feat: split memories part 2 (#19860)

Keep extracting memories out of core and moving the write trigger in the
app-server
This is temporary and it should move at the client level as a follow-up
This makes core fully independant from `codex-memories-write`

---------

Co-authored-by: Codex <noreply@openai.com>

codex-rs/app-server-protocol/schema/typescript/InternalSessionSource.ts

@@ -0,0 +1,5 @@
+// GENERATED CODE! DO NOT MODIFY BY HAND!
+
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type InternalSessionSource = "memory_consolidation";

codex-rs/app-server-protocol/schema/typescript/SessionSource.ts

@@ -1,6 +1,7 @@
 // GENERATED CODE! DO NOT MODIFY BY HAND!
 
 // This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+import type { InternalSessionSource } from "./InternalSessionSource";
 import type { SubAgentSource } from "./SubAgentSource";
 
-export type SessionSource = "cli" | "vscode" | "exec" | "mcp" | { "custom": string } | { "subagent": SubAgentSource } | "unknown";
+export type SessionSource = "cli" | "vscode" | "exec" | "mcp" | { "custom": string } | { "internal": InternalSessionSource } | { "subagent": SubAgentSource } | "unknown";

codex-rs/app-server-protocol/schema/typescript/index.ts

@@ -37,6 +37,7 @@ export type { InitializeCapabilities } from "./InitializeCapabilities";
 export type { InitializeParams } from "./InitializeParams";
 export type { InitializeResponse } from "./InitializeResponse";
 export type { InputModality } from "./InputModality";
+export type { InternalSessionSource } from "./InternalSessionSource";
 export type { LocalShellAction } from "./LocalShellAction";
 export type { LocalShellExecAction } from "./LocalShellExecAction";
 export type { LocalShellStatus } from "./LocalShellStatus";

codex-rs/app-server-protocol/src/protocol/v2.rs

@@ -1996,6 +1996,8 @@ impl From<CoreSessionSource> for SessionSource {
             CoreSessionSource::Exec => SessionSource::Exec,
             CoreSessionSource::Mcp => SessionSource::AppServer,
             CoreSessionSource::Custom(source) => SessionSource::Custom(source),
+            // We do not want to render those at the app-server level.
+            CoreSessionSource::Internal(_) => SessionSource::Unknown,
             CoreSessionSource::SubAgent(sub) => SessionSource::SubAgent(sub),
             CoreSessionSource::Unknown => SessionSource::Unknown,
         }