From a520d54bcfab5d051f22b49becd8064cb51cc65f Mon Sep 17 00:00:00 2001
From: Lars <Lars@stommer.de>
Date: Sun, 5 Jul 2026 17:39:18 +0200
Subject: [PATCH] =?UTF-8?q?AP1.1b:=20Vorhaben-Detail=20als=20Steuerungsfl?=
 =?UTF-8?q?=C3=A4che=20=E2=80=94=20Action-Hub=20statt=20paralleler=20Liste?=
 =?UTF-8?q?n?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Leitfrage oben, Maßnahmen mit verknüpftem Kontext aus dem Snapshot, vollständiges Meilenstein-Formular, Backlog/Entscheidungen/Nachweise unter Erweitert. Version 0.11.2-ap1.1b.
---
 backend/version.py                            |   2 +-
 frontend/package.json                         |   2 +-
 frontend/src/components/ActionHubCard.jsx     | 173 ++++++++++
 frontend/src/components/BlockersSection.jsx   |  22 +-
 .../src/components/CollapsibleSection.jsx     |  29 ++
 .../src/components/InitiativeActionsHub.jsx   | 103 ++++++
 frontend/src/components/MilestonesSection.jsx |  63 +++-
 .../src/components/SteeringSnapshotPanel.jsx  | 196 ++++++------
 frontend/src/pages/InitiativeDetailPage.jsx   | 299 ++++++------------
 frontend/src/styles/components.css            | 277 ++++++++++++++++
 10 files changed, 852 insertions(+), 314 deletions(-)
 create mode 100644 frontend/src/components/ActionHubCard.jsx
 create mode 100644 frontend/src/components/CollapsibleSection.jsx
 create mode 100644 frontend/src/components/InitiativeActionsHub.jsx

diff --git a/backend/version.py b/backend/version.py
index f7db55d..e5b558f 100644
--- a/backend/version.py
+++ b/backend/version.py
@@ -1,3 +1,3 @@
-APP_VERSION = "0.11.1-ap1.1"
+APP_VERSION = "0.11.2-ap1.1b"
 DB_SCHEMA_VERSION = "009"
 APP_NAME = "jinkendo-kairo"
diff --git a/frontend/package.json b/frontend/package.json
index d052422..f37e4a7 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "kairo-jinkendo-frontend",
-  "version": "0.11.1-ap1.1",
+  "version": "0.11.2-ap1.1b",
   "private": true,
   "type": "module",
   "scripts": {
diff --git a/frontend/src/components/ActionHubCard.jsx b/frontend/src/components/ActionHubCard.jsx
new file mode 100644
index 0000000..ebb1be7
--- /dev/null
+++ b/frontend/src/components/ActionHubCard.jsx
@@ -0,0 +1,173 @@
+import { ACTION_STATUSES, ACTION_STATUS_LABELS } from '../constants/status.js'
+import { StatusBadge } from './StatusBadge.jsx'
+import { PriorityBadge } from './PriorityBadge.jsx'
+import { ActionForm } from './ActionForm.jsx'
+
+function formatDue(iso) {
+  if (!iso) return null
+  try {
+    return new Date(iso).toLocaleString('de-DE', {
+      day: '2-digit',
+      month: '2-digit',
+      year: 'numeric',
+      hour: '2-digit',
+      minute: '2-digit',
+    })
+  } catch {
+    return iso
+  }
+}
+
+function LinkedItems({ title, items, renderItem }) {
+  if (!items?.length) return null
+  return (
+    <div className="action-hub-linked">
+      <h4 className="action-hub-linked-title">{title}</h4>
+      <ul className="action-hub-linked-list">
+        {items.map((item) => (
+          <li key={item.id}>{renderItem(item)}</li>
+        ))}
+      </ul>
+    </div>
+  )
+}
+
+export function ActionHubCard({
+  action,
+  context,
+  editing,
+  onEdit,
+  onCancelEdit,
+  onSubmitEdit,
+  onQuickStatus,
+  onCreateBlocker,
+  canManage,
+  canManageBlocker,
+  formBusy,
+  actors,
+  actorsLoading,
+  actorsError,
+  actorsUsedFallback,
+  onReloadActors,
+}) {
+  const due = formatDue(action.due_at)
+  const isBlocked = action.status === 'blocked' || context?.has_open_blocker
+
+  if (editing) {
+    return (
+      <article className="action-hub-card action-hub-card--editing">
+        <ActionForm
+          initial={action}
+          actors={actors}
+          actorsLoading={actorsLoading}
+          actorsError={actorsError}
+          actorsUsedFallback={actorsUsedFallback}
+          onReloadActors={onReloadActors}
+          onSubmit={onSubmitEdit}
+          onCancel={onCancelEdit}
+          busy={formBusy}
+          submitLabel="Speichern"
+        />
+      </article>
+    )
+  }
+
+  return (
+    <article
+      className={`action-hub-card${isBlocked ? ' action-hub-card--blocked' : ''}`}
+    >
+      <header className="action-hub-card-header">
+        <div className="action-hub-card-title-row">
+          <h3 className="action-hub-card-title">{action.title}</h3>
+          <div className="action-hub-card-badges">
+            <StatusBadge status={action.status} />
+            <PriorityBadge priority={action.priority} />
+          </div>
+        </div>
+        {action.description && (
+          <p className="action-hub-card-desc">{action.description}</p>
+        )}
+        <div className="action-hub-card-meta muted">
+          {action.assigned_actor_ids?.length > 0 && (
+            <span>{action.assigned_actor_ids.length} zugewiesen</span>
+          )}
+          {due && <span>Fällig: {due}</span>}
+        </div>
+      </header>
+
+      {context && (
+        <>
+          <LinkedItems
+            title="Blocker"
+            items={context.blockers?.filter((b) =>
+              ['open', 'in_progress'].includes(b.status)
+            )}
+            renderItem={(b) => (
+              <>
+                <StatusBadge kind="blocker" status={b.status} />
+                <strong>{b.title}</strong>
+              </>
+            )}
+          />
+          <LinkedItems
+            title="Nachweise"
+            items={context.evidence}
+            renderItem={(e) => (
+              <>
+                <StatusBadge kind="evidence" status={e.status} />
+                {e.title}
+              </>
+            )}
+          />
+          <LinkedItems
+            title="Reviews"
+            items={context.reviews}
+            renderItem={(r) => (
+              <>
+                <StatusBadge kind="review" status={r.status} />
+                {r.title}
+                {r.due_at && (
+                  <span className="muted"> · fällig {formatDue(r.due_at)}</span>
+                )}
+              </>
+            )}
+          />
+        </>
+      )}
+
+      {canManage && (
+        <footer className="action-hub-card-actions">
+          <select
+            className="inline-select"
+            value={action.status}
+            onChange={(e) => onQuickStatus(e.target.value)}
+            aria-label="Status ändern"
+          >
+            {ACTION_STATUSES.map((s) => (
+              <option key={s} value={s}>
+                {ACTION_STATUS_LABELS[s]}
+              </option>
+            ))}
+          </select>
+          {canManageBlocker && action.status !== 'done' && (
+            <button
+              type="button"
+              className="btn btn-secondary btn-sm"
+              onClick={onCreateBlocker}
+              disabled={formBusy}
+            >
+              Blocker melden
+            </button>
+          )}
+          <button
+            type="button"
+            className="btn btn-ghost btn-sm"
+            onClick={onEdit}
+          >
+            Bearbeiten
+          </button>
+        </footer>
+      )}
+    </article>
+  )
+}
diff --git a/frontend/src/components/BlockersSection.jsx b/frontend/src/components/BlockersSection.jsx
index e25d852..ec0c0c4 100644
--- a/frontend/src/components/BlockersSection.jsx
+++ b/frontend/src/components/BlockersSection.jsx
@@ -13,22 +13,28 @@ export function BlockersSection({
   onUpdateStatus,
   onDelete,
   busy,
+  heading = 'Blocker',
+  lead = null,
+  emptyMessage = 'Keine Blocker.',
 }) {
-  const [title, setTitle] = useState('')
+  const [formTitle, setFormTitle] = useState('')
   const [showForm, setShowForm] = useState(false)
 
