diff --git a/README.md b/README.md
index 468b3e9..d0e5654 100644
--- a/README.md
+++ b/README.md
@@ -232,7 +232,7 @@ Das Plugin unter `netbox_plugin/` ist auf NetBox 4.6.5–4.6.8 begrenzt. Zuerst
 ```text
 cd netbox_plugin
 python -m build
-/opt/netbox/venv/bin/pip install dist/netbox_plugin_store-0.1.1-py3-none-any.whl
+/opt/netbox/venv/bin/pip install dist/netbox_plugin_store-0.1.2-py3-none-any.whl
 ```
 
 Das Paket muss außerdem in `/opt/netbox/local_requirements.txt` festgehalten werden. In `configuration.py` wird es zunächst sicher im Dry-run-Modus eingerichtet:
diff --git a/netbox_plugin/README.md b/netbox_plugin/README.md
index a5d76e5..970cab6 100644
--- a/netbox_plugin/README.md
+++ b/netbox_plugin/README.md
@@ -22,7 +22,7 @@ The safe default is intentionally non-mutating. Installing the UI alone never gr
 Install the wheel into NetBox's virtual environment and persist it in `/opt/netbox/local_requirements.txt`:
 
 ```text
-netbox-plugin-store==0.1.1
+netbox-plugin-store==0.1.2
 ```
 
 Add the plugin to `configuration.py`:
diff --git a/netbox_plugin/netbox_plugin_store/client.py b/netbox_plugin/netbox_plugin_store/client.py
index f06d9ed..989f330 100644
--- a/netbox_plugin/netbox_plugin_store/client.py
+++ b/netbox_plugin/netbox_plugin_store/client.py
@@ -166,7 +166,7 @@ class CatalogPlugin:
         )
 
     def select_release(self, netbox_version: str, requested_version: str = "") -> Release:
-        compatible = [release for release in self.releases if release.supports(netbox_version, self)]
+        compatible = list(self.installable_releases(netbox_version))
         if requested_version:
             compatible = [release for release in compatible if release.version == requested_version]
         elif self.latest_version:
@@ -177,6 +177,26 @@ class CatalogPlugin:
             raise StoreClientError("No compatible release is available for this NetBox version.")
         return max(compatible, key=lambda release: Version(release.version))
 
+    def installable_releases(
+        self,
+        netbox_version: str,
+        *,
+        require_approval_marker: bool = False,
+    ) -> tuple[Release, ...]:
+        return tuple(
+            release
+            for release in self.releases
+            if (
+                release.supports(netbox_version, self)
+                and release.approved
+                and release.immutable
+                and bool(release.download_url)
+                and bool(release.sha256)
+                and release.artifact_kind in {"wheel", "source_archive"}
+                and (not require_approval_marker or bool(release.approved_payload_sha256))
+            )
+        )
+
 
 class StoreClient:
     API_LIMIT = 5 * 1024 * 1024
diff --git a/netbox_plugin/netbox_plugin_store/forms.py b/netbox_plugin/netbox_plugin_store/forms.py
index 88494d7..8893967 100644
--- a/netbox_plugin/netbox_plugin_store/forms.py
+++ b/netbox_plugin/netbox_plugin_store/forms.py
@@ -34,21 +34,20 @@ class LifecycleConfirmForm(forms.Form):
         self.runtime = runtime
         self.fields["confirmation"].widget.attrs.update({"autocomplete": "off", "placeholder": plugin.slug})
         self.fields["dry_run"].initial = runtime.default_dry_run
+        self.has_installable_release = True
         if action in {"install", "update"}:
             choices = [
                 (release.version, release.version)
-                for release in plugin.releases
-                if (
-                    release.supports(runtime.netbox_version, plugin)
-                    and release.approved
-                    and release.immutable
-                    and bool(release.sha256)
-                    and (runtime.execution_mode != "agent" or bool(release.approved_payload_sha256))
+                for release in plugin.installable_releases(
+                    runtime.netbox_version,
+                    require_approval_marker=runtime.execution_mode == "agent",
                 )
             ]
             choices.sort(reverse=True)
             self.fields["version"].choices = choices
-            self.fields["version"].required = True
+            self.has_installable_release = bool(choices)
+            self.fields["version"].required = self.has_installable_release
+            self.fields["version"].disabled = not self.has_installable_release
             self.fields["version"].initial = plugin.latest_version
         else:
             self.fields.pop("version")
@@ -64,6 +63,11 @@ class LifecycleConfirmForm(forms.Form):
 
