fix(codegen-ts): emit type-only Drizzle symbols with import type (verbatimModuleSyntax) (#165)

[dmealing]

Fixes #165.

Problem

The default entityFile() output imports Drizzle type-only symbols as value imports — InferSelectModel / InferInsertModel (drizzle-orm) and AnyPgColumn / AnySQLiteColumn (*-core, used only as a .references() return-type annotation). Under verbatimModuleSyntax: true (a common default in modern Vite/TS app templates), tsc rejects each with TS1484, so a generated DAO fails tsc -b with hundreds of errors even though it runs fine under a bundler.

Fix

Mark the three symbols type-only via ts-poet's t: prefix — the idiom already used for FastifyInstance/Hono/TPH imports — so they emit as import type (or an inline type modifier when mixed with value imports from the same module, e.g. import { relations, type InferInsertModel } from "drizzle-orm"). Three one-line changes in inferred-types.ts + drizzle-schema.ts.

This fixes both the built-in generator and the ADR-0034 scaffold-and-own reference template, which delegates to the same renderDrizzleSchema / renderInferredTypes primitives.

Verification

• New real-tsc compile guard with verbatimModuleSyntax ON, over an entity with a self-referential FK (so AnyPgColumn is exercised). A negative control (revert the fix) confirms it fails with TS1484 for all three symbols; with the fix it's zero diagnostics.
• Golden snapshots updated — the only change is value→type imports (diff inspected).
• Full codegen-ts suite green (909), typecheck clean.

TS-only (codegen output); no metamodel or cross-port impact.

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