   async function handleSubmit(e) {
     e.preventDefault()
-    if (!title.trim()) return
-    await onCreate({ title: title.trim() })
-    setTitle('')
+    if (!formTitle.trim()) return
+    await onCreate({ title: formTitle.trim() })
+    setFormTitle('')
     setShowForm(false)
   }
 
   return (
     <section className="card">
       <div className="section-header">
-        <h2>Blocker</h2>
+        <div>
+          <h2>{heading}</h2>
+          {lead && <p className="section-lead muted">{lead}</p>}
+        </div>
         {canManage && (
           <button
             type="button"
@@ -45,8 +51,8 @@ export function BlockersSection({
           <label>
             Titel
             <input
-              value={title}
-              onChange={(e) => setTitle(e.target.value)}
+              value={formTitle}
+              onChange={(e) => setFormTitle(e.target.value)}
               maxLength={255}
               required
             />
@@ -57,7 +63,7 @@ export function BlockersSection({
         </form>
       )}
 
-      {blockers.length === 0 && <EmptyState message="Keine Blocker." />}
+      {blockers.length === 0 && <EmptyState message={emptyMessage} />}
 
       <ul className="item-list">
         {blockers.map((blocker) => (
diff --git a/frontend/src/components/CollapsibleSection.jsx b/frontend/src/components/CollapsibleSection.jsx
new file mode 100644
index 0000000..7ca014a
--- /dev/null
+++ b/frontend/src/components/CollapsibleSection.jsx
@@ -0,0 +1,29 @@
+import { useState } from 'react'
+
+export function CollapsibleSection({
+  title,
+  summary,
+  defaultOpen = false,
+  children,
+  className = '',
+}) {
+  const [open, setOpen] = useState(defaultOpen)
+
+  return (
+    <section className={`collapsible-section card ${className}`.trim()}>
+      <button
+        type="button"
+        className="collapsible-section-trigger"
+        onClick={() => setOpen((v) => !v)}
+        aria-expanded={open}
+      >
+        <span className="collapsible-section-title">{title}</span>
+        {summary && <span className="collapsible-section-summary muted">{summary}</span>}
+        <span className="collapsible-section-chevron" aria-hidden="true">
+          {open ? '▾' : '▸'}
+        </span>
+      </button>
+      {open && <div className="collapsible-section-body">{children}</div>}
+    </section>
+  )
+}
diff --git a/frontend/src/components/InitiativeActionsHub.jsx b/frontend/src/components/InitiativeActionsHub.jsx
new file mode 100644
index 0000000..69f2363
--- /dev/null
+++ b/frontend/src/components/InitiativeActionsHub.jsx
@@ -0,0 +1,103 @@
+import { ActionHubCard } from './ActionHubCard.jsx'
+import { ActionForm } from './ActionForm.jsx'
+import { EmptyState } from './EmptyState.jsx'
+
+export function InitiativeActionsHub({
+  actions,
+  actionContextById,
+  hideDone,
+  onHideDoneChange,
+  showForm,
+  onToggleForm,
+  editingActionId,
+  onEditAction,
+  onCancelEdit,
+  onCreateAction,
+  onUpdateAction,
+  onQuickStatus,
+  onCreateBlockerForAction,
+  canManage,
+  canManageBlocker,
+  formBusy,
+  actors,
+  actorsLoading,
+  actorsError,
+  actorsUsedFallback,
+  onReloadActors,
+}) {
+  return (
+    <section className="card initiative-actions-hub">
+      <div className="section-header">
+        <div>
+          <h2>Maßnahmen — operative Arbeit</h2>
+          <p className="section-lead muted">
+            Blocker, Nachweise und Reviews hängen an der Maßnahme, nicht lose im Vorhaben.
+          </p>
+        </div>
+        <div className="section-actions">
+          <label className="checkbox-label inline-filter">
+            <input
+              type="checkbox"
+              checked={hideDone}
+              onChange={(e) => onHideDoneChange(e.target.checked)}
+            />
+            Erledigte ausblenden
+          </label>
+          {canManage && (
+            <button
+              type="button"
+              className="btn btn-primary btn-block-mobile"
+              onClick={onToggleForm}
+            >
+              {showForm ? 'Abbrechen' : 'Maßnahme anlegen'}
+            </button>
+          )}
+        </div>
+      </div>
+
+      {showForm && canManage && (
+        <div className="inline-form-block">
+          <ActionForm
+            actors={actors}
+            actorsLoading={actorsLoading}
+            actorsError={actorsError}
+            actorsUsedFallback={actorsUsedFallback}
+            onReloadActors={onReloadActors}
+            onSubmit={onCreateAction}
+            onCancel={onToggleForm}
+            busy={formBusy}
