chore: rename startup logs to agent logs (#8649)

* chore: rename startup logs to agent logs

This also adds a `source` property to every agent log. It
should allow us to group logs and display them nicer in
the UI as they stream in.

* Fix migration order

* Fix naming

* Rename the frontend

* Fix tests

* Fix down migration

* Match enums for workspace agent logs

* Fix inserting log source

* Fix migration order

* Fix logs tests

* Fix psql insert

cli/ssh.go

@@ -186,7 +186,7 @@ func (r *RootCmd) ssh() *clibase.Cmd {
 			// This is required in "stdio" mode so a connecting indicator can be displayed.
 			err = cliui.Agent(ctx, inv.Stderr, workspaceAgent.ID, cliui.AgentOptions{
 				Fetch:     client.WorkspaceAgent,
-				FetchLogs: client.WorkspaceAgentStartupLogsAfter,
+				FetchLogs: client.WorkspaceAgentLogsAfter,
 				Wait:      wait,
 			})
 			if err != nil {