Fix schema-guided tool parameter coercion (#1143)

* Fix schema-guided tool parameter coercion

* Fix CI checks for coercion regression tests

* Finish panic-scan annotations

* Avoid redundant worker param preparation

* Keep panic-scan annotations rustfmt-stable

* Handle nullable WASM schema review feedback

* Address param coercion review notes

src/tools/builder/core.rs

@@ -43,8 +43,8 @@ use crate::error::ToolError as AgentToolError;
 use crate::llm::{
     ChatMessage, LlmProvider, Reasoning, ReasoningContext, RespondResult, ToolDefinition,
 };
-use crate::tools::ToolRegistry;
 use crate::tools::tool::{ApprovalRequirement, Tool, ToolError, ToolOutput};
+use crate::tools::{ToolRegistry, prepare_tool_params};
 
 /// Requirement specification for building software.
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -776,10 +776,11 @@ Create alongside the .wasm file to grant capabilities:
             self.tools.get(tool_name).await.ok_or_else(|| {
                 ToolError::ExecutionFailed(format!("Tool not found: {}", tool_name))
             })?;
+        let normalized_params = prepare_tool_params(tool.as_ref(), params);
 
         // Execute with a dummy context (build tools don't need job context)
         let ctx = JobContext::default();
-        tool.execute(params.clone(), &ctx).await
+        tool.execute(normalized_params, &ctx).await
     }
 
     /// Find the build artifact based on project type.