feat(runtime-host): add interactive session actions

[M4n5ter]

English

Summary

• Add the v0 turn.regenerate, context.diagnostics.query, context.compact, and session.cwd.relocate Runtime Host operations with matching Client wrappers.
• Make regeneration replay the immutable source content and lineage through one durable Root Turn identity, including exact retry and startup recovery.
• Run manual context compaction as an explicit Host-owned root with durable admission, positive Run identity, query/stop/retry/recovery support, and honest backend capability preflight.
• Route workspace relocation through Runtime's revision and quiescence authority, including same-path requests, so active runs, archived Sessions, and managed child resources remain fenced.

Why

Interactive Clients need authoritative Session actions without bypassing Runtime lifecycle, recovery, or multi-Client coordination. These operations reuse the existing Root Turn and Session mutation boundaries instead of introducing a parallel execution path.

Validation

• npm run build
• npm --workspace @maka/runtime-host run test:dist — 604 passed
• Runtime and AiSdk compaction tests — 53 passed
• npm --workspace @maka/core run test:dist — 752 passed
• Focused Storage admission tests
• npm run format:check
• npm run lint
• npm run typecheck
• git diff --check

Part of #1167. Runtime Host roadmap context: #853.

中文

概要

• 新增 v0 turn.regenerate、context.diagnostics.query、context.compact 与 session.cwd.relocate Runtime Host 操作，并提供对应的 Client 封装。
• 让重新生成通过单一持久 Root Turn 身份重放不可变的源内容与 lineage，并支持精确重试和启动恢复。
• 将手动上下文压缩作为显式的 Host-owned root 执行，具备持久 admission、正向 Run 身份、查询、停止、重试、恢复与真实的 backend 能力预检。
• 让工作目录迁移统一经过 Runtime 的 revision 与 quiescence authority；即使路径未变化，也会正确约束 active run、已归档 Session 与受管 child resource。

原因

交互式 Client 需要权威的 Session 操作，同时不能绕过 Runtime 生命周期、恢复机制或多 Client 协调。这些操作复用现有 Root Turn 与 Session mutation 边界，不引入平行执行路径。

验证

• npm run build
• npm --workspace @maka/runtime-host run test:dist — 604 项通过
• Runtime 与 AiSdk compaction 测试 — 53 项通过
• npm --workspace @maka/core run test:dist — 752 项通过
• Storage admission 聚焦测试
• npm run format:check
• npm run lint
• npm run typecheck
• git diff --check

属于 #1167 的一部分；Runtime Host 路线图背景见 #853。