fix(delegate-task): add token counting and truncation to prevent context overflow

Fixes #1815, #1733

src/tools/delegate-task/skill-resolver.ts

@@ -5,17 +5,18 @@ import { discoverSkills } from "../../features/opencode-skill-loader"
 export async function resolveSkillContent(
   skills: string[],
   options: { gitMasterConfig?: GitMasterConfig; browserProvider?: BrowserAutomationProvider, disabledSkills?: Set<string>, directory?: string }
-): Promise<{ content: string | undefined; error: string | null }> {
+): Promise<{ content: string | undefined; contents: string[]; error: string | null }> {
   if (skills.length === 0) {
-    return { content: undefined, error: null }
+    return { content: undefined, contents: [], error: null }
   }
 
   const { resolved, notFound } = await resolveMultipleSkillsAsync(skills, options)
   if (notFound.length > 0) {
     const allSkills = await discoverSkills({ includeClaudeCodePaths: true, directory: options?.directory })
     const available = allSkills.map(s => s.name).join(", ")
-    return { content: undefined, error: `Skills not found: ${notFound.join(", ")}. Available: ${available}` }
+    return { content: undefined, contents: [], error: `Skills not found: ${notFound.join(", ")}. Available: ${available}` }
   }
 
-  return { content: Array.from(resolved.values()).join("\n\n"), error: null }
+  const contents = Array.from(resolved.values())
+  return { content: contents.join("\n\n"), contents, error: null }
 }