Codemod db pass-through calls: messages + runs + approvals + company (C1 part 2/3)

Rewrite ~376 call sites for messages, runs, approvalsMod, and company
domains and delete the corresponding pass-through methods on
AppDatabase / AppDatabaseBase. Structural type references
(ReturnType<HandlerDeps["db"]["getRun"]>) and SweepStaleReviewsDeps-style
mocks are updated to route through the owning sub-module.

src/main/orchestration/run-dispatch.ts

@@ -83,7 +83,7 @@ export function createRunDispatch(deps: OrchestrationDependencies) {
       params.workspace &&
       !db.claimWorkspaceLock(params.workspace.id, params.runId)
     ) {
-      db.finishRun({
+      db.runs.finishRun({
         runId: params.runId,
         status: "cancelled",
         summary: null,