feat(typefully): support LinkedIn reshares

[frankdilo]

TL;DR

Agents can now create and update Typefully LinkedIn reshares/reposts through the CLI using LinkedIn post URLs or canonical URNs, including plain reshares without commentary.

Summary

• Introduce LinkedIn reshare flags for drafts:create, drafts:update, and the create/update aliases, including URL/repost aliases that map to the API linkedin_reshare_target field.
• Add payload handling for LinkedIn-only reshares so reshare targets are only attached to LinkedIn posts, reshare-only drafts default to LinkedIn, and update-only reshares preserve existing LinkedIn commentary.
• Update skill docs and changelog with the new workflow, accepted URN shapes, response field name, examples, and the refreshed last-updated date.
• Add draft command tests covering plain reshares, cross-platform commentary, alias handling, validation errors, and update-preservation behavior.

Breaking Changes

None

Validation

• node --check skills/typefully/scripts/typefully.js
• git diff --check
• npm run test:drafts
• npm test

Manual QA

• Create a LinkedIn draft with --linkedin-reshare-target <url_or_urn> -> API receives linkedin_reshare_target on the LinkedIn post.
• Update an existing LinkedIn draft with --linkedin-reshare-url <url_or_urn> -> existing commentary is preserved and the reshare target is added.

After Merge

No action required

Related Links

• Backend LinkedIn repost support