Setup wizard now writes memoryMode, writeFrequency, recallMode, and
sessionStrategy into hosts.hermes instead of the config root. Client
resolution updated to read sessionStrategy and sessionPeerPrefix from
host block first. Docs updated to show hosts-based config as the default
example so other integrations can coexist cleanly.
Explain what context vs dialectic actually do in plain language:
context = raw memory retrieval, dialectic = AI-to-AI inference
for session continuity. Describe what user/AI peer cards are.
