feat: CLI list commands default to summary JSON/YAML output

[Vukotije]

Closes #3644

Summary

• JSON/YAML output for list commands now renders summary fields only, matching what text mode shows
• Added --full flag to opt in to the previous full API response output
• Applied to: canvases list, events list, events list-executions, index integrations, index components, index triggers

CLI Output

Summary

Full

Screen.Recording.2026-04-07.173533.mp4

Test plan

• canvases list -o json shows only id/name/createdAt
• canvases list -o json --full shows full canvas with spec
• events list -o json shows summary fields
• events list-executions -o json shows summary fields
• index integrations/components/triggers -o json shows name/label/description
• All --full variants match previous output
• Text output unchanged
• make lint && make check.build.app passes

[superplanehq-integration]

👋 Commands for maintainers:

• /sp start - Start an ephemeral machine (takes ~30s)
• /sp stop - Stop a running machine (auto-executed on pr close)

[forestileao]

@Vukotije can you add tests for these?

[Vukotije]

@forestileao added tests.