4a769fe3eb
* fix(mermaid): parse quoted participants, create, and the full sequence arrow vocabulary The shipped sequenceDiagram extractor silently dropped or rejected Mermaid-valid constructs: - `participant "Alice Smith"` (quoted name, no alias) vanished from the IR because the participant regex only accepted bare [\w.:-]+ ids. - `participant "Alice Smith" as A` and `actor "Bob Builder" as B` lost their quoted display names and aliases. - `create participant B` directives were ignored. - Bidirectional messages `A<<->>B` / `A<<-->>B` (Mermaid v11.0+) hard-failed with "malformed edge". - `->` / `-->` (open arrows with no arrowhead per the Mermaid docs) were misclassified as filled arrows. - A message touching a declared `actor` overwrote its shape with "lifeline" because endpoints were force-added as lifelines. The fix expands the participant regex to quoted names (with or without an `as` alias) plus the `create` prefix, teaches the message regex the bidirectional and open arrow forms, preserves declared actor shapes, and classifies open arrows as undirected with no arrowhead. Multi-word endpoints introduced by quoted declarations resolve correctly while compact forms like `A-->>B` keep their ids. All forms were verified against the real Mermaid v11.16.1 parser. Adds a verification gate covering every form and updates the import reference to document the supported sequence grammar. * chore: bump plugin version to 2.4.2 --------- Co-authored-by: Cathryn Lavery <50469282+cathrynlavery@users.noreply.github.com> Co-authored-by: Cathryn Lavery <cathryn@bestself.co>