+            submitLabel="Maßnahme anlegen"
+          />
+        </div>
+      )}
+
+      {actions.length === 0 && (
+        <EmptyState message="Noch keine Maßnahmen — lege die erste operative Maßnahme an oder wandle Backlog um." />
+      )}
+
+      <div className="action-hub-grid">
+        {actions.map((action) => (
+          <ActionHubCard
+            key={action.id}
+            action={action}
+            context={actionContextById[action.id]}
+            editing={editingActionId === action.id}
+            onEdit={() => onEditAction(action.id)}
+            onCancelEdit={onCancelEdit}
+            onSubmitEdit={(payload) => onUpdateAction(action.id, payload)}
+            onQuickStatus={(status) => onQuickStatus(action, status)}
+            onCreateBlocker={() => onCreateBlockerForAction(action.id)}
+            canManage={canManage}
+            canManageBlocker={canManageBlocker}
+            formBusy={formBusy}
+            actors={actors}
+            actorsLoading={actorsLoading}
+            actorsError={actorsError}
+            actorsUsedFallback={actorsUsedFallback}
+            onReloadActors={onReloadActors}
+          />
+        ))}
+      </div>
+    </section>
+  )
+}
diff --git a/frontend/src/components/MilestonesSection.jsx b/frontend/src/components/MilestonesSection.jsx
index 918bfbe..26b8960 100644
--- a/frontend/src/components/MilestonesSection.jsx
+++ b/frontend/src/components/MilestonesSection.jsx
@@ -6,6 +6,17 @@ import {
 import { StatusBadge } from './StatusBadge.jsx'
 import { EmptyState } from './EmptyState.jsx'
 
+function formatDate(value) {
+  if (!value) return null
+  try {
+    return new Date(value.includes('T') ? value : `${value}T12:00:00`).toLocaleDateString(
+      'de-DE'
+    )
+  } catch {
+    return value
+  }
+}
+
 export function MilestonesSection({
   milestones,
   canManage,
@@ -13,22 +24,36 @@ export function MilestonesSection({
   onUpdateStatus,
   onDelete,
   busy,
+  compact = false,
 }) {
   const [title, setTitle] = useState('')
+  const [goalDescription, setGoalDescription] = useState('')
+  const [targetDate, setTargetDate] = useState('')
   const [showForm, setShowForm] = useState(false)
 
   async function handleSubmit(e) {
     e.preventDefault()
     if (!title.trim()) return
-    await onCreate({ title: title.trim() })
+    await onCreate({
+      title: title.trim(),
+      goal_description: goalDescription.trim(),
+      target_date: targetDate || undefined,
+    })
     setTitle('')
+    setGoalDescription('')
+    setTargetDate('')
     setShowForm(false)
   }
 
   return (
-    <section className="card">
+    <section className={`card${compact ? ' card--secondary' : ''}`}>
       <div className="section-header">
-        <h2>Meilensteine</h2>
+        <div>
+          <h2>Meilensteine</h2>
+          <p className="section-lead muted">
+            Überprüfbare Zielpunkte — kein Task. Ziel und Termin machen den Horizont steuerbar.
+          </p>
+        </div>
         {canManage && (
           <button
             type="button"
@@ -41,7 +66,7 @@ export function MilestonesSection({
       </div>
 
       {showForm && canManage && (
-        <form className="inline-form-block" onSubmit={handleSubmit}>
+        <form className="inline-form-block milestone-form" onSubmit={handleSubmit}>
           <label>
             Titel
             <input
@@ -49,6 +74,24 @@ export function MilestonesSection({
               onChange={(e) => setTitle(e.target.value)}
               maxLength={255}
               required
+              placeholder="z. B. MVP nutzbar im Alltag"
+            />
+          </label>
+          <label>
+            Ziel / Definition of Done
+            <textarea
+              value={goalDescription}
+              onChange={(e) => setGoalDescription(e.target.value)}
+              rows={3}
+              placeholder="Woran erkennst du, dass dieser Meilenstein erreicht ist?"
+            />
+          </label>
+          <label>
+            Zieltermin
+            <input
+              type="date"
+              value={targetDate}
+              onChange={(e) => setTargetDate(e.target.value)}
             />
           </label>
           <button type="submit" className="btn btn-primary" disabled={busy}>
@@ -57,18 +100,22 @@ export function MilestonesSection({
         </form>
       )}
 
-      {milestones.length === 0 && <EmptyState message="Keine Meilensteine." />}
+      {milestones.length === 0 && (
+        <EmptyState message="Noch keine Meilensteine — strukturiere das Vorhaben in überprüfbare Zielpunkte." />
+      )}
 
