audithandoffdoclisted

Please perform a deep audit of our current task to produce a handoff document that gets another agent fully up to speed. Deliverable: Create a file named `AUDIT_HANDOFF.md` at the project root. Document your current understanding of: - what we are building - why we are building it - the project's telos (ultimate purpose/end-state) - how we are approaching implementation - what has been completed so far - how we define and measure success - current hypotheses - what is true (with evidence) vs what is assumed - what might be wrong - highest-risk areas - what we just tried and the outcome - next hypothesis - open questions Required Structure (use these exact section headers) 1. `# Executive Summary` - 5-10 bullets: current project state, trajectory, and key concerns. 2. `# Product Vision and Telos` - What we are building. - Why it matters. - Desired end-state if the project fully succeeds. 3. `# Implementation Approach` - Architecture and strategy. - Key technical decisions and tradeoffs. - Why this approach was chosen over alternatives. 4. `# Progress So Far` - Completed work. - In-progress work. - Deferred/not started work. - Include concrete references (files, PRs, commits, tests, docs) where possible. 5. `# Success Metrics` - Define primary and secondary metrics. - For each metric include: baseline, current value (if known), target, and measurement method. 6. `# Hypotheses` - Current main hypothesis. - Supporting sub-hypotheses. - What would confirm or falsify each