feat: complete catalog-driven preprocessing

frontend/src/shell/WorkspaceManager.tsx

@@ -460,10 +460,10 @@ export function WorkspaceManager({
                 </div>
                 <div className="grid gap-3 text-sm leading-6 text-muted-foreground">
                   <p>
-                    A workspace file describes one data environment. Its <code>workspace.yaml</code> gives ThothII the workspace identity and language, the database target and schema it may query, the Evidence sources that support analysis, and the processing settings to apply. Runtime credentials are stored separately from Git.
+                    A workspace file describes one data environment. Its <code>workspace.yaml</code> gives ThothII the workspace identity and language, plus any Evidence sources that support analysis. Database metadata and connection settings are managed separately in the PostgreSQL Catalog.
                   </p>
                   <p>
-                    One Git repository can contain many workspaces. At its root, <code>thoth-workspaces.yaml</code> lists them, and each workspace has its own directory, <code>workspace.yaml</code>, database target and access method, and Evidence sources. This keeps separate data environments and supporting material distinct while versioning them together.
+                    One Git repository can contain many workspaces. At its root, <code>thoth-workspaces.yaml</code> lists them, and each workspace has its own directory and <code>workspace.yaml</code>. This keeps workspace identity and supporting Evidence distinct while versioning them together.
                   </p>
                 </div>
                 <div>
@@ -501,7 +501,7 @@ export function WorkspaceManager({
                     You can inspect workspaces. Workspace updates, validation, and connection tests require workspace management permission.
                   </p>
                 )}
-                <p className="text-sm leading-6 text-muted-foreground">Selecting a workspace from the left opens its own revision, database and Evidence configuration, runtime requirements, validation, and connection checks.</p>
+                <p className="text-sm leading-6 text-muted-foreground">Selecting a workspace from the left opens its own revision, Evidence configuration, runtime requirements, validation, and connection checks. Database configuration is available in Database management.</p>
               </section>
             ) : (
               <section className="mx-auto max-w-4xl space-y-5">
@@ -521,7 +521,7 @@ export function WorkspaceManager({
                     <div className="max-w-3xl">
                       <h3 className="font-heading text-lg font-semibold">About this workspace</h3>
                       <p className="mt-1 text-sm leading-6 text-muted-foreground">
-                        <span className="font-medium text-foreground">{selectedSummary.displayName}</span> is one workspace in the shared repository. Its workspace.yaml defines the database target, processing settings, and Evidence sources for this data environment. Other workspaces in the same repository can use different databases and keep their Evidence separate.
+                        <span className="font-medium text-foreground">{selectedSummary.displayName}</span> is one workspace in the shared repository. Its workspace.yaml defines identity, language, and optional Evidence sources for this data environment. Its database is configured and described in the PostgreSQL Catalog.
                       </p>
                       <p className="mt-2 text-sm leading-6 text-muted-foreground">
                         The active revision shown below is the exact version currently activated by ThothII. Reading or checking it does not modify the repository. Source changes are made in Git and become available after a new revision is fetched, validated, and activated.
@@ -531,14 +531,7 @@ export function WorkspaceManager({
                     <dl className="grid gap-3 rounded-lg border border-border bg-muted/20 p-4 text-sm sm:grid-cols-2">
                       <div><dt className="text-xs text-muted-foreground">Source file</dt><dd className="font-mono">{selectedSummary.file}</dd></div>
                       <div><dt className="text-xs text-muted-foreground">Active revision</dt><dd className="truncate font-mono">{detailQuery.data.revision.commit}</dd></div>
-                      <div>
-                        <dt className="text-xs text-muted-foreground">Database</dt>
-                        <dd className="grid gap-0.5 font-mono text-xs">
-                          <span>engine: {detailQuery.data.workspace.dwh.engine}</span>
-                          <span>database: {detailQuery.data.workspace.dwh.database}</span>
-                          <span>schema: {detailQuery.data.workspace.dwh.schema}</span>
-                        </dd>
-                      </div>
+                      <div><dt className="text-xs text-muted-foreground">Workspace language</dt><dd className="font-mono text-xs">{detailQuery.data.workspace.workspace.language}</dd></div>
                       <div><dt className="text-xs text-muted-foreground">Runtime status</dt><dd>{stateLabel(runtime.configurationState)}</dd></div>
                     </dl>