Add smart-csv-org-loader example (Integration App)

[jadiyeom]

What this PR adds or changes

Adds examples/smart-csv-org-loader: an Extend app and async orchestration that loads organization assignment changes from a flat one-row-per-worker CSV, instead of multi-row Assign Organization EIB spreadsheets. It pre-validates workers, positions, dates and duplicates with WQL, calls Staffing Change_Organization_Assignments (v42.0) in the background, and writes each row's COMPLETED or SOAP_FAULT result back to a business object shown in Batch history.

Checklist for new or changed examples

• The example lives entirely in its own folder under examples/
• node scripts/validate-examples.mjs --check passes (valid example.json, README present, index table in sync)
• The README says what the artifact is, how to use it, and what to change before deploying it (the "Before you deploy" section)
• No credentials, tenant names, or real personal data anywhere in the folder
• node scripts/audit-examples.mjs --changed passes (run with --skip-arcane; Arcane Auditor wasn't available locally)

Anything reviewers should know?

• Tested end to end in a development tenant (Oct 2026), covering valid loads, SOAP faults surfaced per row, and a 47-row file in one async launch that finished in about a minute.
• The orchestration is async (MixedFlow/MixedStart, modelled on catalog/orchestrationToolkit), because synchronous launches hit a ~24s timeout at about 15 rows.
• Organization IDs aren't pre-checked with WQL (FROM organizations returned 400 in my tenant), so Workday validates them at load.
• Not yet observed: an approval-routed change, or a successful custom organization assignment.

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