Adopt new Fizzy SDK/API commands and card filtering

[robzolkos]

Summary

• switch card list --column to server-side filtering while keeping the existing command shape
• add SDK-backed commands for activities, board accesses, webhook deliveries, user exports, and user email change flow
• update unit/e2e/contract coverage plus skill/docs/surface snapshots

Included

• fizzy card list --column <id|maybe|not-now|done> now filters server-side
• new fizzy activity list
• new fizzy board accesses --board <id>
• new fizzy webhook deliveries --board <id> <webhook_id>
• new fizzy user export-create <user_id>
• new fizzy user export-show <user_id> <export_id>
• new fizzy user email-change-request <user_id> --email <email>
• new fizzy user email-change-confirm <user_id> <token>

Testing

• go test ./...
• make surface-check
• make check

Notes

• UPDATE.md intentionally not included
• local go.mod / go.sum changes were intentionally left out pending the SDK PR state
• email change flow is unit-tested only; no e2e coverage was added because it likely triggers real email/token flow

---

Summary by cubic

Adopted the updated Fizzy SDK and added SDK-backed commands for activities, board accesses, webhook deliveries, and user data/email flows. Moved card column filtering to the server for faster, accurate results without changing CLI syntax.

• New Features

  • fizzy activity list [--board ID] [--creator ID] [--page|--all]
  • fizzy board accesses --board ID [--page]
  • fizzy webhook deliveries --board ID WEBHOOK_ID [--page|--all]
  • fizzy user export-create USER_ID and fizzy user export-show USER_ID EXPORT_ID
  • fizzy user email-change-request USER_ID --email EMAIL and fizzy user email-change-confirm USER_ID TOKEN
  • Docs and unit/e2e/contract tests updated; README “Next Steps” expanded

• Dependencies

  • Bumped github.com/basecamp/fizzy-sdk/go to v0.1.3
  • Bumped github.com/zalando/go-keyring to v0.2.8

^{Written for commit 01cf72e. Summary will update on new commits.}

[github-actions]

⚠️ Potential breaking changes detected:

• The 'status' flag in 'card list' command is marked as deprecated in favor of the new 'indexed-by' flag. Scripts using this flag may need updates.
• The pseudo column alias 'not_now' replaced the pseudo column alias 'maybe', requiring script updates for consistency with the new naming convention.
• The error message for combining '--indexed-by' with an unsupported column filter in the 'card list' command was changed, potentially affecting scripts relying on specific error output.

Review carefully before merging. Consider a major version bump.