v0.4.0 — flows v1 — generated diagrams, directional verified edges

flows v1 — a new page category (docs/RESEARCH-FLOWS.md, design chosen by an adversarial 5-approach build-off): a flow is line-parseable flow-meta from which wiki-flow-render.mjs generates a GitHub-safe Mermaid diagram + anchored tables; wiki-flow-check.mjs computes the tier (structural → anchored → directional edge-cited → branch-audited → set-validated). The directional graft — a verified edge must cite the call site in the caller's own code and name the callee — closes the edge-existence hole that broke all five prototypes; set-equality is proven non-vendorable and lives in a user-space validators: seam (ADR-007). Folded into wiki-check; dogfood: flows/bootstrap-vendoring.