Regenerate the node types from the v2 spec

[lorisleiva]

This PR repoints @codama-internal/spec-generators at @codama/spec@2.0.0-rc.0 and regenerates @codama/node-types, @codama/nodes and @codama/visitors-core against the v2 spec. It is the base of the codama v2 adaptation stack; hand-written package adaptation to the v2 shapes follows in stacked PRs on top, so downstream packages remain red until the stack is green.

Generator changes

• Single-major generator. Drops the @codama/spec-v1 alias and the frozen v1 generation step. The v1 node types in @codama/upgrade are now a frozen static snapshot (packages/upgrade/src/v1/README.md); the generator only renders the spec on its own branch, and prior majors are ported forward by patch.
• Base attributes. Appends spec.base (the universal plugins) to every node, so plugins is a TPlugins type parameter on every interface and constructor and is visited by the identity/merge visitors. textNode gains plugins too.
• docs === text. Both render as string | TextNode and are visited (guarding the string-or-textNode duality). Deletes the v1 Docs alias and the parseDocs/DocsInput array layer.
• Identifier casing preserved. Constructors brand identifiers via identifierString rather than re-casing them, per v2 dropping the camelCase mandate.
• CODAMA_VERSION names the spec shape. Pre-release metadata is stripped (2.0.0-rc.0 → 2.0.0); the CodamaVersion type stays strict.
• Constructor ergonomics. Trailing optional positional parameters fold into the options bag (e.g. constantNode(identifier, type, value, { docs })); pluginNode(namespace, payload?, { plugins }) keeps its payload positional.
• Dead meta-model removed. Nested-union / tuple / float handling deleted.

Verification

Generated output type-checks, lints and is idempotent; the frozen v1 snapshot is untouched. No changeset beyond the v2 major entry (this line rides the cut's pre-mode rc).

[changeset-bot]

🦋 Changeset detected

Latest commit: e9dfcfa

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 17 packages

Name	Type
@codama/node-types	Major
@codama/nodes	Major
@codama/visitors-core	Major
@codama/errors	Major
@codama/cli	Patch
@codama/dynamic-codecs	Patch
@codama/dynamic-parsers	Patch
codama	Major
@codama/nodes-from-anchor	Patch
@codama/renderers-core	Patch
@codama/upgrade	Patch
@codama/validators	Major
@codama/visitors	Major
@codama/dynamic-address-resolution	Patch
@codama/dynamic-client	Patch
@codama/dynamic-instructions	Patch
@codama/fragments	Patch

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[lorisleiva]

• Adapt errors to Codama v2 #1167
• Rename node name attribute to identifier #1162
• Regenerate the node types from the v2 spec #1158 👈 (View in Graphite)
• main

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