[bug] lore_health does not surface quest corpus coverage

[kunallanjewar]

Summary

guild lore health renders the embedder section for the lore corpus but does not show equivalent metrics for the quest corpus, even though both corpora maintain vector tables. Operators have no single-command view of total embedding health across both stores.

Affected files

• internal/lore/embedder_health_cmd.go
• internal/cli/lore_health.go

Acceptance

• lore_health output includes a quest-corpus section with the same coverage metrics (rows, vector rows, percentage, embedder state).
• Both sections render even if one corpus is empty (renders 0/0 rather than omitting).
• MCP lore_health returns the same structured output.