chore: initial scaffolding for SynthesisAgent.ClaudePlugin

Stdio MCP server registered as a Claude Code --channels source. Receives
inbound events from SynthesisAgent.OpenclawPlugin and emits
notifications/claude/channel to push them into the running Claude turn loop.
Forwards tools/call requests back to OpenClaw for execution.

Capability declaration uses experimental.claude/channel — required nesting
discovered 2026-05-14 against the official Anthropic discord plugin source.

tsconfig.json

@@ -0,0 +1,14 @@
+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "module": "ESNext",
+    "moduleResolution": "Bundler",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "resolveJsonModule": true,
+    "allowImportingTsExtensions": true,
+    "noEmit": true,
+    "types": ["bun-types"]
+  }
+}