docs: multi-runtime refresh — add Runtime-OpenClaw and Runtime-Hermes pages
- New Runtime-OpenClaw.md and Runtime-Hermes.md: what each runtime is, architecture (ASCII diagram), when to pick, ClawFleet integration today, setup walkthrough, common gotchas
- Sidebar + Home: new "Runtimes" group between core wiki and LLM Providers
- Getting Started: lead line acknowledges both runtimes, Configure step splits into OpenClaw and Hermes paths, Hermes call-out points at native Dashboard and clawfleet shell
- Dashboard Guide: universal Fleet section + per-runtime differences table; Soul Archive marked OpenClaw-only with Hermes parity flagged as planned; Image management explains the two images
- CLI Reference: documents --runtime flag on create, new shell command (bash for OpenClaw, TUI for Hermes), OpenClaw-only annotations on desktop / configure / snapshot, port + data-path tables
- FAQ: regrouped into General / OpenClaw / Hermes buckets; RAM table refreshed with M4 measurements (~700 MB OpenClaw, ~140 MB Hermes per instance idle)
- Soul-Archive.md: claw-1 → openclaw-1 in CLI examples to match new naming
Hermes integration gaps in the Dashboard (Soul Archive, Skill Manager, full channel set) are framed as active direction toward parity, not stable design.