v3.5 - Public Memory Sidecar Release

Public release for the Memory Sidecar v3.5 line.

Highlights:

• Multi-agent public sidecar runtime
• Bilingual installer output (zh / en)
• Install modes 1 / 2 / 3 with fallback guidance
• Embedding model selection preserved
• Clear boundary between the generic runtime and optional Hermes host scripts
• Knowledge-and-Memory-Management integration guidance

See the release docs for the full changelog and installation notes.