diff --git a/client/pages/RoadmapPage.jsx b/client/pages/RoadmapPage.tsx
similarity index 85%
rename from client/pages/RoadmapPage.jsx
rename to client/pages/RoadmapPage.tsx
index 00493fa..bc2655d 100644
--- a/client/pages/RoadmapPage.jsx
+++ b/client/pages/RoadmapPage.tsx
@@ -20,10 +20,64 @@ import {
   RefreshCw,
 } from 'lucide-react';
 import { api } from '@/api';
+import { errMessage } from '@/lib/utils';
+
+/* ─── Types ──────────────────────────────────────────────────────────────── */
+
+interface IssueLabel {
+  id: number | string;
+  name: string;
+  color: string;
+}
+
+interface Issue {
+  id: number | string;
+  number: number;
+  title: string;
+  body?: string | null;
+  html_url: string;
+  created_at: string;
+  comments?: number;
+  labels?: IssueLabel[];
+}
+
+interface Lane {
+  key: string;
+  emoji: string;
+  label: string;
+  borderColor: string;
+  textColor: string;
+  badgeClass: string;
+}
+
+interface Agent {
+  name?: string;
+  status?: string;
+  time?: string;
+}
+
+interface DevLogEntryData {
+  version?: string;
+  date?: string;
+  status?: string;
+  filesModified?: string[];
+  agents?: Agent[];
+  workCompleted?: string[];
+}
+
+interface RoadmapData {
+  issues?: Issue[];
+  fetchedAt?: string | null;
+  stale?: boolean;
+}
+
+interface DevLogData {
+  entries?: DevLogEntryData[];
+}
 
 /* ─── Priority lanes ─────────────────────────────────────────────────────── */
 
-const PRIORITY_LANES = [
+const PRIORITY_LANES: Lane[] = [
   { key: 'critical',   emoji: '🔴', label: 'CRITICAL',     borderColor: 'border-t-red-500',    textColor: 'text-red-500',    badgeClass: 'bg-red-500/15 text-red-500 border-red-500/20' },
   { key: 'high',       emoji: '🟠', label: 'HIGH',         borderColor: 'border-t-orange-500', textColor: 'text-orange-500', badgeClass: 'bg-orange-500/15 text-orange-500 border-orange-500/20' },
   { key: 'medium',     emoji: '🟡', label: 'MEDIUM',       borderColor: 'border-t-yellow-500', textColor: 'text-yellow-500', badgeClass: 'bg-yellow-500/15 text-yellow-500 border-yellow-500/20' },
@@ -33,7 +87,7 @@ const PRIORITY_LANES = [
 
 /* ─── Helpers ────────────────────────────────────────────────────────────── */
 
-function priorityFromLabels(labels = []) {
+function priorityFromLabels(labels: IssueLabel[] = []): string {
   for (const l of labels) {
     if (l.name === 'priority:critical')     return 'critical';
     if (l.name === 'priority:high')         return 'high';
@@ -44,11 +98,11 @@ function priorityFromLabels(labels = []) {
   return 'low';
 }
 
-function cleanTitle(title) {
+function cleanTitle(title: string): string {
   return title.replace(/^(CRITICAL|HIGH|MEDIUM|LOW|NICE[\s-]TO[\s-]HAVE)\s*:\s*/i, '').trim();
 }
 
-function stripMarkdown(text) {
+function stripMarkdown(text?: string | null): string {
   if (!text) return '';
   return text
     .replace(/#{1,6}\s+[^\n]*/g, '')
@@ -64,7 +118,7 @@ function stripMarkdown(text) {
     .trim();
 }
 
-function timeAgo(dateStr) {
+function timeAgo(dateStr: string): string {
   const diff  = Date.now() - new Date(dateStr).getTime();
   const mins  = Math.floor(diff / 60000);
   const hours = Math.floor(diff / 3600000);
@@ -76,7 +130,7 @@ function timeAgo(dateStr) {
   return new Date(dateStr).toLocaleDateString('en-US', { month: 'short', day: 'numeric' });
 }
 
-function labelStyle(hex) {
+function labelStyle(hex: string): React.CSSProperties {
   const r = parseInt(hex.slice(0, 2), 16);
   const g = parseInt(hex.slice(2, 4), 16);
   const b = parseInt(hex.slice(4, 6), 16);
@@ -89,7 +143,7 @@ function labelStyle(hex) {
 
