fix: final review fixes — port guard, network error handling, wizard back nav, tablist arrow keys, dialog focus trap

- wizard.py: wrap syslog_port int() in try/except to default 514 on non-numeric input
- ContextView: add try/catch to doDelete, doDeleteFact, addFact for network errors
- ContextView: arrow-key navigation for tablist (ArrowLeft/ArrowRight)
- DiagnoseView: arrow-key navigation for tablist (ArrowLeft/ArrowRight)
- WizardOverlay: reset current_step to last schema step when clicking 'Go back and edit'
- WizardOverlay: focus trap on Tab/Shift+Tab within dialog element

app/context/wizard.py

@@ -115,7 +115,10 @@ def apply_session(db_path: Path, session: dict[str, Any]) -> dict[str, Any]:
 
     syslog_answer = str(answers.get("syslog") or "No")
     if syslog_answer.startswith("Yes"):
-        port = int(answers.get("syslog_port") or 514)
+        try:
+            port = int(answers.get("syslog_port") or 514)
+        except (ValueError, TypeError):
+            port = 514
         sources.append({"type": "syslog", "id": f"syslog:{hostname}", "port": port})
 
     return {

web/src/components/WizardOverlay.vue

@@ -4,6 +4,7 @@
     aria-modal="true"
     :aria-labelledby="`wiz-heading-${currentStep?.step ?? 1}`"
     class="fixed inset-0 z-50 bg-surface overflow-y-auto"
+    :ref="(el) => { dialogRef = el as HTMLElement | null }"
   >
     <div class="max-w-lg mx-auto py-12 px-6">
       <!-- Progress heading -->
@@ -94,7 +95,7 @@
         >
           {{ applying ? 'Saving…' : `Save ${factCount} facts and apply source config` }}
         </button>
-        <button @click="showSummary = false" class="text-sm text-text-dim hover:text-text-primary">
+        <button @click="showSummary = false; session = { ...session, current_step: schema.length }" class="text-sm text-text-dim hover:text-text-primary">
           Go back and edit
         </button>
       </div>
@@ -133,6 +134,7 @@ const applying = ref(false)
 const applyError = ref<string | null>(null)
 const headingRef = ref<HTMLElement | null>(null)
 const summaryRef = ref<HTMLElement | null>(null)
+const dialogRef  = ref<HTMLElement | null>(null)
 
 const totalSteps = computed(() => schema.value.length)
 const currentStep = computed(() =>
@@ -207,6 +209,19 @@ async function applyWizard() {
 }
 
 function onKeydown(e: KeyboardEvent) {
+  if (e.key === 'Tab') {
+    const focusable = dialogRef.value?.querySelectorAll<HTMLElement>(
+      'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])'
+    )
+    if (!focusable || focusable.length === 0) return
+    const first = focusable[0]!
+    const last = focusable[focusable.length - 1]!
+    if (e.shiftKey) {
+      if (document.activeElement === first) { e.preventDefault(); last.focus() }
+    } else {
+      if (document.activeElement === last) { e.preventDefault(); first.focus() }
+    }
+  }
   if (e.key === 'Escape') emit('close')
 }
 

web/src/views/ContextView.vue

@@ -21,7 +21,7 @@
     <!-- Tabs -->
     <div role="tablist" aria-label="Context sections" class="flex gap-1 mb-4 border-b border-surface-border">
       <button
-        v-for="tab in ['Documents', 'Facts']"
+        v-for="(tab, idx) in ctxTabs"
         :key="tab"
         role="tab"
         :aria-selected="activeTab === tab"
@@ -29,6 +29,8 @@
         :aria-controls="`ctx-panel-${tab}`"
         :tabindex="activeTab === tab ? 0 : -1"
         @click="activeTab = tab"
+        @keydown="handleTabKey($event, tab)"
+        :ref="(el) => { if (el) tabRefs[idx] = el as HTMLButtonElement }"
         :class="[
           'px-4 py-2 text-sm transition-colors',
           activeTab === tab
@@ -189,7 +191,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted } from 'vue'
+import { ref, onMounted, nextTick } from 'vue'
 import DocUploadZone from '@/components/DocUploadZone.vue'
 import WizardOverlay from '@/components/WizardOverlay.vue'
 
