diff --git a/apps/dashboard/app/(tenant)/agents/page.tsx b/apps/dashboard/app/(tenant)/agents/page.tsx
index bbb2ad1..39e8010 100644
--- a/apps/dashboard/app/(tenant)/agents/page.tsx
+++ b/apps/dashboard/app/(tenant)/agents/page.tsx
@@ -1,6 +1,7 @@
 import type { Metadata } from "next";
 import Link from "next/link";
 import { CopyPill } from "@ainfera/ui";
+import { Crumbs } from "@/components/v15/Crumbs";
 import { getOwnerHandle } from "@/lib/ainfera/proxy";
 import { listAgents } from "@/lib/v15/api";
 
@@ -13,6 +14,14 @@ export default async function AgentsPage() {
 
   return (
     <>
+      {/* AIN-251 W4 · shared <Crumbs /> for cross-page parity. */}
+      <Crumbs
+        path={[
+          { label: "workspace", href: "/dashboard" },
+          { label: "agents" },
+        ]}
+      />
+
       <div className="title-row">
         <div>
           <h1>Agents</h1>
diff --git a/apps/dashboard/app/(tenant)/inferences/[id]/InferenceDetailClient.tsx b/apps/dashboard/app/(tenant)/inferences/[id]/InferenceDetailClient.tsx
index 4502527..beadccc 100644
--- a/apps/dashboard/app/(tenant)/inferences/[id]/InferenceDetailClient.tsx
+++ b/apps/dashboard/app/(tenant)/inferences/[id]/InferenceDetailClient.tsx
@@ -215,6 +215,74 @@ export function InferenceDetailClient({ inferenceId, initial }: Props) {
         ) : null}
       </div>
 