-      <ul className="item-list">
+      <ul className="item-list milestone-list">
         {milestones.map((milestone) => (
-          <li key={milestone.id} className="list-item card-list-item">
+          <li key={milestone.id} className="list-item card-list-item milestone-list-item">
             <div className="list-item-main">
               <strong>{milestone.title}</strong>
               {milestone.goal_description && (
                 <p className="list-item-desc">{milestone.goal_description}</p>
               )}
               {milestone.target_date && (
-                <p className="muted list-item-sub">Ziel: {milestone.target_date}</p>
+                <p className="muted list-item-sub">
+                  Zieltermin: {formatDate(milestone.target_date)}
+                </p>
               )}
             </div>
             <div className="list-item-meta action-controls">
diff --git a/frontend/src/components/SteeringSnapshotPanel.jsx b/frontend/src/components/SteeringSnapshotPanel.jsx
index a46c46f..3f6b9ca 100644
--- a/frontend/src/components/SteeringSnapshotPanel.jsx
+++ b/frontend/src/components/SteeringSnapshotPanel.jsx
@@ -1,4 +1,3 @@
-import { Link } from 'react-router-dom'
 import {
   LIFECYCLE_LABELS,
   PHASE_LABELS,
@@ -69,35 +68,63 @@ export function SteeringSnapshotPanel({
     ? null
     : PHASE_DESCRIPTIONS[operating_phase] || ''
 
-  return (
-    <section className="card steering-snapshot">
-      <div className="section-header">
-        <h2>Steuerungszustand</h2>
-        <span className="badge status-badge status-active">{displayLabel}</span>
-      </div>
+  const statPills = [
+    { label: 'Offen', value: counts.actions_open, warn: false },
+    { label: 'Blockiert', value: counts.actions_blocked, warn: counts.actions_blocked > 0 },
+    { label: 'Review', value: counts.actions_review_required, warn: counts.actions_review_required > 0 },
+    { label: 'Blocker', value: counts.blockers_open, warn: counts.blockers_open > 0 },
+  ]
 
-      {(method_label || canManageMethod) && (
-        <p className="steering-method-row">
-          <span className="muted">Methode: </span>
-          {canManageMethod && methods.length > 0 ? (
-            <select
-              className="inline-select steering-method-select"
-              value={method_key || 'generic_operating'}
-              disabled={methodBusy}
-              onChange={(e) => onMethodChange?.(e.target.value)}
-              aria-label="Steuerungsmethode"
+  return (
+    <section className="card steering-snapshot steering-snapshot--hero">
+      <header className="steering-hero-header">
+        <div>
+          <p className="steering-hero-kicker">Leitfrage</p>
+          <h2 className="steering-hero-title">
+            Wo stehe ich — und was ist als Nächstes dran?
+          </h2>
+        </div>
+        <span className="badge status-badge status-active steering-lifecycle-badge">
+          {displayLabel}
+        </span>
+      </header>
+
+      <div className="steering-hero-toolbar">
+        {(method_label || canManageMethod) && (
+          <p className="steering-method-row">
+            <span className="muted">Methode: </span>
+            {canManageMethod && methods.length > 0 ? (
+              <select
+                className="inline-select steering-method-select"
+                value={method_key || 'generic_operating'}
+                disabled={methodBusy}
+                onChange={(e) => onMethodChange?.(e.target.value)}
+                aria-label="Steuerungsmethode"
+              >
+                {methods.map((m) => (
+                  <option key={m.key} value={m.key}>
+                    {m.label}
+                  </option>
+                ))}
+              </select>
+            ) : (
+              <strong>{method_label || method_key}</strong>
+            )}
+          </p>
+        )}
+
+        <ul className="steering-stat-pills" aria-label="Kurzüberblick">
+          {statPills.map((pill) => (
+            <li
+              key={pill.label}
+              className={`steering-stat-pill${pill.warn ? ' steering-stat-pill--warn' : ''}`}
             >
-              {methods.map((m) => (
-                <option key={m.key} value={m.key}>
-                  {m.label}
-                </option>
-              ))}
-            </select>
-          ) : (
-            <strong>{method_label || method_key}</strong>
-          )}
-        </p>
-      )}
+              <span className="steering-stat-pill-value">{pill.value}</span>
+              <span className="steering-stat-pill-label">{pill.label}</span>
+            </li>
+          ))}
+        </ul>
+      </div>
 
       {phaseDesc && <p className="steering-phase-desc">{phaseDesc}</p>}
 
@@ -107,76 +134,55 @@ export function SteeringSnapshotPanel({
         </p>
       )}
 
