Phase 4: Add CLI composition flows (corvus agent build/run/new)

[yacosta738]

Parent epic: DALLAY-249
Source of truth: tmp/PRD-Capability-Based-Architecture-for-Composable-AI-Agents.md

Phase 4: Add CLI composition flows (corvus agent build/run/new)

Objective

Expose manifest-driven agent composition through first-class CLI commands.

Scope

• add corvus agent build --manifest ...
• add corvus agent run --manifest ...
• add corvus agent new --template ... --name ...
• connect CLI flows to manifest validation and AgentComposer
• provide useful operator-facing errors for invalid manifests or missing capabilities

Acceptance Criteria

• users can validate, build, and run an agent from a manifest through the CLI
• template-based scaffolding works for initial agent creation
• CLI output is clear enough to diagnose missing capability or platform issues
• targeted command-level tests cover the main flows where practical

Notes

This phase turns the architecture into a usable developer workflow.

[linear]

DALLAY-260