feat(code): support Fireworks /routers model ids (#4591)

Fireworks router model ids (`accounts/fireworks/routers/...`) now
display compactly in the status bar and support `/effort` reasoning
controls, matching individual Fireworks model ids.

---

Fireworks exposes two fully-qualified model-id forms: individual models
(`accounts/fireworks/models/...`) and routers that dispatch across
models (`accounts/fireworks/routers/...`, e.g.
`accounts/fireworks/routers/glm-5p1-fast`; see
[models.dev](https://models.dev/providers/fireworks-ai/)). Previously
only the `models/` form was recognized, so router ids rendered with the
full prefix in the status bar and never qualified for reasoning-effort
controls.

This teaches the two places that key off the qualified prefix to accept
both forms:

- `ModelLabel`'s `PROVIDER_PREFIX_STRIPS` now strips the `routers/`
prefix for compact status-bar display.
- `_classify_reasoning_provider` gates `/effort` on a shared
`_FIREWORKS_MODEL_ID_PREFIXES` tuple covering both forms, so router
models get the same family-based effort support as individual models.

The model-family logic (Kimi/GLM/DeepSeek) is substring-based and
already works for either form.

Made by [Open
SWE](https://openswe.vercel.app/agents/29503e81-c1ee-65e7-b10d-56661b75aa89)

---------

Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>

libs/code/deepagents_code/_constants.py

@@ -13,6 +13,12 @@ from typing import Final
 DEFAULT_AGENT_NAME: Final[str] = "agent"
 """Default agent / assistant identifier when no `-a` flag is given."""
 
+FIREWORKS_MODEL_ID_PREFIXES: Final[tuple[str, ...]] = (
+    "accounts/fireworks/models/",
+    "accounts/fireworks/routers/",
+)
+"""Fully-qualified prefixes for Fireworks model and router IDs."""
+
 SYSTEM_MESSAGE_PREFIX: Final[str] = "[SYSTEM]"
 """Prefix for synthetic human messages (e.g. interrupt cancellation notices).
 

libs/code/deepagents_code/reasoning_effort.py

@@ -9,6 +9,7 @@ from typing import TYPE_CHECKING, Any, Literal, NamedTuple, TypeAlias, get_args
 if TYPE_CHECKING:
     from collections.abc import Callable
 
+from deepagents_code._constants import FIREWORKS_MODEL_ID_PREFIXES
 from deepagents_code.model_config import CODEX_PROVIDER, ModelSpec
 
 logger = logging.getLogger(__name__)
@@ -456,7 +457,7 @@ def _classify_reasoning_provider(provider: str, model: str) -> ReasoningProvider
         return "anthropic"
     if provider == "google_genai" and model_lower.startswith("gemini-3"):
         return "google_genai"
-    if provider == "fireworks" and model_lower.startswith("accounts/fireworks/models/"):
+    if provider == "fireworks" and model_lower.startswith(FIREWORKS_MODEL_ID_PREFIXES):
         return "fireworks"
     if provider == "xai" and _is_xai_grok_45(model_lower):
         return "xai"

libs/code/deepagents_code/tui/widgets/status.py

@@ -14,6 +14,7 @@ from textual.reactive import reactive
 from textual.widget import Widget
 from textual.widgets import Static
 
+from deepagents_code._constants import FIREWORKS_MODEL_ID_PREFIXES
 from deepagents_code._env_vars import HIDE_CWD, HIDE_GIT_BRANCH, is_env_truthy
 from deepagents_code.config import get_glyphs
 from deepagents_code.tui.widgets.loading import Spinner
@@ -27,11 +28,11 @@ if TYPE_CHECKING:
     from textual.timer import Timer
 
 PROVIDER_PREFIX_STRIPS: dict[str, tuple[str, ...]] = {
-    "fireworks": ("accounts/fireworks/models/",),
+    "fireworks": FIREWORKS_MODEL_ID_PREFIXES,
 }
 """Some providers (e.g. Fireworks) require fully-qualified IDs like
-`accounts/fireworks/models/...` that crowd out the rest of the status bar;
-strip the registered prefixes before display."""
+`accounts/fireworks/models/...` or `accounts/fireworks/routers/...` that crowd
+out the rest of the status bar; strip the registered prefixes before display."""
 
 ConnectionState = Literal["", "connecting", "reconnecting", "resuming"]
 """Connection states the status bar can display (`''` means cleared)."""

libs/code/tests/unit_tests/test_reasoning_effort.py

@@ -94,6 +94,12 @@ def _restore_settings() -> Iterator[None]:
             ("low", "medium", "high"),
         ),
         ("fireworks:accounts/fireworks/models/glm-5p2", ("none", "high", "max")),
+        # Fireworks routers (`accounts/fireworks/routers/...`) are gated the same
+        # as individual models, so effort support keys off the model family.
+        (
+            "fireworks:accounts/fireworks/routers/glm-5p1-fast",
+            ("none", "high", "max"),
+        ),
         # Recognized provider, wrong model family: the per-provider prefix
         # guards in `_classify_reasoning_provider` (and the Fireworks family
         # check) must reject these rather than fall through to an effort set.
@@ -103,6 +109,9 @@ def _restore_settings() -> Iterator[None]:
         ("google_genai:gemini-2.5-flash", ()),
         ("xai:grok-4", ()),
         ("fireworks:accounts/fireworks/models/llama-v3p1-70b-instruct", ()),
+        # Same guard for the router prefix: a recognized router whose id carries
+        # no known family token must also fall through to no efforts.
+        ("fireworks:accounts/fireworks/routers/llama-v3p1-70b-instruct", ()),
     ],
 )
 def test_supported_efforts_for_model(model_spec: str, efforts: tuple[str, ...]) -> None:
@@ -133,6 +142,8 @@ def test_supported_efforts_for_model(model_spec: str, efforts: tuple[str, ...])
         ("fireworks:accounts/fireworks/models/deepseek-v4-pro", "high"),
         ("fireworks:accounts/fireworks/models/glm-5p2", "max"),
         ("fireworks:accounts/fireworks/models/kimi-k2p7-code", None),
+        # Routers reach the same family-based default lookup as models.
+        ("fireworks:accounts/fireworks/routers/deepseek-v4-pro", "high"),
         ("ollama:llama3.1", None),
     ],
 )

libs/code/tests/unit_tests/tui/widgets/test_status.py

@@ -542,6 +542,17 @@ class TestModelLabelPrefixStripping:
             assert "fireworks:kimi-k2p6" in rendered
             assert "accounts/fireworks/models/" not in rendered
 
+    async def test_fireworks_routers_prefix_stripped(self) -> None:
+        """The fireworks routers prefix is stripped before rendering."""
+        async with StatusBarApp().run_test() as pilot:
+            label = pilot.app.query_one("#model-display", ModelLabel)
+            label.provider = "fireworks"
+            label.model = "accounts/fireworks/routers/glm-5p1-fast"
+            await pilot.pause()
+            rendered = str(label.render())
+            assert "fireworks:glm-5p1-fast" in rendered
+            assert "accounts/fireworks/routers/" not in rendered
+
     async def test_get_content_width_uses_stripped_name(self) -> None:
         """`get_content_width` sizes to the stripped name, not the raw model."""
         async with StatusBarApp().run_test() as pilot: