feat: Embed search parameters in --show-metadata Query section

[holmboe]

Summary

• When --show-metadata is active, each task's Metadata section now includes a Query key containing the original search parameters (tag, updated_after, etc.)
• Enables downstream tools (e.g., weav templates) to pick up search context from the data itself, eliminating the need to pass the same arguments to both phabfive and the consumer

Before:

BOARDS=dynamist-documents,developer-experience
phabfive maniphest search --updated-after 14 --tag $BOARDS \
  | weav projectloop.md.j2 --data tasks=- --keyval boards=$BOARDS

After:

phabfive --format yaml maniphest search --updated-after 14 \
  --tag dynamist-documents,developer-experience --show-metadata \
  | weav projectloop.md.j2 --data tasks=-

Example output with --show-metadata:

  Metadata:
    MatchedBoards: [...]
    MatchedPriority: false
    MatchedStatus: false
    Query:
      tag: dynamist-documents,developer-experience
      updated_after: '14'

Test plan

• Run phabfive --format yaml maniphest search --updated-after 14 --tag dynamist-documents --show-metadata and verify Query appears in each task's Metadata
• Run without --show-metadata and verify output is unchanged
• Run uv run pytest — all 332 tests pass

🤖 Generated with Claude Code