feat(34-02): extract hardcoded strings from thread/candidate components

- CandidateCard: replace all hardcoded titles and badge text with t()
- CandidateListItem: add useTranslation, replace winner/delete/open labels and +/- Notes badge
- CandidateForm: add useTranslation, replace all form labels, placeholders, validation errors, submit button
- ComparisonTable: move STATUS_LABELS inside component with t(), replace all ATTRIBUTE_ROWS labels, View button, impact row labels
- StatusBadge: refactor STATUS_CONFIG to STATUS_ICONS + runtime STATUS_LABELS via t()
- CreateThreadModal: replace title, thread name label, category label, placeholder, cancel/submit buttons, error messages
- AddToThreadModal: replace modal titles, labels, placeholders, back/cancel/submit buttons, error messages
- threads.json: extend candidateForm with category, notes, pros, cons, product link labels and all placeholders

src/client/components/AddToThreadModal.tsx

@@ -1,5 +1,6 @@
 import { useQueryClient } from "@tanstack/react-query";
 import { useEffect, useState } from "react";
+import { useTranslation } from "react-i18next";
 import { toast } from "sonner";
 import { useCategories } from "../hooks/useCategories";
 import { useGlobalItem } from "../hooks/useGlobalItems";
@@ -8,6 +9,7 @@ import { apiPost } from "../lib/api";
 import { useUIStore } from "../stores/uiStore";
 
 export function AddToThreadModal() {
+	const { t } = useTranslation(["threads", "common"]);
 	const { open, globalItemId, globalItemName } = useUIStore(
 		(s) => s.addToThreadModal,
 	);
@@ -114,7 +116,7 @@ export function AddToThreadModal() {
 			toast.success(`Added to "${thread?.name ?? "thread"}"`);
 			closeAddToThread();
 		} catch (err) {
-			setError(err instanceof Error ? err.message : "Failed to add candidate");
+			setError(err instanceof Error ? err.message : t("addToThread.failedToAdd"));
 		} finally {
 			setIsSubmitting(false);
 		}
@@ -142,7 +144,7 @@ export function AddToThreadModal() {
 			toast.success(`Created "${trimmedName}" with first candidate`);
 			closeAddToThread();
 		} catch (err) {
-			setError(err instanceof Error ? err.message : "Failed to create thread");
+			setError(err instanceof Error ? err.message : t("addToThread.failedToCreate"));
 		} finally {
 			setIsSubmitting(false);
 		}
@@ -173,7 +175,7 @@ export function AddToThreadModal() {
 				onKeyDown={() => {}}
 			>
 				<h2 className="text-lg font-semibold text-gray-900 mb-1">
-					{mode === "pick" ? "Add to Thread" : "New Thread + Candidate"}
+					{mode === "pick" ? t("addToThread.title") : t("addToThread.newThreadTitle")}
 				</h2>
 				<p className="text-sm text-gray-500 mb-4">{globalItemName}</p>
 
