feat(dash): surface waiting lane host-neutral as agent

[xiaods]

The session dash panel displayed Waiting on: codex for goals whose latest run classification is codex-ready (CODEX_READY_CLASSIFICATIONS). That reads as a product reference (Codex CLI) even though the lane is actionable by any agent host — Pi, Codex, etc. codex is LoopX's internal classification for an agent-actionable lane (session_runtime_status_waiting_on treats agent/codex as synonyms).

Change: map the codex waiting classification to the host-neutral agent word at the session-dash projection layer. Both words classify identically in the status-bucket logic, so bucket behavior is unchanged.

• loopx/presentation/projections/session_dash.py: waiting_on == "codex" → "agent" with a comment explaining the synonym.
• examples/session-dash-panel-smoke.py: asserts a codex-classified fixture goal projects waiting_on == "agent".

Validation: session-dash-panel-smoke OK (14 tests), static-site-presentation-smoke OK, cli-command-module-contract OK, ruff/py_compile/diff-check clean. Verified live: loopx-goal now projects waiting_on=agent (was codex), status_bucket unchanged.

[huangruiteng]

Verdict

APPROVE - no blockers. Reviewed exact head 756247f4fa72e28696889fc7cf11d3b161da9044; session-dash smoke passes locally and all checks pass.

动机

session dash 对 codex-ready 分类显示 Waiting on: codex，容易被误读为 Codex CLI 产品引用，但该 lane 实际可由任意 agent host（Codex、Pi 等）执行。PR 在 projection 层把 codex 映射为 host-neutral 的 agent。

改动思路

只在展示投影层做同义词映射，status_bucket 分类逻辑不变，因此不会改变状态分组行为。

具体改动

• loopx/presentation/projections/session_dash.py：_goal_entry 中 waiting_on == "codex" 时改为 "agent"，并加注释说明同义词。
• examples/session-dash-panel-smoke.py：新增断言，codex-main-control session 的 goal 投影 waiting_on == "agent" 且不等于 "codex"。

关键代码讲解

1. _goal_entry 的 waiting_on fallback：先取 status item，再取 run goal，最后默认 "auto"；映射发生在最终显示前，确保 status_bucket 仍按原始分类工作。
2. 回归 smoke 直接覆盖原 codex 分类的 goal，防止未来再次暴露内部分类名。

对主干的风险

无阻塞项。改动只影响展示字段，bucket 行为不变，smoke 和 CI 均通过。该 PR 目标是 frontend prototype 分支，不涉及 main。

我的整体评价

改动小、意图清晰、测试覆盖到位，可以合并到特性分支。

English Verdict

Approve. Maps the codex waiting classification to host-neutral agent at the dash projection layer without changing bucket behavior; smoke and CI pass at 756247f4fa72e28696889fc7cf11d3b161da9044.