fix(status): render pipeline phase for legacy statuses (analyst_verified)

A case parked on a status the trimmed PHASES list dropped — but the agents
still set, e.g. `analyst_verified` (HEARTBEAT.md), `research_complete`
(legal-researcher) — rendered with NO active phase: phaseIndexOf returned -1,
so the pipeline stepper went fully blank and the chair couldn't see where the
case stood (reported on 1043-02-26, currently at analyst_verified).

Add LEGACY_STATUS_PHASE in case-status.ts mapping each legacy/intermediate
status to its display phase (analyst_verified/research_complete → "ניתוח וכיוון"),
and a single phaseIndexOf() exported from the SSoT. status-hero.tsx and
workflow-timeline.tsx both dropped their identical local phaseIndexOf (which had
the bug) and import the shared one — no parallel path (G2).

Display-only data-mapping fix; the stepper design is unchanged. Does NOT address
the root drift (agents still set analyst_verified) — that prompt-alignment is a
separate, carefully-sequenced follow-up needing cross-company agent sync.

Invariants: G2 (single phase-resolution path, legacy handled in the SSoT, no
new parallel logic). No backend / status-model change.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web-ui/src/components/cases/workflow-timeline.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { PHASES, type CaseStatus, type PhaseKey } from "@/lib/api/case-status";
+import { PHASES, phaseIndexOf, type CaseStatus, type PhaseKey } from "@/lib/api/case-status";
 import { STATUS_LABELS, STATUS_ICONS, STATUS_DESCRIPTIONS } from "@/components/cases/status-badge";
 import {
   FolderInput, ClipboardList, Brain, PenLine, CheckCircle2,
@@ -21,11 +21,6 @@ const PHASE_ICONS: Record<PhaseKey, LucideIcon> = {
   done:     CheckCircle2,
 };
 
-function phaseIndexOf(status?: CaseStatus): number {
-  if (!status) return -1;
-  return PHASES.findIndex((p) => p.statuses.includes(status));
-}
-
 export function WorkflowTimeline({ status }: { status?: CaseStatus }) {
   const currentIdx = phaseIndexOf(status);