@@ -184,7 +186,7 @@ export function AddToThreadModal() {
 								htmlFor="thread-select"
 								className="block text-sm font-medium text-gray-700 mb-1"
 							>
-								Thread
+								{t("addToThread.thread")}
 							</label>
 							<select
 								id="thread-select"
@@ -197,7 +199,7 @@ export function AddToThreadModal() {
 										{t.name} ({t.categoryName})
 									</option>
 								))}
-								<option value="new">+ New Thread...</option>
+								<option value="new">{t("addToThread.newThread")}</option>
 							</select>
 						</div>
 					) : (
@@ -207,14 +209,14 @@ export function AddToThreadModal() {
 									htmlFor="new-thread-name"
 									className="block text-sm font-medium text-gray-700 mb-1"
 								>
-									Thread name
+									{t("addToThread.threadName")}
 								</label>
 								<input
 									id="new-thread-name"
 									type="text"
 									value={newThreadName}
 									onChange={(e) => setNewThreadName(e.target.value)}
-									placeholder="e.g. Lightweight sleeping bag"
+									placeholder={t("create.namePlaceholder")}
 									className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-gray-400 focus:border-transparent"
 								/>
 							</div>
@@ -224,7 +226,7 @@ export function AddToThreadModal() {
 									htmlFor="new-thread-category"
 									className="block text-sm font-medium text-gray-700 mb-1"
 								>
-									Category
+									{t("create.category")}
 								</label>
 								<select
 									id="new-thread-category"
@@ -248,7 +250,7 @@ export function AddToThreadModal() {
 									onClick={() => setMode("pick")}
 									className="text-sm text-gray-500 hover:text-gray-700 underline"
 								>
-									Back to thread picker
+									{t("addToThread.backToPicker")}
 								</button>
 							)}
 						</>
@@ -266,7 +268,7 @@ export function AddToThreadModal() {
 							}
 							className="px-4 py-2 text-sm font-medium text-gray-700 bg-gray-100 hover:bg-gray-200 rounded-lg transition-colors"
 						>
-							Cancel
+							{t("common:actions.cancel")}
 						</button>
 						<button
 							type="submit"
@@ -274,10 +276,10 @@ export function AddToThreadModal() {
 							className="px-4 py-2 text-sm font-medium text-white bg-gray-700 hover:bg-gray-800 disabled:opacity-50 rounded-lg transition-colors"
 						>
 							{isSubmitting
-								? "Adding..."
+								? t("addToThread.adding")
 								: mode === "pick"
-									? "Add as Candidate"
+									? t("addToThread.addAsCandidate")
-									: "Create & Add"}
+									: t("addToThread.createAndAdd")}
 						</button>
 					</div>
 				</form>

src/client/components/CandidateCard.tsx

@@ -1,4 +1,5 @@
 import { useNavigate } from "@tanstack/react-router";
+import { useTranslation } from "react-i18next";
 import { useFormatters } from "../hooks/useFormatters";
 import type { CandidateDelta } from "../hooks/useImpactDeltas";
 import { LucideIcon } from "../lib/iconData";
@@ -55,6 +56,7 @@ export function CandidateCard({
 	rank,
 	delta,
 }: CandidateCardProps) {
+	const { t } = useTranslation("threads");
 	const { weight, price } = useFormatters();
 	const navigate = useNavigate();
 	const openConfirmDeleteCandidate = useUIStore(
@@ -90,10 +92,10 @@ export function CandidateCard({
 						}
 					}}
 					className="absolute top-2 left-2 z-10 px-2 py-0.5 flex items-center gap-1 rounded-full text-xs font-medium bg-amber-100/90 text-amber-700 hover:bg-amber-200 opacity-0 group-hover:opacity-100 transition-all cursor-pointer"
-					title="Pick as winner"
+					title={t("candidateCard.pickAsWinner")}
 				>
 					<LucideIcon name="trophy" size={12} />
-					Winner
+					{t("candidateCard.winner")}
 				</span>
 			)}
 			<span
@@ -110,7 +112,7 @@ export function CandidateCard({
 					}
 				}}
 				className={`absolute top-2 ${productUrl ? "right-10" : "right-2"} z-10 w-6 h-6 flex items-center justify-center rounded-full bg-gray-100/80 text-gray-400 hover:bg-red-100 hover:text-red-500 opacity-0 group-hover:opacity-100 transition-all cursor-pointer`}
-				title="Delete candidate"
+				title={t("candidateCard.deleteCandidate")}
 			>
 				<svg
 					className="w-3.5 h-3.5"
@@ -141,7 +143,7 @@ export function CandidateCard({
 						}
 					}}
 					className="absolute top-2 right-2 z-10 w-6 h-6 flex items-center justify-center rounded-full bg-gray-100/80 text-gray-400 hover:bg-gray-200 hover:text-gray-600 opacity-0 group-hover:opacity-100 transition-all cursor-pointer"
-					title="Open product link"
+					title={t("candidateCard.openProductLink")}
 				>
 					<svg
 						className="w-3.5 h-3.5"
@@ -214,7 +216,7 @@ export function CandidateCard({
 					<StatusBadge status={status} onStatusChange={onStatusChange} />
 					{(pros || cons) && (
 						<span className="inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium bg-purple-50 text-purple-700">
-							+/- Notes
+							{t("candidateCard.prosCons")}
 						</span>
 					)}
 				</div>

