span>
   </div>
 {/if}
@@ -114,7 +114,7 @@
             {#if step.status === 'done'}
               <CircleCheckIcon class="size-3 text-success" />
             {:else if step.status === 'running'}
-              <LoaderCircleIcon class="size-3 animate-spin text-primary" />
+              <Spinner class="size-3 text-primary" />
             {:else if step.status === 'failed'}
               <CircleXIcon class="size-3 text-destructive" />
             {:else}
@@ -155,7 +155,7 @@
                   {:else if t.type === 'tool_result'}
                     <CircleCheckIcon class="size-3 text-success" />
                   {:else}
-                    <LoaderCircleIcon class="size-3 animate-spin text-primary" />
+                    <Spinner class="size-3 text-primary" />
                   {/if}
                 </span>
                 <span class="font-mono text-[10px] truncate">{toolSummary(t)}</span>

web/src/lib/components/SessionGraph.svelte

@@ -18,6 +18,7 @@
   import { Button } from '$lib/components/ui/button'
   import EntitySheet from '$lib/components/EntitySheet.svelte'
   import ExternalLinkIcon from '@lucide/svelte/icons/external-link'
+  import XIcon from '@lucide/svelte/icons/x'
 
   interface Node extends Entity {
     x?: number
@@ -65,6 +66,14 @@
   let cw = $state(300)
   let ch = $state(300)
 
+  // This component sits INSIDE one of TaskContextPanel's own resizable slots
+  // (Scope), so — unlike a top-level section — its total budget can change at
+  // any time from outside (dragging the outer Scope/Plan handle), including
+  // while the detail panel below is open. asideHeight tracks that live budget
+  // so detailHeight can self-clamp to it instead of trusting a one-time seed.
+  let asideEl = $state<HTMLElement | null>(null)
+  let asideHeight = $state(300)
+
   function collectSlugs(value: unknown, out: Set<string>) {
     if (typeof value === 'string') {
       const m = value.match(SLUG_RE)
@@ -208,6 +217,15 @@
     return () => ro.disconnect()
   })
 
+  $effect(() => {
+    if (!asideEl) return
+    const ro = new ResizeObserver((entries) => {
+      asideHeight = Math.max(entries[0].contentRect.height, 1)
+    })
+    ro.observe(asideEl)
+    return () => ro.disconnect()
+  })
+
   onDestroy(() => sim?.stop())
 
   const healthColor: Record<string, string> = {
@@ -249,6 +267,51 @@
     return typeof end === 'object' ? end.slug : end
   }
 
+  // ─── graph / detail resize ───────────────────────────────────────────
+  // Same drag handle, same feel as TaskContextPanel's Scope/Plan/Activity
+  // split — but the graph side stays flex-1 (always auto-fills whatever's
+  // left) rather than tracking its own pixel number. Only detailHeight is
+  // explicit, and it's continuously clamped against asideHeight (this
+  // component's actual live budget) rather than a value seeded once — so
+  // resizing the OUTER Scope section while the detail panel is open can't
+  // push this panel past its container the way a one-time seed could.
+  const MIN_GRAPH = 80
+  const MIN_DETAIL = 80
+  const HANDLE = 6
+
+  let detailHeight = $state(200)
+  let resizing = $state(false)
+  let resizeStartY = $state(0)
+  let resizeStartH = $state(0)
+
+  function maxDetailHeight(): number {
+    return Math.max(MIN_DETAIL, asideHeight - MIN_GRAPH - HANDLE)
+  }
+
+  $effect(() => {
+    const max = maxDetailHeight()
+    if (detailHeight > max) detailHeight = max
+  })
+
+  function onPointerDown(e: PointerEvent) {
+    e.preventDefault()
+    resizing = true
+    resizeStartY = e.clientY
+    resizeStartH = detailHeight
+    window.addEventListener('pointermove', onPointerMove)
+    window.addEventListener('pointerup', onPointerUp)
+  }
+  function onPointerMove(e: PointerEvent) {
+    if (!resizing) return
+    const dy = e.clientY - resizeStartY
+    detailHeight = Math.min(maxDetailHeight(), Math.max(MIN_DETAIL, resizeStartH - dy))
+  }
+  function onPointerUp() {
+    resizing = false
+    window.removeEventListener('pointermove', onPointerMove)
+    window.removeEventListener('pointerup', onPointerUp)
+  }
+
   // ─── drag / select ───────────────────────────────────────────────────
   let dragState: { node: Node; moved: boolean } | null = null
 
