implementer
bcea489391
Adds packages/config (@personal-blog/config) — the EPPP configuration service foundation. The package defines the configuration schema with TypeBox (configSchema: host, port, databaseUrl, sessionSecret — the validated config fields, golden-tuple pins @sinclair/typebox@0.34.52 and ajv@8.20.0) and compiles it with Ajv (validateConfig). The environment adapter (T04), field-specific startup errors (T02) and secret redaction (T03) build on this boundary in later tasks; nothing reads process.env yet. Wiring for the new workspace package: lockfile importer + resolved typebox/ajv tree, apps/server/Dockerfile manifest copy (frozen in-image install must match the lockfile importers), config-schema CI job, package set fixtures (workspace-layout, workspace-config, strict-tsconfig, typescript-pin), probe-file gitignore entry.