[gibbsie]

Problem

postfab._resolve_live_statuses passed the job row's display name (e.g. 'Arbiter Agent', 'Catering & Fuel Sequencing Agent') as the name filter value to ListRegistryRecords. The AgentCore Registry API rejects names containing spaces or special characters with ValidationException: Invalid value for filter name, so every live-status read failed and the stale write-once snapshot won by default.

Fix

Three-path resolution order (most-to-least precise):

1. registryRecordId (new field on the job row) → GetRegistryRecord — one call, exact match.
2. registryName (new field) → ListRegistryRecords using the stamped sanitised name the fabricator created the record with.
3. Fallback for pre-fix rows: sanitise the display name with sanitize_registry_name().lower() (the same function the fabricator uses to derive record names) and list with filters.

The raw display name is never passed to the name filter.

Changes

arbiter/fabricator/index.py

• _RegistrationRunState gains agent_record_info: dict[str, tuple[str, str]] mapping agent_id → (record_id, registry_name).
• store_agent_config_registry stashes the record coordinates on both create and reuse paths.
• _write_fabrication_status accepts registry_record_id and registry_name optional params, writing them to DynamoDB when present.
• process_event's COMPLETED write threads the record info from the run state.

service/agent_intake_single/tools/postfab.py

• _resolve_registry_status takes registry_record_id and registry_name params and follows the three-path resolution.
• _resolve_live_statuses reads the new fields from each job item and passes them through.

Tests (test_postfab_live_registry.py)

• 7 new test classes: TestResolveByRegistryRecordId, TestResolveByRegistryName, TestFallbackSanitiseDisplayName, TestRecordIdFallbackToName.
• Existing _stub_list calls updated to expect lowercased names matching the new fallback convention.
• All fixtures use botocore Stubber + ParamValidator — no mocks that could drift from the API shape.

Testing

# service (474 passed)
cd service/agent_intake_single && PYTHONPATH=. pytest tests/ -v --tb=short

# arbiter fabricator (individual files pass; cross-file failures are pre-existing isolation issues)
cd arbiter/fabricator && PYTHONPATH=. pytest __tests__/test_store_agent_config_registry_properties.py -v --tb=short

Live verification

by_name("Arbiter Agent") = 'APPROVED'     # sanitised to 'arbiter-agent', matched
by_id("MshBnaCcFECO")    = 'APPROVED'     # exact GetRegistryRecord