Added direct-chat launchers for assistant plugins and a dialog to reconfigure them (#935)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Plugins/assistants/README.md

@@ -80,12 +80,11 @@ Each assistant plugin lives in its own directory under the assistants plugin roo
 ```
 
 ## Structure
-- `ASSISTANT` is the root table. It must contain `Title`, `Description`, `SystemPrompt`, `SubmitText`, `AllowProfiles`, and the nested `UI` definition.
+- `ASSISTANT` is the root table. Every assistant requires `Title` and `Description`.
+- Form assistants additionally require `SystemPrompt`, `SubmitText`, `AllowProfiles`, and a nested `UI` definition.
+- Direct chat launchers instead require `LaunchBehavior = "OPEN_WORKSPACE_CHAT_BY_NAME"` and `WorkspaceName`. AI Studio stops reading the form-only fields as soon as a launch behavior is active, so older launchers that still carry them keep working.
 - `DEPLOYED_USING_CONFIG_SERVER` identifies who manages the assistant plugin. Set it to `false` for locally managed plugins. A missing field is also treated as local for compatibility with existing plugins. Enterprise-distributed plugins must set it to `true` and cannot be revised with AI in AI Studio.
 - `AI_STUDIO_ASSISTANT_BUILDER = {Generated = true, SchemaVersion = 1}` is reserved for plugins generated by the AI Studio Assistant Builder. It enables Builder-specific actions such as safe deletion and must not be added to manually authored or enterprise-distributed assistants. Newly generated Builder assistants always set `DEPLOYED_USING_CONFIG_SERVER = false` explicitly.
-- `ASSISTANT` may optionally define direct-launch metadata for assistant tiles:
-  - `LaunchBehavior = "OPEN_WORKSPACE_CHAT_BY_NAME"`
-  - `WorkspaceName = "<target workspace name>"`
 - `UI.Type` is always `"FORM"` and `UI.Children` is a list of component tables.
 - Each component table declares `Type`, an optional `Children` array, and a `Props` table that feeds the component’s parameters.
 
@@ -99,8 +98,6 @@ ASSISTANT = {
     ["SystemPrompt"] = "",
     ["SubmitText"] = "",
     ["AllowProfiles"] = true,
-    ["LaunchBehavior"] = "OPEN_WORKSPACE_CHAT_BY_NAME",
-    ["WorkspaceName"] = "",
     ["UI"] = {
         ["Type"] = "FORM",
         ["Children"] = {
@@ -117,21 +114,38 @@ Assistant plugins can optionally skip the normal assistant page and open a chat
 ASSISTANT = {
     ["Title"] = "Open Chat",
     ["Description"] = "Open a new chat in the XXX workspace.",
-    ["SystemPrompt"] = "",
-    ["SubmitText"] = "Start",
-    ["AllowProfiles"] = true,
     ["LaunchBehavior"] = "OPEN_WORKSPACE_CHAT_BY_NAME",
     ["WorkspaceName"] = "XXX",
-    ["UI"] = {
-        ["Type"] = "FORM",
-        ["Children"] = {}
-    }
+    ["ProviderId"] = "11111111-1111-1111-1111-111111111111", -- optional
+    ["ProfileId"] = "22222222-2222-2222-2222-222222222222", -- optional
+    ["ChatTemplateId"] = "33333333-3333-3333-3333-333333333333", -- optional
+    ["DataSourceIds"] = { -- optional; when present, at least one unique data source is required
+        "44444444-4444-4444-4444-444444444444",
+        "55555555-5555-5555-5555-555555555555",
+    },
 }
 ```
 
 - `WorkspaceName` is resolved case-insensitively after trimming.
 - If the workspace does not exist yet, AI Studio creates it automatically.
-- The opened chat uses the normal default chat settings of AI Studio.
+- Omitted optional IDs use the chat defaults active when the tile is opened. An explicit empty GUID selects no profile or no chat template; an empty provider or data-source GUID is invalid.
+- `ProviderId` overrides both the chat-specific and app-wide default provider. It must name a provider that is permitted for chats at the required confidence level.
+- Explicit data sources are enabled and manually preselected, automatic source selection is disabled, and the normal automatic-validation setting is retained. Every referenced source must currently be available and permitted for the effective provider.
+- Invalid or unavailable references stop the launch with an error before a workspace or chat is created.
+- A selected chat template supplies the chat system prompt, profile allowance, predefined user prompt, attachments, and cloned example conversation. A launcher `SystemPrompt`, if retained in an older plugin, is ignored, so there is never a second competing system prompt.
+- When the selected chat template does not allow profiles, the template wins: the launcher `ProfileId` is dropped and the chat starts without a profile. This matches the disabled profile selection such a template produces in the chat.
+- The predefined user prompt and the attachments of the selected chat template are placed into the chat input, unless the user already has an unsent draft there.
+
+### Editing a launcher in AI Studio
+Users can change a launcher without touching Lua and without asking a model: the tile on the assistants page and the plugins page both offer a settings dialog for the name, the title, the description, and every chat selection above. Changing a launcher is picking from drop-downs, so there is nothing to prompt about, and locally managed launchers therefore get this dialog instead of the AI revision.
+
+Saving rewrites the whole `plugin.lua` in a canonical shape. Comments, formatting, and anything beyond the metadata and the `ASSISTANT` table would be lost that way, so AI Studio offers the dialog only for launchers that are:
+
+- locally managed, meaning not internal and not deployed by a configuration server,
+- made of a single `plugin.lua` without companion Lua files, and
+- free of `ICON_SVG` and any `require(...)`.
+
+Launchers with an own icon or extra Lua code keep the plugin code editor and the AI revision, so nothing an author wrote gets dropped. `AI_STUDIO_ASSISTANT_BUILDER` is carried over unchanged: the dialog never adds it to a manually authored plugin.
 
 
 #### Supported types (matching the Blazor UI components):