Add runtime tool lifecycle abilities

[chubes4]

Summary

• Adds canonical generic runtime-tool lifecycle abilities for listing pending requests, reading request status, submitting results, and timeout/cancel terminal transitions.
• Resolves durable request stores and optional resume continuations through generic filters, without Codebox/Homeboy-specific coupling.
• Adds focused smoke coverage for ability registration, schemas, and lifecycle transitions.

Testing

• php tests/runtime-tool-lifecycle-abilities-smoke.php
• php tests/tool-runtime-smoke.php
• composer smoke
• composer phpstan

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (gpt-5.5)
• Used for: Drafted and tested the runtime-tool lifecycle ability registration and smoke coverage; Chris remains responsible for review and acceptance.