improvement(latex): guard lookup tool responses against upstream errors

Author: waleedlatif1

apps/sim/tools/latex/get_package.ts

@@ -27,6 +27,7 @@ export const latexGetPackageTool: ToolConfig<LatexGetPackageParams, LatexGetPack
 
   transformResponse: async (response: Response) => {
     const data = (await response.json()) as {
+      error?: string
       package?: {
         package?: string
         installed?: boolean
@@ -42,10 +43,12 @@ export const latexGetPackageTool: ToolConfig<LatexGetPackageParams, LatexGetPack
     }
 
     const pkg = data.package
-    if (!pkg?.package) {
+    if (!response.ok || data.error || !pkg?.package) {
       return {
         success: false,
-        error: 'Package not found',
+        error:
+          data.error ||
+          (response.ok ? 'Package not found' : `LaTeX package lookup failed (${response.status})`),
         output: {
           package: {
             name: '',

apps/sim/tools/latex/list_fonts.ts

@@ -36,13 +36,22 @@ export const latexListFontsTool: ToolConfig<LatexListFontsParams, LatexListFonts
 
   transformResponse: async (response: Response, params?: LatexListFontsParams) => {
     const data = (await response.json()) as {
+      error?: string
       fonts?: Array<{
         family?: string
         name?: string
         styles?: string[]
       }>
     }
 
+    if (!response.ok || data.error) {
+      return {
+        success: false,
+        error: data.error || `LaTeX font listing failed (${response.status})`,
+        output: { fonts: [], totalMatches: 0 },
+      }
+    }
+
     const query = (params?.query ?? '').trim().toLowerCase()
     const matches = (data.fonts ?? []).filter((font) => {
       if (!query) return true

apps/sim/tools/latex/search_packages.ts

@@ -43,6 +43,7 @@ export const latexSearchPackagesTool: ToolConfig<
 
   transformResponse: async (response: Response, params?: LatexSearchPackagesParams) => {
     const data = (await response.json()) as {
+      error?: string
       packages?: Array<{
         name?: string
         shortdesc?: string
@@ -51,6 +52,14 @@ export const latexSearchPackagesTool: ToolConfig<
       }>
     }
 
+    if (!response.ok || data.error) {
+      return {
+        success: false,
+        error: data.error || `LaTeX package search failed (${response.status})`,
+        output: { packages: [], totalMatches: 0 },
+      }
+    }
+
     const query = (params?.query ?? '').trim().toLowerCase()
     if (!query) {
       return {