@@ -278,7 +341,15 @@
     node.fy = null
     sim?.alphaTarget(0)
     dragState = null
-    if (!moved) selected = selected?.slug === node.slug ? null : node
+    if (!moved) {
+      const wasNull = selected === null
+      const next = selected?.slug === node.slug ? null : node
+      // A reasonable starting size on first open — the clamp effect above
+      // keeps it honest against the live container size from here on, so
+      // this doesn't need to be exact.
+      if (next && wasNull) detailHeight = Math.min(maxDetailHeight(), Math.round(ch * 0.45))
+      selected = next
+    }
   }
 
   const selectedRelations = $derived(
@@ -299,7 +370,7 @@
   }
 </script>
 
-<aside class="flex h-full min-h-0 flex-col bg-card/40">
+<aside bind:this={asideEl} class="flex h-full min-h-0 flex-col bg-card/40">
   {#if nowTouching}
     <div class="flex shrink-0 items-center gap-1.5 border-b bg-primary/5 px-3 py-1.5 text-[11px] text-primary">
       <span class="size-1.5 animate-pulse rounded-full bg-primary"></span>
@@ -431,11 +502,26 @@
   </div>
 
   {#if selected}
-    <div class="max-h-[55%] shrink-0 space-y-3 overflow-y-auto border-t p-3 text-xs">
+    <!-- resize handle -->
+    <div
+      class="h-1.5 shrink-0 cursor-row-resize border-b hover:bg-primary/30 touch-none"
+      onpointerdown={onPointerDown}
+      role="separator"
+      aria-orientation="horizontal"
+    ></div>
+    <div class="shrink-0 space-y-3 overflow-y-auto p-3 text-xs" style="height: {detailHeight}px">
       <div class="flex flex-wrap items-center gap-1.5">
-        <span class="font-mono text-sm font-semibold">{selected.slug}</span>
+        <span class="min-w-0 flex-1 truncate font-mono text-sm font-semibold">{selected.slug}</span>
         <Badge variant="outline">{selected.type}</Badge>
         {#if selected.state}<Badge variant="secondary">{selected.state}</Badge>{/if}
+        <button
+          type="button"
+          class="shrink-0 rounded p-0.5 text-muted-foreground hover:bg-muted hover:text-foreground"
+          onclick={() => (selected = null)}
+          aria-label="Close entity detail"
+        >
+          <XIcon class="size-3.5" />
+        </button>
       </div>
       {#if selected.health}
         <div class="flex items-center gap-1.5 text-muted-foreground">

