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.

tests/integration/autonomous-chain/task-propagation.spec.ts

@@ -15,7 +15,7 @@ describe("Step 5: Task status + comment wake propagation", () => {
     const ctoId = createAgent({ name: "CTO", role: "CTO", reportsTo: ceoId });
     const icId = createAgent({ name: "Dev", role: "Engineer", reportsTo: ctoId });
 
-    const chain = shared.db.getChainOfCommand(icId);
+    const chain = shared.db.agents.getChainOfCommand(icId);
     expect(chain).toHaveLength(2);
     expect(chain[0].id).toBe(ctoId); // immediate manager
     expect(chain[1].id).toBe(ceoId); // top level
@@ -25,7 +25,7 @@ describe("Step 5: Task status + comment wake propagation", () => {
     // Create a potential cycle (shouldn't happen in practice, but guard against it)
     const agent1 = createAgent({ name: "Agent1" });
     // agent1 reports to no one (CEO), so chain should be empty
-    const chain = shared.db.getChainOfCommand(agent1);
+    const chain = shared.db.agents.getChainOfCommand(agent1);
     expect(chain).toHaveLength(0);
   });
 
@@ -33,7 +33,7 @@ describe("Step 5: Task status + comment wake propagation", () => {
     const ceoId = createAgent({ name: "CEO", role: "CEO" });
     const ctoId = createAgent({ name: "CTO", role: "CTO", reportsTo: ceoId });
 
-    const parentTaskId = shared.db.saveTask({
+    const parentTaskId = shared.db.tasks.saveTask({
       companyId: shared.companyId,
       title: "Build feature X",
       description: "Top-level task",
@@ -43,7 +43,7 @@ describe("Step 5: Task status + comment wake propagation", () => {
       status: "in_progress",
     });
 
-    const childTaskId = shared.db.saveTask({
+    const childTaskId = shared.db.tasks.saveTask({
       companyId: shared.companyId,
       title: "Implement module A",
       description: "Subtask",
@@ -54,10 +54,10 @@ describe("Step 5: Task status + comment wake propagation", () => {
       status: "todo",
     });
 
-    const childTask = shared.db.getTask(childTaskId);
+    const childTask = shared.db.entityCrud.getTask(childTaskId);
     expect(childTask.parentId).toBe(parentTaskId);
 
-    const parentTask = shared.db.getTask(parentTaskId);
+    const parentTask = shared.db.entityCrud.getTask(parentTaskId);
     expect(parentTask.assigneeAgentId).toBe(ctoId);
   });
 });