src/client/components/CandidateForm.tsx

@@ -1,4 +1,5 @@
 import { useEffect, useState } from "react";
+import { useTranslation } from "react-i18next";
 import { useCreateCandidate, useUpdateCandidate } from "../hooks/useCandidates";
 import { useCurrency } from "../hooks/useCurrency";
 import { useThread } from "../hooks/useThreads";
@@ -42,6 +43,7 @@ export function CandidateForm({
 	candidateId,
 	onClose,
 }: CandidateFormProps) {
+	const { t } = useTranslation(["threads", "common"]);
 	const { data: thread } = useThread(threadId);
 	const { currency } = useCurrency();
 	const createCandidate = useCreateCandidate(threadId);
@@ -79,26 +81,26 @@ export function CandidateForm({
 	function validate(): boolean {
 		const newErrors: Record<string, string> = {};
 		if (!form.name.trim()) {
-			newErrors.name = "Name is required";
+			newErrors.name = t("common:errors.nameRequired");
 		}
 		if (
 			form.weightGrams &&
 			(Number.isNaN(Number(form.weightGrams)) || Number(form.weightGrams) < 0)
 		) {
-			newErrors.weightGrams = "Must be a positive number";
+			newErrors.weightGrams = t("common:errors.positiveNumber");
 		}
 		if (
 			form.priceDollars &&
 			(Number.isNaN(Number(form.priceDollars)) || Number(form.priceDollars) < 0)
 		) {
-			newErrors.priceDollars = "Must be a positive number";
+			newErrors.priceDollars = t("common:errors.positiveNumber");
 		}
 		if (
 			form.productUrl &&
 			form.productUrl.trim() !== "" &&
 			!form.productUrl.match(/^https?:\/\//)
 		) {
-			newErrors.productUrl = "Must be a valid URL (https://...)";
+			newErrors.productUrl = t("common:errors.validUrl");
 		}
 		setErrors(newErrors);
 		return Object.keys(newErrors).length === 0;
@@ -160,7 +162,7 @@ export function CandidateForm({
 					htmlFor="candidate-name"
 					className="block text-sm font-medium text-gray-700 mb-1"
 				>
-					Name *
+					{t("candidateForm.nameRequired")}
 				</label>
 				<input
 					id="candidate-name"
@@ -168,7 +170,7 @@ export function CandidateForm({
 					value={form.name}
 					onChange={(e) => setForm((f) => ({ ...f, name: e.target.value }))}
 					className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-gray-400 focus:border-transparent"
-					placeholder="e.g. Osprey Talon 22"
+					placeholder={t("candidateForm.namePlaceholder")}
 				/>
 				{errors.name && (
 					<p className="mt-1 text-xs text-red-500">{errors.name}</p>
@@ -181,7 +183,7 @@ export function CandidateForm({
 					htmlFor="candidate-weight"
 					className="block text-sm font-medium text-gray-700 mb-1"
 				>
-					Weight (g)
+					{t("candidateForm.weightLabel")}
 				</label>
 				<input
 					id="candidate-weight"
@@ -193,7 +195,7 @@ export function CandidateForm({
 						setForm((f) => ({ ...f, weightGrams: e.target.value }))
 					}
 					className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-gray-400 focus:border-transparent"
-					placeholder="e.g. 680"
+					placeholder={t("candidateForm.weightPlaceholder")}
 				/>
 				{errors.weightGrams && (
 					<p className="mt-1 text-xs text-red-500">{errors.weightGrams}</p>
@@ -218,7 +220,7 @@ export function CandidateForm({
 						setForm((f) => ({ ...f, priceDollars: e.target.value }))
 					}
 					className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-gray-400 focus:border-transparent"
-					placeholder="e.g. 129.99"
+					placeholder={t("candidateForm.pricePlaceholder")}
 				/>
 				{errors.priceDollars && (
 					<p className="mt-1 text-xs text-red-500">{errors.priceDollars}</p>
@@ -228,7 +230,7 @@ export function CandidateForm({
 			{/* Category */}
 			<div>
 				<label className="block text-sm font-medium text-gray-700 mb-1">
-					Category
+					{t("candidateForm.categoryLabel")}
 				</label>
 				<CategoryPicker
 					value={form.categoryId}
@@ -242,7 +244,7 @@ export function CandidateForm({
 					htmlFor="candidate-notes"
 					className="block text-sm font-medium text-gray-700 mb-1"
 				>
-					Notes
+					{t("candidateForm.notesLabel")}
 				</label>
 				<textarea
 					id="candidate-notes"
@@ -250,7 +252,7 @@ export function CandidateForm({
 					onChange={(e) => setForm((f) => ({ ...f, notes: e.target.value }))}
 					rows={3}
 					className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-gray-400 focus:border-transparent resize-none"
-					placeholder="Any additional notes..."
+					placeholder={t("candidateForm.notesPlaceholder")}
 				/>
 			</div>
 
