refactor(ui): drive status from a single shared pipeline module

Introduces pipeline.ts (mirrors backend JobPipeline) as the one frontend
source of truth for canonical stages, synonym normalization, tone, and
localized labels. Replaces the status list/logic previously duplicated
across KanbanBoard, JobTable, AddJobModal and EditJobDialog.

- KanbanBoard/AddJobModal/EditJobDialog render from PIPELINE_STATUSES
- JobTable uses shared statusTone + statusLabel (status chips now
  localized; NB gets proper labels, English unchanged)
- Edit dialog status dropdown is now localized too
- 5 unit tests; full frontend suite green (19 suites / 41 tests)

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

job-tracker-ui/src/components/AddJobModal.tsx

@@ -30,6 +30,7 @@ import { Company, JobImportResult } from "../types";
 import { invalidateCompaniesCache, useCompanies } from "../hooks/useCompanies";
 import { useToast } from "../toast";
 import { useI18n } from "../i18n/I18nProvider";
+import { PIPELINE_STATUSES, statusLabel as pipelineStatusLabel } from "../pipeline";
 import TagsInput from "./TagsInput";
 
 interface Props {
@@ -60,7 +61,6 @@ type CreatedJobResponse = {
 type AttachmentBucketKey = "resume" | "coverLetter" | "portfolio" | "other";
 type AttachmentBuckets = Record<AttachmentBucketKey, File[]>;
 
-const STATUS_OPTIONS = ["Applied", "Waiting", "Interview", "Offer", "Rejected", "Ghosted"] as const;
 const ACCEPTED_DOCUMENT_TYPES = ".pdf,.doc,.docx,.txt,.md,image/*,application/pdf,application/msword,application/vnd.openxmlformats-officedocument.wordprocessingml.document,text/plain,text/markdown";
 const FIELD_SX = { "& .MuiInputBase-root": { minHeight: 56 } };
 const PICKER_TEXT_FIELD_PROPS = { fullWidth: true, sx: FIELD_SX };
@@ -115,7 +115,7 @@ export default function AddJobModal({ open, onClose, onCreated }: Props) {
 
   const [dateApplied, setDateApplied] = useState(() => getTodayIso());
   const [jobTitle, setJobTitle] = useState("");
-  const [status, setStatus] = useState<(typeof STATUS_OPTIONS)[number]>("Applied");
+  const [status, setStatus] = useState<(typeof PIPELINE_STATUSES)[number]>("Applied");
   const [location, setLocation] = useState("");
   const [salary, setSalary] = useState("");
   const [salaryMin, setSalaryMin] = useState("");
@@ -350,18 +350,6 @@ export default function AddJobModal({ open, onClose, onCreated }: Props) {
     }));
   };
 
-  const statusLabel = (value: typeof STATUS_OPTIONS[number]) => {
-    const map = {
-      Applied: t("statusApplied"),
-      Waiting: t("statusWaiting"),
-      Interview: t("statusInterview"),
-      Offer: t("statusOffer"),
-      Rejected: t("statusRejected"),
-      Ghosted: t("statusGhosted"),
-    } as const;
-    return map[value];
-  };
-
   const filesLabel = (files: File[]) => {
     if (files.length === 0) return t("addJobModalNoFilesSelected");
     if (files.length === 1) return files[0].name;
@@ -479,9 +467,9 @@ export default function AddJobModal({ open, onClose, onCreated }: Props) {
           />
 
           <TextField select label={t("addJobModalStatus")} value={status} onChange={(e) => setStatus(e.target.value as any)} sx={FIELD_SX}>
-            {STATUS_OPTIONS.map((s) => (
+            {PIPELINE_STATUSES.map((s) => (
               <MenuItem key={s} value={s}>
-                {statusLabel(s)}
+                {pipelineStatusLabel(t, s)}
               </MenuItem>
             ))}
           </TextField>