ci: use dedicated staging e2e greps

[piotr-iohk]

This PR updates the iOS staging E2E matrix to dedicated staging greps, including a transfer shard that runs @transfer_1 and @transfer_max via @transfer_staging.

Description

• Replaces the multi_address_2, pubky, and transfer_max shards with multi_address (@multi_address_staging), pubky (@pubky_staging), and transfer (@transfer_staging) so staging matches the new harness tags.
• Leaves schedule, workflow_dispatch, Slack summary, and concurrency unchanged.

Out of Scope

• .github/workflows/e2e-staging.yml: no hardware_wallet shard on iOS staging; hardware remains local on iOS.
• .github/workflows/e2e-tests.yml: local merge-gate greps stay as they are.
• Harness tag definitions live on synonymdev/bitkit-e2e-tests branch e2e/transfer-1-staging.

Design

N/A — no UI changes.

Preview

N/A

QA Notes

Manual Tests

N/A

Automated Checks

• Workflow YAML only. After this PR is open, gh workflow run e2e-staging.yml --ref e2e/transfer-1-staging -f e2e_branch=e2e/transfer-1-staging -f post_to_slack=false (after merge: the same dispatch on master) should resolve to the matching harness branch and run the three new shards.

  

[greptile-apps]

Confidence Score: 5/5

The workflow-only change appears safe to merge, with no concrete correctness, security, or repository-rule issues identified.

Summary

Updates the iOS staging E2E matrix to use dedicated staging selectors.

• Replaces the multi-address selector with @multi_address_staging.
• Replaces the Pubky selector with @pubky_staging.
• Consolidates staging transfer coverage under @transfer_staging.
• Renames the corresponding matrix shards while leaving workflow control flow unchanged.

_{Reviews (1) · Last reviewed commit: "ci: use dedicated staging e2e greps"}

[ovi-reviewer]

Verdict: ✅ Approve

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Review: diff 1 file.
Counterpart synonymdev/bitkit-android#1283: equivalent.

Findings:
N/A

Audit:
Skipped - no security surface in the diff (score 0, threshold 3).

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Reviewed by grok-4.6-xhigh via gh-pr-review-loop skill
Commands: @ovi-reviewer test · retest · audit (author or owner)