RUDPClient/openspec/changes/archive/2026-04-05-fix-authoritative-movement-p1/tasks.md

1. Cadence Contract

• 1.1 Introduce a fixed authoritative movement cadence configuration/runtime surface that server movement stepping can read and tests can observe.
• 1.2 Update the server authoritative movement loop and snapshot emission path to use the configured cadence instead of arbitrary elapsed input.

2. Controlled Reconciliation

• 2.1 Refactor controlled-player reconciliation to distinguish bounded correction from hard snap after authoritative replay.
• 2.2 Wire cadence-aware correction thresholds through the local movement/sync path without changing remote-player interpolation rules.

3. Regression Coverage

• 3.1 Add or update edit-mode tests that prove authoritative movement stepping and snapshot output follow the configured cadence.
• 3.2 Add or update edit-mode tests that prove controlled-player reconciliation uses bounded correction for small error and hard snap for large divergence.
• 3.3 Re-run OpenSpec status and confirm the change is apply-ready.