feat(tool): add recursive flag to section content retrieval

- Introduce `recursive` boolean argument (default true) to the getSectionContent tool schema.
- Update descriptions to clarify that recursive fetching occurs only when `recursive=true`.
- Pass the `recursive` parameter from the CLI wrapper to the core tool function.
- Modify the content fetching logic to traverse child sections only when `recursive` is enabled.

.opencode/tools/ask262-get-section-content.ts

@@ -10,7 +10,7 @@ import { createGetSectionContentTool } from "../../src/agent-tools";
 export default tool({
   description:
     "Retrieves all text chunks from a specific ECMAScript specification section by section ID. " +
-    "Supports recursive fetching - if a section has children, it will fetch all descendants. " +
+    "Supports recursive fetching - if recursive=true and the section has children, it will fetch all descendants. " +
     "Use this to get complete spec text when you know the section ID (e.g., 'sec-if-statement').",
   args: {
     sectionId: tool.schema
@@ -18,9 +18,17 @@ export default tool({
       .describe(
         "The section ID (e.g., 'sec-if-statement', 'sec-array-prototype-map') to fetch content for",
       ),
+    recursive: tool.schema
+      .boolean()
+      .default(true)
+      .describe(
+        "If true, recursively fetches content from all child sections and descendants. " +
+          "If false, only returns content from the specified section itself. " +
+          "Use false when you only need the specific section's content without subsections.",
+      ),
   },
   async execute(args, context) {
-    const { sectionId } = args;
+    const { sectionId, recursive } = args;
     const { worktree } = context;
 
     // Connect to LanceDB
@@ -30,7 +38,7 @@ export default tool({
 
     // Create and execute tool
     const contentTool = createGetSectionContentTool(table);
-    const result = await contentTool.func({ sectionId });
+    const result = await contentTool.func({ sectionId, recursive });
 
     return result;
   },