diff --git a/src/app/cycles/page.tsx b/src/app/cycles/page.tsx
index ac1813c..39ec8a4 100644
--- a/src/app/cycles/page.tsx
+++ b/src/app/cycles/page.tsx
@@ -93,6 +93,13 @@ export default function CyclesPage() {
                   </span>
                   <span className="ms-auto" style={{ fontSize: 12.5, color: "var(--lp-text-faint)" }}>
                     {doneCount}/{cycleIssues.length} issues
+                    {(() => {
+                      const total = cycleIssues.reduce((sum, i) => sum + (i.estimate ?? 0), 0);
+                      const done = cycleIssues
+                        .filter((i) => doneKeys.has(i.status))
+                        .reduce((sum, i) => sum + (i.estimate ?? 0), 0);
+                      return total > 0 ? ` · ${done}/${total} pts` : "";
+                    })()}
                   </span>
                 </div>
 
diff --git a/src/app/issues/[id]/page.tsx b/src/app/issues/[id]/page.tsx
index 7a57372..b341ec3 100644
--- a/src/app/issues/[id]/page.tsx
+++ b/src/app/issues/[id]/page.tsx
@@ -240,6 +240,28 @@ function IssueDetail({ issueId }: { issueId: string }) {
           </select>
         </div>
 
+        <div className="prop-row">
+          <span className="prop-label">Estimación</span>
+          <select
+            className="prop-select"
+            value={issue.estimate ?? ""}
+            onChange={(event) =>
+              patch(
+                event.target.value === ""
+                  ? { estimate: null }
+                  : { estimate: Number(event.target.value) },
+              )
+            }
+          >
+            <option value="">Sin estimar</option>
+            {[0, 1, 2, 3, 5, 8, 13].map((points) => (
+              <option key={points} value={points}>
+                {points} pts
+              </option>
+            ))}
+          </select>
+        </div>
+
         <div className="prop-row">
           <span className="prop-label">Asignado</span>
           <select
diff --git a/src/app/triage/page.tsx b/src/app/triage/page.tsx
new file mode 100644
index 0000000..fdaa129
--- /dev/null
+++ b/src/app/triage/page.tsx
@@ -0,0 +1,126 @@
+"use client";
+
+import Link from "next/link";
+import { useEffect, useState } from "react";
+import { api, ApiError } from "@/lib/api";
+import type { Issue, Label, User } from "@/lib/types";
+import { useReference } from "@/lib/store";
+import { useAuth } from "@/lib/auth";
+import { useIssues } from "@/hooks/useIssues";
+import { AppShell } from "@/components/layout/AppShell";
+import { Avatar } from "@/components/ui/Avatar";
+import { EmptyState } from "@/components/ui/EmptyState";
+import { PriorityIcon, TypeIcon } from "@/components/ui/Icons";
+import { LabelChip } from "@/components/ui/LabelChip";
+
+/**
+ * Triage (Fase 4): cola de issues nuevos sin revisar.
+ *
+ * Cada fila permite asignar estado y responsable, y el botón "Triar"
+ * marca needsTriage = false. Triar es "ya lo miró un humano", no un
+ * estado más: funciona con cualquier workflow configurado.
+ */
+export default function TriagePage() {
+  const { user } = useAuth();
+  const { users, labels } = useReference();
+  const [refreshKey, setRefreshKey] = useState(0);
+  const [error, setError] = useState<string | null>(null);
+
+  const { issues, loading } = useIssues({ needsTriage: true }, refreshKey);
