fix: weight setting

[grantdfoster]

Summary

Fixes a critical bug in weight setting where platform_manager was referenced without self., causing a NameError and preventing weights from being set.

Error seen in production:

ERROR | background_tasks:set_weights_loop:303 - Error in setting weights: name 'platform_manager' is not defined

Changes

• Fixed platform_manager.extract_platform_metrics_from_stats() → self.platform_manager.extract_platform_metrics_from_stats() (line 355)
• Fixed platform_manager.get_all_platforms() → self.platform_manager.get_all_platforms() (line 384)

Test plan

• All 29 unit tests pass locally
• Verified no other instances of this bug exist in the codebase

[Copilot]

Pull request overview

Fixes a runtime error in the validator’s weight/telemetry delta processing by consistently using the WeightsManager’s PlatformManager instance when extracting per-platform metrics and iterating platform configs.

Changes:

• Use self.platform_manager (instance member) instead of an undefined platform_manager reference when extracting platform metrics.
• Use self.platform_manager when iterating all platform configs to compute dynamic error totals.

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