升级SpacetimeDB至2.6.1

统一Rust crates、CLI、容器镜像和生产provision版本
使用2.6.1 CLI重新生成Rust bindings
更新运行检查、架构运维文档和项目共享记忆

.codex/skills/spacetimedb-concepts/SKILL.md

@@ -78,7 +78,7 @@ Best practices:
 - Avoid overlapping queries that duplicate row delivery.
 - Use indexes for subscribed filters.
 
-## 2.2.0 to 2.6.0 Delta
+## 2.2.0 to 2.6.1 Delta
 
 Genarrative introduced SpacetimeDB around 2.2.0. Important changes since then:
 
@@ -88,6 +88,7 @@ Genarrative introduced SpacetimeDB around 2.2.0. Important changes since then:
 - **2.4.1**: Rust and TypeScript procedural views can declare primary keys, enabling `OnUpdate` events for subscribed views; fixed index schema from ST tables.
 - **2.5.0**: procedures are stable, C# procedural views gain primary keys, event tables allow broader layout-altering automigrations, BTreeSet storage makes row insertion deterministic and avoids accidentally quadratic bulk insert behavior, `wasm_memory_bytes` billing metric semantics changed, template version constraints unified, `publish --delete-data` config fallback fixed, CLI `call` accepts hex Identity arguments.
 - **2.6.0**: procedural-view primary keys are available across Rust, TypeScript, and C#, commitlog gains `max_segment_size` / `write_buffer_size` / `preallocate_segments`, the default write buffer increases for throughput, event-table automigrations improve, and CLI binary distribution expands.
+- **2.6.1**: procedure contexts again receive the caller `Identity` and `ConnectionId`; generated TypeScript `Option<T>` fields use optional keys; `spacetime init --template` lists available templates when no template argument is supplied.
 
 ## Debugging Checklist