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/lib/services/interest-scoring.service.ts

@@ -6,6 +6,7 @@ import { interests, interestNotes } from '@/lib/db/schema/interests';
 import { reminders } from '@/lib/db/schema/operations';
 import { emailThreads } from '@/lib/db/schema/email';
 import { logger } from '@/lib/logger';
+import { PIPELINE_STAGES } from '@/lib/constants';
 
 // ─── Types ────────────────────────────────────────────────────────────────────
 
@@ -42,19 +43,8 @@ function scorePipelineAge(createdAt: Date): number {
 }
 
 function scoreStageSpeed(createdAt: Date, pipelineStage: string): number {
-  // Approximate stage index based on known pipeline order
-  const STAGE_ORDER: Record<string, number> = {
-    open: 0,
-    details_sent: 1,
-    in_communication: 2,
-    visited: 3,
-    signed_eoi_nda: 4,
-    deposit_10pct: 5,
-    contract: 6,
-    completed: 7,
-  };
-
-  const stageIndex = STAGE_ORDER[pipelineStage] ?? 0;
+  const idx = PIPELINE_STAGES.indexOf(pipelineStage as (typeof PIPELINE_STAGES)[number]);
+  const stageIndex = idx === -1 ? 0 : idx;
   if (stageIndex === 0) {
     // Still at open — no progression
     return 0;