android: a playlist's cover from a photo on the phone

The storage plugin gains pick_image — the document picker limited to
images, the picked content copied into the app's cache so the Rust side
gets a plain path. playlist_cover_set(id, path) is the desktop pick's
install step split out and shared (squared, the master cover, the row's
revision moved). A playlist's sheet offers Choose cover photo and Remove
custom cover; the mock walk exercises both.

crates/tauri-plugin-storage/permissions/autogenerated/commands/pick_image.toml

@@ -0,0 +1,13 @@
+# Automatically generated - DO NOT EDIT!
+
+"$schema" = "../../schemas/schema.json"
+
+[[permission]]
+identifier = "allow-pick-image"
+description = "Enables the pick_image command without any pre-configured scope."
+commands.allow = ["pick_image"]
+
+[[permission]]
+identifier = "deny-pick-image"
+description = "Denies the pick_image command without any pre-configured scope."
+commands.deny = ["pick_image"]

crates/tauri-plugin-storage/permissions/autogenerated/reference.md

@@ -9,6 +9,7 @@ whether it is granted, and the system screen that grants it.
 - `allow-pick-folder`
 - `allow-all-files-access`
 - `allow-request-all-files-access`
+- `allow-pick-image`
 
 ## Permission Table
 
@@ -74,6 +75,32 @@ Denies the pick_folder command without any pre-configured scope.
 <tr>
 <td>
 
+`storage:allow-pick-image`
+
+</td>
+<td>
+
+Enables the pick_image command without any pre-configured scope.
+
+</td>
+</tr>
+
+<tr>
+<td>
+
+`storage:deny-pick-image`
+
+</td>
+<td>
+
+Denies the pick_image command without any pre-configured scope.
+
+</td>
+</tr>
+
+<tr>
+<td>
+
 `storage:allow-request-all-files-access`
 
 </td>

crates/tauri-plugin-storage/permissions/default.toml

@@ -6,4 +6,4 @@ The phone's storage: pick a library folder (a Storage Access Framework tree,
 resolved to a path when the volume allows), and Android's all-files access —
 whether it is granted, and the system screen that grants it.
 """
-permissions = ["allow-pick-folder", "allow-all-files-access", "allow-request-all-files-access"]
+permissions = ["allow-pick-folder", "allow-all-files-access", "allow-request-all-files-access", "allow-pick-image"]

crates/tauri-plugin-storage/permissions/schemas/schema.json

@@ -318,6 +318,18 @@
           "const": "deny-pick-folder",
           "markdownDescription": "Denies the pick_folder command without any pre-configured scope."
         },
+        {
+          "description": "Enables the pick_image command without any pre-configured scope.",
+          "type": "string",
+          "const": "allow-pick-image",
+          "markdownDescription": "Enables the pick_image command without any pre-configured scope."
+        },
+        {
+          "description": "Denies the pick_image command without any pre-configured scope.",
+          "type": "string",
+          "const": "deny-pick-image",
+          "markdownDescription": "Denies the pick_image command without any pre-configured scope."
+        },
         {
           "description": "Enables the request_all_files_access command without any pre-configured scope.",
           "type": "string",
@@ -331,10 +343,10 @@
           "markdownDescription": "Denies the request_all_files_access command without any pre-configured scope."
         },
         {
-          "description": "The phone's storage: pick a library folder (a Storage Access Framework tree,\nresolved to a path when the volume allows), and Android's all-files access —\nwhether it is granted, and the system screen that grants it.\n\n#### This default permission set includes:\n\n- `allow-pick-folder`\n- `allow-all-files-access`\n- `allow-request-all-files-access`",
+          "description": "The phone's storage: pick a library folder (a Storage Access Framework tree,\nresolved to a path when the volume allows), and Android's all-files access —\nwhether it is granted, and the system screen that grants it.\n\n#### This default permission set includes:\n\n- `allow-pick-folder`\n- `allow-all-files-access`\n- `allow-request-all-files-access`\n- `allow-pick-image`",
           "type": "string",
           "const": "default",
-          "markdownDescription": "The phone's storage: pick a library folder (a Storage Access Framework tree,\nresolved to a path when the volume allows), and Android's all-files access —\nwhether it is granted, and the system screen that grants it.\n\n#### This default permission set includes:\n\n- `allow-pick-folder`\n- `allow-all-files-access`\n- `allow-request-all-files-access`"
+          "markdownDescription": "The phone's storage: pick a library folder (a Storage Access Framework tree,\nresolved to a path when the volume allows), and Android's all-files access —\nwhether it is granted, and the system screen that grants it.\n\n#### This default permission set includes:\n\n- `allow-pick-folder`\n- `allow-all-files-access`\n- `allow-request-all-files-access`\n- `allow-pick-image`"
         }
       ]
     }