feat: session detail page — completion action + outcome summary card

- In-progress sessions: amber banner with "Complete Session" button opens
  SessionOutcomeModal to set outcome/notes/next-steps and finalize
- Completed sessions: colored outcome summary card (icon + outcome label +
  duration + notes + next steps) replaces dense header metadata; "Copy for
  Ticket" promoted to primary action inside the card
- Export toolbar de-emphasized to secondary row of smaller controls below
  the summary card

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/pages/SessionDetailPage.tsx

@@ -1,15 +1,17 @@
 import { useEffect, useState } from 'react'
 import { useParams, useNavigate } from 'react-router-dom'
-import { Copy, Check, Eye, Save, Share2 } from 'lucide-react'
+import { Copy, Check, Eye, Save, Share2, CheckCircle2, AlertTriangle, ArrowUpRight, HelpCircle, Flag } from 'lucide-react'
 import { sessionsApi } from '@/api/sessions'
 import { stepsApi } from '@/api/steps'
 import { ExportPreviewModal } from '@/components/session/ExportPreviewModal'
 import { SaveSessionAsTreeModal } from '@/components/session/SaveSessionAsTreeModal'
 import { ShareSessionModal } from '@/components/session/ShareSessionModal'
+import { SessionOutcomeModal } from '@/components/session/SessionOutcomeModal'
 import { SessionTimeline } from '@/components/session/SessionTimeline'
 import { StepRatingModal } from '@/components/session/StepRatingModal'
 import { ActionMenu } from '@/components/common/ActionMenu'
 import type { MenuAction } from '@/components/common/ActionMenu'
+import type { SessionOutcome } from '@/types'
 import { useUserPreferencesStore } from '@/store/userPreferencesStore'
 import type { Session, SessionExport, SaveAsTreeRequest, Step, RedactionSummary } from '@/types'
 import { hasRatedSession, markSessionRated } from '@/lib/sessionRatings'
@@ -36,6 +38,8 @@ export function SessionDetailPage() {
   const [isSavingRatings, setIsSavingRatings] = useState(false)
   const [librarySteps, setLibrarySteps] = useState<Step[]>([])
   const [showShareModal, setShowShareModal] = useState(false)
+  const [showOutcomeModal, setShowOutcomeModal] = useState(false)
+  const [isCompleting, setIsCompleting] = useState(false)
   const [maxStepIndex, setMaxStepIndex] = useState<number | null>(null)
   const [detailLevel, setDetailLevel] = useState<'standard' | 'full'>('standard')
   const [includeSummary, setIncludeSummary] = useState(false)
@@ -227,6 +231,21 @@ export function SessionDetailPage() {
     }
   }
 
+  const handleCompleteSession = async (data: { outcome: SessionOutcome; outcome_notes?: string; next_steps?: string }) => {
+    if (!session) return
+    setIsCompleting(true)
+    try {
+      const updated = await sessionsApi.complete(session.id, data)
+      setSession(updated)
+      setShowOutcomeModal(false)
+      toast.success('Session completed')
+    } catch {
+      toast.error('Failed to complete session')
+    } finally {
+      setIsCompleting(false)
+    }
+  }
+
   const getDefaultTreeName = () => {
     if (!session) return ''
     const treeName = session.tree_snapshot?.name || 'Tree'
@@ -310,98 +329,103 @@ export function SessionDetailPage() {
     )
   }
 
