v3.6.0 — Group P A-wave + P6 product-shape doctrine

Group P A-wave (A1–A15: three-level review model, conductor-first Phase 4, path+risk review triggers, citation gate, fixture-proving CI, rules primitive, /wave, /goal, consensus tiers, 5-state runtime verdicts, seams, requirement ledger) — previously merged unreleased — plus the P6 product-shape doctrine ported from Dokima: PRODUCT_SHAPE_PROTOCOL with the canonical role table (GOAL/ORCHESTRATOR/BOTS/REVIEW PANEL/HONESTY LOOPS) + two-stack rule, the feature map as a mandatory decomposition artifact (features from cited stories, connects_to edges from seams, gaps both directions, F-unmapped shouts), and feature-grouped landing (one merge per FEATURE, never per ticket; blocked holds the whole feature). 696 tests green, 98 agents in sync, Pass 55 pins the doctrine RED-capably.