fix(hooks): notify on permission prompts

[lihailong00]

Summary

• emit the documented Notification hook with type permission_prompt when manual approval is required
• avoid notifications for yolo, AFK, and session-cached automatic approvals
• share hook configuration with subagent approval facades

Reproduction and verification

The regression test exercises the sole manual approval boundary and asserts exactly one documented notification payload.

• uv run pytest tests/core/test_approval_telemetry.py tests/core/test_approval_runtime.py -q — 21 passed
• targeted Ruff and Pyright — passed

Closes #2337

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.