+  // Outcome display config
+  const OUTCOME_CONFIG: Record<string, { icon: React.ReactNode; color: string; bg: string; border: string }> = {
+    resolved: { icon: <CheckCircle2 className="h-5 w-5" />, color: 'text-emerald-400', bg: 'bg-emerald-500/10', border: 'border-emerald-500/20' },
+    workaround: { icon: <AlertTriangle className="h-5 w-5" />, color: 'text-amber-400', bg: 'bg-amber-500/10', border: 'border-amber-500/20' },
+    escalated: { icon: <ArrowUpRight className="h-5 w-5" />, color: 'text-red-400', bg: 'bg-red-500/10', border: 'border-red-500/20' },
+    unresolved: { icon: <HelpCircle className="h-5 w-5" />, color: 'text-muted-foreground', bg: 'bg-muted', border: 'border-border' },
+  }
+  const outcomeConfig = session.outcome ? OUTCOME_CONFIG[session.outcome] : null
+
   return (
     <div className="container mx-auto px-4 py-6 sm:px-6 sm:py-8">
-      {/* Header */}
+      {/* Back nav */}
-      <div className="mb-8">
-        <div className="flex flex-col gap-4 sm:flex-row sm:items-start sm:justify-between">
-          <div>
       <button
         onClick={() => navigate('/sessions')}
-              className="mb-2 text-sm text-muted-foreground hover:text-foreground"
+        className="mb-4 text-sm text-muted-foreground hover:text-foreground"
       >
         ← Back to sessions
       </button>
+
+      {/* Page title row */}
+      <div className="mb-6 flex items-start justify-between gap-4">
+        <div>
           <h1 className="text-2xl font-heading font-bold text-foreground sm:text-3xl">
             {session.ticket_number || 'Session Details'}
           </h1>
-            <div className="mt-2 flex items-center gap-4 text-sm text-muted-foreground">
+          <p className="mt-1 text-sm text-muted-foreground">
-              <span
+            {session.tree_snapshot?.name}
-                className={cn(
+            {session.client_name && <> · Client: {session.client_name}</>}
-                  'flex items-center gap-1',
+            {' · '}{new Date(session.started_at).toLocaleDateString(undefined, { month: 'short', day: 'numeric', year: 'numeric' })}
-                  session.completed_at ? 'text-emerald-400' : 'text-yellow-400'
+          </p>
-                )}
+        </div>
-              >
+        <ActionMenu
-                <span
+          actions={[
-                  className={cn(
+            { label: 'Share', icon: Share2, onClick: () => setShowShareModal(true) },
-                    'h-2.5 w-2.5 rounded-full',
+            ...(session.completed_at ? [{ label: 'Save as Tree', icon: Save, onClick: () => setShowSaveAsTreeModal(true) }] as MenuAction[] : []),
-                    session.completed_at ? 'bg-green-500' : 'bg-yellow-500'
+          ]}
-                  )}
         />
-                {session.completed_at ? 'Completed' : 'In Progress'}
+      </div>
-              </span>
+
-              {session.client_name && <span>Client: {session.client_name}</span>}
+      {/* Session summary card */}
-              {session.completed_at && (
+      {session.completed_at && outcomeConfig ? (
-                <span className="rounded-full bg-accent px-2 py-0.5 text-xs text-foreground">
+        <div className={cn('mb-6 rounded-xl border p-5', outcomeConfig.border, outcomeConfig.bg)}>
-                  Duration: {getTotalDuration()}
+          <div className="flex flex-col gap-4 sm:flex-row sm:items-start sm:justify-between">
-                </span>
+            <div className="flex items-start gap-3">
-              )}
+              <span className={outcomeConfig.color}>{outcomeConfig.icon}</span>
-              {outcomeLabel && (
+              <div>
-                <span className="rounded-full bg-accent px-2 py-0.5 text-xs text-foreground">
+                <div className="flex items-center gap-2">
-                  Outcome: {outcomeLabel}
+                  <span className={cn('text-base font-semibold', outcomeConfig.color)}>{outcomeLabel}</span>
-                </span>
+                  <span className="text-sm text-muted-foreground">· {getTotalDuration()}</span>
-              )}
                 </div>
                 {session.outcome_notes && (
-              <p className="mt-2 text-sm text-muted-foreground">Outcome Notes: {session.outcome_notes}</p>
+                  <p className="mt-1 text-sm text-muted-foreground">{session.outcome_notes}</p>
                 )}
                 {session.next_steps && (
                   <div className="mt-2">
-                <span className="text-sm text-muted-foreground">Next Steps:</span>
+                    <span className="font-label text-[0.6875rem] uppercase tracking-wide text-muted-foreground">Next Steps</span>
                     <p className="mt-0.5 text-sm text-muted-foreground whitespace-pre-wrap">{session.next_steps}</p>
                   </div>
                 )}
               </div>
-
+            </div>
-          {/* Actions */}
+            {/* Primary action: Copy for Ticket */}
-          <div className="flex flex-col gap-2 sm:flex-row sm:items-center">
-            <ActionMenu
-              actions={[
-                {
-                  label: 'Share',
-                  icon: Share2,
-                  onClick: () => setShowShareModal(true),
-                },
-                ...(session.completed_at ? [{
-                  label: 'Save as Tree',
-                  icon: Save,
-                  onClick: () => setShowSaveAsTreeModal(true),
-                }] as MenuAction[] : []),
-              ]}
-            />
-
-            {/* Copy for Ticket */}
             <button
               onClick={handleCopyForTicket}
-              className={cn(
+              className="flex shrink-0 items-center gap-2 rounded-lg bg-gradient-brand px-4 py-2 text-sm font-medium text-white shadow-lg shadow-primary/20 hover:opacity-90"
-                'flex items-center gap-2 rounded-md bg-gradient-brand px-4 py-2 text-sm font-medium text-white shadow-lg shadow-primary/20',
-                'hover:opacity-90'
-              )}
             >
               {copiedPsa ? <Check className="h-4 w-4" /> : <Copy className="h-4 w-4" />}
               {copiedPsa ? 'Copied!' : 'Copy for Ticket'}
             </button>
+          </div>
+        </div>
+      ) : !session.completed_at ? (
+        /* In-progress banner */
+        <div className="mb-6 flex items-center justify-between gap-4 rounded-xl border border-amber-500/20 bg-amber-500/5 px-5 py-4">
+          <div className="flex items-center gap-3">
+            <Flag className="h-4 w-4 shrink-0 text-amber-400" />
+            <div>
+              <p className="text-sm font-medium text-amber-300">Session in progress</p>
+              <p className="text-xs text-muted-foreground">Set an outcome to finalize this session and generate documentation.</p>
+            </div>
+          </div>
+          <button
+            onClick={() => setShowOutcomeModal(true)}
+            className="shrink-0 rounded-lg bg-gradient-brand px-4 py-2 text-sm font-medium text-white shadow-lg shadow-primary/20 hover:opacity-90"
+          >
+            Complete Session
+          </button>
+        </div>
+      ) : null}
 
