Promote Workspace to Full Standard Entity

• has_history: false → true: no justification exists; the bitemporal table already stores full version history; the audit trail must be viewable.
• No detail_fields: replace hand-crafted WorkspaceDetailDialog with a generated version driven by the model.
• No generator: add workspace_generator.hpp/.cpp for test data generation.

[workspace] Add history support and generator to workspace entity

File: projects/ores.codegen/models/workspace/workspace_domain_entity.json

Add to the top-level domain_entity section (alongside existing has_tenant_id):

"deviation_rationale_tenant_id":    "Workspace is system-wide; cross-tenant isolation is handled via IAM, not per-tenant row scoping.",
"deviation_rationale_workspace_id": "A workspace cannot belong to a workspace; self-referential membership is undefined.",

Add/replace in the qt section:

"has_history": true,
"has_pagination": false,
"deviation_rationale_pagination": "A tenant holds at most ~20 active workspaces by product design; the tree view displaying the parent-workspace hierarchy does not support standard pagination.",

"history_request_class":  "workspace::messaging::get_workspace_history_request",
"history_response_class": "workspace::messaging::get_workspace_history_response",
"history_message_type":   "get_workspace_history_request",

"detail_fields": [
  {"field": "name",                "label": "Name",        "widget": "nameEdit",        "type": "line_edit",      "is_key": true, "is_required": true, "placeholder": "Unique workspace name"},
  {"field": "description",         "label": "Description", "widget": "descriptionEdit", "type": "plain_text_edit"},
  {"field": "source_path",         "label": "Source Path", "widget": "sourcePathEdit",  "type": "line_edit",      "placeholder": "Optional data source path"},
  {"field": "parent_workspace_id", "label": "Parent",      "widget": "parentEdit",      "type": "line_edit",      "readonly": true, "placeholder": "Inherited from (UUID)"},
  {"field": "owner_id",            "label": "Owner",       "widget": "ownerEdit",       "type": "line_edit",      "readonly": true},
  {"field": "status_code",         "label": "Status",      "widget": "statusEdit",      "type": "line_edit",      "readonly": true}
]

Remove the explicit "has_history": false and "has_pagination": false lines (replacing them with the above — pagination keeps false but now has rationale).

cd projects/ores.codegen
./run_generator.sh models/workspace/workspace_domain_entity.json --profile all-cpp

Expected new/changed files in projects/ores.workspace.api/:

• include/ores.workspace.api/generators/workspace_generator.hpp — new
• src/generators/workspace_generator.cpp — new
• include/ores.workspace.api/messaging/workspace_protocol.hpp — add get_workspace_history_request/response

File: projects/ores.workspace.api/CMakeLists.txt

Add the generator source files if they are not picked up automatically via GLOB.

Ask user to build ores.workspace.api:

make -C build/output/linux-clang-debug-make -j$(nproc) ores.workspace.api

[workspace] Add workspace history repository and service methods

Files:

• projects/ores.workspace.core/include/ores.workspace.core/repository/workspace_repository.hpp
• projects/ores.workspace.core/src/repository/workspace_repository.cpp

The repository already has read_all(ctx, id) which returns all versions of a single workspace. Add the standard-named alias:

std::vector<domain::workspace>
read_history(context ctx, const boost::uuids::uuid& id);

Implementation: same bitemporal query as read_all(id), ordered newest-first by valid_from DESC.

Files:

• projects/ores.workspace.core/include/ores.workspace.core/service/workspace_service.hpp
• projects/ores.workspace.core/src/service/workspace_service.cpp

Add:

std::vector<domain::workspace>
get_workspace_history(const boost::uuids::uuid& id);

Delegates to workspace_repo_.read_history(ctx, id).

Files:

• projects/ores.workspace.core/include/ores.workspace.core/messaging/workspace_handler.hpp
• projects/ores.workspace.core/src/messaging/workspace_handler.cpp

Add routing for get_workspace_history_request → call service_.get_workspace_history(id), return get_workspace_history_response{workspaces}.

Ask user to build ores.workspace.core:

make -C build/output/linux-clang-debug-make -j$(nproc) ores.workspace.core

[qt] Add workspace history dialog and replace hand-crafted detail dialog

Run codegen for the Qt profile to get the detail dialog and history dialog:

cd projects/ores.codegen
./run_generator.sh models/workspace/workspace_domain_entity.json --profile qt

This will generate or update all Qt files. Do not commit the regenerated WorkspaceMdiWindow or ClientWorkspaceModel files — these are justified deviations (tree view, no pagination). Only integrate:

• WorkspaceDetailDialog.hpp/.cpp/.ui — replaces hand-crafted version
• WorkspaceHistoryDialog.hpp/.cpp/.ui — new

Review generated WorkspaceDetailDialog carefully: the existing hand-crafted dialog has a Provenance tab showing read-only audit fields. The generated version may or may not include this; manually merge the provenance widget if the generator omits it.

Files:

• projects/ores.qt.workspace/include/ores.qt/WorkspaceMdiWindow.hpp
• projects/ores.qt.workspace/src/WorkspaceMdiWindow.cpp

Add to the private section of the header:

QAction* historyAction_{nullptr};
void onHistoryRequested();

In WorkspaceMdiWindow.cpp, in the toolbar setup block (after editAction_):

historyAction_ = toolbar_->addAction(
    QIcon::fromTheme("document-open-recent"), tr("History"));
historyAction_->setEnabled(false);
connect(historyAction_, &QAction::triggered,
        this, &WorkspaceMdiWindow::onHistoryRequested);

Enable/disable historyAction_ alongside editAction_ in the selection-changed handler.

Implement onHistoryRequested():

void WorkspaceMdiWindow::onHistoryRequested() {
    const auto* item = treeWidget_->currentItem();
    if (!item) return;
    const auto id = item->data(0, Qt::UserRole).toString();
    auto* dlg = new WorkspaceHistoryDialog(clientManager_, id, this);
    dlg->setAttribute(Qt::WA_DeleteOnClose);
    dlg->exec();
}

File: projects/ores.qt.workspace/CMakeLists.txt

Add WorkspaceHistoryDialog.hpp, WorkspaceHistoryDialog.cpp, WorkspaceHistoryDialog.ui if not picked up by GLOB.

Ask user to build ores.qt.workspace:

make -C build/output/linux-clang-debug-make -j$(nproc) ores.qt.workspace

Manual smoke test:

1. Launch the application and open the Workspace MDI window.
2. Select any workspace → History button becomes enabled.
3. Click History → WorkspaceHistoryDialog opens with the full version list.
4. Click Edit (or Add) → generated WorkspaceDetailDialog opens with Name, Description, Source Path, Parent, Owner, Status fields.