@@ -260,7 +262,7 @@ export function CandidateForm({
 					htmlFor="candidate-pros"
 					className="block text-sm font-medium text-gray-700 mb-1"
 				>
-					Pros
+					{t("candidateForm.prosLabel")}
 				</label>
 				<textarea
 					id="candidate-pros"
@@ -268,7 +270,7 @@ export function CandidateForm({
 					onChange={(e) => setForm((f) => ({ ...f, pros: e.target.value }))}
 					rows={3}
 					className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-gray-400 focus:border-transparent resize-none"
-					placeholder="One pro per line..."
+					placeholder={t("candidateForm.prosPlaceholder")}
 				/>
 			</div>
 
@@ -278,7 +280,7 @@ export function CandidateForm({
 					htmlFor="candidate-cons"
 					className="block text-sm font-medium text-gray-700 mb-1"
 				>
-					Cons
+					{t("candidateForm.consLabel")}
 				</label>
 				<textarea
 					id="candidate-cons"
@@ -286,7 +288,7 @@ export function CandidateForm({
 					onChange={(e) => setForm((f) => ({ ...f, cons: e.target.value }))}
 					rows={3}
 					className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-gray-400 focus:border-transparent resize-none"
-					placeholder="One con per line..."
+					placeholder={t("candidateForm.consPlaceholder")}
 				/>
 			</div>
 
@@ -296,7 +298,7 @@ export function CandidateForm({
 					htmlFor="candidate-url"
 					className="block text-sm font-medium text-gray-700 mb-1"
 				>
-					Product Link
+					{t("candidateForm.productLinkLabel")}
 				</label>
 				<input
 					id="candidate-url"
@@ -306,7 +308,7 @@ export function CandidateForm({
 						setForm((f) => ({ ...f, productUrl: e.target.value }))
 					}
 					className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-gray-400 focus:border-transparent"
-					placeholder="https://..."
+					placeholder={t("candidateForm.urlPlaceholder")}
 				/>
 				{errors.productUrl && (
 					<p className="mt-1 text-xs text-red-500">{errors.productUrl}</p>
@@ -321,10 +323,10 @@ export function CandidateForm({
 					className="flex-1 py-2.5 px-4 bg-gray-700 hover:bg-gray-800 disabled:opacity-50 text-white text-sm font-medium rounded-lg transition-colors"
 				>
 					{isPending
-						? "Saving..."
+						? t("common:actions.saving")
 						: mode === "add"
-							? "Add Candidate"
+							? t("candidateForm.addCandidate")
-							: "Save Changes"}
+							: t("candidateForm.saveChanges")}
 				</button>
 			</div>
 		</form>

