docs: add Drizzle adapter API reference page

[coderdan]

Summary

The old docs had reference/drizzle — a dedicated API reference for the Drizzle adapter (@cipherstash/drizzle). The new docs have a single guide-style page at content/stack/cipherstash/encryption/drizzle.mdx, but no companion reference for the public surface (encryptedType, extractEncryptionSchema, createEncryptionOperators, the encrypted query operators, batched and/or, EQL migrations).

What's missing

Users reading drizzle.mdx get walkthrough-flow examples but not:

• A complete, sortable table of encrypted query operators and what each maps to in EQL
• encryptedType column-builder configuration surface
• createEncryptionOperators signature and the operator object it returns
• extractEncryptionSchema — when you'd use it and what it returns
• Migration helpers for installing/upgrading EQL from a Drizzle migration

Suggested page

content/stack/reference/drizzle.mdx — keep cipherstash/encryption/drizzle.mdx as the guide and link from there. Mirror the structure of #8 (SDK reference) so the two refs feel consistent.

Reference material

Old page in cipherstash-js-suite git history at apps/docs/src/app/(articles)/reference/drizzle/page.md (commit 1c3d40ed^). Public surface lives in @cipherstash/drizzle — the existing drizzle agent skill referenced in CLAUDE.md is the canonical source.

[calvinbrewer]

Same finding as #8 — the Drizzle adapter API reference already exists as auto-generated TypeDoc output at content/stack/reference/stack/latest/packages/stack/src/drizzle/. It covers everything called out here:

• encryptedType — drizzle/functions/encryptedType
• extractEncryptionSchema — drizzle/functions/extractEncryptionSchema
• createEncryptionOperators — drizzle/functions/createEncryptionOperators
• EncryptedColumnConfig — drizzle/type-aliases/EncryptedColumnConfig
• EncryptionConfigError / EncryptionOperatorError — drizzle/classes/

Created a short prose companion at content/stack/reference/drizzle.mdx covering the cross-cutting things autogen can't express:

• Encrypted query operators table mapping SDK predicates → underlying EQL function (eq → hmac_256, like/ilike → bloom_filter, gt/lt/between → ore_*, inArray, asc/desc)
• Required .equality() / .freeTextSearch() / .orderAndRange() index methods per operator
• Batched and/or composition with one example
• EQL migration generation via extractEncryptionSchema + CLI
• Cross-links to the Drizzle guide, the indexes page (docs: add CREATE INDEX guide for encrypted columns (self-hosted vs Supabase paths differ) #4), the queries page (docs: per-query-type pages for searchable encryption (Equality / Match / Range) #5), and the postgres hub (docs: PostgreSQL landing page (Proxy / Encryption SDK / Drizzle / Supabase / EQL hub) #10)
• "Full API surface" link to the autogen at the bottom

Wired into reference/meta.json under ---API & SDK--- after encryption-sdk. Mirrors the structure of #8.

Pending review on a working branch.