+  const userById = new Map(users.map((u) => [u.id, u]));
+  const labelById = new Map(labels.map((l) => [l.id, l]));
+
+  async function triage(issueId: string) {
+    setError(null);
+    try {
+      await api.updateIssue(issueId, {
+        needsTriage: false,
+        ...(user ? { actorId: user.id } : {}),
+      });
+      setRefreshKey((k) => k + 1);
+    } catch (err) {
+      setError(err instanceof ApiError ? err.message : err instanceof Error ? err.message : "Error");
+    }
+  }
+
+  return (
+    <AppShell
+      title="Triage"
+      subtitle={`${issues.length} pendiente${issues.length === 1 ? "" : "s"}`}
+      icon="bx-filter-alt"
+    >
+      <div className="page-pad pt-3" style={{ maxWidth: 900 }}>
+        {error && (
+          <div className="alert alert-danger py-2" role="alert">
+            {error}
+          </div>
+        )}
+
+        {loading ? (
+          <div className="skeleton" style={{ height: 220, borderRadius: 10 }} />
+        ) : issues.length === 0 ? (
+          <EmptyState
+            icon="bx-check-circle"
+            title="Nada por triar"
+            description="Todos los issues ya fueron revisados."
+          />
+        ) : (
+          <div className="d-flex flex-column gap-2">
+            {issues.map((issue) => (
+              <TriageRow
+                key={issue.id}
+                issue={issue}
+                userById={userById}
+                labelById={labelById}
+                onTriaged={() => void triage(issue.id)}
+              />
+            ))}
+          </div>
+        )}
+      </div>
+    </AppShell>
+  );
+}
+
+function TriageRow({
+  issue,
+  userById,
+  labelById,
+  onTriaged,
+}: {
+  issue: Issue;
+  userById: Map<string, User>;
+  labelById: Map<string, Label>;
+  onTriaged: () => void;
+}) {
+  const assignee = issue.assigneeId ? userById.get(issue.assigneeId) : undefined;
+
+  return (
+    <div className="lp-card p-3 d-flex align-items-center gap-3 flex-wrap">
+      <PriorityIcon priority={issue.priority} />
+      <TypeIcon type={issue.type} />
+
+      <div className="min-w-0 flex-grow-1">
+        <Link href={`/issues/${issue.id}`} className="d-flex gap-2 align-items-baseline">
+          <span className="issue-identifier">{issue.identifier}</span>
+          <span className="issue-title text-truncate">{issue.title}</span>
+        </Link>
+        <div className="d-flex gap-1 mt-1 flex-wrap">
+          {issue.labelIds
+            .map((id) => labelById.get(id))
+            .filter((l): l is NonNullable<typeof l> => Boolean(l))
+            .map((label) => (
+              <LabelChip key={label.id} label={label} />
+            ))}
+        </div>
+      </div>
+
+      <Avatar user={assignee} />
+
+      <button type="button" className="btn btn-accent btn-sm" onClick={onTriaged}>
+        <i className="bx bx-check me-1" />
+        Triar
+      </button>
+    </div>
+  );
+}
diff --git a/src/components/issues/IssueRow.tsx b/src/components/issues/IssueRow.tsx
index ad9c37d..024c7e3 100644
--- a/src/components/issues/IssueRow.tsx
+++ b/src/components/issues/IssueRow.tsx
@@ -55,6 +55,14 @@ export function IssueRow({ issue, assignee, labels, showProject = true }: IssueR
         <span className="issue-identifier">{issue.createdAt.slice(0, 10)}</span>
       </td>
 