web/src/lib/components/SessionRail.svelte

@@ -1,80 +0,0 @@
-<script lang="ts">
-  import { onMount } from 'svelte'
-  import { sessions, currentSession, loadSessions, loadSessionMessages, newChat, deleteSession } from '$lib/stores/chat'
-  import { relativeTime } from '$lib/utils'
-  import { Button } from '$lib/components/ui/button'
-  import { ScrollArea } from '$lib/components/ui/scroll-area'
-  import PlusIcon from '@lucide/svelte/icons/plus'
-  import Trash2Icon from '@lucide/svelte/icons/trash-2'
-
-  onMount(() => {
-    loadSessions()
-  })
-
-  $effect(() => {
-    void $currentSession
-    loadSessions()
-  })
-
-  let confirmDelete = $state<string | null>(null)
-
-  function handleDelete(e: MouseEvent, id: string) {
-    e.stopPropagation()
-    if (confirmDelete === id) {
-      deleteSession(id)
-      confirmDelete = null
-    } else {
-      confirmDelete = id
-      // Hide confirmation after 3s
-      setTimeout(() => { if (confirmDelete === id) confirmDelete = null }, 3000)
-    }
-  }
-
-  function handleClick(sessionId: string) {
-    confirmDelete = null
-    loadSessionMessages(sessionId)
-  }
-</script>
-
-<aside class="flex h-full w-56 shrink-0 flex-col gap-2 overflow-y-auto border-r bg-card/50 p-2">
-  <Button variant="outline" size="sm" class="justify-start gap-2" onclick={() => newChat()}>
-    <PlusIcon class="size-3.5" />
-    New Task
-  </Button>
-  <ScrollArea class="min-h-0 flex-1">
-    <div class="flex flex-col gap-1 pr-2">
-      {#each $sessions as session (session.id)}
-        <div class="group relative">
-          <button
-            type="button"
-            class="flex w-full flex-col items-start gap-0.5 rounded-md border py-1.5 pl-2 pr-7 text-left text-xs transition-colors hover:bg-muted/60 {$currentSession === session.id ? 'border-primary bg-muted/50' : 'border-transparent'}"
-            onclick={() => handleClick(session.id)}
-          >
-            <span class="min-w-0 max-w-full truncate font-medium">{session.title || 'Untitled'}</span>
-            <span class="flex items-center gap-1.5 text-[11px] text-muted-foreground">
-              {relativeTime(session.last_active_at)}
-              {#if session.pending_approvals}
-                <span class="rounded bg-warning/20 px-1 text-[10px] font-medium text-warning">{session.pending_approvals}</span>
-              {/if}
-            </span>
-          </button>
-          <button
-            type="button"
-            class="absolute right-1 top-1.5 shrink-0 rounded p-0.5 opacity-0 transition-opacity group-hover:opacity-100 focus-visible:opacity-100 hover:bg-destructive/20 hover:text-destructive"
-            onclick={(e) => handleDelete(e, session.id)}
-            aria-label={confirmDelete === session.id ? 'Click again to confirm delete' : 'Delete session'}
-            title={confirmDelete === session.id ? 'Click again to confirm delete' : 'Delete session'}
-          >
-            {#if confirmDelete === session.id}
-              <span class="text-[10px] font-semibold text-destructive">Sure?</span>
-            {:else}
-              <Trash2Icon class="size-3" />
-            {/if}
-          </button>
-        </div>
-      {:else}
-        <p class="px-2 py-4 text-center text-xs text-muted-foreground">No sessions yet.</p>
-      {/each}
-    </div>
-  </ScrollArea>
-</aside>

web/src/lib/components/Spinner.svelte

@@ -0,0 +1,30 @@
+<script lang="ts">
+  // A fading-blade spinner rather than a rotating arc — rotating a single
+  // thin stroke via CSS transform reads as jittery at icon sizes (the arc's
+  // sub-pixel edges shimmer each frame). Cycling opacity across fixed blades
+  // avoids that entirely and is how native OS spinners do it.
+  let { class: className = '' }: { class?: string } = $props()
+
+  const TICKS = 8
+  const DUR = 0.9
+</script>
+
+<svg viewBox="0 0 24 24" class={className} fill="none" aria-hidden="true">
+  {#each Array.from({ length: TICKS }) as _, i (i)}
+    <rect
+      x="11" y="1.5" width="2" height="6" rx="1"
+      fill="currentColor"
+      opacity="0.15"
+      transform="rotate({i * (360 / TICKS)} 12 12)"
+    >
+      <animate
+        attributeName="opacity"
+        values="1;0.15"
+        keyTimes="0;1"
+        dur="{DUR}s"
+        begin="{-(i * (DUR / TICKS)).toFixed(3)}s"
+        repeatCount="indefinite"
+      />
+    </rect>
+  {/each}
+</svg>

