feat(openclaw): enable observation feed for OpenClaw agent sessions

Three fixes to make OpenClaw agent observations work end-to-end:

1. Session init in before_agent_start — the worker's privacy check
   requires a stored user prompt; without calling /api/sessions/init,
   all observations were skipped as "private"

2. Race condition fix in agent_end — await summarize before sending
   complete, preventing session deletion before in-flight observation
   POSTs arrive

3. OAuth token pass-through in buildIsolatedEnv — spawned Claude CLI
   processes now receive CLAUDE_CODE_OAUTH_TOKEN from the worker's
   env when no explicit API key is configured

Also adds agent-specific emoji mapping and dynamic project naming
for the Telegram observation feed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

openclaw/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "@claude-mem/openclaw-plugin",
+  "name": "@openclaw/claude-mem",
   "version": "1.0.0",
   "private": true,
   "type": "module",
@@ -11,5 +11,10 @@
   "devDependencies": {
     "@types/node": "^25.2.1",
     "typescript": "^5.3.0"
+  },
+  "openclaw": {
+    "extensions": [
+      "./dist/index.js"
+    ]
   }
 }