-      {next_actions.length > 0 && (
-        <div className="steering-next-actions">
-          <h3>Nächste Schritte für dieses Vorhaben</h3>
-          <ol className="item-list compact-list">
-            {next_actions.map((item, i) => (
-              <li key={`${item.kind}-${i}`} className="list-item card-list-item compact">
-                <div className="list-item-main">
-                  <span className="next-action-rank">{i + 1}</span>
-                  <strong>{item.title}</strong>
-                  <span className="muted list-item-sub">
-                    {NEXT_ACTION_KIND_LABELS[item.kind] || item.kind}
-                    {item.recommended_action ? ` — ${item.recommended_action}` : ''}
-                  </span>
-                </div>
-              </li>
-            ))}
-          </ol>
-        </div>
-      )}
-
-      {upcoming_milestones.length > 0 && (
-        <div className="steering-milestones">
-          <h3>Meilenstein-Horizont</h3>
-          <ul className="item-list compact-list">
-            {upcoming_milestones.map((ms) => (
-              <li key={ms.id} className="list-item card-list-item compact">
-                <div className="list-item-main">
-                  <strong>{ms.title}</strong>
-                  <span className="muted list-item-sub">
-                    {MILESTONE_STATUS_LABELS[ms.status] || ms.status}
-                    {ms.target_date ? ` · Ziel: ${formatDate(ms.target_date)}` : ''}
-                  </span>
-                </div>
-              </li>
-            ))}
-          </ul>
-        </div>
-      )}
-
-      <dl className="snapshot-counts">
-        <div>
-          <dt>Offene Maßnahmen</dt>
-          <dd>{counts.actions_open}</dd>
-        </div>
-        <div>
-          <dt>Blockiert</dt>
-          <dd>{counts.actions_blocked}</dd>
-        </div>
-        <div>
-          <dt>Review nötig</dt>
-          <dd>{counts.actions_review_required}</dd>
-        </div>
-        <div>
-          <dt>Offene Blocker</dt>
-          <dd>{counts.blockers_open}</dd>
-        </div>
-        {(counts.unlinked_blockers > 0 || counts.unlinked_evidence > 0) && (
-          <div className="snapshot-warn">
-            <dt>Unverknüpft</dt>
-            <dd>
-              {counts.unlinked_blockers} Blocker, {counts.unlinked_evidence} Evidence
-            </dd>
+      <div className="steering-hero-columns">
+        {next_actions.length > 0 && (
+          <div className="steering-next-actions">
+            <h3>Nächste Schritte</h3>
+            <ol className="item-list compact-list">
+              {next_actions.map((item, i) => (
+                <li key={`${item.kind}-${i}`} className="list-item card-list-item compact">
+                  <div className="list-item-main">
+                    <span className="next-action-rank">{i + 1}</span>
+                    <strong>{item.title}</strong>
+                    <span className="muted list-item-sub">
+                      {NEXT_ACTION_KIND_LABELS[item.kind] || item.kind}
+                      {item.recommended_action ? ` — ${item.recommended_action}` : ''}
+                    </span>
+                  </div>
+                </li>
+              ))}
+            </ol>
           </div>
         )}
-      </dl>
 
-      <p className="muted snapshot-hint">
-        Steuerungszustand über Standard Lifecycle
-        {lifecycle_state ? ` (${lifecycle_state})` : ''}.
-      </p>
+        {upcoming_milestones.length > 0 && (
+          <div className="steering-milestones">
+            <h3>Meilenstein-Horizont</h3>
+            <ul className="item-list compact-list">
+              {upcoming_milestones.map((ms) => (
+                <li key={ms.id} className="list-item card-list-item compact">
+                  <div className="list-item-main">
+                    <strong>{ms.title}</strong>
+                    <span className="muted list-item-sub">
+                      {MILESTONE_STATUS_LABELS[ms.status] || ms.status}
+                      {ms.target_date ? ` · Ziel: ${formatDate(ms.target_date)}` : ''}
+                    </span>
+                  </div>
+                </li>
+              ))}
+            </ul>
+          </div>
+        )}
+      </div>
+
+      {(counts.unlinked_blockers > 0 || counts.unlinked_evidence > 0) && (
+        <p className="steering-unlinked-hint muted">
+          {counts.unlinked_blockers > 0 && `${counts.unlinked_blockers} Blocker ohne Maßnahme`}
+          {counts.unlinked_blockers > 0 && counts.unlinked_evidence > 0 && ' · '}
+          {counts.unlinked_evidence > 0 && `${counts.unlinked_evidence} Nachweise ohne Maßnahme`}
+          {' — unter „Erweitert“ verknüpfen oder aufräumen.'}
+        </p>
+      )}
     </section>
   )
 }
diff --git a/frontend/src/pages/InitiativeDetailPage.jsx b/frontend/src/pages/InitiativeDetailPage.jsx
index 6d66027..7d7d833 100644
--- a/frontend/src/pages/InitiativeDetailPage.jsx
+++ b/frontend/src/pages/InitiativeDetailPage.jsx
@@ -50,10 +50,8 @@ import {
   updateRecurring,
   deleteRecurring,
 } from '../api/recurring.js'
-import { ACTION_STATUSES, ACTION_STATUS_LABELS } from '../constants/status.js'
 import { StatusBadge } from '../components/StatusBadge.jsx'
 import { PriorityBadge } from '../components/PriorityBadge.jsx'
-import { ActionForm } from '../components/ActionForm.jsx'
 import { BlockersSection } from '../components/BlockersSection.jsx'
 import { BacklogSection } from '../components/BacklogSection.jsx'
 import { MilestonesSection } from '../components/MilestonesSection.jsx'
@@ -62,8 +60,9 @@ import { DecisionsSection } from '../components/DecisionsSection.jsx'
 import { ReviewsSection } from '../components/ReviewsSection.jsx'
 import { RecurringSection } from '../components/RecurringSection.jsx'
 import { SteeringSnapshotPanel } from '../components/SteeringSnapshotPanel.jsx'
+import { InitiativeActionsHub } from '../components/InitiativeActionsHub.jsx'
+import { CollapsibleSection } from '../components/CollapsibleSection.jsx'
 import { listSteeringMethods, updateInitiativeSteeringMethod } from '../api/steering.js'
-import { EmptyState } from '../components/EmptyState.jsx'
 import { ErrorState } from '../components/ErrorState.jsx'
 import { LoadingState } from '../components/LoadingState.jsx'
 import { useCapabilities } from '../hooks/useCapabilities.js'
@@ -165,6 +164,20 @@ export function InitiativeDetailPage() {
     (steeringSnapshot?.actions || []).map((a) => [a.id, a])
   )
 