     def clean(self):
         cleaned = super().clean()
+        if self.action in {"install", "update"} and not self.has_installable_release:
+            raise forms.ValidationError(
+                "Keine freigegebene, kompatible Plugin-Version ist verfügbar. "
+                "Das Source-Artefakt muss zunächst im Store synchronisiert und freigegeben werden."
+            )
         if self.runtime.execution_mode == "dry_run" and not cleaned.get("dry_run", False):
             self.add_error("dry_run", "Reale Aktionen sind in execution_mode=dry_run deaktiviert.")
         return cleaned
diff --git a/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/catalog.html b/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/catalog.html
index 14fe7da..cae1582 100644
--- a/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/catalog.html
+++ b/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/catalog.html
@@ -9,7 +9,7 @@
     <p class="text-secondary mb-0">Freigegebene Plugins für diese NetBox-Instanz.</p>
   </div>
   {% if runtime %}
-    <span class="badge {% if runtime.execution_mode == 'dry_run' %}bg-yellow text-dark{% else %}bg-green{% endif %}">
+    <span class="badge {% if runtime.execution_mode == 'dry_run' %}text-bg-warning{% else %}text-bg-success{% endif %}">
       Modus: {{ runtime.execution_mode }}
     </span>
   {% endif %}
@@ -29,14 +29,14 @@
           <div class="d-flex justify-content-between">
             <h3 class="card-title">{{ card.plugin.name }}</h3>
             {% if card.plugin.approved %}
-              <span class="badge bg-green">Freigegeben</span>
+              <span class="badge text-bg-success">Freigegeben</span>
             {% else %}
-              <span class="badge bg-red">Nicht freigegeben</span>
+              <span class="badge text-bg-danger">Nicht freigegeben</span>
             {% endif %}
           </div>
           <p class="text-secondary">{{ card.plugin.summary|default:"Keine Zusammenfassung vorhanden." }}</p>
           <dl class="row mb-0">
-            <dt class="col-5">Verfügbar</dt><dd class="col-7">{{ card.plugin.latest_version|default:"–" }}</dd>
+            <dt class="col-5">Verfügbar</dt><dd class="col-7">{{ card.plugin.latest_version|default:"Kein Artefakt freigegeben" }}</dd>
             <dt class="col-5">Installiert</dt><dd class="col-7">{{ card.installed_version|default:"–" }}</dd>
             <dt class="col-5">Status</dt>
             <dd class="col-7">
diff --git a/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/confirm.html b/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/confirm.html
index 8edcb2b..df04f5d 100644
--- a/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/confirm.html
+++ b/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/confirm.html
@@ -17,6 +17,11 @@
         {% if runtime.execution_mode == 'dry_run' %}
           <div class="alert alert-info">Diese Instanz erlaubt ausschließlich Dry-Runs.</div>
         {% endif %}
+        {% if not form.has_installable_release %}
+          <div class="alert alert-warning">
+            Keine freigegebene, kompatible Version verfügbar. Synchronisiere das Repository im Store-Adminbereich und gib danach das erzeugte Source-Artefakt unter „Release-Artefakte“ frei.
+          </div>
+        {% endif %}
         <form method="post" action="{% url 'plugins:netbox_plugin_store:lifecycle-action' slug=plugin.slug action=action %}">
           {% csrf_token %}
           {{ form.non_field_errors }}
@@ -30,7 +35,7 @@
           {% endfor %}
           <div class="d-flex justify-content-between">
             <a class="btn btn-outline-secondary" href="{% url 'plugins:netbox_plugin_store:plugin-detail' slug=plugin.slug %}">Abbrechen</a>
-            <button class="btn btn-danger" type="submit">Bestätigen</button>
+            <button class="btn btn-danger" type="submit" {% if not form.has_installable_release %}disabled{% endif %}>Bestätigen</button>
           </div>
         </form>
       </div>
diff --git a/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/detail.html b/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/detail.html
index 29bf593..42b65bc 100644
--- a/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/detail.html
+++ b/netbox_plugin/netbox_plugin_store/templates/netbox_plugin_store/detail.html
@@ -22,6 +22,12 @@
 {% if local_status and local_status.restart_required %}
   <div class="alert alert-warning">Ein Neustart von NetBox und den Workern ist erforderlich.</div>
 {% endif %}
+{% if plugin.approved and not has_installable_release %}
+  <div class="alert alert-warning">
+    Für dieses Plugin ist noch kein freigegebenes, mit NetBox {{ runtime.netbox_version }} kompatibles Artefakt verfügbar.
+    Repositorys ohne eigenen Release werden beim Store-Sync als commitgebundenes Source-Archiv eingelesen; dieses muss anschließend im Store-Adminbereich unter „Release-Artefakte“ freigegeben werden.
+  </div>
+{% endif %}
 
