[DIT-12572] Support filtering by tags

[jholiga]

Overview

Adds the ability to filter the pull command response by tags — allowing users to scope text items and components by one or more tags, with support for AND/OR operators.

Supports top-level and output-specific tags configuration:

tags:
  values:
    - "tag-1"
    - "tag-2"
  operator: "AND"

Context

https://linear.app/dittowords/issue/DIT-12572/add-tags-filter-to-cli

API reference: https://developer.dittowords.com/api-reference/text-items/get-text-items

Follows similar pattern established in PR #135 (integrated filter).

Screenshots

N/A

Test Plan

Testing successfully completed via:

• Add tags filter at the top level of config.yml with one or more tag values
• Run yarn start pull and confirm only items matching the specified tags are returned
• Change operator to "AND" and confirm only items with ALL specified tags are returned
• Change operator to "OR" (or omit it) and confirm items with ANY of the specified tags are returned
• Add multiple outputs to config with different tags overrides
• If an output has tags, that output should use those tags
• If an output doesn't have tags, the top-level tags filter should be used
• If there is no tags filter in an output or top level, no tags filter should be applied (all items returned)
• Confirm tags filtering works for both text items and components
• Confirm tags filtering works for export formatters
• Run yarn test — all 232 tests pass