-            {/* Export Controls */}
+      {/* Export toolbar (secondary) */}
-            <div className="flex items-center gap-2">
+      <div className="mb-6 flex flex-wrap items-center gap-2">
         <select
           value={exportFormat}
           onChange={(e) => setExportFormat(e.target.value as typeof exportFormat)}
           aria-label="Export format"
-                className={cn(
+          className="rounded-md border border-border bg-card px-3 py-1.5 text-sm text-foreground focus:border-primary focus:outline-none focus:ring-1 focus:ring-primary/20"
-                  'w-full rounded-md border border-border bg-card px-3 py-2 text-sm text-foreground sm:w-auto',
-                  'focus:border-primary focus:outline-none focus:ring-1 focus:ring-primary/20'
-                )}
         >
           <option value="markdown">Markdown</option>
           <option value="text">Plain Text</option>
@@ -413,16 +437,11 @@ export function SessionDetailPage() {
             value={maxStepIndex ?? ''}
             onChange={(e) => setMaxStepIndex(e.target.value ? Number(e.target.value) : null)}
             aria-label="Export through step"
-                  className={cn(
+            className="rounded-md border border-border bg-card px-3 py-1.5 text-sm text-foreground focus:border-primary focus:outline-none focus:ring-1 focus:ring-primary/20"
-                    'rounded-md border border-border bg-card px-3 py-2 text-sm text-foreground',
-                    'focus:border-primary focus:outline-none focus:ring-1 focus:ring-primary/20'
-                  )}
           >
             <option value="">All steps</option>
             {session.decisions.map((_, idx) => (
-                    <option key={idx + 1} value={idx + 1}>
+              <option key={idx + 1} value={idx + 1}>Through step {idx + 1}</option>
-                      Through step {idx + 1}
-                    </option>
             ))}
           </select>
         )}
@@ -430,10 +449,7 @@ export function SessionDetailPage() {
           value={detailLevel}
           onChange={(e) => setDetailLevel(e.target.value as 'standard' | 'full')}
           aria-label="Detail level"
-                className={cn(
+          className="rounded-md border border-border bg-card px-3 py-1.5 text-sm text-foreground focus:border-primary focus:outline-none focus:ring-1 focus:ring-primary/20"
-                  'rounded-md border border-border bg-card px-3 py-2 text-sm text-foreground',
-                  'focus:border-primary focus:outline-none focus:ring-1 focus:ring-primary/20'
-                )}
         >
           <option value="standard">Standard</option>
           <option value="full">Full Detail</option>
@@ -442,27 +458,28 @@ export function SessionDetailPage() {
           onClick={handleCopy}
           disabled={isExporting}
           title="Copy to clipboard"
-                className={cn(
+          className="rounded-md border border-border bg-card p-1.5 text-muted-foreground hover:bg-accent hover:text-foreground disabled:opacity-50"
-                  'rounded-md border border-border bg-card p-2 text-muted-foreground',
-                  'hover:bg-accent hover:text-foreground disabled:opacity-50'
-                )}
         >
           {copied ? <Check className="h-4 w-4 text-emerald-400" /> : <Copy className="h-4 w-4" />}
         </button>
         <button
           onClick={handlePreview}
           disabled={isExporting}
-                className={cn(
+          className="flex items-center gap-1.5 rounded-md border border-border bg-card px-3 py-1.5 text-sm text-muted-foreground hover:bg-accent hover:text-foreground disabled:opacity-50"
-                  'flex items-center gap-2 rounded-md bg-gradient-brand px-4 py-2 text-sm font-medium text-white shadow-lg shadow-primary/20',
-                  'hover:opacity-90 disabled:opacity-50'
-                )}
         >
           <Eye className="h-4 w-4" />
           {isExporting ? 'Loading...' : 'Preview'}
         </button>
-            </div>
+        {/* Copy for ticket (secondary position when session is complete) */}
-          </div>
+        {session.completed_at && (
-        </div>
+          <button
+            onClick={handleCopyForTicket}
+            className="flex items-center gap-1.5 rounded-md border border-border bg-card px-3 py-1.5 text-sm text-muted-foreground hover:bg-accent hover:text-foreground"
+          >
+            {copiedPsa ? <Check className="h-4 w-4 text-emerald-400" /> : <Copy className="h-4 w-4" />}
+            {copiedPsa ? 'Copied!' : 'Copy for Ticket'}
+          </button>
+        )}
       </div>
 
       {/* Timeline / Step Checklist */}
@@ -513,6 +530,14 @@ export function SessionDetailPage() {
         isOpen={showShareModal}
         onClose={() => setShowShareModal(false)}
       />
+
+      {/* Complete Session Modal (in-progress sessions) */}
+      <SessionOutcomeModal
+        isOpen={showOutcomeModal}
+        onClose={() => setShowOutcomeModal(false)}
+        onSubmit={handleCompleteSession}
+        isSubmitting={isCompleting}
+      />
     </div>
   )
 }