 <div class="row">
   <div class="col-lg-8">
@@ -55,9 +61,9 @@
           <div class="list-group-item d-flex justify-content-between">
             <span>{{ item.release.version }}</span>
             {% if item.compatible and item.release.approved and item.release.immutable and item.release.sha256 %}
-              <span class="badge bg-green">installierbar</span>
+              <span class="badge text-bg-success">installierbar</span>
             {% else %}
-              <span class="badge bg-secondary">gesperrt</span>
+              <span class="badge text-bg-secondary">gesperrt</span>
             {% endif %}
           </div>
         {% empty %}
diff --git a/netbox_plugin/netbox_plugin_store/version.py b/netbox_plugin/netbox_plugin_store/version.py
index 485f44a..b3f4756 100644
--- a/netbox_plugin/netbox_plugin_store/version.py
+++ b/netbox_plugin/netbox_plugin_store/version.py
@@ -1 +1 @@
-__version__ = "0.1.1"
+__version__ = "0.1.2"
diff --git a/netbox_plugin/netbox_plugin_store/views.py b/netbox_plugin/netbox_plugin_store/views.py
index b7a1202..9572db1 100644
--- a/netbox_plugin/netbox_plugin_store/views.py
+++ b/netbox_plugin/netbox_plugin_store/views.py
@@ -83,12 +83,16 @@ class PluginDetailView(StorePermissionMixin, View):
         except StoreClientError as exc:
             raise Http404(redact_text(exc)) from exc
         state = _plugin_state(plugin, set(django_settings.PLUGINS))
+        installable_releases = plugin.installable_releases(
+            runtime.netbox_version,
+            require_approval_marker=runtime.execution_mode == "agent",
+        )
         actions: list[str] = []
         if not state["installed"]:
-            if plugin.approved:
+            if plugin.approved and installable_releases:
                 actions.append("install")
         else:
-            if plugin.approved:
+            if plugin.approved and installable_releases:
                 actions.append("update")
             if state["enabled"]:
                 actions.append("disable")
@@ -107,7 +111,9 @@ class PluginDetailView(StorePermissionMixin, View):
                 "state": state,
                 "actions": actions,
                 "releases": releases,
+                "has_installable_release": bool(installable_releases),
                 "local_status": local_status,
+                "runtime": runtime,
             },
         )
 
diff --git a/netbox_plugin/pyproject.toml b/netbox_plugin/pyproject.toml
index d412d00..7421652 100644
--- a/netbox_plugin/pyproject.toml
+++ b/netbox_plugin/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "netbox-plugin-store"
-version = "0.1.1"
+version = "0.1.2"
 description = "A secure NetBox 4.6 plugin lifecycle client for the MrBlake Plugin Store"
 readme = "README.md"
 requires-python = ">=3.12"
diff --git a/netbox_plugin/tests/test_client.py b/netbox_plugin/tests/test_client.py
index 2c67f89..a8d774e 100644
--- a/netbox_plugin/tests/test_client.py
+++ b/netbox_plugin/tests/test_client.py
@@ -58,6 +58,27 @@ class URLPolicyTests(unittest.TestCase):
         with self.assertRaises(StoreClientError):
             plugin.select_release("4.6.9")
 
+    def test_only_verified_supported_artifacts_are_installable(self):
+        payload, _ = plugin_payload()
+        payload["releases"].append(
+            {
+                "version": "1.3.0",
+                "download_url": "https://store.example/source.tar.gz",
+                "sha256": "b" * 64,
+                "approved": False,
+                "immutable": True,
+                "artifact_kind": "source_archive",
+                "min_netbox_version": "4.6.5",
+                "max_netbox_version": "4.6.8",
+            }
+        )
+        plugin = CatalogPlugin.from_mapping(payload)
+
+        self.assertEqual(
+            tuple(release.version for release in plugin.installable_releases("4.6.8")),
+            ("1.2.0",),
+        )
+
 
 class _Response(io.BytesIO):
     def __init__(self, body):
diff --git a/store/templates/admin/dashboard.php b/store/templates/admin/dashboard.php
index b116480..fa083b7 100644
--- a/store/templates/admin/dashboard.php
+++ b/store/templates/admin/dashboard.php
@@ -126,7 +126,7 @@ include dirname(__DIR__) . '/partials/head.php';
       <table class="admin-table release-admin-table">
         <thead><tr><th>Plugin / Version</th><th>Artefakt</th><th>Integrität</th><th>Status</th><th>Aktionen</th></tr></thead>
         <tbody>
-        <?php if (($releases ?? []) === []): ?><tr><td colspan="5" class="empty-row">Keine installierbaren Artefakte gefunden. Prüfe Version und Build-Metadaten des Repositorys.</td></tr><?php endif; ?>
+        <?php if (($releases ?? []) === []): ?><tr><td colspan="5" class="empty-row">Keine installierbaren Artefakte gefunden. Bei Repositorys ohne Release erzeugt eine erneute Synchronisierung automatisch ein commitgebundenes Source-Artefakt, sofern das Python-Paket eine Version definiert.</td></tr><?php endif; ?>
         <?php foreach (($releases ?? []) as $release): ?>
           <?php $releasePlugin = $release['plugin'] ?? []; $releaseErrors = Approval::releaseErrors($releasePlugin, $release); ?>
           <tr>