[Bug] Wrong output filename in sd-cli if the argument of -o option ends with a number

[ZahyGabi]

Git commit

$ sd-cli --version
stable-diffusion.cpp version master-675208d-221-ge411520, commit e411520

Operating System & Version

FreeBSD 15.x

GGML backends

CPU

Command-line arguments used

sd --cfg-scale 1 --steps 1 -m SD/sdxs.safetensors -p 'a cute puppy' -o cute.dog.5

Steps to reproduce

$ sd-cli --cfg-scale 1 --steps 1 -m SD/sdxs.safetensors -p 'a cute puppy' -o cute.dog.5
[INFO ] stable-diffusion.cpp:251 - loading model from 'SD/sdxs.safetensors'
[INFO ] model.cpp:373 - load SD/sdxs.safetensors using safetensors format
[INFO ] stable-diffusion.cpp:335 - Version: SDXS
[INFO ] stable-diffusion.cpp:363 - Weight type stat: f16: 610
[INFO ] stable-diffusion.cpp:364 - Conditioner weight type stat: f16: 196
[INFO ] stable-diffusion.cpp:365 - Diffusion model weight type stat: f16: 280
[INFO ] stable-diffusion.cpp:366 - VAE weight type stat: f16: 134
|==================================================| 610/610 - 1521.20it/s
[INFO ] model.cpp:1629 - loading tensors completed, taking 0.40s (process: 0.00s, read: 0.34s, memcpy: 0.00s, convert: 0.00s, copy_to_backend: 0.00s)
[INFO ] stable-diffusion.cpp:860 - total params memory size = 840.00MB (VRAM 0.00MB, RAM 840.00MB): text_encoders 235.06MB(RAM), diffusion_model 602.60MB(RAM), vae 2.34MB(RAM), controlnet 0.00MB(VRAM), pmid 0.00MB(RAM)
[INFO ] stable-diffusion.cpp:918 - running in eps-prediction mode
[INFO ] stable-diffusion.cpp:3506 - sampling using Euler A method
[INFO ] denoiser.hpp:403 - get_sigmas with discrete scheduler
[INFO ] stable-diffusion.cpp:3633 - TXT2IMG
[INFO ] stable-diffusion.cpp:3250 - get_learned_condition completed, taking 341 ms
[INFO ] stable-diffusion.cpp:3361 - generating image: 1/1 - seed 42
|==================================================| 1/1 - 8.19s/it
[INFO ] stable-diffusion.cpp:3403 - sampling completed, taking 8.21s
[INFO ] stable-diffusion.cpp:3414 - generating 1 latent images completed, taking 8.25s
[INFO ] stable-diffusion.cpp:3417 - decoding 1 latents
[INFO ] stable-diffusion.cpp:3427 - latent 1 decoded, taking 5.77s
[INFO ] stable-diffusion.cpp:3431 - decode_first_stage completed, taking 5.78s
[INFO ] stable-diffusion.cpp:3741 - generate_image completed in 14.37s
[INFO ] main.cpp:421 - save result image 0 to 'cute.dog.png' (success)

What you expected to happen

The filename should be cute.dog.5.png

What actually happened

The number stripped from the filename.

Logs / error messages / stack trace

No response

Additional context / environment details

No response