[Tracking Issue] 202609 FOC Release

# Purpose

This issue tracks the work across the FOC stack for the "202609 Release", at least as it pertains to fully delivering contract changes. This includes the the work needed to unblock contract deployments and the resulting changes to take advantage of contract deployments (e.g., Synapse changes).

# Timeline

* 2026-09-21: Contract code freeze
* 2026-09-22: Announce PDP and FWSS calibration upgrade
* 2026-09-24: Execute PDP calibration upgrade
* 026-09-28: foc-devnet verification
* 2026-09-28 Curio release
* 2026-09-28: Curio rollout to calibration PDP SPs
* 2026-09-28: Synapse RC release (happens automatically with each PR)
* 2026-09-29: filecoin-pin RC release (happens automatically with each PR)
* 2026-09-29: Execute FWSS calibration upgrade
* 2026-09-30: Announce PDP and FWSS mainnet upgrade
* 2026-09-30: Curio rollout to mainnet PDP SPs
* 2026-10-01: Execute PDP mainnet upgrade
* 2026-10-01: Execute FWSS mainnet upgrade
* 2026-10-01: Synapse release
* 2026-10-01: filecoin-pin release

# Steps
## PDP Calibration Deployment
- [ ] Synapse prelease as tracked in [TBD]
- [ ] Curio release
- [TBD]
- [ ] Curio rollout to calibration PDP SPs:
- [TBD]
- [ ] PDP Calibration upgrade as tracked in [TBD]

## FWSS Calibration Deployment
(Assumes the completed PDP calibration deployment above)

- [ ] Anything listed in [TBD MILESTONE]
- [ ] Complete the "essential-to-verify-in-calibration" items from [TBD]
- [ ] Synapse "RC" (happens automatically)
- [ ] filecoin-pin "RC"
- [ ] FWSS Calibration upgrade as tracked in [TBD]

## PDP and FWSS Mainnet Deployment

- [ ] Synapse changes
- [ ] Curio mainnet PDP SP rollout
- [ ] Dealbot production deployment
- [ ] PDP Mainnet upgrade as tracked in [TBD]
- [ ] FWSS Mainnet upgrade as tracked in [TBD]
- [ ] Synapse release [TBD]
- [ ] filecoin-pin release [TBD]

## Can happen anytime
- [ ] TBD

Start with the checklist sections for PDP Calibration, FWSS Calibration, and PDP and FWSS Mainnet Deployment. Review the referenced TBD milestones and tracked upgrades first, since the issue does not provide their links. Done means the listed releases, rollouts, upgrades, and verification items are completed and the TBD entries are resolved.

Written by the indexing model from the issue text.