web/src/lib/components/TaskContextPanel.svelte

@@ -8,8 +8,13 @@
   import ActivityTimeline from './ActivityTimeline.svelte'
   import ChevronDownIcon from '@lucide/svelte/icons/chevron-down'
   import ChevronRightIcon from '@lucide/svelte/icons/chevron-right'
-  import TargetIcon from '@lucide/svelte/icons/target'
+  import MilestoneIcon from '@lucide/svelte/icons/milestone'
-  import LoaderCircleIcon from '@lucide/svelte/icons/loader-circle'
+  import Spinner from './Spinner.svelte'
+  import CircleIcon from '@lucide/svelte/icons/circle'
+  import CircleCheckIcon from '@lucide/svelte/icons/circle-check'
+  import CircleXIcon from '@lucide/svelte/icons/circle-x'
+  import CircleSlashIcon from '@lucide/svelte/icons/circle-slash'
+  import CirclePauseIcon from '@lucide/svelte/icons/circle-pause'
 
   onMount(() => startWorkspace())
 
@@ -55,6 +60,18 @@
   // Plan collapsed status
   const planDone = $derived($planSteps.filter((s) => s.status === 'done').length)
   const planTotal = $derived($planSteps.length)
+  const planPct = $derived(planTotal > 0 ? Math.round((planDone / planTotal) * 100) : 0)
+
+  // When there are no plan steps, the empty state depends on WHY: a task that's
+  // actively planning (or streaming its first turn) is genuinely waiting for one,
+  // but a finished task that never planned (a read-only lookup, a direct answer)
+  // will never get one — a perpetual "Awaiting plan…" there is misleading.
+  const planPhase = $derived.by<'drafting' | 'none' | 'idle'>(() => {
+    const st = $currentTask?.status
+    if (st === 'done' || st === 'failed' || st === 'abandoned') return 'none'
+    if (st === 'planning' || $streaming) return 'drafting'
+    return 'idle'
+  })
 
