feat: enhance strictness of Rust compiler settings and improve code quality by treating warnings as errors

src/app/subagent/engine.rs

@@ -14,14 +14,6 @@ use crate::tool::{all_tools, tool_defs, tool_is_risky};
 use super::context::SubagentContext;
 use super::event::SubagentEvent;
 
-/// Upper bound on agent loop steps; effectively unbounded (`usize::MAX`).
-#[allow(dead_code)]
-pub const MAX_AGENT_STEPS: usize = usize::MAX;
-
-/// Maximum time a single tool call may block inside a subagent before
-/// being abandoned. Prevents a stuck tool from hanging the subagent loop.
-const SUBAGENT_TOOL_TIMEOUT_MS: u64 = 120_000;
-
 /// Maps a subagent's allowed tool names to concrete Tool trait objects and
 /// OpenAI-style tool definitions.
 ///