 /* ─── Label chip ─────────────────────────────────────────────────────────── */
 
-function LabelChip({ label }) {
+function LabelChip({ label }: { label: IssueLabel }) {
   return (
     <span
       style={labelStyle(label.color)}
@@ -102,7 +156,7 @@ function LabelChip({ label }) {
 
 /* ─── Issue card ─────────────────────────────────────────────────────────── */
 
-function IssueCard({ issue }) {
+function IssueCard({ issue }: { issue: Issue }) {
   const typeLabels = issue.labels || [];
   const title      = cleanTitle(issue.title);
   const preview    = stripMarkdown(issue.body);
@@ -148,7 +202,7 @@ function IssueCard({ issue }) {
             <Clock className="h-3 w-3 shrink-0" />
             {timeAgo(issue.created_at)}
           </span>
-          {issue.comments > 0 && (
+          {(issue.comments ?? 0) > 0 && (
             <span className="flex items-center gap-1">
               <MessageCircle className="h-3 w-3 shrink-0" />
               {issue.comments}
@@ -163,7 +217,7 @@ function IssueCard({ issue }) {
 
 /* ─── Priority lane ──────────────────────────────────────────────────────── */
 
-function PriorityLane({ lane, items }) {
+function PriorityLane({ lane, items }: { lane: Lane; items: Issue[] }) {
   return (
     <section
       aria-label={`${lane.label} priority`}
@@ -189,13 +243,19 @@ function PriorityLane({ lane, items }) {
 
 /* ─── Stats bar ──────────────────────────────────────────────────────────── */
 
-function StatsBar({ issues, fetchedAt, stale, onRefresh, refreshing }) {
-  const counts = Object.fromEntries(PRIORITY_LANES.map(l => [l.key, 0]));
+function StatsBar({ issues, fetchedAt, stale, onRefresh, refreshing }: {
+  issues: Issue[];
+  fetchedAt?: string | null;
+  stale?: boolean;
+  onRefresh: () => void;
+  refreshing: boolean;
+}) {
+  const counts: Record<string, number> = Object.fromEntries(PRIORITY_LANES.map(l => [l.key, 0]));
   issues.forEach(issue => {
     const p = priorityFromLabels(issue.labels);
     counts[p] = (counts[p] || 0) + 1;
   });
-  const nonEmpty = PRIORITY_LANES.filter(l => counts[l.key] > 0);
+  const nonEmpty = PRIORITY_LANES.filter(l => (counts[l.key] ?? 0) > 0);
 
   return (
     <div className="flex flex-wrap items-center gap-x-3 gap-y-2 rounded-xl border border-border/60 bg-muted/30 px-4 py-3 text-[12px]">
@@ -236,7 +296,7 @@ function StatsBar({ issues, fetchedAt, stale, onRefresh, refreshing }) {
 
 /* ─── Dev log entry ──────────────────────────────────────────────────────── */
 
-function DevLogEntry({ entry }) {
+function DevLogEntry({ entry }: { entry: DevLogEntryData }) {
   const [open, setOpen] = useState(false);
 
   return (
@@ -262,10 +322,10 @@ function DevLogEntry({ entry }) {
                     {entry.status}
                   </Badge>
                 )}
-                {entry.filesModified?.length > 0 && (
+                {(entry.filesModified?.length ?? 0) > 0 && (
                   <span className="text-xs text-muted-foreground flex items-center gap-0.5">
                     <FileCode className="h-3 w-3" />
-                    {entry.filesModified.length} files
+                    {entry.filesModified?.length} files
                   </span>
                 )}
                 <ChevronDown className="h-3.5 w-3.5 text-muted-foreground ml-auto transition-transform duration-200 group-data-[state=open]:rotate-180" />
@@ -275,11 +335,11 @@ function DevLogEntry({ entry }) {
 
           <CollapsibleContent>
             <div className="mt-3 space-y-3 pl-1">
-              {entry.agents?.length > 0 && (
+              {(entry.agents?.length ?? 0) > 0 && (
                 <div>
                   <p className="text-[10px] font-bold uppercase tracking-wider text-muted-foreground mb-2">Agents</p>
                   <div className="flex flex-wrap gap-2">
-                    {entry.agents.map((agent, idx) => (
+                    {entry.agents?.map((agent, idx) => (
                       <Badge key={idx} variant="outline" className={`text-[11px] ${
                         agent.status === 'COMPLETED'   ? 'bg-emerald-500/15 text-emerald-500 border-emerald-500/20' :
                         agent.status === 'IN PROGRESS' ? 'bg-yellow-500/15 text-yellow-500 border-yellow-500/20'   :
@@ -293,11 +353,11 @@ function DevLogEntry({ entry }) {
                 </div>
               )}
 
