Extension Model

Extension entries are declared in devflow.toml under [extensions.*].

Supported sources:

• builtin: Extensions directly compiled and linked into the CLI.

• path: (Planned) Local extensions loaded via path.

• subprocess: Binaries named devflow-ext-<stack> available in system $PATH that implement the standard JSON over stdio extension protocol.

Validation includes:

• API version checks

• capability coverage for target profiles

• JSON decode payload mapping for subprocesses