   // Activity collapsed status
   const activityRunning = $derived($activityLog.filter((e) => e.status === 'running').length)
@@ -113,44 +130,95 @@
     {#if planOpen}
       <div style="height: {heights[1]}px" class="flex flex-col overflow-y-auto">
         {#if $currentTask?.goal}
-          <div class="flex items-center gap-1.5 px-3 py-1.5 text-xs">
+          <div class="flex items-start gap-2 px-3 py-2">
-            <TargetIcon class="size-3 shrink-0 text-muted-foreground" />
+            <MilestoneIcon class="mt-0.5 size-3 shrink-0 text-primary" />
-            <span class="truncate text-muted-foreground">{$currentTask.goal}</span>
+            <span class="text-xs leading-snug text-foreground/90">{$currentTask.goal}</span>
           </div>
         {/if}
         {#if planTotal > 0}
-          <div class="flex items-center justify-between px-3 pb-1 text-[11px] text-muted-foreground">
+          <div class="px-3 pb-2.5">
-            <span>{planDone}/{planTotal} done</span>
+            <div class="mb-1.5 flex items-baseline justify-between text-[11px]">
+              <span class="font-medium text-foreground">{planDone} of {planTotal} done</span>
+              <span class="tabular-nums text-muted-foreground">{planPct}%</span>
             </div>
-          <div class="mx-3 h-1 rounded-full bg-muted">
+            <div class="h-1.5 overflow-hidden rounded-full bg-muted">
-            <div class="h-full rounded-full bg-primary transition-all duration-500" style="width: {planTotal > 0 ? Math.round((planDone / planTotal) * 100) : 0}%"></div>
+              <div class="h-full rounded-full bg-primary transition-all duration-500 ease-out" style="width: {planPct}%"></div>
             </div>
-          <ol class="flex flex-col gap-0.5 overflow-y-auto px-3 py-1 text-[11px]">
+          </div>
-            {#each $planSteps as step (step.id)}
+          <ol class="flex flex-col overflow-y-auto px-2 pb-2 text-[11px]">
-              <li class="flex items-start gap-1.5 {step.status === 'done' ? 'text-muted-foreground line-through decoration-muted-foreground/40' : ''}">
+            {#each $planSteps as step, i (step.id)}
-                <span class="mt-0.5 shrink-0">
+              {@const isDone = step.status === 'done'}
-                  {#if step.status === 'done'}
+              {@const isRunning = step.status === 'running'}
-                    <div class="size-2 rounded-full bg-success" />
+              <li class="relative flex items-start gap-2.5 rounded-md px-2 py-1.5 transition-colors {isRunning ? 'bg-primary/5' : ''}">
-                  {:else if step.status === 'running'}
+                {#if i < $planSteps.length - 1}
-                    <LoaderCircleIcon class="size-2.5 animate-spin text-primary" />
+                  <span class="pointer-events-none absolute bottom-[-2px] left-[13.5px] top-[22px] w-px bg-border" aria-hidden="true"></span>
+                {/if}
+                <span class="relative z-10 mt-px flex size-3.5 shrink-0 items-center justify-center rounded-full bg-background">
+                  {#if isDone}
+                    <CircleCheckIcon class="size-3.5 text-primary" />
+                  {:else if isRunning}
+                    <Spinner class="size-3.5 text-primary" />
                   {:else if step.status === 'failed'}
-                    <div class="size-2 rounded-full bg-destructive" />
+                    <CircleXIcon class="size-3.5 text-destructive" />
+                  {:else if step.status === 'blocked'}
+                    <CirclePauseIcon class="size-3.5 text-warning" />
+                  {:else if step.status === 'skipped' || step.status === 'replaced'}
+                    <CircleSlashIcon class="size-3.5 text-muted-foreground" />
                   {:else}
-                    <div class="size-2 rounded-full bg-muted-foreground/30" />
+                    <CircleIcon class="size-3.5 text-muted-foreground/40" />
                   {/if}
                 </span>
-                <span class="leading-tight">{step.title}</span>
+                <span
+                  class="min-w-0 flex-1 leading-snug {isDone
+                    ? 'text-muted-foreground line-through decoration-muted-foreground/40'
+                    : isRunning
+                      ? 'font-medium text-foreground'
+                      : 'text-muted-foreground'}"
+                >{step.title}</span>
               </li>
             {/each}
           </ol>
-        {:else}
+        {:else if planPhase === 'drafting'}
-          <div class="flex flex-col items-center gap-2 px-3 py-6 text-center">
+          <div class="flex flex-col items-center gap-3 px-3 py-6 text-center">
-            <div class="flex gap-1">
+            <svg viewBox="0 0 140 88" class="h-16 w-auto text-primary" fill="none">
-              <div class="size-1.5 rounded-full bg-muted-foreground/20" />
+              <g stroke="currentColor" stroke-width="1.5" stroke-linecap="round">
-              <div class="size-1.5 rounded-full bg-muted-foreground/30" />
+                <circle cx="16" cy="20" r="4.5" fill="currentColor">
-              <div class="size-1.5 rounded-full bg-muted-foreground/20" />
+                  <animate attributeName="opacity" values="0.35;1;0.35" dur="1.3s" repeatCount="indefinite" />
+                </circle>
+                <line x1="30" y1="20" x2="124" y2="20" opacity="0.4">
+                  <animate attributeName="opacity" values="0.15;0.5;0.15" dur="1.3s" repeatCount="indefinite" />
+                </line>
+                <circle cx="16" cy="44" r="4.5" fill="currentColor">
+                  <animate attributeName="opacity" values="0.35;1;0.35" dur="1.3s" begin="0.25s" repeatCount="indefinite" />
+                </circle>
+                <line x1="30" y1="44" x2="102" y2="44" opacity="0.4">
+                  <animate attributeName="opacity" values="0.15;0.5;0.15" dur="1.3s" begin="0.25s" repeatCount="indefinite" />
+                </line>
+                <circle cx="16" cy="68" r="4.5" fill="currentColor">
+                  <animate attributeName="opacity" values="0.35;1;0.35" dur="1.3s" begin="0.5s" repeatCount="indefinite" />
+                </circle>
+                <line x1="30" y1="68" x2="80" y2="68" opacity="0.4">
+                  <animate attributeName="opacity" values="0.15;0.5;0.15" dur="1.3s" begin="0.5s" repeatCount="indefinite" />
+                </line>
+              </g>
+            </svg>
+            <p class="text-xs text-muted-foreground">Drafting a plan…</p>
           </div>
-            <p class="text-xs text-muted-foreground">Awaiting plan…</p>
+        {:else}
+          <div class="flex flex-col items-center gap-3 px-3 py-6 text-center">
+            <svg viewBox="0 0 140 88" class="h-16 w-auto text-muted-foreground/40" fill="none">
+              <g stroke="currentColor" stroke-width="1.5" stroke-linecap="round">
+                <circle cx="16" cy="20" r="4.5" fill="currentColor" opacity="0.7" />
+                <line x1="30" y1="20" x2="124" y2="20" opacity="0.35" />
+                <circle cx="16" cy="44" r="4.5" fill="currentColor" opacity="0.45" />
+                <line x1="30" y1="44" x2="102" y2="44" opacity="0.25" />
+                <circle cx="16" cy="68" r="4.5" fill="none" opacity="0.3" />
+                <line x1="30" y1="68" x2="80" y2="68" opacity="0.15" stroke-dasharray="2.5 3.5" />
+              </g>
+            </svg>
+            <p class="max-w-[14rem] text-xs leading-relaxed text-muted-foreground">
+              {planPhase === 'none' ? 'Handled directly — no plan needed' : 'No plan for this task yet'}
+            </p>
           </div>
         {/if}
       </div>
@@ -172,10 +240,10 @@
       onclick={() => (activityOpen = !activityOpen)}
     >
       {#if activityOpen}<ChevronDownIcon class="size-3" />{:else}<ChevronRightIcon class="size-3" />{/if}
-      <span>Activity</span>
+      <span>Event log</span>
       {#if !activityOpen}
         {#if $streaming && activityRunning > 0}
-          <LoaderCircleIcon class="size-3 animate-spin text-primary" />
+          <Spinner class="size-3 text-primary" />
           <span class="font-normal normal-case text-primary">{activityRunning} running</span>
         {:else}
           <span class="ml-auto font-normal normal-case">{activityCount || '—'} action{activityCount === 1 ? '' : 's'}</span>

