feat(contributor): add owner field to Create and Update Contributor commands

[juan-malbeclabs]

Summary of Changes

• The owner parameter is added to the contributor creation instruction.
• The SDK and CLI are updated accordingly.
• Validation checks are added to ensure that both the device and the link belong to the same contributor.

Testing Verification

• Show evidence of testing the change

[Copilot]

Pull Request Overview

This PR adds an owner field to both Create and Update Contributor commands, enabling explicit ownership assignment instead of defaulting to the payer. The change affects the entire stack from smart contract processors to CLI interfaces.

Key changes:

• Add owner field to ContributorCreateArgs and ContributorUpdateArgs structs
• Update validation logic to ensure devices and links belong to the same contributor owner
• Modify CLI commands to accept owner parameter

Reviewed Changes

Copilot reviewed 16 out of 17 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
smartcontract/programs/doublezero-serviceability/src/processors/contributor/create.rs	Adds owner field to creation args and uses it instead of payer key
smartcontract/programs/doublezero-serviceability/src/processors/contributor/update.rs	Adds owner field to update args with optional update capability
smartcontract/programs/doublezero-serviceability/src/processors/link/create.rs	Adds validation to ensure link devices belong to same contributor owner
smartcontract/programs/doublezero-serviceability/src/processors/device/create.rs	Refactors validation to use assertions instead of if statements
smartcontract/sdk/rs/src/commands/contributor/create.rs	Updates SDK command to include owner field
smartcontract/sdk/rs/src/commands/contributor/update.rs	Updates SDK command to include optional owner field
smartcontract/cli/src/contributor/create.rs	Adds owner CLI parameter for creation
smartcontract/cli/src/contributor/update.rs	Adds owner CLI parameter for updates

Comments suppressed due to low confidence (1)

smartcontract/programs/doublezero-serviceability/src/processors/link/create.rs:84

• [nitpick] Unnecessary blank line removal. This change doesn't add functional value and may reduce code readability by removing logical separation.

    if !globalstate.device_allowlist.contains(payer_account.key) {