feat(issues): S4b frontend — open-issues lists + issue plumbing

- types/note.ts: Note gains systems? + arose_from_id?; TaskKind includes 'issue'.
- stores/tasks.ts: create/update accept IssueFields (kind/system_ids/arose_from_id).
- api/systems.ts: getProjectIssues + TaskLike.
- DashboardView.vue: 'Open issues' rail section from dashboard.open_issues
  (links to /tasks/<id>, project + status).
- SystemsSection.vue (project Systems tab): 'Open issues' list via getProjectIssues,
  with system chips, links to /tasks/<id>. Both reuse existing CSS tokens.

Issue-editor controls (kind selector / system multi-select / arose-from picker
in WorkspaceTaskPanel) are the remaining S4b piece. NEEDS operator browser
verification (CI typechecks only).

Refs plan 825 (S4b frontend — lists).

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

frontend/src/api/systems.ts

@@ -42,3 +42,23 @@ export async function updateSystem(
 export async function deleteSystem(projectId: number, systemId: number): Promise<void> {
   return apiDelete(`/api/projects/${projectId}/systems/${systemId}`);
 }
+
+// Lightweight issue shape returned by the project-issues list endpoint.
+export interface TaskLike {
+  id: number;
+  title: string;
+  status: string;
+  priority: string;
+  systems?: System[];
+  updated_at?: string | null;
+}
+
+export async function getProjectIssues(
+  projectId: number,
+  openOnly = true,
+): Promise<TaskLike[]> {
+  const data = await apiGet<{ issues: TaskLike[] }>(
+    `/api/projects/${projectId}/issues?open_only=${openOnly}`,
+  );
+  return data.issues;
+}

frontend/src/components/SystemsSection.vue

@@ -2,7 +2,8 @@
 import { ref, computed, onMounted, watch } from "vue";
 import { useSystemsStore } from "@/stores/systems";
 import { useToastStore } from "@/stores/toast";
-import type { System } from "@/api/systems";
+import { getProjectIssues } from "@/api/systems";
+import type { System, TaskLike } from "@/api/systems";
 import { Pencil, Trash2, Archive, ArchiveRestore } from "lucide-vue-next";
 
 const props = defineProps<{ projectId: number }>();
@@ -12,6 +13,7 @@ const toast = useToastStore();
 
 const error = ref<string | null>(null);
 const showArchived = ref(false);
+const issues = ref<TaskLike[]>([]);
 
 // Create state
 const showCreate = ref(false);
@@ -42,6 +44,11 @@ async function load() {
   } catch {
     error.value = "Failed to load systems.";
   }
+  try {
+    issues.value = await getProjectIssues(props.projectId);
+  } catch {
+    issues.value = [];
+  }
 }
 
 onMounted(load);
@@ -138,6 +145,22 @@ async function confirmDelete() {
 
 <template>
   <div class="systems-section">
+    <!-- Open issues -->
+    <div v-if="issues.length" class="open-issues">
+      <div class="open-issues-label">⚠ Open issues ({{ issues.length }})</div>
+      <ul class="issue-list">
+        <li v-for="issue in issues" :key="issue.id" class="issue-item">
+          <router-link :to="`/tasks/${issue.id}`" class="issue-link">
+            <span class="issue-mark" :class="`imk-${issue.status}`">{{ issue.status === 'in_progress' ? '▸' : '○' }}</span>
+            <span class="issue-name">{{ issue.title }}</span>
+            <span v-if="issue.systems && issue.systems.length" class="issue-systems">
+              <span v-for="s in issue.systems" :key="s.id" class="issue-sys-chip">{{ s.name }}</span>
+            </span>
+          </router-link>
+        </li>
+      </ul>
+    </div>
+
     <!-- Toolbar -->
     <div class="systems-toolbar">
       <button v-if="!showCreate" class="btn-add-system" @click="openCreate">
@@ -300,6 +323,18 @@ async function confirmDelete() {
 <style scoped>
 .systems-section { display: flex; flex-direction: column; gap: 0.75rem; }
 
+/* ── Open issues ──────────────────────────────────────────────── */
+.open-issues { display: flex; flex-direction: column; gap: 0.35rem; }
+.open-issues-label { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-text-muted); }
+.issue-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.2rem; }
+.issue-link { display: flex; align-items: center; gap: 0.5rem; padding: 0.35rem 0.5rem; border-radius: var(--radius-sm); text-decoration: none; color: var(--color-text); font-size: 0.85rem; }
+.issue-link:hover { background: var(--color-bg-secondary); }
+.issue-mark { color: var(--color-text-muted); flex-shrink: 0; }
+.issue-mark.imk-in_progress { color: var(--color-primary); }
+.issue-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.issue-systems { display: flex; gap: 0.25rem; flex-shrink: 0; flex-wrap: wrap; }
+.issue-sys-chip { font-size: 0.66rem; color: var(--color-text-secondary); background: var(--color-bg-secondary); border-radius: 999px; padding: 0.05rem 0.4rem; }
+
 /* ── Toolbar ──────────────────────────────────────────────────── */
 .systems-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
 .btn-add-system {

frontend/src/stores/tasks.ts

@@ -3,6 +3,16 @@ import { defineStore } from "pinia";
 import { apiGet, apiPost, apiPut, apiPatch, apiDelete } from "@/api/client";
 import { useToastStore } from "@/stores/toast";
 import type { Task, TaskStatus, TaskPriority, StartPlanningResult } from "@/types/task";
+import type { TaskKind } from "@/types/note";
+
+// Issues + Systems write-only fields accepted by the task create/update API.
+// `kind` selects work/plan/issue; system_ids / arose_from_id are not mirrored
+// 1:1 on the Task model (the read side exposes `systems` + `arose_from_id`).
+interface IssueFields {
+  kind?: TaskKind;
+  system_ids?: number[];
+  arose_from_id?: number | null;
+}
 
