Route open providers by request mode

docs/DEV_PLUGINS.md

@@ -97,8 +97,8 @@ Frontend bundles are mounted with a plugin-scoped API created by
   a concrete editor plugin.
 
 Editor/viewer plugins contribute providers with `contributes.openProviders`.
-Workbench selects by resource kind, extension/mime, context (`generic-text`,
-`generic-markdown`, `notes-markdown`), user preference, priority, then
+Workbench selects by resource kind, request mode, extension/mime, context
+(`generic-text`, `generic-markdown`, `notes-markdown`), user preference, priority, then
 deterministic `pluginId/providerId` tie-break. If nothing matches, Workbench
 shows `no-provider` fallback instead of a core editor.
 

docs/PLUGIN_RUNTIME.md

@@ -317,7 +317,8 @@ the Workbench helper.
           {
             "kind": "vault-file",
             "extensions": [".md", ".markdown"],
-            "contexts": ["generic-markdown", "notes-markdown"]
+            "contexts": ["generic-markdown", "notes-markdown"],
+            "modes": ["view"]
           },
           {
             "kind": "vault-file",
@@ -333,7 +334,7 @@ the Workbench helper.
 ```
 
 Selection uses enabled loaded/degraded provider plugins, resource kind,
-extension/mime, context, user preference, priority, then deterministic
+request mode, extension/mime, context, user preference, priority, then deterministic
 `pluginId/providerId` fallback. If nothing matches, Workbench returns
 `status: "no-provider"` and shows the fallback view instead of a core editor.