web/src/lib/components/ToolCallGroup.svelte

@@ -4,7 +4,7 @@
   import CheckIcon from '@lucide/svelte/icons/check'
   import XIcon from '@lucide/svelte/icons/x'
   import ChevronDownIcon from '@lucide/svelte/icons/chevron-down'
-  import LoaderCircleIcon from '@lucide/svelte/icons/loader-circle'
+  import Spinner from './Spinner.svelte'
 
   let { tools, unmatched, active = false }: { tools: ToolCallResult[]; unmatched?: ToolCallResult[]; active?: boolean } = $props()
 
@@ -41,7 +41,7 @@
     <Collapsible.Trigger class="flex w-full cursor-pointer select-none items-center gap-1.5 px-2 py-1 hover:bg-muted/30">
       <span class="shrink-0">
         {#if active && doneCount < total}
-          <LoaderCircleIcon class="size-3 animate-spin text-primary" aria-hidden="true" />
+          <Spinner class="size-3 text-primary" />
         {:else if hasError}
           <XIcon class="size-3 text-destructive" aria-hidden="true" />
         {:else}
@@ -79,7 +79,7 @@
             {:else if tool.type === 'tool_result'}
               <CheckIcon class="size-3 shrink-0 text-success" />
             {:else}
-              <LoaderCircleIcon class="size-3 shrink-0 animate-spin text-primary" />
+              <Spinner class="size-3 shrink-0 text-primary" />
             {/if}
             <span class="font-mono text-[11px] truncate">{toolLabel(tool)}</span>
           </div>

