Compact quota scheduler hints

[huangruiteng]

Summary

• compact the default quota should-run.scheduler_hint by moving local scheduler / Codex CLI / Claude loop details out of the hot path
• add --include-scheduler-detail for explicit cold-path detail when a host/runtime needs the full policy packet
• update local scheduler rendering and smoke coverage to consume the compact unchanged_poll summary while preserving reset token / RRULE semantics

Validation

• python3 examples/quota-scheduler-hint-compaction-smoke.py
• python3 examples/quota-scheduler-policy-smoke.py
• python3 examples/quota-plan-smoke.py
• python3 examples/codex-cli-local-scheduler-tick-smoke.py
• python3 examples/quota-agent-scoped-user-gate-smoke.py
• python3 examples/heartbeat-quota-flow-smoke.py
• PYTHONPATH=. python3 -m loopx.cli ... quota should-run compact/detail probes
• PYTHONPATH=. python3 -m loopx.cli --format json check --scan-path ...
• git diff --check

[huangruiteng]

Self-review complete. I do not see a blocking issue in this PR.

What I checked:

• Default scheduler_hint keeps the hot-path reset semantics (codex_app.recommended_rrule, reset_policy.reset_token, initial RRULE) while moving local scheduler / Codex CLI / Claude loop policy detail behind explicit --include-scheduler-detail.
• codex-cli-local-scheduler-tick now reads the compact codex_app + unchanged_poll fields while remaining compatible with older local_scheduler fixtures.
• Public dashboard cadence contract now names scheduler_hint.unchanged_poll as the hot-path field and points full local scheduler detail at the opt-in cold path.

Validation run locally:

• python3 examples/quota-scheduler-hint-compaction-smoke.py
• python3 examples/quota-scheduler-policy-smoke.py
• python3 examples/quota-plan-smoke.py
• python3 examples/codex-cli-local-scheduler-tick-smoke.py
• python3 examples/quota-agent-scoped-user-gate-smoke.py
• python3 examples/heartbeat-quota-flow-smoke.py
• PYTHONPATH=. python3 -m loopx.cli ... quota should-run compact/detail probes
• PYTHONPATH=. python3 -m loopx.cli --format json check --scan-path ...
• git diff --check

Scope note: this fixes the scheduler/reset-policy hot-path payload. Other large quota projection fields remain separate follow-up work.