/**
 * @personal-blog/config — EPPP configuration service.
 *
 * [E00-S04-T01] TypeBox/Ajv schema: the package boundary exposes the
 * configuration schema (`configSchema`, defined with TypeBox) and the Ajv
 * schema-validation entry point (`validateConfig`).
 *
 * [E00-S04-T02] Field-specific startup error: the boundary also exposes the
 * startup validation entry point (`assertValidConfig`) and its field-specific
 * errors (`MissingRequiredSettingError` — names the missing required setting —
 * and `ConfigStartupError` — names each violating field), so the application
 * fails fast at startup when a required setting is missing.
 *
 * [E00-S04-T03] Secret redaction: the boundary also exposes the redaction
 * layer (`redactConfig` — a config value with every secret replaced by
 * `[REDACTED]`, for logging the resolved configuration — and `redactText` —
 * scrubbing free-form log text of the config's secret values), which the
 * server's redacting logger applies to every log line, so secrets
 * automatically redact from logs.
 *
 * [E00-S04-T04] Environment adapter: the boundary also exposes
 * `loadConfigFromEnv` — the workspace's single owner of `process.env` reads.
 * It maps the environment (`HOST`/`PORT`/`DATABASE_URL`/`EPPP_SESSION_SECRET`)
 * onto the validated config shape and validates it with `assertValidConfig`
 * at startup, so every setting flows through the adapter and no other module
 * reads `process.env` directly. `HOST` is validated at the adapter boundary
 * as a hostname or IP address before it is used for binding or logged, so
 * arbitrary env content is never echoed verbatim into the startup log. The
 * `.env.example` template (E00-S04-T05) builds on this boundary in a later
 * task.
 */

export { configSchema } from './schema.js';
export type { Config } from './schema.js';
export { validateConfig } from './validate.js';
export type { ConfigValidationResult } from './validate.js';
export { assertValidConfig, ConfigStartupError, MissingRequiredSettingError } from './startup.js';
export { REDACTED, SECRET_FIELD_NAMES, redactConfig, redactText } from './redact.js';
export { loadConfigFromEnv } from './env.js';