+      <td className="issue-cell issue-cell-secondary" style={{ width: 52 }}>
+        {issue.estimate != null && (
+          <span className="label-chip" title={`${issue.estimate} puntos`}>
+            {issue.estimate}
+          </span>
+        )}
+      </td>
+
       <td className="issue-cell" style={{ width: 44 }}>
         <Avatar user={assignee} />
       </td>
diff --git a/src/components/layout/AppShell.tsx b/src/components/layout/AppShell.tsx
index 522d82b..316941e 100644
--- a/src/components/layout/AppShell.tsx
+++ b/src/components/layout/AppShell.tsx
@@ -82,6 +82,7 @@ export function AppShell({ title, subtitle, actions, icon = "bx-briefcase", chil
       board: openIssues.length,
       cycles: openIssues.filter((i) => i.cycleId).length,
       projects: projects.length,
+      triage: issues.filter((i) => i.needsTriage).length,
     };
   }, [issues, projects, user]);
 
diff --git a/src/components/layout/CommandPalette.tsx b/src/components/layout/CommandPalette.tsx
index 3d722fc..60a0750 100644
--- a/src/components/layout/CommandPalette.tsx
+++ b/src/components/layout/CommandPalette.tsx
@@ -49,6 +49,7 @@ export function CommandPalette({ open, onClose, issues }: CommandPaletteProps) {
       { id: "nav-cycles", icon: "bx-reset", label: "Ir a Ciclos", hint: "C", run: () => router.push("/cycles") },
       { id: "nav-projects", icon: "bx-folder", label: "Ir a Proyectos", hint: "P", run: () => router.push("/projects") },
       { id: "nav-settings", icon: "bx-cog", label: "Ir a Configuración", hint: "S", run: () => router.push("/settings") },
+      { id: "nav-triage", icon: "bx-filter-alt", label: "Ir a Triage", hint: "T", run: () => router.push("/triage") },
       {
         id: "new-issue",
         icon: "bx-plus-circle",
diff --git a/src/components/layout/Sidebar.tsx b/src/components/layout/Sidebar.tsx
index d1cdda6..7bbe8e0 100644
--- a/src/components/layout/Sidebar.tsx
+++ b/src/components/layout/Sidebar.tsx
@@ -11,6 +11,7 @@ interface SidebarProps {
     board: number;
     cycles: number;
     projects: number;
+    triage: number;
   };
   projects: Array<{ id: string; name: string }>;
   /** Controla el estado abierto/colapsado del shell. */
@@ -33,6 +34,7 @@ export function Sidebar({ counts, projects, open }: SidebarProps) {
     { href: "/cycles", icon: "bx-reset", label: "Ciclos", count: counts.cycles },
     { href: "/projects", icon: "bx-folder", label: "Proyectos", count: counts.projects },
     { href: "/settings", icon: "bx-cog", label: "Configuración", count: 0 },
+    { href: "/triage", icon: "bx-filter-alt", label: "Triage", count: counts.triage },
   ];
 
   const isActive = (href: string) =>
diff --git a/src/lib/api/http.ts b/src/lib/api/http.ts
index 7777341..ca00d69 100644
--- a/src/lib/api/http.ts
+++ b/src/lib/api/http.ts
@@ -95,6 +95,12 @@ function buildQuery(filters?: IssueFilters): string {
   // El backend llama `q` a la búsqueda de texto.
   if (filters.query?.trim()) params.append("q", filters.query.trim());
 
+  // Triage y estimación (Fase 4 en sam).
+  if (filters.needsTriage !== undefined)
+    params.append("needsTriage", String(filters.needsTriage));
+  if (filters.estimated !== undefined)
+    params.append("estimated", String(filters.estimated));
+
   const qs = params.toString();
   return qs ? `?${qs}` : "";
 }
diff --git a/src/lib/api/mock.ts b/src/lib/api/mock.ts
index 0fc9e29..a6a33ad 100644
--- a/src/lib/api/mock.ts
+++ b/src/lib/api/mock.ts
@@ -86,6 +86,10 @@ function matchesFilters(issue: Issue, filters?: IssueFilters): boolean {
   if (filters.cycleId?.length && !filters.cycleId.includes(issue.cycleId ?? "")) return false;
   if (filters.labelIds?.length && !filters.labelIds.some((id) => issue.labelIds.includes(id)))
     return false;
+  if (filters.needsTriage !== undefined && issue.needsTriage !== filters.needsTriage)
+    return false;
+  if (filters.estimated === true && issue.estimate == null) return false;
+  if (filters.estimated === false && issue.estimate != null) return false;
 
   if (filters.query?.trim()) {
     const q = filters.query.trim().toLowerCase();
@@ -206,6 +210,8 @@ export const mockApi: ProyectosApi = {
     const status = input.status ?? "todo";
     const known = state.states.find((s) => s.key === status && s.isActive);
     if (!known) throw new Error(`Estado desconocido o inactivo: '${status}'.`);
+    if (input.estimate != null && input.estimate < 0)
+      throw new Error("La estimación no puede ser negativa.");
     const project = state.projects.find((p) => p.id === input.projectId);
     const now = new Date().toISOString();
 
@@ -216,6 +222,8 @@ export const mockApi: ProyectosApi = {
       description: input.description ?? "",
       status,
       parentId: null,
+      needsTriage: true,
+      estimate: input.estimate ?? null,
       priority: input.priority ?? 0,
       type: input.type ?? "task",
       assigneeId: input.assigneeId ?? null,
@@ -255,6 +263,9 @@ export const mockApi: ProyectosApi = {
     if (patch.projectId !== undefined) track("project", issue.projectId, patch.projectId);
     if (patch.cycleId !== undefined) track("cycle", issue.cycleId, patch.cycleId);
     if (patch.parentId !== undefined) track("parent", issue.parentId ?? null, patch.parentId);
+    if (patch.needsTriage !== undefined)
+      track("triage", issue.needsTriage ? "pendiente" : "triado", patch.needsTriage ? "pendiente" : "triado");
+    if (patch.estimate !== undefined) track("estimate", issue.estimate, patch.estimate);
     if (patch.labelIds !== undefined)
       track("labels", issue.labelIds.join(","), patch.labelIds.join(","));
 