+  const unlinkedBlockers = blockers.filter((b) => !b.action_id)
+
+  const advancedSummary = (() => {
+    const c = steeringSnapshot?.counts
+    const parts = []
+    if (backlogItems.length) parts.push(`${backlogItems.length} Backlog`)
+    if (decisions.length) parts.push(`${decisions.length} Entscheidungen`)
+    if (recurringItems.length) parts.push(`${recurringItems.length} Wiederkehrend`)
+    if (unlinkedBlockers.length) parts.push(`${unlinkedBlockers.length} lose Blocker`)
+    if (c?.unlinked_evidence) parts.push(`${c.unlinked_evidence} lose Nachweise`)
+    if (reviews.length) parts.push(`${reviews.length} Reviews`)
+    return parts.length ? parts.join(' · ') : 'Backlog, Entscheidungen, Nachweise …'
+  })()
+
   async function handleMethodChange(methodKey) {
     setMethodBusy(true)
     try {
@@ -523,140 +536,32 @@ export function InitiativeDetailPage() {
         />
       )}
 
-      <section className="card">
-        <div className="section-header">
-          <h2>Maßnahmen</h2>
-          <div className="section-actions">
-            <label className="checkbox-label inline-filter">
-              <input
-                type="checkbox"
-                checked={hideDone}
-                onChange={(e) => setHideDone(e.target.checked)}
-              />
-              Erledigte ausblenden
-            </label>
-            {capabilities.has('kairo.action.manage') && (
-              <button
-                type="button"
-                className="btn btn-primary btn-block-mobile"
-                onClick={() => { setShowActionForm((v) => !v); setEditingAction(null) }}
-              >
-                {showActionForm ? 'Abbrechen' : 'Maßnahme anlegen'}
-              </button>
-            )}
-          </div>
-        </div>
-
-        {showActionForm && (
-          <div className="inline-form-block">
-            <ActionForm
-              actors={actors}
-              actorsLoading={actorsLoading}
-              actorsError={actorsError}
-              actorsUsedFallback={actorsUsedFallback}
-              onReloadActors={reloadActors}
-              onSubmit={handleCreateAction}
-              onCancel={() => setShowActionForm(false)}
-              busy={formBusy}
-              submitLabel="Maßnahme anlegen"
-            />
-          </div>
-        )}
-
-        {visibleActions.length === 0 && (
-          <EmptyState message="Noch keine Maßnahmen in diesem Vorhaben." />
-        )}
-
-        <ul className="item-list actions-detail-list">
-          {visibleActions.map((action) => {
-            const ctx = actionContextById[action.id]
-            return (
-            <li key={action.id} className="list-item card-list-item">
-              {editingAction === action.id ? (
-                <ActionForm
-                  initial={action}
-                  actors={actors}
-                  actorsLoading={actorsLoading}
-                  actorsError={actorsError}
-                  actorsUsedFallback={actorsUsedFallback}
-                  onReloadActors={reloadActors}
-                  onSubmit={(payload) => handleUpdateAction(action.id, payload)}
-                  onCancel={() => setEditingAction(null)}
-                  busy={formBusy}
-                  submitLabel="Speichern"
-                />
-              ) : (
-                <>
-                  <div className="list-item-main">
-                    <strong>{action.title}</strong>
-                    {action.description && (
-                      <p className="list-item-desc">{action.description}</p>
-                    )}
-                    {action.assigned_actor_ids?.length > 0 && (
-                      <p className="muted list-item-sub">
-                        Zugewiesen: {action.assigned_actor_ids.length} Actor(s)
-                      </p>
-                    )}
-                    {action.due_at && (
-                      <p className="muted list-item-sub">
-                        Fällig: {new Date(action.due_at).toLocaleString('de-DE')}
-                      </p>
-                    )}
-                    {ctx && (ctx.open_blocker_count > 0 || ctx.evidence?.length > 0 || ctx.reviews?.length > 0) && (
-                      <p className="muted list-item-sub action-links">
-                        {ctx.open_blocker_count > 0 && `${ctx.open_blocker_count} Blocker · `}
-                        {ctx.evidence?.length > 0 && `${ctx.evidence.length} Evidence · `}
-                        {ctx.reviews?.length > 0 && `${ctx.reviews.length} Review(s)`}
-                      </p>
-                    )}
-                  </div>
-                  <div className="list-item-meta action-controls">
-                    <StatusBadge status={action.status} />
-                    <PriorityBadge priority={action.priority} />
-                    {capabilities.has('kairo.action.manage') && (
-                      <>
-                        <select
-                          className="inline-select"
-                          value={action.status}
-                          onChange={(e) => handleQuickStatus(action, e.target.value)}
-                          aria-label="Status ändern"
-                        >
-                          {ACTION_STATUSES.map((s) => (
-                            <option key={s} value={s}>
-                              {ACTION_STATUS_LABELS[s]}
-                            </option>
-                          ))}
-                        </select>
-                        {capabilities.has('kairo.blocker.manage') && action.status !== 'done' && (
-                          <button
-                            type="button"
-                            className="btn btn-secondary"
-                            onClick={() => handleCreateBlockerForAction(action.id)}
-                            disabled={formBusy}
-                          >
-                            Blocker
-                          </button>
-                        )}
-                        <button
-                          type="button"
-                          className="btn btn-secondary"
-                          onClick={() => {
-                            setEditingAction(action.id)
-                            setShowActionForm(false)
-                          }}
-                        >
-                          Bearbeiten
-                        </button>
-                      </>
-                    )}
-                  </div>
-                </>
-              )}
-            </li>
-            )
-          })}
-        </ul>
-      </section>
+      <InitiativeActionsHub
+        actions={visibleActions}
+        actionContextById={actionContextById}
+        hideDone={hideDone}
+        onHideDoneChange={setHideDone}
+        showForm={showActionForm}
+        onToggleForm={() => {
+          setShowActionForm((v) => !v)
+          setEditingAction(null)
+        }}
+        editingActionId={editingAction}
+        onEditAction={setEditingAction}
+        onCancelEdit={() => setEditingAction(null)}
+        onCreateAction={handleCreateAction}
+        onUpdateAction={handleUpdateAction}
+        onQuickStatus={handleQuickStatus}
+        onCreateBlockerForAction={handleCreateBlockerForAction}
+        canManage={capabilities.has('kairo.action.manage')}
+        canManageBlocker={capabilities.has('kairo.blocker.manage')}
+        formBusy={formBusy}
+        actors={actors}
+        actorsLoading={actorsLoading}
+        actorsError={actorsError}
+        actorsUsedFallback={actorsUsedFallback}
+        onReloadActors={reloadActors}
+      />
 
