hermes-memory-installer: Recording Final Cold-Layer Recovery State

Short summary

A documentation update to hermes-memory-installer formalizes the terminal state of cold-layer recovery into a structured, machine-readable JSON record. This replaces ambiguous log parsing with a deterministic state file containing phase, segment checksums, and error metadata. Developers can now poll a single file to verify recovery completion and trigger application launch programmatically.

• •Cold-layer recovery state is now written to a structured JSON file with phase, segment status, and error metadata
• •Eliminates race conditions and heuristic log parsing in favor of atomic, machine-readable state records
• •Enables programmatic pre-start validation and simpler orchestration for distributed memory tiers

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