Diagnostics for implements Node @table over a table with no node metadata

A type declared implements Node @table(name: "x") over a table whose jOOQ class publishes no __NODE_* metadata has exactly one working spelling, explicit @node, and neither of the two spellings an author would naturally reach for says so. Bare id: ID! rejects with column 'id' could not be resolved in the jOOQ table; did you mean: ..., whose candidate list pushes the author toward @field(name:), which would satisfy the classifier while publishing a Node contract that cannot round-trip through Query.node. Writing id: ID! @nodeId instead rejects with @nodeId requires the containing type to be a node type (via @node or KjerneJooqGenerator metadata), which is accurate about the rule and silent about the remedy. In both cases the author has already stated their intent unambiguously by implementing the Node interface, and the build declines to name the one directive that would honour it.

Scope is diagnostics only: no classification changes, no inference. The likely shape is a targeted rejection at the classifier that fires when a type implements Node, carries @table, and the bound table has no metadata, naming @node and stating that the table publishes no node identity to infer from. It should pre-empt the column-lookup message rather than decorating it, since the did-you-mean list is the actively harmful part.

Sibling to the metadata-present branch of the same trap, which node inference has already fixed (R580, see roadmap/changelog.md). That item deliberately left this branch alone to avoid mixing a classification change with a message change, and its non-goals recorded the three-spelling classification that motivates this one: over a metadata-free table, explicit @node is the only working spelling, and the two an author would naturally try (bare id: ID!, and id: ID! @nodeId) both reject. The surviving trap is narrower now that inference covers the metadata-present case, and the message can say "this table publishes no node metadata" as a contrast with a path that actually exists.