docs: add bilingual context delivery guide and qualification plan

docs/architecture/rfcs/controller-executor-unified-contract-v0.md

@@ -861,6 +861,33 @@ full encoding and its delta encoding separately so transport reuse cannot hide
 a semantic regression. Controller/executor separation is a later independent
 comparison and cannot explain away a C1 regression.
 
+### Default adoption and retirement qualification
+
+The [context-delivery guide](../../guides/context-delivery.md#qualify-default-adoption-and-retirement)
+turns this comparison into an operator plan. Documentation may ship first;
+future broader default adoption needs both a declared DeepSeek model and a declared
+strong model to support the claimed effectiveness and complete-cost scope.
+The reference's existing Codex-scoped default remains current behavior, not proof
+that these model comparisons have passed.
+Record exact model/provider/version/effort and fixed task, source, host, tools,
+feedback, evaluator, budget and stops. Include actual final input/output,
+cached/uncached tokens, requests, detail/recovery reads, wall/IO/setup costs and
+human attention, alongside task-native outcomes, constraint misses, wrong
+actions and once-only recovery. Unknown cost is not zero; preserve repeated-run
+variation, failures and negative cases. Historical-best optimization keeps that
+native ranking, with final-retention facts separate. A Codex-scoped adapter
+cannot qualify a DeepSeek host.
+
+Keep this sequence in C1/C2/C9: explanation → both-model comparison → supported
+profile's reversible adoption/release → scoped default → named old-path
+retirement. Mixed or regressed results retain opt-in or explicit limitations.
+Retirement requires actual caller replacement, historical decoding/readback,
+supported-version and rollback coverage; full snapshots, digest checks,
+authority/identity/stops and recovery remain. Do not preserve two permanent
+semantic owners or delete a still-supported reader based on new-path existence.
+This is a qualification plan, not new experiment authority, a claim of shipped
+benefit, or a gate on other independent authorized work.
+
 The [packaged source comparison](ledger/controller-executor-unified-contract-v0/2026-10-29-packaged-source-comparison.md)
 pins mainline quota and the C1 candidate through real File/SQLite CLI delivery,
 file deltas, capture refusal/recovery and once-only settlement. Source fidelity

docs/architecture/rfcs/controller-executor-unified-contract-v0.zh-CN.md

@@ -645,6 +645,23 @@ C1 的主要对照是**同一单会话产品路径中的原 quota packet 与融
 传输复用掩盖语义退步。Controller/executor 分离是之后独立的对照，不能用来解释或
 抵消 C1 回归。
 
+### 默认采用与退役资格
+
+[上下文交付指南](../../guides/context-delivery.zh-CN.md#默认化与退役的验收) 把此比较落实为
+操作方案。文档可先交付；未来扩大默认采用范围需要明确版本的 DeepSeek 与强模型分别支持
+所声明的效果和完整成本范围。reference 已有的 Codex 范围默认仍是当前行为，不证明
+这些模型对照已通过。记录精确 model/provider/version/effort，固定 task、source、host、
+tools、反馈、evaluator、预算与停止条件。除原生任务成果、约束遗漏、错误动作和
+一次性恢复外，计入实际最终 input/output、cached/uncached tokens、请求、详情／恢复
+补读、墙钟／IO／搭建成本与人工注意力。未知成本不记零，保留重复波动、失败与负例。
+历史最佳优化保持原生排名，终态保留事实另列。仅 Codex adapter 不资格化 DeepSeek 宿主。
+
+顺序留在 C1/C2/C9：解释 → 双模型比较 → 受支持 profile 的可回退采用／发布 → 范围化
+默认 → 点名旧路径退役。结果混合或退步时保留 opt-in 或明确限制。退役须核实际 caller
+替换、历史解码／readback、支持版本与回退覆盖；完整快照、摘要校验、权限／身份／停止
+和恢复继续保留。不长期保留两个同义决策 owner，也不因新路径存在就删除仍受支持的
+reader。这是资格方案，不授予新实验权限，不宣称已交付收益，也不阻塞其他独立获授权工作。
+
 [打包来源对照](ledger/controller-executor-unified-contract-v0/2026-10-29-packaged-source-comparison.zh-CN.md)
 固定 mainline quota 与 C1 候选版本，经真实 File/SQLite CLI 验证交付、文件差分、
 capture 拒绝/恢复及一次结算。本负载来源保真改善，冷态和观察器累计输出字节增加。

