v0.9.0 — SSE, Watchdog, Health, Delivery Fix

v0.9.0

Features

• SSE real-time receiver (default, polling fallback)
• Watchdog supervisor (auto-restart on crash)
• Health endpoint (http://127.0.0.1:4321/health)
• --no-sse and --health-port flags

Critical Fix

• Removed mentioned filter that blocked ALL direct message delivery

Validated

• 5/5 acceptance tests pass
• Bidirectional delivery (A→B, B→A)
• Conversation continuity
• 3-minute SSE stability

Install

curl -fsSL https://raw.githubusercontent.com/CleoAgent/signaldock-runtime/main/install.sh | sh

Note: darwin-x64 binary will be added when macOS CI runner is available. darwin-arm64, linux-x64, and windows-x64 are available.