 // Single-task + mutation surface. The list/filter/sort/pagination surface that
 // backed the removed /tasks list view was dropped in the 2026-06-02 drift-audit
@@ -34,7 +44,7 @@ export const useTasksStore = defineStore("tasks", () => {
     milestone_id?: number | null;
     parent_id?: number | null;
     recurrence_rule?: Record<string, unknown> | null;
-  }): Promise<Task> {
+  } & IssueFields): Promise<Task> {
     try {
       return await apiPost<Task>("/api/tasks", data);
     } catch (e) {
@@ -47,7 +57,7 @@ export const useTasksStore = defineStore("tasks", () => {
     id: number,
     data: Partial<
       Pick<Task, "title" | "body" | "tags" | "status" | "priority" | "due_date" | "project_id" | "milestone_id" | "parent_id" | "recurrence_rule">
-    >
+    > & IssueFields
   ): Promise<Task> {
     try {
       const task = await apiPut<Task>(`/api/tasks/${id}`, data);

frontend/src/types/note.ts

@@ -1,5 +1,8 @@
+import type { System } from "@/api/systems";
+
 export type TaskStatus = "todo" | "in_progress" | "done" | "cancelled";
 export type TaskPriority = "none" | "low" | "medium" | "high";
+export type TaskKind = "work" | "plan" | "issue";
 export type NoteType = "note" | "person" | "place" | "list" | "process";
 
 export interface Note {
@@ -22,7 +25,9 @@ export interface Note {
   recurrence_next_spawn_at: string | null;
   is_task: boolean;
   note_type: NoteType;
-  task_kind?: "work" | "plan";
+  task_kind?: TaskKind;
+  systems?: System[];
+  arose_from_id?: number | null;
   metadata: Record<string, string>;
   created_at: string;
   updated_at: string;

frontend/src/views/DashboardView.vue

@@ -13,10 +13,12 @@ interface ActiveProject {
 interface DoneItem { id: number; title: string; project_title: string | null; completed_at: string }
 interface UpcomingEvent { id: number; title: string; start_dt: string | null; all_day: boolean }
 interface WeekStats { completed_this_week: number; open_total: number; in_progress: number; active_plans: number }
+interface IssueRow { id: number; title: string; status: string; priority: string; project_id: number | null; project_title: string | null }
 interface DashboardData {
   active_projects: ActiveProject[];
   recently_completed: DoneItem[];
   upcoming_events: UpcomingEvent[];
+  open_issues: IssueRow[];
   week_stats: WeekStats;
 }
 
@@ -29,7 +31,7 @@ onMounted(async () => {
   try {
     data.value = await apiGet<DashboardData>("/api/dashboard");
   } catch {
-    data.value = { active_projects: [], recently_completed: [], upcoming_events: [], week_stats: { completed_this_week: 0, open_total: 0, in_progress: 0, active_plans: 0 } };
+    data.value = { active_projects: [], recently_completed: [], upcoming_events: [], open_issues: [], week_stats: { completed_this_week: 0, open_total: 0, in_progress: 0, active_plans: 0 } };
   } finally {
     loading.value = false;
   }
@@ -132,6 +134,22 @@ function fmtEvent(e: UpcomingEvent): string {
 
         <!-- Right rail -->
         <aside class="dash-rail">
+          <template v-if="data.open_issues.length">
+            <div class="dash-label">⚠ Open issues</div>
+            <div class="rail-card issues-card">
+              <router-link
+                v-for="i in data.open_issues"
+                :key="i.id"
+                :to="`/tasks/${i.id}`"
+                class="issue-row"
+              >
+                <span class="issue-mark" :class="`imk-${i.status}`">{{ i.status === 'in_progress' ? '▸' : '○' }}</span>
+                <span class="issue-title">{{ i.title }}</span>
+                <span class="issue-meta">{{ i.project_title || '—' }}</span>
+              </router-link>
+            </div>
+          </template>
+
           <div class="dash-label">Upcoming · 7 days</div>
           <div class="rail-card">
             <template v-if="data.upcoming_events.length">
@@ -240,5 +258,13 @@ function fmtEvent(e: UpcomingEvent): string {
 .qa-btn { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 8px; padding: 6px 12px; font-size: 0.82rem; color: var(--color-text); text-decoration: none; }
 .qa-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
 
+.issues-card { display: flex; flex-direction: column; gap: 0.1rem; padding: 0.4rem 0.45rem; }
+.issue-row { display: flex; align-items: center; gap: 0.5rem; padding: 0.35rem 0.4rem; border-radius: 7px; text-decoration: none; color: var(--color-text); font-size: 0.85rem; }
+.issue-row:hover { background: var(--color-hover); }
+.issue-mark { color: var(--color-muted); flex-shrink: 0; }
+.issue-mark.imk-in_progress { color: var(--color-primary); }
+.issue-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.issue-meta { font-size: 0.72rem; color: var(--color-muted); white-space: nowrap; flex-shrink: 0; }
+
 @media (max-width: 760px) { .dash-cols { flex-direction: column; } }
 </style>