Tighten Java file structure limit

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: wenytang-ms

package.json

@@ -52,7 +52,7 @@
       {
         "name": "lsp_java_getFileStructure",
         "toolReferenceName": "javaFileStructure",
-        "modelDescription": "Get a known Java file's outline: classes, interfaces, methods, fields, symbol kinds, and read_file ranges, to pick a precise source range instead of reading the whole file.\n\nUse when the user gave a Java file path or lsp_java_findSymbol returned a file and broader file context is needed; do not guess paths. Results include a top-level file plus per-symbol startLine, endLine, and readFileRange ({ offset, limit }); call read_file with filePath=file and the selected symbol's readFileRange. Use limit to cap returned outline items (default 40, max 80). Not for workspace-wide search\u2014use lsp_java_findSymbol for that.",
+        "modelDescription": "Get a known Java file's outline: classes, interfaces, methods, fields, symbol kinds, and read_file ranges, to pick a precise source range instead of reading the whole file.\n\nUse when the user gave a Java file path or lsp_java_findSymbol returned a file and broader file context is needed; do not guess paths. Results include a top-level file plus per-symbol startLine, endLine, and readFileRange ({ offset, limit }); call read_file with filePath=file and the selected symbol's readFileRange. Use limit to cap returned outline items (default 20, max 60). Not for workspace-wide search\u2014use lsp_java_findSymbol for that.",
         "displayName": "Java: Get File Structure",
         "userDescription": "Get a Java file outline with classes, methods, fields, and line ranges.",
         "tags": [
@@ -73,7 +73,7 @@
             },
             "limit": {
               "type": "number",
-              "description": "Maximum outline items to return (default: 40, max: 80). Use a smaller value when only top-level context is needed."
+              "description": "Maximum outline items to return (default: 20, max: 60). Use a smaller value when only top-level context is needed."
             }
           },
           "required": [

resources/skills/java-lsp-tools/SKILL.md

@@ -18,7 +18,7 @@ Search for Java symbol definitions (classes, methods, fields) by name across the
 
 ### `lsp_java_getFileStructure`
 Get hierarchical outline of a Java file (classes, methods, fields) with line ranges.
-- Input: `{ uri, limit? }` — workspace-relative path plus max outline items. Prefer `file` from `lsp_java_findSymbol`; limit defaults to 40, max 80. Must be a known path from prior tool results or user input — do not guess
+- Input: `{ uri, limit? }` — workspace-relative path plus max outline items. Prefer `file` from `lsp_java_findSymbol`; limit defaults to 20, max 60. Must be a known path from prior tool results or user input — do not guess
 - Output: `{ file, symbols: [{ name, kind, startLine, endLine, readFileRange, range, detail?, children? }], truncated? }`; call `read_file` with `filePath=file` and the selected symbol's `readFileRange`
 - **Use before** `read_file` when you need to choose a precise line range in a known Java file
 

src/copilot/tools/javaContextTools.ts

@@ -28,8 +28,8 @@ import { sendInfo } from "vscode-extension-telemetry-wrapper";
 
 // Hard caps to keep tool responses within the < 200 token budget.
 const MAX_SYMBOL_DEPTH = 3;
-const MAX_SYMBOL_NODES = 80;
-const DEFAULT_FILE_STRUCTURE_SYMBOL_NODES = 40;
+const MAX_FILE_STRUCTURE_SYMBOL_NODES = 60;
+const DEFAULT_FILE_STRUCTURE_SYMBOL_NODES = 20;
 const MAX_CALL_RESULTS = 50;
 const MAX_TYPE_RESULTS = 50;
 const MAX_IMPORTS = 50;
@@ -183,7 +183,7 @@ interface FileStructureInput {
 const fileStructureTool: vscode.LanguageModelTool<FileStructureInput> = {
     async invoke(options, _token) {
         const startTime = Date.now();
-        const limit = Math.min(Math.max(options.input.limit || DEFAULT_FILE_STRUCTURE_SYMBOL_NODES, 1), MAX_SYMBOL_NODES);
+        const limit = Math.min(Math.max(options.input.limit || DEFAULT_FILE_STRUCTURE_SYMBOL_NODES, 1), MAX_FILE_STRUCTURE_SYMBOL_NODES);
         let resultCount = 0;
         let status = "success";
         let errorCode = "";