Merge remote-tracking branch 'origin/v3' into v3

# Conflicts:
#	tests/fixtures/architecture/dependency-baseline.json

tests/fixtures/architecture/dependency-baseline.json

@@ -13,8 +13,8 @@
     "runtime_to_db": [],
     "workflow_to_db": []
   },
-  "edge_count": 6463,
-  "edge_sha256": "086c14fef27199ae6f19fbe5e6a07c348cd1dc8a406ab3129a341647fd90a28f",
+  "edge_count": 6470,
+  "edge_sha256": "571b66b75b51e801a053e4164c5dbe0eb580b91f20cf84fa554e13b9469dd650",
   "edges": [
     "app -> app.runtime",
     "app -> app.runtime.compat",
@@ -2062,7 +2062,6 @@
     "app.api.endpoints.plugin -> app.application",
     "app.api.endpoints.plugin -> app.application.commands",
     "app.api.endpoints.plugin -> app.application.configuration",
-    "app.api.endpoints.plugin -> app.application.database",
     "app.api.endpoints.plugin -> app.application.plugin",
     "app.api.endpoints.plugin -> app.application.plugin.config",
     "app.api.endpoints.plugin -> app.application.plugin.folders",
@@ -2079,6 +2078,7 @@
     "app.api.endpoints.plugin -> app.runtime.tasks",
     "app.api.endpoints.plugin -> app.schemas",
     "app.api.endpoints.plugin -> app.schemas.common",
+    "app.api.endpoints.plugin -> app.schemas.exception",
     "app.api.endpoints.plugin -> app.schemas.plugin",
     "app.api.endpoints.plugin -> app.schemas.response",
     "app.api.endpoints.plugin -> app.schemas.token",
@@ -2579,6 +2579,7 @@
     "app.application.messaging.chat -> app.runtime.observability",
     "app.application.messaging.chat -> app.schemas",
     "app.application.messaging.chat -> app.schemas.agent",
+    "app.application.messaging.chat -> app.schemas.exception",
     "app.application.messaging.interaction -> app.schemas",
     "app.application.messaging.interaction -> app.schemas.message",
     "app.application.messaging.interaction -> app.schemas.notification",
@@ -2665,7 +2666,12 @@
     "app.application.plugin.folders -> app.schemas",
     "app.application.plugin.folders -> app.schemas.types",
     "app.application.plugin.install -> app.application",
-    "app.application.plugin.install -> app.application.database",
+    "app.application.plugin.install -> app.application.plugin",
+    "app.application.plugin.install -> app.application.plugin.lifecycle",
+    "app.application.plugin.install -> app.runtime",
+    "app.application.plugin.install -> app.runtime.log",
+    "app.application.plugin.install -> app.schemas",
+    "app.application.plugin.install -> app.schemas.exception",
     "app.application.recognition -> app.application",
     "app.application.recognition -> app.application.configuration",
     "app.application.recognition -> app.schemas",
@@ -3694,10 +3700,10 @@
     "app.db.session -> app.runtime.config",
     "app.db.session -> app.runtime.log",
     "app.db.session -> app.runtime.observability",
-    "app.db.worker -> app.application",
-    "app.db.worker -> app.application.database",
     "app.db.worker -> app.runtime",
     "app.db.worker -> app.runtime.observability",
+    "app.db.worker -> app.schemas",
+    "app.db.worker -> app.schemas.exception",
     "app.doctor.checks -> app.adapters",
     "app.doctor.checks -> app.adapters.system",
     "app.doctor.checks -> app.adapters.system.backup",
@@ -3821,7 +3827,6 @@
     "app.factory -> app.api",
     "app.factory -> app.api.response",
     "app.factory -> app.application",
-    "app.factory -> app.application.database",
     "app.factory -> app.application.plugin",
     "app.factory -> app.application.plugin.routes",
     "app.factory -> app.application.security",
@@ -3835,6 +3840,7 @@
     "app.factory -> app.runtime.observability",
     "app.factory -> app.runtime.settings",
     "app.factory -> app.schemas",
+    "app.factory -> app.schemas.exception",
     "app.factory -> app.schemas.mcp",
     "app.factory -> app.schemas.openai",
     "app.factory -> app.schemas.response",
@@ -6056,6 +6062,7 @@
     "app.startup.lifecycle -> app.adapters.network.http",
     "app.startup.lifecycle -> app.application",
     "app.startup.lifecycle -> app.application.plugin",
+    "app.startup.lifecycle -> app.application.plugin.lifecycle",
     "app.startup.lifecycle -> app.application.plugin.runtime",
     "app.startup.lifecycle -> app.chain",
     "app.startup.lifecycle -> app.chain.system",
@@ -6480,7 +6487,7 @@
     "app.workflow.actions.transfer_file -> app.workflow",
     "app.workflow.actions.transfer_file -> app.workflow.actions"
   ],
-  "module_count": 799,
+  "module_count": 800,
   "modules": [
     "app",
     "app.adapters",
@@ -6772,6 +6779,7 @@
     "app.application.plugin.data",
     "app.application.plugin.folders",
     "app.application.plugin.install",
+    "app.application.plugin.lifecycle",
     "app.application.plugin.routes",
     "app.application.plugin.runtime",
     "app.application.recognition",