src/client/components/CandidateListItem.tsx

@@ -1,6 +1,7 @@
 import { useNavigate } from "@tanstack/react-router";
 import { Reorder } from "framer-motion";
 import { useRef } from "react";
+import { useTranslation } from "react-i18next";
 import { useFormatters } from "../hooks/useFormatters";
 import type { CandidateDelta } from "../hooks/useImpactDeltas";
 import { LucideIcon } from "../lib/iconData";
@@ -61,6 +62,7 @@ export function CandidateListItem({
 	delta,
 	onDragEnd,
 }: CandidateListItemProps) {
+	const { t } = useTranslation("threads");
 	const isDragging = useRef(false);
 	const { weight, price } = useFormatters();
 	const navigate = useNavigate();
@@ -150,7 +152,7 @@ export function CandidateListItem({
 					/>
 					{(candidate.pros || candidate.cons) && (
 						<span className="inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium bg-purple-50 text-purple-700">
-							+/- Notes
+							{t("candidateCard.prosCons")}
 						</span>
 					)}
 				</div>
@@ -166,10 +168,10 @@ export function CandidateListItem({
 							openResolveDialog(candidate.threadId, candidate.id);
 						}}
 						className="px-2 py-0.5 flex items-center gap-1 rounded-full text-xs font-medium bg-amber-100/90 text-amber-700 hover:bg-amber-200 cursor-pointer"
-						title="Pick as winner"
+						title={t("candidateCard.pickAsWinner")}
 					>
 						<LucideIcon name="trophy" size={12} />
-						Winner
+						{t("candidateCard.winner")}
 					</button>
 				)}
 				{candidate.productUrl && (
@@ -180,7 +182,7 @@ export function CandidateListItem({
 							openExternalLink(candidate.productUrl as string);
 						}}
 						className="w-6 h-6 flex items-center justify-center rounded-full bg-gray-100/80 text-gray-400 hover:bg-gray-200 hover:text-gray-600 cursor-pointer"
-						title="Open product link"
+						title={t("candidateCard.openProductLink")}
 					>
 						<svg
 							className="w-3.5 h-3.5"
@@ -204,7 +206,7 @@ export function CandidateListItem({
 						openConfirmDeleteCandidate(candidate.id);
 					}}
 					className="w-6 h-6 flex items-center justify-center rounded-full bg-gray-100/80 text-gray-400 hover:bg-red-100 hover:text-red-500 cursor-pointer"
-					title="Delete candidate"
+					title={t("candidateCard.deleteCandidate")}
 				>
 					<svg
 						className="w-3.5 h-3.5"

src/client/components/ComparisonTable.tsx

@@ -1,4 +1,5 @@
 import { useMemo } from "react";
+import { useTranslation } from "react-i18next";
 import { useFormatters } from "../hooks/useFormatters";
 import type { CandidateDelta } from "../hooks/useImpactDeltas";
 import { LucideIcon } from "../lib/iconData";
@@ -33,17 +34,17 @@ interface ComparisonTableProps {
 	deltas?: Record<number, CandidateDelta>;
 }
 
-const STATUS_LABELS: Record<"researching" | "ordered" | "arrived", string> = {
-	researching: "Researching",
-	ordered: "Ordered",
-	arrived: "Arrived",
-};
-
 export function ComparisonTable({
 	candidates,
 	resolvedCandidateId,
 	deltas,
 }: ComparisonTableProps) {
+	const { t } = useTranslation("threads");
+	const STATUS_LABELS: Record<"researching" | "ordered" | "arrived", string> = {
+		researching: t("statusBadge.researching"),
+		ordered: t("statusBadge.ordered"),
+		arrived: t("statusBadge.arrived"),
+	};
 	const { weight, price } = useFormatters();
 	const openExternalLink = useUIStore((s) => s.openExternalLink);
 