@@ -199,6 +201,19 @@ interface Doc { id: string; filename: string; doc_type: string; file_size: numbe
 interface Fact { id: string; category: string; key: string; value: string; source: string | null; created_at: string }
 
 const activeTab = ref('Documents')
+const tabRefs = ref<HTMLButtonElement[]>([])
+const ctxTabs = ['Documents', 'Facts']
+
+function handleTabKey(e: KeyboardEvent, currentTab: string) {
+  const idx = ctxTabs.indexOf(currentTab)
+  let next = idx
+  if (e.key === 'ArrowRight') next = (idx + 1) % ctxTabs.length
+  else if (e.key === 'ArrowLeft') next = (idx - 1 + ctxTabs.length) % ctxTabs.length
+  else return
+  e.preventDefault()
+  activeTab.value = ctxTabs[next]!
+  nextTick(() => tabRefs.value[next]?.focus())
+}
 const showWizard = ref(false)
 const docs = ref<Doc[]>([])
 const facts = ref<Fact[]>([])
@@ -224,30 +239,36 @@ async function loadFacts() {
 }
 
 async function doDelete(id: string) {
-  const r = await fetch(`${BASE}/api/context/docs/${id}`, { method: 'DELETE' })
-  if (r.ok) { confirmDelete.value = null; await loadDocs() }
-  else error.value = 'Failed to delete document'
+  try {
+    const r = await fetch(`${BASE}/api/context/docs/${id}`, { method: 'DELETE' })
+    if (r.ok) { confirmDelete.value = null; await loadDocs() }
+    else error.value = 'Failed to delete document'
+  } catch { error.value = 'Could not reach server' }
 }
 
 async function doDeleteFact(id: string) {
-  const r = await fetch(`${BASE}/api/context/facts/${id}`, { method: 'DELETE' })
-  if (r.ok) { confirmDeleteFact.value = null; await loadFacts() }
-  else error.value = 'Failed to delete fact'
+  try {
+    const r = await fetch(`${BASE}/api/context/facts/${id}`, { method: 'DELETE' })
+    if (r.ok) { confirmDeleteFact.value = null; await loadFacts() }
+    else error.value = 'Failed to delete fact'
+  } catch { error.value = 'Could not reach server' }
 }
 
 async function addFact() {
   if (!newFact.value.key.trim() || !newFact.value.value.trim()) return
-  const r = await fetch(`${BASE}/api/context/facts`, {
-    method: 'POST',
-    headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({ ...newFact.value, source: 'manual' }),
-  })
-  if (r.ok) {
-    newFact.value = { category: 'service', key: '', value: '' }
-    await loadFacts()
-  } else {
-    error.value = 'Failed to add fact'
-  }
+  try {
+    const r = await fetch(`${BASE}/api/context/facts`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ ...newFact.value, source: 'manual' }),
+    })
+    if (r.ok) {
+      newFact.value = { category: 'service', key: '', value: '' }
+      await loadFacts()
+    } else {
+      error.value = 'Failed to add fact'
+    }
+  } catch { error.value = 'Could not reach server' }
 }
 
 function onWizardComplete() {

web/src/views/DiagnoseView.vue

@@ -11,14 +11,16 @@
     <!-- Tab toggle -->
     <div role="tablist" aria-label="Diagnose mode" class="flex gap-1 mb-6 border-b border-surface-border">
       <button
-        v-for="t in tabs"
+        v-for="(t, idx) in tabs"
         :key="t.key"
         role="tab"
         :aria-selected="activeTab === t.key"
         :id="`tab-${t.key}`"
         :aria-controls="`tabpanel-${t.key}`"
         :tabindex="activeTab === t.key ? 0 : -1"
-        @click="activeTab = t.key"
+        @click="activeTab = t.key as 'quick' | 'structured'"
+        @keydown="handleTabKey($event, t.key)"
+        :ref="(el) => { if (el) tabRefs[idx] = el as HTMLButtonElement }"
         :class="[
           'px-4 py-2 text-sm transition-colors border-b-2 -mb-px',
           activeTab === t.key
@@ -60,7 +62,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, watch } from 'vue'
+import { ref, onMounted, watch, nextTick } from 'vue'
 import { useRoute, RouterLink } from 'vue-router'
 import QuickCapture from '@/components/QuickCapture.vue'
 import IncidentForm from '@/components/IncidentForm.vue'
@@ -72,6 +74,19 @@ const tabs: { key: 'quick' | 'structured'; label: string }[] = [
 ]
 const activeTab    = ref<'quick' | 'structured'>('quick')
 const createdLabel = ref('')
+const tabRefs      = ref<HTMLButtonElement[]>([])
+
+function handleTabKey(e: KeyboardEvent, currentKey: 'quick' | 'structured') {
+  const keys = tabs.map(t => t.key)
+  const idx = keys.indexOf(currentKey)
+  let next = idx
+  if (e.key === 'ArrowRight') next = (idx + 1) % keys.length
+  else if (e.key === 'ArrowLeft') next = (idx - 1 + keys.length) % keys.length
+  else return
+  e.preventDefault()
+  activeTab.value = keys[next] as 'quick' | 'structured'
+  nextTick(() => tabRefs.value[next]?.focus())
+}
 
 onMounted(() => {
   if (route.query.tab === 'structured') activeTab.value = 'structured'