feat(msteams): add thread copilot approvals

[sudie-codes]

Summary

• add Teams channel thread retrieval via message action thread-list
• add msteams_thread_queue_action for approval-gated thread side effects
• add DM-only approval handling for summary posting, polls, pinning, and artifact uploads

Notes

• This is PR 3 of 3 and is stacked on codex/m365-outlook-triage.
• The thread target is explicit: teamId, channelId, and rootMessageId.
• Persistent thread side effects require approval; plain in-thread summaries do not.

Testing

• pnpm test extensions/msteams/src/graph-thread.test.ts extensions/msteams/src/channel.actions.test.ts extensions/msteams/src/monitor-handler.adaptive-card.test.ts extensions/msteams/src/thread-send.test.ts extensions/msteams/src/thread-approval.test.ts
• pnpm test extensions/msteams/src/channel.actions.test.ts
• pnpm exec oxlint extensions/msteams/src/actions.ts extensions/msteams/src/channel.runtime.ts extensions/msteams/src/channel.ts extensions/msteams/src/graph-thread.ts extensions/msteams/src/graph-thread.test.ts extensions/msteams/src/plugin-full.ts extensions/msteams/src/thread-targeting.ts extensions/msteams/src/thread-send.ts extensions/msteams/src/thread-send.test.ts extensions/msteams/src/thread-approval.ts extensions/msteams/src/thread-approval.test.ts extensions/msteams/src/channel.actions.test.ts

Known Baseline Failure

• pnpm exec tsc --noEmit -p extensions/msteams/tsconfig.json currently fails on pre-existing openclaw/plugin-sdk/* and runtime-api declaration drift in the extension package, outside the thread-copilot delta.