       {capabilities.has('kairo.initiative.read') && (
         <MilestonesSection
@@ -670,70 +575,62 @@ export function InitiativeDetailPage() {
       )}
 
       {capabilities.has('kairo.initiative.read') && (
-        <BacklogSection
-          items={backlogItems}
-          canManage={capabilities.has('kairo.backlog.manage')}
-          onCreate={handleCreateBacklog}
-          onUpdateStatus={handleBacklogStatus}
-          onConvert={handleConvertBacklog}
-          onDelete={handleDeleteBacklog}
-          busy={formBusy}
-        />
-      )}
-
-      {capabilities.has('kairo.initiative.read') && (
-        <BlockersSection
-          blockers={blockers}
-          canManage={capabilities.has('kairo.blocker.manage')}
-          onCreate={handleCreateBlocker}
-          onUpdateStatus={handleBlockerStatus}
-          onDelete={handleDeleteBlocker}
-          busy={formBusy}
-        />
-      )}
-
-      {capabilities.has('kairo.initiative.read') && (
-        <EvidenceSection
-          items={evidenceItems}
-          canManage={capabilities.has('kairo.evidence.manage')}
-          onCreate={handleCreateEvidence}
-          onUpdateStatus={handleEvidenceStatus}
-          onDelete={handleDeleteEvidence}
-          busy={formBusy}
-        />
-      )}
-
-      {capabilities.has('kairo.initiative.read') && (
-        <DecisionsSection
-          items={decisions}
-          canManage={capabilities.has('kairo.decision.manage')}
-          onCreate={handleCreateDecision}
-          onUpdateStatus={handleDecisionStatus}
-          onDelete={handleDeleteDecision}
-          busy={formBusy}
-        />
-      )}
-
-      {capabilities.has('kairo.initiative.read') && (
-        <ReviewsSection
-          items={reviews}
-          canManage={capabilities.has('kairo.review.manage')}
-          onCreate={handleCreateReview}
-          onUpdateStatus={handleReviewStatus}
-          onDelete={handleDeleteReview}
-          busy={formBusy}
-        />
-      )}
-
-      {capabilities.has('kairo.initiative.read') && (
-        <RecurringSection
-          items={recurringItems}
-          canManage={capabilities.has('kairo.recurring.manage')}
-          onCreate={handleCreateRecurring}
-          onUpdateStatus={handleRecurringStatus}
-          onDelete={handleDeleteRecurring}
-          busy={formBusy}
-        />
+        <CollapsibleSection title="Erweitert" summary={advancedSummary}>
+          <div className="initiative-advanced-stack">
+            <BacklogSection
+              items={backlogItems}
+              canManage={capabilities.has('kairo.backlog.manage')}
+              onCreate={handleCreateBacklog}
+              onUpdateStatus={handleBacklogStatus}
+              onConvert={handleConvertBacklog}
+              onDelete={handleDeleteBacklog}
+              busy={formBusy}
+            />
+            <DecisionsSection
+              items={decisions}
+              canManage={capabilities.has('kairo.decision.manage')}
+              onCreate={handleCreateDecision}
+              onUpdateStatus={handleDecisionStatus}
+              onDelete={handleDeleteDecision}
+              busy={formBusy}
+            />
+            <RecurringSection
+              items={recurringItems}
+              canManage={capabilities.has('kairo.recurring.manage')}
+              onCreate={handleCreateRecurring}
+              onUpdateStatus={handleRecurringStatus}
+              onDelete={handleDeleteRecurring}
+              busy={formBusy}
+            />
+            <BlockersSection
+              blockers={unlinkedBlockers}
+              heading="Vorhaben-Blocker"
+              lead="Ohne Maßnahmenbezug — verknüpfte Blocker erscheinen am Maßnahmen-Hub."
+              emptyMessage="Keine vorhabenweiten Blocker."
+              canManage={capabilities.has('kairo.blocker.manage')}
+              onCreate={handleCreateBlocker}
+              onUpdateStatus={handleBlockerStatus}
+              onDelete={handleDeleteBlocker}
+              busy={formBusy}
+            />
+            <EvidenceSection
+              items={evidenceItems}
+              canManage={capabilities.has('kairo.evidence.manage')}
+              onCreate={handleCreateEvidence}
+              onUpdateStatus={handleEvidenceStatus}
+              onDelete={handleDeleteEvidence}
+              busy={formBusy}
+            />
+            <ReviewsSection
+              items={reviews}
+              canManage={capabilities.has('kairo.review.manage')}
+              onCreate={handleCreateReview}
+              onUpdateStatus={handleReviewStatus}
+              onDelete={handleDeleteReview}
+              busy={formBusy}
+            />
+          </div>
+        </CollapsibleSection>
       )}
     </div>
   )
diff --git a/frontend/src/styles/components.css b/frontend/src/styles/components.css
index 53aa74d..abfa0b2 100644
--- a/frontend/src/styles/components.css
