feat: merge 2nd round from all rcc/* sessions

- api: tool_use parsing, message_delta, request_id tracking, retry logic
- tools: extended tool suite (WebSearch, WebFetch, Agent, etc.)
- cli: live streamed conversations, session restore, compact commands
- runtime: config loading, system prompt builder, token usage, compaction

rust/crates/commands/Cargo.toml

@@ -7,3 +7,6 @@ publish.workspace = true
 
 [lints]
 workspace = true
+
+[dependencies]
+runtime = { path = "../runtime" }