@@ -113,7 +114,7 @@ export function ComparisonTable({
 	}> = [
 		{
 			key: "image",
-			label: "Image",
+			label: t("comparisonTable.image"),
 			render: (c) => (
 				<div
 					className="w-12 h-12 rounded-lg overflow-hidden flex items-center justify-center"
@@ -138,19 +139,19 @@ export function ComparisonTable({
 		},
 		{
 			key: "name",
-			label: "Name",
+			label: t("comparisonTable.name"),
 			render: (c) => (
 				<span className="text-sm font-medium text-gray-900">{c.name}</span>
 			),
 		},
 		{
 			key: "rank",
-			label: "Rank",
+			label: t("comparisonTable.rank"),
 			render: (_c, index) => <RankBadge rank={index + 1} />,
 		},
 		{
 			key: "weight",
-			label: "Weight",
+			label: t("comparisonTable.weight"),
 			render: (c) => {
 				const isBest = c.id === bestWeightId;
 				const delta = weightDeltas[c.id];
@@ -176,7 +177,7 @@ export function ComparisonTable({
 		},
 		{
 			key: "price",
-			label: "Price",
+			label: t("comparisonTable.price"),
 			render: (c) => {
 				const isBest = c.id === bestPriceId;
 				const delta = priceDeltas[c.id];
@@ -202,14 +203,14 @@ export function ComparisonTable({
 		},
 		{
 			key: "status",
-			label: "Status",
+			label: t("comparisonTable.status"),
 			render: (c) => (
 				<span className="text-xs text-gray-600">{STATUS_LABELS[c.status]}</span>
 			),
 		},
 		{
 			key: "link",
-			label: "Link",
+			label: t("comparisonTable.link"),
 			render: (c) =>
 				c.productUrl ? (
 					<button
@@ -217,7 +218,7 @@ export function ComparisonTable({
 						onClick={() => openExternalLink(c.productUrl as string)}
 						className="text-xs text-blue-500 hover:underline"
 					>
-						View
+						{t("comparisonTable.view")}
 					</button>
 				) : (
 					<span className="text-gray-300">—</span>
@@ -225,7 +226,7 @@ export function ComparisonTable({
 		},
 		{
 			key: "notes",
-			label: "Notes",
+			label: t("comparisonTable.notes"),
 			render: (c) =>
 				c.notes ? (
 					<p className="text-xs text-gray-700 whitespace-pre-line">{c.notes}</p>
@@ -235,7 +236,7 @@ export function ComparisonTable({
 		},
 		{
 			key: "pros",
-			label: "Pros",
+			label: t("comparisonTable.pros"),
 			render: (c) => {
 				if (!c.pros) return <span className="text-gray-300">—</span>;
 				const items = c.pros.split("\n").filter((s) => s.trim() !== "");
@@ -254,7 +255,7 @@ export function ComparisonTable({
 		},
 		{
 			key: "cons",
-			label: "Cons",
+			label: t("comparisonTable.cons"),
 			render: (c) => {
 				if (!c.cons) return <span className="text-gray-300">—</span>;
 				const items = c.cons.split("\n").filter((s) => s.trim() !== "");
@@ -342,7 +343,7 @@ export function ComparisonTable({
 						<>
 							<tr className="border-b border-gray-50">
 								<td className="sticky left-0 z-10 bg-white px-4 py-3 text-xs font-medium text-gray-500 uppercase tracking-wide w-28">
-									Weight Impact
+									{t("comparisonTable.weightImpact")}
 								</td>
 								{candidates.map((candidate) => {
 									const isWinner = candidate.id === resolvedCandidateId;
@@ -362,7 +363,7 @@ export function ComparisonTable({
 							</tr>
 							<tr className="border-b border-gray-50">
 								<td className="sticky left-0 z-10 bg-white px-4 py-3 text-xs font-medium text-gray-500 uppercase tracking-wide w-28">
-									Price Impact
+									{t("comparisonTable.priceImpact")}
 								</td>
 								{candidates.map((candidate) => {
 									const isWinner = candidate.id === resolvedCandidateId;

src/client/components/CreateThreadModal.tsx

@@ -1,9 +1,11 @@
 import { useEffect, useState } from "react";
+import { useTranslation } from "react-i18next";
 import { useCategories } from "../hooks/useCategories";
 import { useCreateThread } from "../hooks/useThreads";
 import { useUIStore } from "../stores/uiStore";
 
 export function CreateThreadModal() {
+	const { t } = useTranslation(["threads", "common"]);
 	const isOpen = useUIStore((s) => s.createThreadModalOpen);
 	const closeModal = useUIStore((s) => s.closeCreateThreadModal);
 
