PCLOCK-REL-01 v1.1a: analysis plan, sample-size amendment and local freeze record

Original local analysis plans, the one-time sample-size amendment, the v1.1a clarification patch, the final frozen contract and SHA-256 manifests for PCLOCK-REL-01. The original documents were fixed locally before effect computation; this later public deposit documents the local analysis history. It does not establish a public timestamp at the earlier freeze date. No participant data, manuscript, primary result tables or source coefficient workbook are included. The archive documentation is licensed CC BY 4.0.