fix: restore app-server model patch on Codex 26.707+

[WAYLON]

Summary

• Codex desktop 26.623+ / 26.707+ no longer ships the standalone app-server-manager-signals-* asset.
• Model whitelist unlock and plugin marketplace request patch currently hard-load that asset, fail with 未找到 Codex App asset: app-server-manager-signals-, and never patch sendRequest.
• Keep the legacy asset lookup first, then fall back to discovering sendRequest clients from currently loaded app bundles (app-initial / app-main chunks).

Root cause

installAppServerModelRequestPatch() and installPluginMarketplaceRequestPatch() both did:

await loadCodexAppModule("app-server-manager-signals-")

On current ChatGPT/Codex app (26.707.41301 verified), that filename prefix does not exist. The client was inlined into larger bundles, so the module loader throws and the model list injection path stalls.

Changes

• assets/inject/renderer-inject.js
  • shared loadAppServerRequestCandidates() discovery helper
  • prefer legacy asset name, then scan modulepreload/resource URLs for app bundles
  • collect nested sendRequest clients from module exports
  • use that discovery for both model whitelist and plugin marketplace request patches
  • bump model request patch version so old failed installs rebind
• crates/codex-plus-core/tests/cdp_bridge.rs
  • assertions for fallback discovery helpers / version

Test plan

• cargo test -p codex-plus-core --test cdp_bridge injection_script
• cargo build -p codex-plus-launcher --release
• Install rebuilt codex-plus-plus binary and restart Codex via Codex++
• Confirm log shows model_app_server_request_patch_installed instead of ..._failed
• Confirm custom models from relay modelList / catalog appear in the model selector

Notes

Related: #1324, #1210

Verified against local Codex app:

• app: /Applications/ChatGPT.app 26.707.41301
• old asset: missing
• live fallback import found a sendRequest export on current app bundle