Rich search output: content + provenance + metadata in one call

[marklubin]

Source

From SYNIX_REFLECTION_AND_BACKLOG.md — P1 #7.

Problem

Some workflows need full content + provenance + metadata in one response shape. Currently, powering a basic UX requires multiple artifact lookups after a search call.

Recommendation

Add optional rich output to search:

synix search "query" --json --include content,metadata,provenance

Returns each result with the full artifact content, metadata dict, and provenance chain — all in one response.

Acceptance Criteria

• One command/API call can power basic UX without multiple artifact lookups
• --json flag outputs machine-readable results
• --include controls which fields are included (content, metadata, provenance)