feat(agents): wire Claude Opus 4.7 support into Sisyphus agent

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/agents/sisyphus/index.ts

@@ -3,11 +3,14 @@
  *
  * This directory contains model-specific prompt variants:
  * - default.ts: Base implementation for Claude and general models
+ * - claude-opus-4-7.ts: Native Claude Opus 4.7 prompt with literal-instruction tuning
  * - gemini.ts: Corrective overlays for Gemini's aggressive tendencies
  * - gpt-5-4.ts: Native GPT-5.4 prompt with block-structured guidance
+ * - gpt-5-5.ts: Native GPT-5.5 prompt with Codex-style sections
  */
 
 export { buildDefaultSisyphusPrompt, buildTaskManagementSection } from "./default";
+export { buildClaudeOpus47SisyphusPrompt } from "./claude-opus-4-7";
 export {
   buildGeminiToolMandate,
   buildGeminiDelegationOverride,