feat(generate): expose --guidance flag for Flux models

Threads guidance value through CLI → remote payload → server schema →
generate_image() → FluxGuidance node. Ignored for non-Flux families.

Use cases:
- Lower guidance (2.0-3.0) for looser, more photorealistic Flux output
- Higher guidance (4.0-6.0) for tighter prompt adherence

tensors/cli.py

@@ -758,6 +758,14 @@ def generate(  # noqa: PLR0915
     height: Annotated[int | None, typer.Option("-H", "--height", help="Image height (auto from checkpoint)")] = None,
     steps: Annotated[int | None, typer.Option("--steps", help="Sampling steps (auto from checkpoint)")] = None,
     cfg: Annotated[float | None, typer.Option("--cfg", help="CFG scale (auto from checkpoint)")] = None,
+    guidance: Annotated[
+        float | None,
+        typer.Option(
+            "--guidance",
+            "-g",
+            help="FluxGuidance value (Flux only; default 3.5). Ignored for non-Flux models.",
+        ),
+    ] = None,
     seed: Annotated[int, typer.Option("--seed", "-s", help="Random seed (-1 for random)")] = -1,
     sampler: Annotated[str | None, typer.Option("--sampler", help="Sampler name (auto from checkpoint)")] = None,
     scheduler: Annotated[str | None, typer.Option("--scheduler", help="Scheduler name (auto from checkpoint)")] = None,
@@ -1032,6 +1040,7 @@ def generate(  # noqa: PLR0915
             vae=vae,
             lora_name=lora,
             lora_strength=lora_strength,
+            guidance=guidance,
             console=console,
         )
 
@@ -1090,6 +1099,7 @@ def generate(  # noqa: PLR0915
             batch_size=count,
             vae=vae,
             orientation=orientation,
+            guidance=guidance,
         )
 
         if not result_local:

tensors/remote.py

@@ -37,6 +37,7 @@ def remote_generate(
     vae: str | None = None,
     lora_name: str | None = None,
     lora_strength: float = 0.8,
+    guidance: float | None = None,
     console: Console | None = None,
 ) -> dict[str, Any] | None:
     """Generate an image via remote tensors server.
@@ -73,6 +74,8 @@ def remote_generate(
         payload["vae"] = vae
     if lora_name:
         payload["lora_name"] = lora_name
+    if guidance is not None:
+        payload["guidance"] = guidance
 
     try:
         with _build_client(base_url) as client:

tensors/server/comfyui_api_routes.py

@@ -49,6 +49,12 @@ class GenerateRequest(PydanticBaseModel):
     vae: str | None = Field(default=None, description="VAE model name (defaults to sdxl_vae.safetensors)")
     lora_name: str | None = Field(default=None, description="LoRA model filename")
     lora_strength: float = Field(default=0.8, ge=0.0, le=2.0, description="LoRA strength")
+    guidance: float | None = Field(
+        default=None,
+        ge=0.0,
+        le=30.0,
+        description="FluxGuidance value (Flux models only; default 3.5). Ignored for non-Flux models.",
+    )
 
 
 class GenerateResponse(PydanticBaseModel):
@@ -303,6 +309,7 @@ def comfyui_generate(request: GenerateRequest) -> dict[str, Any]:
         vae=vae,
         lora_name=request.lora_name,
         lora_strength=request.lora_strength,
+        guidance=request.guidance,
     )
 
     if not result: