* feat(providers): add Augment (Auggie CLI) local provider
Adds a new local, no-auth provider that spawns the user's local `auggie`
CLI (`auggie --print --quiet --model <m> --`) and pipes a flattened prompt
via stdin, wrapping stdout as an OpenAI-compatible SSE stream or a single
chat.completion JSON body depending on the request's `stream` flag.
Auth is delegated entirely to `auggie login` outside OmniRoute — the
connection is registered `noAuth: true` and `refreshCredentials()` is a
no-op, matching the existing `NOAUTH_PROVIDERS` credential-less flow
(synthetic connection, no DB row required). An optional connection row is
still admitted via `FREE_APIKEY_PROVIDER_IDS` for display/priority
tracking, consistent with `opencode`. The dashboard "Test Connection"
flow spawns `auggie --version` to confirm the CLI is installed and
runnable, since there is no API key to validate upstream.
Security hardening (spawn is an untrusted-input sink):
- Command injection: spawn no longer passes `shell: true` on Windows. The
binary is resolved to a concrete path/name and argv is handed straight to
the OS loader, so no cmd.exe metacharacter interpretation is possible.
- Argument injection (flag smuggling): `model` is validated against the
registry allowlist (`auggieProvider.models`) before any spawn — a model
that is unknown or starts with "-" is rejected with a sanitized error and
the subprocess is never started. A trailing `--` marks end-of-options in
the argv as belt-and-suspenders.
Co-authored-by: chamdanilukman <16629923+chamdanilukman@users.noreply.github.com>
Inspired-by: https://github.com/decolua/9router/pull/1200
* test(golden): regenerate translate-path for auggie provider
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Co-authored-by: chamdanilukman <16629923+chamdanilukman@users.noreply.github.com>
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