Refine autonomous task granularity and escalation handling

[shinpr]

Summary

• Generate fewer outcome-oriented implementation tasks while preserving required executor and sequencing boundaries.
• Route blocked decomposition and execution states through centralized orchestrator resolution.
• Preserve merged Work Plan traceability, align recipe contracts, and bump the package version to 0.9.5.

Verification

• npm test
• npm run check:skills-index
• Parsed all Codex agent TOML files successfully
• git diff --check