web/src/lib/stores/activity.ts

@@ -12,6 +12,7 @@ export interface ActivityEntry {
         'approval'
   description: string
   detail?: string
+  args?: string
   timestamp: number
   toolName?: string
   stepSeq?: number
@@ -19,6 +20,26 @@ export interface ActivityEntry {
   status: 'running' | 'done' | 'failed'
 }
 
+// Detail text is kept full-length (not hard-truncated to a preview snippet)
+// so the expanded view has something worth pretty-printing — capped only as
+// a safety net against pathological payloads (a full fleet dump, etc).
+const DETAIL_MAX = 8000
+
+function summarizeArgs(args: unknown): string | undefined {
+  if (!args || typeof args !== 'object' || Array.isArray(args)) return undefined
+  if (Object.keys(args).length === 0) return undefined
+  try {
+    return JSON.stringify(args)
+  } catch {
+    return undefined
+  }
+}
+
+function stringifyResult(result: unknown): string {
+  const s = typeof result === 'string' ? result : JSON.stringify(result ?? '')
+  return s.length > DETAIL_MAX ? `${s.slice(0, DETAIL_MAX)}\n… truncated` : s
+}
+
 export const activityLog = derived([messages, planSteps, currentTask], ([$msgs, $steps, $task]) => {
   const entries: ActivityEntry[] = []
   const now = Date.now()
@@ -64,6 +85,7 @@ export const activityLog = derived([messages, planSteps, currentTask], ([$msgs,
           id: t.id ?? `tool_${mi}_${entryIdx++}`,
           type: 'tool_running',
           description: label,
+          args: summarizeArgs(t.args),
           timestamp: now - ($msgs.length - mi) * 1000,
           toolName: t.name,
           stepSeq: stepTag,
@@ -77,19 +99,25 @@ export const activityLog = derived([messages, planSteps, currentTask], ([$msgs,
         if (running && t.error) {
           running.type = 'tool_error'
           running.status = 'failed'
-          running.description = `${t.name}: ${t.error.slice(0, 80)}`
+          running.description = `${label}: ${t.error.slice(0, 80)}`
+          running.detail = t.error
         } else if (running) {
           running.type = 'tool_done'
           running.status = 'done'
-          running.detail = typeof t.result === 'string'
+          running.detail = stringifyResult(t.result)
-            ? t.result.slice(0, 200)
-            : JSON.stringify(t.result ?? '').slice(0, 200)
         } else {
+          // Historical/persisted tool calls arrive as one merged record (args
+          // + result on the same object, see mergeToolCalls in chat.ts) rather
+          // than a separate tool_use/tool_result pair — there's never a
+          // "running" entry to attach to, so this branch has to build the
+          // full entry itself. It used to fall back to the raw tool name
+          // (e.g. "get_entity") instead of the humanized label here.
           entries.push({
             id: t.id ?? `tool_${mi}_${entryIdx++}`,
             type: t.error ? 'tool_error' : 'tool_done',
-            description: t.error ? `${t.name}: ${t.error.slice(0, 80)}` : t.name,
+            description: t.error ? `${label}: ${t.error.slice(0, 80)}` : label,
-            detail: !t.error ? (typeof t.result === 'string' ? t.result.slice(0, 200) : '') : undefined,
+            detail: t.error ? t.error : stringifyResult(t.result),
+            args: summarizeArgs(t.args),
             timestamp: now - ($msgs.length - mi) * 1000,
             toolName: t.name,
             stepSeq: stepTag,
@@ -181,6 +209,8 @@ function toolActivityLabel(t: ToolCallResult): string {
     case 'complete_task': return 'Complete task'
     case 'ping_service': return 'Check service'
     case 'ask_operator': return 'Ask operator'
-    default: return t.name
+    // Unmapped tool (new/uncommon) — humanize the raw name rather than
+    // showing it verbatim, e.g. "revoke_execution" -> "Revoke execution".
+    default: return t.name.replace(/_/g, ' ').replace(/^./, (c) => c.toUpperCase())
   }
 }

