Codemod db pass-through calls to domain modules: tasks + agents (C1 part 1/3)

Rewrite ~525 call sites from `db.<method>()` to `db.<module>.<method>()`
for tasks and agents domains (including `getAgent`/`findAgent`/`getTask`
which live on the `entityCrud` field). Delete the corresponding
pass-through methods on AppDatabaseBase. Structural types that narrowed
`db` to a bag of flat methods (CapabilityMatchDb, EscalationDeps,
SweepStaleReviewsDeps) are reshaped to match the new namespace. Internal
callback references inside database.ts/database-base.ts now invoke the
owning module directly (e.g. `this.agents.saveAgent`) rather than the
deleted pass-through.

The codemod lives at scripts/codemod/remove-appdatabase-passthrough.mjs
and filters by owning module + optional explicit method list. It is
idempotent and does not re-rewrite already-namespaced calls.

src/main/orchestration/scheduler-housekeeping.ts

@@ -34,7 +34,7 @@ export function createHousekeepingScheduler(
             const currentMonth = new Date().toISOString().slice(0, 7);
             const lastResetMonth = db.getLastBudgetResetMonth(company.id) ?? "";
             if (currentMonth !== lastResetMonth) {
-              db.resetMonthlyBudgets(company.id);
+              db.agents.resetMonthlyBudgets(company.id);
               db.setLastBudgetResetMonth(company.id, currentMonth);
               logger.info(`[housekeeping] Reset monthly budgets for company ${company.name} (${currentMonth})`);
             }