feat(image-output): render generated images from rollout

[zein-wang]

变更概述

Render image generation results stored in Codex rollout files so generated images can appear in the Codex++ chat UI.

主要改动

• Add an image output data service that locates rollout JSONL files and extracts image_generation_call results as data URLs.
• Add the /image-outputs bridge route and wire it through the launcher data service.
• Render found images in the injected chat UI and keep the data bridge watchdog from falling back to core-only routes.
• Add data-layer and bridge route tests.

验证

• cargo test -p codex-plus-data image_outputs
• cargo test -p codex-plus-core bridge_routes_cover_all_current_paths

[#AI]

[BigPizzaV3]

Codex++ maintainer review note

当前 main 下这个 PR 仍存在 merge conflict，暂时不能合并。请先 rebase 到最新 main 并解决冲突；更新后我们会重新跑针对性测试再复审。

This PR currently conflicts with main, so it is not mergeable yet. Please rebase onto the latest main and resolve the conflicts, then we can review and test it again.

[zein-wang]

Rebased onto latest main (0ceb2d0) and resolved the conflict in apps/codex-plus-launcher/src/main.rs by keeping the upstream BridgeReinjector flow and preserving the image output bridge additions.\n\nLocal targeted tests passed:\n- cargo test -p codex-plus-data image_outputs\n- cargo test -p codex-plus-core bridge_routes_cover_all_current_paths\n\nThanks!

[zein-wang]

Updated this PR with the final image-output rendering fixes after local validation.

Changes since the previous review update:

• grouped generated images by turn_id instead of rendering the whole session image list at the latest assistant message;
• added assistant_text metadata from rollout so the renderer can anchor each generated image under the matching assistant response;
• delayed rendering when the assistant response DOM is not ready yet, and repositions existing image lists when the initial anchor was unstable;
• preserved the existing bridge/reinjection flow from latest main.

Local verification:

• node --check assets/inject/renderer-inject.js
• cargo fmt --check
• cargo test -p codex-plus-data image_outputs
• cargo test -p codex-plus-core image_output_result_json_shape_matches_rust_model
• cargo test -p codex-plus-core bridge_routes_cover_all_current_paths
• cargo build --release

Visual validation screenshots:

Commit: dca8fbe