Deterministic Readiness Parser

[SorraTheOrc]

Parse the audit text first line to derive status deterministically; tolerate small formatting variance but never infer beyond the first line.

Acceptance Criteria

• Parser maps first-line tokens to Complete|Partial|Not Started|Missing Criteria.
• CLI/API rejects writes missing a clear readiness line with helpful error.
• No external calls or inference used.

Minimal implementation

• Implement parseReadinessLine(text) utility; wire into write path; add unit tests.