+++ b/frontend/src/styles/components.css
@@ -690,3 +690,280 @@
 .action-links {
   font-size: 0.85rem;
 }
+
+/* AP1.1b — Initiative detail steering surface */
+
+.section-lead {
+  margin: 0.25rem 0 0;
+  font-size: 0.875rem;
+  max-width: 42rem;
+}
+
+.steering-snapshot--hero {
+  border-color: var(--jk-accent-muted, #dbeafe);
+  background: linear-gradient(
+    180deg,
+    var(--jk-surface-raised, #f8fafc) 0%,
+    var(--jk-surface, #fff) 100%
+  );
+}
+
+.steering-hero-header {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 0.75rem 1rem;
+  margin-bottom: 0.75rem;
+}
+
+.steering-hero-kicker {
+  margin: 0;
+  font-size: 0.75rem;
+  font-weight: 600;
+  letter-spacing: 0.04em;
+  text-transform: uppercase;
+  color: var(--jk-accent, #2563eb);
+}
+
+.steering-hero-title {
+  margin: 0.15rem 0 0;
+  font-size: 1.15rem;
+  line-height: 1.35;
+}
+
+.steering-lifecycle-badge {
+  flex-shrink: 0;
+}
+
+.steering-hero-toolbar {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 0.75rem 1.25rem;
+  margin-bottom: 0.75rem;
+}
+
+.steering-stat-pills {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.5rem;
+  list-style: none;
+  margin: 0;
+  padding: 0;
+}
+
+.steering-stat-pill {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  min-width: 3.25rem;
+  padding: 0.35rem 0.6rem;
+  border-radius: 0.5rem;
+  background: var(--jk-surface, #fff);
+  border: 1px solid var(--jk-border, #e5e7eb);
+}
+
+.steering-stat-pill--warn {
+  border-color: var(--jk-warning-border, #fcd34d);
+  background: var(--jk-warning-bg, #fffbeb);
+}
+
+.steering-stat-pill-value {
+  font-weight: 700;
+  font-size: 1rem;
+  line-height: 1.2;
+}
+
+.steering-stat-pill-label {
+  font-size: 0.7rem;
+  color: var(--jk-text-muted, #6b7280);
+}
+
+.steering-hero-columns {
+  display: grid;
+  gap: 1rem;
+}
+
+@media (min-width: 768px) {
+  .steering-hero-columns {
+    grid-template-columns: 1fr 1fr;
+  }
+}
+
+.steering-unlinked-hint {
+  margin: 0.75rem 0 0;
+  font-size: 0.85rem;
+}
+
+.initiative-actions-hub {
+  border-width: 2px;
+}
+
+.action-hub-grid {
+  display: grid;
+  gap: 0.75rem;
+}
+
+.action-hub-card {
+  border: 1px solid var(--jk-border, #e5e7eb);
+  border-radius: 0.65rem;
+  padding: 0.85rem 1rem;
+  background: var(--jk-surface, #fff);
+}
+
+.action-hub-card--blocked {
+  border-color: var(--jk-warning-border, #fbbf24);
+  background: var(--jk-warning-bg, #fffbeb);
+}
+
+.action-hub-card--editing {
+  padding: 0.5rem;
+}
+
+.action-hub-card-header {
+  margin-bottom: 0.5rem;
+}
+
+.action-hub-card-title-row {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 0.5rem;
+}
+
+.action-hub-card-title {
+  margin: 0;
+  font-size: 1rem;
+  font-weight: 600;
+}
+
+.action-hub-card-badges {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.35rem;
+}
+
+.action-hub-card-desc {
+  margin: 0.35rem 0 0;
+  font-size: 0.9rem;
+  color: var(--jk-text, #111);
+}
+
+.action-hub-card-meta {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.75rem;
+  margin-top: 0.35rem;
+  font-size: 0.8rem;
+}
+
+.action-hub-linked {
+  margin-top: 0.65rem;
+  padding-top: 0.65rem;
+  border-top: 1px dashed var(--jk-border, #e5e7eb);
+}
+
+.action-hub-linked-title {
+  margin: 0 0 0.35rem;
+  font-size: 0.75rem;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.03em;
+  color: var(--jk-text-muted, #6b7280);
+}
+
+.action-hub-linked-list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: grid;
+  gap: 0.35rem;
+}
+
+.action-hub-linked-list li {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 0.35rem;
+  font-size: 0.875rem;
+}
+
+.action-hub-card-actions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.5rem;
+  margin-top: 0.75rem;
+  padding-top: 0.65rem;
+  border-top: 1px solid var(--jk-border, #e5e7eb);
+}
+
+.btn-sm {
+  padding: 0.25rem 0.55rem;
+  font-size: 0.8rem;
+}
+
+.card--secondary {
+  background: var(--jk-surface-raised, #f9fafb);
+}
+
+.milestone-form textarea {
+  min-height: 4.5rem;
+  resize: vertical;
+}
+
+.collapsible-section {
+  padding: 0;
+  overflow: hidden;
+}
+
+.collapsible-section-trigger {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 0.5rem 1rem;
+  width: 100%;
+  padding: 1rem 1.15rem;
+  border: none;
+  background: transparent;
+  text-align: left;
+  cursor: pointer;
+  font: inherit;
+  color: inherit;
+}
+
+.collapsible-section-trigger:hover {
+  background: var(--jk-surface-raised, #f9fafb);
+}
+
+.collapsible-section-title {
+  font-size: 1.05rem;
+  font-weight: 600;
+}
+
+.collapsible-section-summary {
+  flex: 1;
+  font-size: 0.85rem;
+  min-width: 8rem;
+}
+
+.collapsible-section-chevron {
+  margin-left: auto;
+  color: var(--jk-text-muted, #6b7280);
+}
+
+.collapsible-section-body {
+  padding: 0 1rem 1rem;
+}
+
+.initiative-advanced-stack {
+  display: grid;
+  gap: 0.75rem;
+}
+
+.initiative-advanced-stack .card {
+  box-shadow: none;
+  border-style: dashed;
+}
+