+      {/* AIN-266 W3 · candidates card — the routing decision artifact.
+       * Surfaces every model Ainfera Inference considered for this call,
+       * the rank order, q_prior, projected cost, and drop reasons.
+       * Renders only when the api returned a non-empty candidates list
+       * (null on pre-§16 rows + pinned-passthroughs that bypass the
+       * brain). Authed-tenant-only on the wire (§D3 lock). */}
+      {inf.candidates && inf.candidates.length > 0 ? (
+        <div className="rounded-lg border border-hairline-strong bg-bg-elev">
+          <div className="flex items-center justify-between border-b border-hairline-strong px-6 py-3">
+            <p className="font-mono text-xs uppercase tracking-[0.15em] text-ink-muted">
+              Candidates ({inf.candidates.length})
+            </p>
+            <span className="font-mono text-[10px] uppercase tracking-[0.18em] text-ink-faint">
+              the decision · ranked
+            </span>
+          </div>
+          <div className="overflow-x-auto">
+            <table className="w-full font-mono text-xs">
+              <thead className="border-b border-hairline">
+                <tr className="text-ink-faint">
+                  <th className="px-6 py-2 text-left font-normal uppercase tracking-chip text-[10px]">#</th>
+                  <th className="px-3 py-2 text-left font-normal uppercase tracking-chip text-[10px]">Model</th>
+                  <th className="px-3 py-2 text-left font-normal uppercase tracking-chip text-[10px]">Brand</th>
+                  <th className="px-3 py-2 text-right font-normal uppercase tracking-chip text-[10px]">q_prior</th>
+                  <th className="px-3 py-2 text-right font-normal uppercase tracking-chip text-[10px]">proj. cost</th>
+                  <th className="px-3 py-2 text-left font-normal uppercase tracking-chip text-[10px]">eligible</th>
+                  <th className="px-6 py-2 text-left font-normal uppercase tracking-chip text-[10px]">drop reason</th>
+                </tr>
+              </thead>
+              <tbody>
+                {inf.candidates.map((c, i) => {
+                  const chosen = c.model_slug === inf.model_used;
+                  return (
+                    <tr
+                      key={`${c.model_id ?? c.model_slug ?? i}-${i}`}
+                      className={
+                        chosen
+                          ? "bg-accent/5 border-l-2 border-accent"
+                          : "hover:bg-bg-card"
+                      }
+                    >
+                      <td className="px-6 py-2 text-ink-muted">{c.rank ?? i + 1}</td>
+                      <td className="px-3 py-2 text-ink">
+                        {c.model_slug ?? "—"}
+                        {chosen ? (
+                          <span className="ml-2 rounded bg-accent/15 px-1.5 py-0.5 text-[9px] font-medium uppercase tracking-chip text-accent">
+                            chosen
+                          </span>
+                        ) : null}
+                      </td>
+                      <td className="px-3 py-2 text-ink-muted">{c.brand_slug ?? "—"}</td>
+                      <td className="px-3 py-2 text-right text-ink">{c.q_prior ?? "—"}</td>
+                      <td className="px-3 py-2 text-right text-ink">
+                        {c.projected_cost_usd ? fmtCost(c.projected_cost_usd) : "—"}
+                      </td>
+                      <td className="px-3 py-2 text-ink-muted">
+                        {c.m_allowed === true ? "yes" : c.m_allowed === false ? "no" : "—"}
+                      </td>
+                      <td className="px-6 py-2 text-ink-muted">{c.drop_reason ?? "—"}</td>
+                    </tr>
+                  );
+                })}
+              </tbody>
+            </table>
+          </div>
+        </div>
+      ) : null}
+
       {/* Audit chain block — AIN-182 §4 "Verify with curl" requirement. */}
       <div className="rounded-lg border border-hairline-strong bg-bg-elev">
         <div className="flex items-center justify-between border-b border-hairline-strong px-6 py-3">
diff --git a/apps/dashboard/app/(tenant)/inferences/[id]/types.ts b/apps/dashboard/app/(tenant)/inferences/[id]/types.ts
index 327b044..1cb48f9 100644
--- a/apps/dashboard/app/(tenant)/inferences/[id]/types.ts
+++ b/apps/dashboard/app/(tenant)/inferences/[id]/types.ts
@@ -35,4 +35,25 @@ export type InferenceDetail = {
   policy_version?: string | null;
   cell?: string | null;
   routing_rationale?: string | null;
+  /** AIN-266 W3 · routing candidate set. Mirrors §16
+   *  routing_outcomes.candidates JSONB. NULL on pre-2026-05-21 rows +
+   *  pinned-passthrough calls. AUTHED-tenant-only on the wire (§D3 lock
+   *  — never on /v1/audit/public). */
+  candidates?: InferenceCandidate[] | null;
+};
+
+/** One row of the §16 candidate set. Keys mirror the JSONB shape on
+ *  routing_outcomes exactly. Decimals come over as strings to preserve
+ *  precision through JSON. */
+export type InferenceCandidate = {
+  model_id?: string | null;
+  model_slug?: string | null;
+  brand_slug?: string | null;
+  q_prior?: string | null;
+  price_in_per_mtok_usd?: string | null;
+  price_out_per_mtok_usd?: string | null;
+  m_allowed?: boolean | null;
+  projected_cost_usd?: string | null;
+  drop_reason?: string | null;
+  rank?: number | null;
 };
diff --git a/apps/dashboard/app/(tenant)/inferences/page.tsx b/apps/dashboard/app/(tenant)/inferences/page.tsx
index 16785a8..5bd71c0 100644
--- a/apps/dashboard/app/(tenant)/inferences/page.tsx
+++ b/apps/dashboard/app/(tenant)/inferences/page.tsx
@@ -1,5 +1,6 @@
 import type { Metadata } from "next";
 import Link from "next/link";
+import { Crumbs } from "@/components/v15/Crumbs";
 import { getOwnerHandle } from "@/lib/ainfera/proxy";
 import { publicAuditFeed, publicLeaderboard } from "@/lib/v15/api";
 
@@ -25,15 +26,14 @@ export default async function InferencesIndexPage() {
 
   return (
     <>
-      <div className="crumbs">
-        <div className="l">
-          <div className="path">
-            <Link href="/dashboard">workspace</Link>
-            <span className="sep">/</span>
-            <span className="here">inferences</span>
-          </div>
-        </div>
-      </div>
+      {/* AIN-251 W4 · shared <Crumbs /> for cross-page parity. */}
+      <Crumbs
+        path={[
+          { label: "workspace", href: "/dashboard" },
+          { label: "inferences" },
+        ]}
+      />
+
 
       <div className="title-row">
         <div>
diff --git a/apps/dashboard/app/(tenant)/workflows/page.tsx b/apps/dashboard/app/(tenant)/workflows/page.tsx
index de8d940..ced96a9 100644
--- a/apps/dashboard/app/(tenant)/workflows/page.tsx
+++ b/apps/dashboard/app/(tenant)/workflows/page.tsx
@@ -1,5 +1,6 @@
 import type { Metadata } from "next";
 import Link from "next/link";
+import { Crumbs } from "@/components/v15/Crumbs";
 import { getOwnerHandle } from "@/lib/ainfera/proxy";
 import { listWorkflows } from "@/lib/v15/api";
 
@@ -12,6 +13,14 @@ export default async function WorkflowsPage() {
 
   return (
     <>
+      {/* AIN-251 W4 · shared <Crumbs /> for cross-page parity. */}
+      <Crumbs
+        path={[
+          { label: "workspace", href: "/dashboard" },
+          { label: "workflows" },
+        ]}
+      />
+
       <div className="title-row">
         <div>
           <h1>Workflows</h1>