Use the Azure runtime function inventory

[jeremydixon22]

Summary

• derive the expected Azure Function inventory from the packaged functions.metadata
• verify the exact deployed inventory through the authenticated runtime API instead of the eventually consistent ARM listing
• retry key availability during host startup and keep the master key isolated to the runtime administration request
• suppress verbose provider deployment diagnostics while retaining bounded retry and redacted stage evidence
• preserve deterministic success, empty-inventory, partial-inventory, cleanup, and secret-redaction tests

Why

Flex Consumption can briefly expose a partial management-plane function list while the host is indexing. The runtime inventory is the authoritative statement of what the deployed host can execute.

Verification

• deterministic Azure live-script harness
• Azure Durable package-family coherence check
• real local Functions host startup with seven functions
• complete disposable managed-Azure qualification: exact seven-function inventory, endpoint readiness, ordinary execution, external-event wait, durable timer, live state assertions, and full resource cleanup
• pre-merge release boundary and release-mode public export/history/ownership/credential/secret checks