@@ -38,11 +40,11 @@ export function CreateThreadModal() {
 		e.preventDefault();
 		const trimmed = name.trim();
 		if (!trimmed) {
-			setError("Thread name is required");
+			setError(t("create.nameRequired"));
 			return;
 		}
 		if (categoryId === null) {
-			setError("Please select a category");
+			setError(t("create.selectCategory"));
 			return;
 		}
 		setError(null);
@@ -55,7 +57,7 @@ export function CreateThreadModal() {
 				},
 				onError: (err) => {
 					setError(
-						err instanceof Error ? err.message : "Failed to create thread",
+						err instanceof Error ? err.message : t("create.createFailed"),
 					);
 				},
 			},
@@ -77,7 +79,7 @@ export function CreateThreadModal() {
 				onClick={(e) => e.stopPropagation()}
 				onKeyDown={() => {}}
 			>
-				<h2 className="text-lg font-semibold text-gray-900 mb-4">New Thread</h2>
+				<h2 className="text-lg font-semibold text-gray-900 mb-4">{t("create.title")}</h2>
 
 				<form onSubmit={handleSubmit} className="space-y-4">
 					<div>
@@ -85,14 +87,14 @@ export function CreateThreadModal() {
 							htmlFor="thread-name"
 							className="block text-sm font-medium text-gray-700 mb-1"
 						>
-							Thread name
+							{t("create.threadName")}
 						</label>
 						<input
 							id="thread-name"
 							type="text"
 							value={name}
 							onChange={(e) => setName(e.target.value)}
-							placeholder="e.g. Lightweight sleeping bag"
+							placeholder={t("create.namePlaceholder")}
 							className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-gray-400 focus:border-transparent"
 						/>
 					</div>
@@ -102,7 +104,7 @@ export function CreateThreadModal() {
 							htmlFor="thread-category"
 							className="block text-sm font-medium text-gray-700 mb-1"
 						>
-							Category
+							{t("create.category")}
 						</label>
 						<select
 							id="thread-category"
@@ -126,14 +128,14 @@ export function CreateThreadModal() {
 							onClick={handleClose}
 							className="px-4 py-2 text-sm font-medium text-gray-700 bg-gray-100 hover:bg-gray-200 rounded-lg transition-colors"
 						>
-							Cancel
+							{t("common:actions.cancel")}
 						</button>
 						<button
 							type="submit"
 							disabled={createThread.isPending}
 							className="px-4 py-2 text-sm font-medium text-white bg-gray-700 hover:bg-gray-800 disabled:opacity-50 rounded-lg transition-colors"
 						>
-							{createThread.isPending ? "Creating..." : "Create Thread"}
+							{createThread.isPending ? t("common:actions.creating") : t("create.createThread")}
 						</button>
 					</div>
 				</form>

src/client/components/StatusBadge.tsx

@@ -1,13 +1,14 @@
 import { useEffect, useRef, useState } from "react";
+import { useTranslation } from "react-i18next";
 import { LucideIcon } from "../lib/iconData";
 
-const STATUS_CONFIG = {
+const STATUS_ICONS = {
-	researching: { icon: "search", label: "Researching" },
+	researching: "search",
-	ordered: { icon: "truck", label: "Ordered" },
+	ordered: "truck",
-	arrived: { icon: "check", label: "Arrived" },
+	arrived: "check",
 } as const;
 
-type CandidateStatus = keyof typeof STATUS_CONFIG;
+type CandidateStatus = keyof typeof STATUS_ICONS;
 
 interface StatusBadgeProps {
 	status: CandidateStatus;
@@ -15,10 +16,15 @@ interface StatusBadgeProps {
 }
 
 export function StatusBadge({ status, onStatusChange }: StatusBadgeProps) {
+	const { t } = useTranslation("threads");
 	const [isOpen, setIsOpen] = useState(false);
 	const containerRef = useRef<HTMLDivElement>(null);
 
