fix: decode JSON model selections in projection queries

Author: BunsDev

apps/server/src/orchestration/Layers/ProjectionOverviewQuery.ts

@@ -36,12 +36,16 @@ import { ORCHESTRATION_PROJECTOR_NAMES } from "./ProjectionPipeline.ts";
 
 const ProjectionProjectOverviewRow = Schema.Struct({
   ...ProjectionProject.fields,
+  defaultModelSelection: Schema.NullOr(
+    Schema.fromJsonString(ProjectionProject.fields.defaultModelSelection),
+  ),
   scripts: Schema.fromJsonString(Schema.Array(ProjectScript)),
   activeThreadCount: NonNegativeInt,
 });
 
 const ProjectionThreadOverviewRow = Schema.Struct({
   ...ProjectionThread.fields,
+  modelSelection: Schema.NullOr(Schema.fromJsonString(ProjectionThread.fields.modelSelection)),
   lastUserMessageAt: Schema.NullOr(IsoDateTime),
   pendingApprovalCount: NonNegativeInt,
   pendingUserInputCount: NonNegativeInt,

apps/server/src/orchestration/Layers/ProjectionSnapshotQuery.test.ts

@@ -47,7 +47,7 @@ projectionSnapshotLayer("ProjectionSnapshotQuery", (it) => {
           'Project 1',
           '/tmp/project-1',
           'gpt-5-codex',
-          NULL,
+          '{"provider":"codex","model":"gpt-5-codex"}',
           NULL,
           '[{"id":"script-1","name":"Build","command":"bun run build","icon":"build","runOnWorktreeCreate":false}]',
           '2026-02-24T00:00:00.000Z',
@@ -62,6 +62,7 @@ projectionSnapshotLayer("ProjectionSnapshotQuery", (it) => {
           project_id,
           title,
           model,
+          model_selection,
           branch,
           worktree_path,
           latest_turn_id,
@@ -74,6 +75,7 @@ projectionSnapshotLayer("ProjectionSnapshotQuery", (it) => {
           'project-1',
           'Thread 1',
           'gpt-5-codex',
+          '{"provider":"codex","model":"gpt-5-codex"}',
           NULL,
           NULL,
           'turn-1',
@@ -239,6 +241,8 @@ projectionSnapshotLayer("ProjectionSnapshotQuery", (it) => {
           title: "Project 1",
           workspaceRoot: "/tmp/project-1",
           defaultModel: "gpt-5-codex",
+          defaultModelSelection: { provider: "codex", model: "gpt-5-codex" },
+          iconPath: null,
           scripts: [
             {
               id: "script-1",
@@ -259,6 +263,7 @@ projectionSnapshotLayer("ProjectionSnapshotQuery", (it) => {
           projectId: asProjectId("project-1"),
           title: "Thread 1",
           model: "gpt-5-codex",
+          modelSelection: { provider: "codex", model: "gpt-5-codex" },
           interactionMode: "chat",
           runtimeMode: "full-access",
           branch: null,

apps/server/src/orchestration/Layers/ProjectionSnapshotQuery.ts

@@ -46,6 +46,9 @@ import {
 const decodeReadModel = Schema.decodeUnknownEffect(OrchestrationReadModel);
 const ProjectionProjectDbRowSchema = ProjectionProject.mapFields(
   Struct.assign({
+    defaultModelSelection: Schema.NullOr(
+      Schema.fromJsonString(ProjectionProject.fields.defaultModelSelection),
+    ),
     scripts: Schema.fromJsonString(Schema.Array(ProjectScript)),
   }),
 );
@@ -56,7 +59,11 @@ const ProjectionThreadMessageDbRowSchema = ProjectionThreadMessage.mapFields(
   }),
 );
 const ProjectionThreadProposedPlanDbRowSchema = ProjectionThreadProposedPlan;
-const ProjectionThreadDbRowSchema = ProjectionThread;
+const ProjectionThreadDbRowSchema = ProjectionThread.mapFields(
+  Struct.assign({
+    modelSelection: Schema.NullOr(Schema.fromJsonString(ProjectionThread.fields.modelSelection)),
+  }),
+);
 const ProjectionThreadActivityDbRowSchema = ProjectionThreadActivity.mapFields(
   Struct.assign({
     payload: Schema.fromJsonString(Schema.Unknown),