v1.0.0b4

What's Changed

Added

• Language-aware full-text search: SearchableText now uses per-object
  language for stemming. The pgcatalog_lang_to_regconfig() PL/pgSQL function
  maps Plone language codes (ISO 639-1, 30 languages) to PostgreSQL text search
  configurations (e.g. "de" → german). Falls back to 'simple' for
  unmapped or missing languages. Non-multilingual sites are unaffected.

  Python mirror: columns.language_to_regconfig() for testing/validation.

• Title/Description text search: Title and Description queries now use
  tsvector word-level matching instead of exact JSONB containment.
  catalog(Title="Hello") now correctly matches "Hello World".
  Backed by GIN expression indexes with 'simple' config (no stemming).

• Automatic addon ZCTextIndex support: Addon-registered ZCTextIndex fields
  are automatically discovered at startup. GIN expression indexes are created
  dynamically by _ensure_text_indexes(), and queries use tsvector matching --
  zero addon code needed.

Fixed

• Title/Description query broken: Previously, querying Title or Description
  as ZCTextIndex used JSONB exact containment (idx @> '{"Title":"Hello"}'),
  which only matched exact values, not words within text. Now uses
  to_tsvector/plainto_tsquery for proper word-level matching.

Full Changelog: v1.0.0b3...v1.0.0b4