web/src/pages/Chat.svelte

@@ -1,7 +1,6 @@
 <script lang="ts">
   import { messages, streaming, connectionState, currentSession, sendMessage, cancelStream, reconnect, error, chatErrors, dismissError } from '$lib/stores/chat'
   import { activityLog } from '$lib/stores/activity'
-  import SessionRail from '$lib/components/SessionRail.svelte'
   import TaskContextPanel from '$lib/components/TaskContextPanel.svelte'
   import InlineApproval from '$lib/components/InlineApproval.svelte'
   import AgentIndicator from '$lib/components/AgentIndicator.svelte'
@@ -105,11 +104,6 @@
 </script>
 
 <div class="flex h-full min-h-0">
-  {#if showRail}
-    <div class="hidden md:block">
-      <SessionRail />
-    </div>
-  {/if}
   <div class="flex min-w-0 flex-1 flex-col">
     <div class="min-h-0 flex-1 overflow-y-auto" bind:this={container} onscroll={onScroll}>
       <div class="mx-auto flex max-w-3xl flex-col gap-5 p-4">
@@ -247,18 +241,14 @@
 <style>
   /* ── Art Nouveau chat styling ── */
 
-  /* Assistant message wrapper — ornamental frame */
+  /* Assistant message wrapper */
   .assistant-msg {
     position: relative;
-    border-left: 2px solid var(--primary);
-    border-image: linear-gradient(to bottom, var(--primary), transparent 80%) 1;
-    padding-left: 1rem;
   }
 
-  /* User message — softened bubble with inner glow */
+  /* User message — soft terracotta bubble, gentle lift */
   .user-msg {
-    box-shadow: 0 0 12px -4px var(--primary);
+    box-shadow: 0 1px 8px -4px var(--primary);
-    border: 1px solid var(--primary);
   }
 
   /* Prose overrides */
@@ -325,24 +315,32 @@
     border: none;
   }
 
+  /* Section headings — serif (Inknut) with a short accent rule. Extra top
+     margin separates sections; the first heading in a message doesn't. */
   .prose-chat :global(h1),
   .prose-chat :global(h2),
   .prose-chat :global(h3) {
     font-weight: 600;
-    margin: 0.75rem 0 0.375rem;
+    margin: 1.15rem 0 0.4rem;
-    font-size: 1em;
+    font-size: 1.03em;
+    letter-spacing: 0.01em;
     position: relative;
     display: inline-block;
   }
+  .prose-chat :global(:first-child):is(h1, h2, h3) {
+    margin-top: 0;
+  }
   .prose-chat :global(h1)::after,
   .prose-chat :global(h2)::after,
   .prose-chat :global(h3)::after {
     content: '';
     display: block;
-    height: 1px;
+    width: 2.5rem;
-    margin-top: 2px;
+    height: 2px;
+    margin-top: 4px;
+    border-radius: 1px;
     background: linear-gradient(to right, var(--primary), transparent);
-    opacity: 0.5;
+    opacity: 0.55;
   }
 
   .prose-chat :global(table) {
@@ -388,8 +386,11 @@
     background: linear-gradient(to right, transparent, var(--border) 20%, var(--border) 80%, transparent);
   }
 
+  /* Bold is emphasis, not color — dark weight reads cleanly and lets the
+     terracotta accent stay meaningful (code, headings, links). */
   .prose-chat :global(strong) {
-    color: var(--primary);
+    color: var(--foreground);
+    font-weight: 600;
   }
 
   .prose-chat :global(a) {