fix(plugin): wakeup message says 'continue in same session', not 'only reply WAKEUP_OK'

E2e showed the old wakeup text trapped agents in an ack-only loop:

> "You have due slots. Follow the `hf-wakeup` workflow of skill
>  `hf-hangman-lab` to proceed. Only reply `WAKEUP_OK` in this session."

The two clauses contradicted each other — "follow the workflow" vs
"only reply WAKEUP_OK". MiniMax-M2.5 prioritised the literal "only"
and never proceeded past the ack; the scheduler then re-woke every 30s
because the slot stayed `not_started`, and the agent kept re-acking
forever (verified: 3 consecutive WAKEUP_OK-only replies across slot 7).

Rewrites the wakeup message to be explicit:
  - first line MUST be `WAKEUP_OK` (the ack token the plugin looks for)
  - then continue IN THE SAME session: drive calendar_status → task
    fetch → sub-workflow → calendar_complete/abort
  - flags the loop trap so the agent knows what to avoid

Bumps version 0.3.3 → 0.3.4.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

plugin/package.json

@@ -1,6 +1,6 @@
 {
   "name": "harbor-forge-plugin",
-  "version": "0.3.3",
+  "version": "0.3.4",
   "description": "OpenClaw plugin for HarborForge monitor bridge and CLI integration",
   "type": "module",
   "main": "dist/index.js",