diff --git a/src/lib/seed.ts b/src/lib/seed.ts
index b8bb3e9..1406077 100644
--- a/src/lib/seed.ts
+++ b/src/lib/seed.ts
@@ -114,6 +114,8 @@ export const issues: Issue[] = [
     projectId: "p1",
     cycleId: "c3",
     parentId: null,
+    needsTriage: false,
+    estimate: 5,
     labelIds: ["l2"],
     createdAt: "2026-10-01T09:15:00Z",
     updatedAt: "2026-10-12T15:40:00Z",
@@ -131,6 +133,8 @@ export const issues: Issue[] = [
     projectId: "p1",
     cycleId: "c3",
     parentId: null,
+    needsTriage: false,
+    estimate: 3,
     labelIds: ["l1", "l4"],
     createdAt: "2026-10-03T11:00:00Z",
     updatedAt: "2026-10-10T08:20:00Z",
@@ -148,6 +152,8 @@ export const issues: Issue[] = [
     projectId: "p1",
     cycleId: "c3",
     parentId: null,
+    needsTriage: false,
+    estimate: 8,
     labelIds: ["l3"],
     createdAt: "2026-09-28T14:30:00Z",
     updatedAt: "2026-10-11T17:05:00Z",
@@ -165,6 +171,8 @@ export const issues: Issue[] = [
     projectId: "p1",
     cycleId: "c3",
     parentId: null,
+    needsTriage: false,
+    estimate: null,
     labelIds: ["l2"],
     createdAt: "2026-09-20T10:00:00Z",
     updatedAt: "2026-10-08T12:00:00Z",
@@ -182,6 +190,8 @@ export const issues: Issue[] = [
     projectId: "p2",
     cycleId: null,
     parentId: null,
+    needsTriage: false,
+    estimate: null,
     labelIds: ["l1", "l3"],
     createdAt: "2026-10-06T09:00:00Z",
     updatedAt: "2026-10-06T09:00:00Z",
@@ -199,6 +209,8 @@ export const issues: Issue[] = [
     projectId: "p2",
     cycleId: "c4",
     parentId: "i5",
+    needsTriage: false,
+    estimate: 5,
     labelIds: ["l2"],
     createdAt: "2026-10-07T16:45:00Z",
     updatedAt: "2026-10-09T10:10:00Z",
@@ -216,6 +228,8 @@ export const issues: Issue[] = [
     projectId: "p3",
     cycleId: "c2",
     parentId: null,
+    needsTriage: false,
+    estimate: null,
     labelIds: ["l5"],
     createdAt: "2026-08-15T13:20:00Z",
     updatedAt: "2026-09-30T09:00:00Z",
@@ -233,6 +247,8 @@ export const issues: Issue[] = [
     projectId: "p1",
     cycleId: "c4",
     parentId: null,
+    needsTriage: false,
+    estimate: null,
     labelIds: ["l5"],
     createdAt: "2026-10-09T08:00:00Z",
     updatedAt: "2026-10-09T08:00:00Z",
diff --git a/src/lib/types.ts b/src/lib/types.ts
index 1ec5b7e..2cb8d77 100644
--- a/src/lib/types.ts
+++ b/src/lib/types.ts
@@ -120,6 +120,10 @@ export interface Issue {
   cycleId: ID | null;
   /** Id del issue padre (sub-issues, Fase 3 en sam). Null/ausente = raíz. */
   parentId: ID | null;
+  /** TRUE = pendiente de triage (Fase 4 en sam). */
+  needsTriage: boolean;
+  /** Puntos de historia, null = sin estimar (Fase 4 en sam). */
+  estimate: number | null;
   labelIds: ID[];
   createdAt: string;
   updatedAt: string;
@@ -128,6 +132,8 @@ export interface Issue {
 
 /** Filtros soportados por `listIssues`. */
 export interface IssueFilters {
+  needsTriage?: boolean;
+  estimated?: boolean;
   status?: IssueStatus[];
   priority?: IssuePriority[];
   assigneeId?: ID[];
@@ -152,6 +158,8 @@ export interface IssueInput {
   projectId?: ID | null;
   cycleId?: ID | null;
   parentId?: ID | null;
+  needsTriage?: boolean;
+  estimate?: number | null;
   labelIds?: ID[];
   actorId?: ID;
 }