-	const config = STATUS_CONFIG[status];
+	const STATUS_LABELS: Record<CandidateStatus, string> = {
+		researching: t("statusBadge.researching"),
+		ordered: t("statusBadge.ordered"),
+		arrived: t("statusBadge.arrived"),
+	};
 
 	useEffect(() => {
 		if (!isOpen) return;
@@ -56,14 +62,13 @@ export function StatusBadge({ status, onStatusChange }: StatusBadgeProps) {
 				}}
 				className="inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-xs font-medium bg-gray-100 text-gray-600 hover:bg-gray-200 transition-colors cursor-pointer"
 			>
-				<LucideIcon name={config.icon} size={14} className="text-gray-500" />
+				<LucideIcon name={STATUS_ICONS[status]} size={14} className="text-gray-500" />
-				{config.label}
+				{STATUS_LABELS[status]}
 			</button>
 
 			{isOpen && (
 				<div className="absolute right-0 top-full mt-1 z-20 bg-white border border-gray-200 rounded-lg shadow-lg py-1 min-w-[150px]">
-					{(Object.keys(STATUS_CONFIG) as CandidateStatus[]).map((key) => {
+					{(Object.keys(STATUS_ICONS) as CandidateStatus[]).map((key) => {
-						const option = STATUS_CONFIG[key];
 						const isActive = key === status;
 						return (
 							<button
@@ -79,12 +84,12 @@ export function StatusBadge({ status, onStatusChange }: StatusBadgeProps) {
 								}`}
 							>
 								<LucideIcon
-									name={option.icon}
+									name={STATUS_ICONS[key]}
 									size={14}
 									className={isActive ? "text-gray-700" : "text-gray-400"}
 								/>
 								<span className={isActive ? "text-gray-900" : "text-gray-600"}>
-									{option.label}
+									{STATUS_LABELS[key]}
 								</span>
 								{isActive && (
 									<LucideIcon

src/client/locales/en/threads.json

@@ -46,6 +46,64 @@
 		"candidates": "{{count}} candidates",
 		"candidates_one": "{{count}} candidate"
 	},
+	"candidateCard": {
+		"pickAsWinner": "Pick as winner",
+		"winner": "Winner",
+		"deleteCandidate": "Delete candidate",
+		"openProductLink": "Open product link",
+		"prosCons": "+/- Notes"
+	},
+	"candidateForm": {
+		"nameRequired": "Name *",
+		"weightLabel": "Weight (g)",
+		"categoryLabel": "Category",
+		"notesLabel": "Notes",
+		"prosLabel": "Pros",
+		"consLabel": "Cons",
+		"productLinkLabel": "Product Link",
+		"namePlaceholder": "e.g. Osprey Talon 22",
+		"weightPlaceholder": "e.g. 680",
+		"pricePlaceholder": "e.g. 129.99",
+		"notesPlaceholder": "Any additional notes...",
+		"prosPlaceholder": "One pro per line...",
+		"consPlaceholder": "One con per line...",
+		"urlPlaceholder": "https://...",
+		"addCandidate": "Add Candidate",
+		"saveChanges": "Save Changes"
+	},
+	"comparisonTable": {
+		"image": "Image",
+		"name": "Name",
+		"rank": "Rank",
+		"weight": "Weight",
+		"price": "Price",
+		"status": "Status",
+		"link": "Link",
+		"notes": "Notes",
+		"pros": "Pros",
+		"cons": "Cons",
+		"weightImpact": "Weight Impact",
+		"priceImpact": "Price Impact",
+		"view": "View"
+	},
+	"addToThread": {
+		"title": "Add to Thread",
+		"newThreadTitle": "New Thread + Candidate",
+		"thread": "Thread",
+		"threadName": "Thread name",
+		"newThread": "+ New Thread...",
+		"backToPicker": "Back to thread picker",
+		"addAsCandidate": "Add as Candidate",
+		"createAndAdd": "Create & Add",
+		"adding": "Adding...",
+		"failedToAdd": "Failed to add candidate",
+		"failedToCreate": "Failed to create thread"
+	},
+	"statusBadge": {
+		"researching": "Researching",
+		"ordered": "Ordered",
+		"arrived": "Arrived"
+	},
 	"planning": {
 		"title": "Planning Threads",
 		"emptyTitle": "Plan your next purchase",