-              {entry.filesModified?.length > 0 && (
+              {(entry.filesModified?.length ?? 0) > 0 && (
                 <div>
                   <p className="text-[10px] font-bold uppercase tracking-wider text-muted-foreground mb-1.5">Files Modified</p>
                   <div className="flex flex-wrap gap-1">
-                    {entry.filesModified.map((file, idx) => (
+                    {entry.filesModified?.map((file, idx) => (
                       <code key={idx} className="max-w-full break-all rounded border border-border/50 bg-muted/50 px-1.5 py-0.5 text-[11px] text-muted-foreground">
                         {file}
                       </code>
@@ -306,11 +366,11 @@ function DevLogEntry({ entry }) {
                 </div>
               )}
 
-              {entry.workCompleted?.length > 0 && (
+              {(entry.workCompleted?.length ?? 0) > 0 && (
                 <div>
                   <p className="text-[10px] font-bold uppercase tracking-wider text-muted-foreground mb-1.5">Work Completed</p>
                   <ul className="space-y-1">
-                    {entry.workCompleted.map((work, idx) => (
+                    {entry.workCompleted?.map((work, idx) => (
                       <li key={idx} className="text-sm text-muted-foreground flex items-start gap-1.5">
                         <span className="text-emerald-500 mt-0.5 shrink-0">✓</span>
                         <span className="min-w-0 break-words">{work}</span>
@@ -330,20 +390,20 @@ function DevLogEntry({ entry }) {
 /* ─── Main page ──────────────────────────────────────────────────────────── */
 
 export default function RoadmapPage() {
-  const [roadmapData,      setRoadmapData]      = useState(null);
-  const [devLogData,       setDevLogData]       = useState(null);
+  const [roadmapData,      setRoadmapData]      = useState<RoadmapData | null>(null);
+  const [devLogData,       setDevLogData]       = useState<DevLogData | null>(null);
   const [roadmapLoading,   setRoadmapLoading]   = useState(true);
   const [roadmapRefreshing,setRoadmapRefreshing]= useState(false);
   const [devLogLoading,    setDevLogLoading]    = useState(false);
-  const [roadmapError,     setRoadmapError]     = useState(null);
-  const [devLogError,      setDevLogError]      = useState(null);
+  const [roadmapError,     setRoadmapError]     = useState<string | null>(null);
+  const [devLogError,      setDevLogError]      = useState<string | null>(null);
 
   useEffect(() => {
     let cancelled = false;
     setRoadmapLoading(true);
     api.roadmap()
-      .then(data => { if (!cancelled) setRoadmapData(data); })
-      .catch(err  => { if (!cancelled) setRoadmapError(err.message || 'Failed to load issues'); })
+      .then(data => { if (!cancelled) setRoadmapData(data as RoadmapData); })
+      .catch(err  => { if (!cancelled) setRoadmapError(errMessage(err, 'Failed to load issues')); })
       .finally(()  => { if (!cancelled) setRoadmapLoading(false); });
     return () => { cancelled = true; };
   }, []);
@@ -351,7 +411,7 @@ export default function RoadmapPage() {
   const handleRefresh = () => {
     setRoadmapRefreshing(true);
     api.roadmap(true)
-      .then(data => setRoadmapData(data))
+      .then(data => setRoadmapData(data as RoadmapData))
       .catch(() => {})
       .finally(() => setRoadmapRefreshing(false));
   };
@@ -361,8 +421,8 @@ export default function RoadmapPage() {
     let cancelled = false;
     setDevLogLoading(true);
     api.devLog()
-      .then(data => { if (!cancelled) setDevLogData(data); })
-      .catch(err  => { if (!cancelled) setDevLogError(err.message || 'Failed to load activity log'); })
+      .then(data => { if (!cancelled) setDevLogData(data as DevLogData); })
+      .catch(err  => { if (!cancelled) setDevLogError(errMessage(err, 'Failed to load activity log')); })
       .finally(()  => { if (!cancelled) setDevLogLoading(false); });
     return () => { cancelled = true; };
   }, [devLogData, devLogLoading]);
@@ -480,7 +540,7 @@ export default function RoadmapPage() {
             </div>
           ) : devLogData ? (
             <div className="pt-2">
-              {devLogData.entries.map((entry, idx) => (
+              {devLogData.entries?.map((entry, idx) => (
                 <DevLogEntry key={entry.version || idx} entry={entry} />
               ))}
             </div>