After TOML loading and generic env overrides, config.Load now checks
$PORT and $PORT_GRPC and overrides ServerConfig.ListenAddr and
ServerConfig.GRPCAddr respectively. These take precedence over all
other config sources because they represent agent-assigned authoritative
port bindings.
Handles both Base embedding (MCR, MCNS, MCAT) and direct ServerConfig
embedding (Metacrypt) via struct tree walking.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Base type with standard sections (Server, Database, MCIAS, Log)
- Duration wrapper type for TOML string→time.Duration decoding
- Generic Load[T] with TOML parse, reflection-based env overrides,
defaults, required field validation, optional Validator interface
- Env overrides: PREFIX_SECTION_FIELD for string, duration, bool,
[]string (comma-separated)
- WebConfig exported for services with web UIs (not embedded in Base)
- 16 tests covering full/minimal configs, defaults, env overrides,
validation, error cases
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
