Delivery Loop: task_773440ef4d966b2f11ef07ff37a262ccf63ce950203391daed82c191

[delivery-loop-evilstar-0728]

Delivery Loop Draft PR

Generated from durable Task, Plan, Git head, and verified Evidence snapshots.

Source task

• Task: manual/delivery-loop-owner/phase7-main-chain-requirement-20260807
• Revision: 4
• Title: Add strict SHA-256 digest validation helper
• Repository: evilstar9527/delivery-loop
• Plan: plan_178e12ac130fefba3d74868109470e5ca5bde8c633dad8f2e697f2d7 v1 (sha256:424d48340641c600c716dd3ad515d10d3487aa912e3477ef3c8a81e9534822b2)

Change summary

• Objective: Add and verify a strict exported SHA-256 digest-format helper with focused unit coverage.
• Head: f44157dc6be863d07b4ab39526d9809831f82766 on agent/task_773440ef4d966b2f11ef07ff37a262ccf63ce950203391daed82c191/attempt_item_3d488555685f65bb921db69fa9ce745e8912a3b8
• Completed add-strict-sha256-digest-helper: Implement and verify strict SHA-256 digest validation

Acceptance criteria

• AC 1: The helper accepts sha256: followed by exactly 64 lowercase hexadecimal characters. — passed
  • Evidence: evidence_commit_c2f64688d4947cd0a5dc42034846701aadc73e1b880f1d03dffcc80c, evidence_verification_528a293a69afb33621c116547c5378a33646e292, evidence_verification_abc9a3f0fe054b418d6a38bdec3008ab97c32dc5
• AC 2: The helper rejects uppercase hexadecimal characters, wrong prefixes, and digests with the wrong length. — passed
  • Evidence: evidence_commit_c2f64688d4947cd0a5dc42034846701aadc73e1b880f1d03dffcc80c, evidence_verification_528a293a69afb33621c116547c5378a33646e292, evidence_verification_abc9a3f0fe054b418d6a38bdec3008ab97c32dc5
• AC 3: Focused unit tests and the repository required verification pass. — passed
  • Evidence: evidence_commit_c2f64688d4947cd0a5dc42034846701aadc73e1b880f1d03dffcc80c, evidence_verification_528a293a69afb33621c116547c5378a33646e292, evidence_verification_abc9a3f0fe054b418d6a38bdec3008ab97c32dc5

Risks

• Review the exact repository diff and required checks before merge.
• Repository write changes application behavior; merge remains human-controlled.

Test evidence

• test:unit — exit 0, 40132 ms, head f44157dc6be863d07b4ab39526d9809831f82766, Evidence evidence_verification_abc9a3f0fe054b418d6a38bdec3008ab97c32dc5
• verify:all — exit 0, 234073 ms, head f44157dc6be863d07b4ab39526d9809831f82766, Evidence evidence_verification_528a293a69afb33621c116547c5378a33646e292

Unfinished items

• None.

Rollback

• Revert bot commit f44157d; no deployment is part of this Draft PR.

[evilstar9527]

Please add focused unit coverage for isSha256Digest: accept the lowercase sha256: prefix followed by exactly 64 lowercase hex characters, and reject uppercase hex, incorrect lengths, and a different prefix. Keep the implementation scoped to this helper unless the tests expose a correctness issue.