feat: otto 5K — clean CLI, prompts as files, PER removed, real-world validated

feat: standalone certify, PoW evidence, video recording

feat: incremental intent, benchmark harness, Symphony analysis

feat: intent-to-product — agent-driven build with certifier as environment

fix: remaining 9 review bugs — cost accumulation, retry feedback, QA salvage, subprocess cleanup, dead code

fix: 5 review bugs — spec propagation, filtered return, planner index, retry fields, dead code

merge: Codex branch — monolithic mode, provider abstraction, batch hardening

revert planner_effort default to medium

fix: monolithic mode cost accounting and test speed

Refine QA reuse guidance and update handoff doc

Add monolithic execution and spec-before-coding mode

Decouple proof-of-work from QA gating

Harden QA replay and document bare-output spec passes

Update Claude living doc with 2026-04-02 findings

Fix planner, QA, and benchmark observability