Fix admin mark_failed and add_note claim actions

[GsCommand]

Motivation

• Fix occurrences of ADMIN_CLAIM_ACTION_FAILED when invoking admin actions on an approved claim by aligning frontend payload keys and backend handling for mark_failed and add_note.
• Ensure mark_failed and add_note behave deterministically with required inputs and produce appropriate events and transitions without weakening the status machine.
• Provide safer, more informative server logging and client error rendering to aid debugging in non-production without leaking secrets.

Description

• Update api/admin/claim-action.js to require reason for mark_failed and notes for add_note, allow mark_failed from any non-live status, update claim_requests (status = 'failed', last_error, last_error_at) for failures, and insert matching claim.failed event and a claim_status_transitions record with metadata.
• Change add_note to preserve claim status, append/update admin_notes, and insert a claim.note_added event (message + json) without inserting a status transition.
• Improve error handling by logging { message, code, action, claimId, currentStatus } on unexpected failures and include a debug object in the JSON response only when NODE_ENV !== 'production'.
• Align public/admin/claims.html to send reason for mark_failed and notes for add_note, and render API errors inline as Action failed: <status> — <error> with optional Details: <debug.message> when present.
• Add and expand tests in tests/api-admin-claims.test.js to cover mark_failed success/failure semantics, event and transition writes, add_note behavior, and frontend payload key expectations.

Testing

• Ran the full test suite with npm test and all tests passed (77 tests passed after changes).
• Ran example checks with cd examples/webhook-auto-verify && npm run check and the check succeeded.
• New/updated unit tests specifically covering mark_failed and add_note behaviors passed in the automated test run.

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Codex Task

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Project	Deployment	Actions	Updated (UTC)
commandlayer-commandlayer-org	Ready	Preview, Comment	May 23, 2026 8:37pm
commandlayer-org	Ready	Preview, Comment	May 23, 2026 8:37pm
commandlayer-org111	Ready	Preview, Comment	May 23, 2026 8:37pm