docs/architecture/rfcs/loopx-overall-roadmap-v0.md

@@ -218,6 +218,19 @@ larger cold/output bytes and an open standalone numeric hash boundary. Preserve
 that counterevidence and the original outcome/full-cost gate; a working saved-file
 delta or once-only receipt does not establish long-horizon benefit.
 
+The [context-delivery guide](../../guides/context-delivery.md) explains current
+behavior and a minimum two-model comparison. Deliver documentation first;
+within C1/C2/C9, qualify a declared DeepSeek model and a declared strong model
+against the original quota path under matched conditions and complete costs.
+Then qualify reversible adoption and release of a supported profile before a
+broader default recommendation. The reference's existing Codex-scoped default
+remains current behavior, not proof of model benefit. Mixed or regressed model results retain scoped opt-in
+or explicit limitations. Retire only named replaced producers/consumers after
+actual migration, historical-reader compatibility and rollback evidence; keep
+full snapshots, integrity, authority, identity, stops and recovery. A guide,
+Codex-only adapter or shorter output does not pass the model/default gate.
+This sequence neither blocks independent authorized work nor starts experiments.
+
 Use that RFC’s C1–C9 task/deletion map within the existing work streams: first
 qualify unified single-session inputs, then role binding and shared lifecycle,
 replan/result authoring, executor exchange, benchmark reuse, packaged App

docs/architecture/rfcs/loopx-overall-roadmap-v0.zh-CN.md

@@ -167,6 +167,15 @@ C1 的[消费链切换表](controller-executor-unified-contract-v0.zh-CN.md#c1-
 以及尚开放的独立数值 hash 边界。保留这些反证和原成果/完整成本门；文件差分或一次
 结算回执可用，不证明长程收益。
 
+[上下文交付指南](../../guides/context-delivery.zh-CN.md) 解释当前行为和最小双模型对照。
+文档先交付；在 C1/C2/C9 内，用明确版本的 DeepSeek 与强模型，分别对照原 quota 路径，
+固定可比条件并计入完整成本。随后验收受支持 profile 的可回退采用与发布，再决定默认
+范围扩展建议；reference 已有的 Codex 范围默认仍是当前行为，不证明模型收益。
+结果混合或某模型退步时，保留范围化 opt-in 或明确限制。退役须点名已替换的
+producer/consumer，以实际迁移、历史 reader 兼容和回退证据为依据；保留完整快照、
+完整性、权限、身份、停止与恢复。指南、仅 Codex adapter 或更短输出不通过模型／默认
+门。此顺序不阻塞独立获授权工作，也不启动实验。
+
 把该 RFC 的 C1–C9 任务/删除表放在既有工作流内：先验收统一单会话输入，再做角色绑定
 与共享生命周期、replan/结果编写、executor 交流、benchmark 复用、打包 App readback
 及退役。App heartbeat 流程和实际 benchmark 消费者分别验收；managed Codex 可以作为

docs/guides/README.md

@@ -6,6 +6,8 @@ Guides are task-oriented paths for people starting or operating LoopX.
 - [Installing LoopX](installing-loopx.md)
 - [Newcomer command path](newcomer-command-path.md)
 - [Codex App 自动续跑体验指南](codex-app-autonomous-goal-experience.md)
+- [Understand, use and evaluate context delivery](context-delivery.md)
+- [理解、使用和验收上下文交付](context-delivery.zh-CN.md)
 - [Minimal custom runtime example](minimal-custom-runtime-example.md)
 - [Minimal custom runtime example (中文)](minimal-custom-runtime-example.zh-CN.md)
 - [Custom Agent runner integration](custom-agent-runner-integration.md)