refactor(sales): consolidate pipeline stages + wire EOI auto-advance

The 8→9 stage refresh from earlier today only updated constants.ts and the DB —
20 component/service files still hardcoded the old enum, leaving labels blank,
filter dropdowns wrong, kanban columns mismatched, and the analytics funnel
silently dropping new-stage rows. The platform also never advanced
pipelineStage on EOI lifecycle events: documents.service.ts wrote eoiStatus
but left the user-visible stage stuck.

This commit closes both gaps:

  1. Single source of truth in src/lib/constants.ts — adds STAGE_LABELS,
     STAGE_BADGE, STAGE_DOT, STAGE_WEIGHTS, STAGE_TRANSITIONS plus
     stageLabel / stageBadgeClass / stageDotClass / safeStage /
     canTransitionStage helpers. components/clients/pipeline-constants.ts
     becomes a re-export shim so existing imports keep working.

  2. 18 stale-enum surfaces migrated — interest list (table, card, filters,
     form, stage picker), pipeline board, client card, berth interests tab,
     portal client interests page, dashboard pipeline / funnel / revenue-
     forecast charts, settings pipeline_weights default, dashboard.service
     weights, analytics.service funnel stages, alert-rules stale-interest
     filter, interest-scoring stage rank.

  3. Documents tab wired into interest detail — replaced the placeholder in
     interest-tabs.tsx with InterestDocumentsTab + InterestFilesTab so the
     EOI launcher is back where salespeople work.

  4. Auto-advance — new advanceStageIfBehind() in interests.service.ts
     (forward-only, no-op if interest is already past the target). Called
     from documents.service.ts on send (→ eoi_sent), Documenso completed
     webhook (→ eoi_signed), and manual signed-EOI upload (→ eoi_signed).

  5. Transition guard — canTransitionStage() blocks egregious skips
     (e.g. completed → open, open → contract_signed). Enforced in
     changeInterestStage before the DB write.

Tests updated to reflect the 9-stage model. tsc clean, vitest 832/832,
ESLint clean on every file touched.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/dashboard/pipeline-chart.tsx

@@ -1,19 +1,12 @@
 'use client';
 
 import { useQuery } from '@tanstack/react-query';
-import {
-  Bar,
-  BarChart,
-  CartesianGrid,
-  ResponsiveContainer,
-  Tooltip,
-  XAxis,
-  YAxis,
-} from 'recharts';
+import { Bar, BarChart, CartesianGrid, ResponsiveContainer, Tooltip, XAxis, YAxis } from 'recharts';
 
 import { apiFetch } from '@/lib/api/client';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { CardSkeleton } from '@/components/shared/loading-skeleton';
+import { stageLabel } from '@/lib/constants';
 import { WidgetErrorBoundary } from './widget-error-boundary';
 
 interface PipelineRow {
@@ -21,17 +14,6 @@ interface PipelineRow {
   count: number;
 }
 
-const STAGE_LABELS: Record<string, string> = {
-  open: 'Open',
-  details_sent: 'Details Sent',
-  in_communication: 'In Communication',
-  visited: 'Visited',
-  signed_eoi_nda: 'Signed EOI/NDA',
-  deposit_10pct: 'Deposit 10%',
-  contract: 'Contract',
-  completed: 'Completed',
-};
-
 function PipelineChartInner() {
   const { data, isLoading } = useQuery<PipelineRow[]>({
     queryKey: ['dashboard', 'pipeline'],
@@ -45,7 +27,7 @@ function PipelineChartInner() {
   }
 
   const chartData = (data ?? []).map((row) => ({
-    stage: STAGE_LABELS[row.stage] ?? row.stage,
+    stage: stageLabel(row.stage),
     count: row.count,
   }));