fix: default process tool action to 'start' when only command is provided

[avoidwork]

Commit: fix: default process tool action to 'start' when only command is provided

Changed files: src/tools/process.js

Description

The process tool's Zod schema required an explicit action field, but in practice the agent almost always sends only command — which implies start. This caused schema validation errors whenever the agent omitted the action. Added .default("start") to the action field so that providing only a command works as expected.

Type of Change

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactor (no functional changes)
• Performance improvement
• CI / build / tooling

Testing

All 1192 tests pass. The change is a single .default("start") addition to the Zod schema — no logic change, just a more permissive input.

Coverage

• Line coverage maintained

Checklist

• npm run lint passes
• Tests pass with maintained line coverage
• No forbidden patterns used
• Conventional Commit style applied