v0.9.0

Added

• Explicit relation types in _rel: each field can now be declared as an object with an explicit type instead of the legacy string shorthand
  • many2one — foreign key on the child pointing to a parent (same semantics as the previous string shorthand; userId: users still works)
  • one2one — one child per parent; GET /parent/:id/child returns a single object instead of an array
  • many2many — join through a pivot collection; requires through, foreignKey and otherKey fields
• nested: true flag: add nested: true to any relation to auto-embed the related data in every GET response without needing ?_expand or ?_embed. many2one/one2one embed the parent object under the derived key (userId → user, FK preserved); many2many embed the resolved target array under the alias key
• Bidirectional many2many nested routes: declaring a many2many relation now automatically registers both directions — GET /posts/:id/tags and GET /tags/:id/posts — from a single _rel entry
• parseRelations() utility (src/storage/parseRelations.ts): normalises raw _rel YAML to canonical RelationDef objects on startup; string shorthand is transparently upgraded to { type: "many2one", target }. Used by both the file storage and the in-memory programmatic API
• ecommerce init sample: yrest init --sample ecommerce scaffolds a full e-commerce domain (products, orders, users, reviews, categories, order-items) with all relation types, six _routes entries (scenarios, template vars, delay, error injection)
• Enriched basic and relational init samples: more collections, more fields, query examples in comments, and all three relation types demonstrated in relational
• src/router/templates/about.helpers.ts: extracted all helper functions from about.template.ts into a dedicated module (escapeHtml, badge, endpointRow, resourceAccordion, nestedRoutesAccordion, snapshotAccordion, customRoutesAccordion, handlersAccordion, examplesBlock). about.template.ts is now ~200 lines vs ~555 before

Changed

• /_about nested routes accordion now shows:
  • Both forward and inverse routes for each many2many relation (POST /posts/:id/tags + GET /tags/:id/posts)
  • Yellow nested badge on relations declared with nested: true
  • one2one badge in teal for one-to-one relations
  • many2many badge in indigo for pivot-based relations
• Relations type is now Record<string, Record<string, RelationDef>> where RelationDef is a discriminated union (many2one | one2one | many2many), each with an optional nested?: true flag

Fixed

• /_about crash with object-format _rel: in v0.8.1, using the new one2one or many2many object syntax in _rel caused TypeError: parent.endsWith is not a function inside the nested-routes loop of about.template.ts, returning a 500 for every /_about request. Fixed by parseRelations() normalising all relation values before they reach the template layer