refactor(zwave): extract node registry and projections

[AlCalzone]

Extracts node storage, projection, and socket emission from ZwaveClient.

• Separates registry ownership, serialized node/value projection, and deferred room-aware socket events.
• Keeps physical, virtual, fake, persisted, MQTT, and Home Assistant behavior compatible.
• Review focus: node identity across restart, event ordering, deferred stale emissions, and exact payload shape/arity.

Part of #4722. Stacked on #4734.

[coveralls]

Coverage Report for CI Build 29577590413

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No base build found for commit 77c5432 on alcalzone-backend-refactor-driver-lifecycle.
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Coverage: 63.545%

Details

• Patch coverage: 197 uncovered changes across 2 files (742 of 939 lines covered, 79.02%).

Uncovered Changes

File	Changed	Covered	%
api/lib/ZwaveClient.ts	172	63	36.63%
api/lib/zwave/NodeRegistry.ts	618	530	85.76%
Total (5 files)	939	742	79.02%

Coverage Regressions

Requires a base build to compare against. How to fix this →

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Coverage Stats

Relevant Lines:	8452
Covered Lines:	5608
Line Coverage:	66.35%
Relevant Branches:	5121
Covered Branches:	3017
Branch Coverage:	58.91%
Branches in Coverage %:	Yes
Coverage Strength:	37.11 hits per line

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💛 - Coveralls