third-pass-deep-read

# Third Pass Deep Read Keshav's third pass: sentence-by-sentence re-read with proofs/derivations included, attempting virtual re-implementation. The heaviest pass of the three — terminal step of the Keshav cascade. ## Execution Subagent — spawned via spawn-agent skill. ## Why renamed from `third-pass-verify` (v1's name) v1's version of this SOP (`staged/wechat-article-v1/skills/third-pass-verify/`) treated this as a "targeted re-check of uncertain_fields, no-op if none flagged" step — which, per the coverage audit's S2 finding, effectively deleted Keshav's real third pass (a 4-5+ hour re-implementation attempt) and replaced it with a cheap verification step serving v1's own pipeline. This v2 SOP restores the actual third pass; the rename to `third-pass-deep-read` marks that this is not the same behavior as the old `third-pass-verify`, even though both sit in the same cascade position. ## Why Subagent A genuine re-implementation attempt needs a context that can hold the full paper and reason through design alternatives without being anchored to how pass 2 already framed the contribution. <!-- BEGIN available-tables (generated) --> ## Available SOPs Optional, no fixed order; the final leaf is always a sop. | SOP | When to use | | --- | --- | | spawn-agent | Spawn a customized CC subagent with full MCP tool access. | <!-- END available-tables (generated) -->