Adds [peptide_directory] shortcode with card grid, category taxonomy (8 terms),
search, pagination, detail modal, and /v1/compounds REST endpoint. Includes 9
new meta fields (half-life, stability, solubility, etc.), admin data tools for
migration/re-enrichment, integration hooks for cross-plugin extensibility,
dark mode support, and full uninstall cleanup. Refactors AI generator into
PSA_OpenRouter + PSA_KB_Builder classes. Adds PHPUnit tests for PostType and
Directory classes. Fixes QA findings: dead JS selector, renderError loading
state, numeric meta validation, prepared SQL in uninstall.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Create PSA_Encryption class with AES-256-CBC encrypt/decrypt methods
- Derive encryption key from wp_salt('auth') using SHA-256 hash
- Prepend IV to ciphertext and base64-encode for safe storage
- Update PSA_Admin to encrypt API keys on save, mask on display
- Preserve existing key when empty/mask value submitted (no overwrite)
- Update PSA_AI_Generator to decrypt API key on read from database
- Maintain backward compatibility with plaintext keys (auto-encrypt on next save)
- Prefer wp-config constant over database value for maximum security
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
