unsloth/studio/backend
Daniel Han-Chen ae41bfdbfd Fix/adjust diffusion: round 13 P1+P2 batch for PR #5754
Round 13 reviewer aggregate (logs/review_round13_aggregate.md):

P1 fixes:
- routes/export.py load_checkpoint refuses (409) when an export job
  is currently active, mirroring the chat/diffusion/training handoff
  guards. ``is_export_active`` absence is tolerated for older / mocked
  backends.
- core/inference/diffusion.py local-path GGUF loader now accepts
  relative directories (Studio exports surface as ``exports/my-flux``)
  and confines ``gguf_filename`` to the chosen repo via
  ``_resolve_local_gguf_child``: absolute filenames, ``..`` segments,
  and Windows separators are rejected before any file is opened.
- core/inference/diffusion.py status() exposes ``active_gguf_filename``
  alongside the pending variant so delete guards can pair each owned
  repo with the GGUF variant it actually owns.
- routes/models.py cache delete + finetuned delete adopt a shared
  ``_diffusion_owned_targets`` + ``_variant_delete_is_safe_for_owned_gguf``
  helper. Per-variant deletes during a swap-in-flight cannot remove
  the active variant while the pending variant is loading.
- core/inference/llama_cpp.py publishes ``loading_model_identifier``
  before ``_download_gguf`` starts and clears it in ``finally``. Cache
  delete (routes/models.py) and the cross-workload release helpers
  (routes/inference.py::_release_llama_for and
  diffusion.py::_release_chat_backend_for_diffusion) consult it so a
  multi-GB HF download cannot be rmtree'd or be ignored by /images/load
  while still in flight.

P2 fixes:
- core/inference/diffusion.py adds
  ``generate_image_with_metadata`` + ``async_generate_with_metadata``;
  /images/generate uses it so the response model/family reflect the
  pipeline that actually produced the image even if an unload races
  the route.
- core/inference/diffusion.py: ``base_repo`` only applies when picking
  a GGUF quant. Filling Base diffusers repo while loading a full
  diffusers repo no longer silently swaps the load target.
- core/inference/diffusion.py: failed device placement / offload now
  drops pipe + transformer references explicitly before drain so
  partial allocations cannot keep VRAM around.
- core/inference/diffusion.py: torch/diffusers imports surface as a
  clear RuntimeError naming the missing dependency.
- core/inference/diffusion.py: _smart_base_repo splits on both POSIX
  and Windows separators so ``C:\\Users\\me\\base\\FLUX.2-klein-4B-GGUF``
  no longer picks the Base 4B variant via the parent dir.

Tests:
- 6 new regression cases (Windows leaf, traversal/backslash rejection,
  relative-dir local load, metadata snapshot, lock serialisation).
- All 59 diffusion backend + route tests pass.
2026-05-25 05:57:32 +00:00
..
assets Add Qwen3.6 inference defaults for Studio (#5065) 2026-04-16 11:42:42 -07:00
auth studio: security and hardening pass (auth rate-limit, sandbox, path containment, schema validation, headers) (#5375) 2026-05-13 06:12:18 -07:00
core Fix/adjust diffusion: round 13 P1+P2 batch for PR #5754 2026-05-25 05:57:32 +00:00
loggers Studio: stop truncating long log lines as suspected base64 (#5335) 2026-05-08 13:07:18 +04:00
models Fix/adjust diffusion: round 11 export-active defense-in-depth + state/path/gguf for PR #5754 2026-05-25 04:30:10 +00:00
plugins fix(gh_client): fail fast on 401/403 auth errors instead of retrying forever (#5325) (#5329) 2026-05-08 21:57:41 +04:00
requirements Fix/adjust diffusion: round 11 export-active defense-in-depth + state/path/gguf for PR #5754 2026-05-25 04:30:10 +00:00
routes Fix/adjust diffusion: round 13 P1+P2 batch for PR #5754 2026-05-25 05:57:32 +00:00
state unsloth run: add --enable-tools/--disable-tools server-side tool policy (#5277) 2026-05-05 12:45:15 +04:00
storage Studio: persist chat history in backend storage (#5272) 2026-05-22 06:18:05 -07:00
tests Fix/adjust diffusion: round 13 P1+P2 batch for PR #5754 2026-05-25 05:57:32 +00:00
utils Studio: tools, thinking blocks, code execution and web search for safetensors (#5520) 2026-05-19 06:30:17 -07:00
__init__.py Final cleanup 2026-03-12 18:28:04 +00:00
_platform_compat.py Fix Studio crash on Anaconda/conda-forge Python (#4484) 2026-03-22 05:36:55 -07:00
colab.py Fix/studio colab button message: Add fallback message for Colab Studio button when proxy URL fails (#4866) 2026-04-05 21:57:45 -07:00
main.py Studio: persist chat history in backend storage (#5272) 2026-05-22 06:18:05 -07:00
run.py Studio: stop hint, Uvicorn log rename, reachability check + Mac UI CI retry hardening (#5503) 2026-05-17 07:44:06 -07:00
startup_banner.py Studio: stop hint, Uvicorn log rename, reachability check + Mac UI CI retry hardening (#5503) 2026-05-17 07:44:06 -07:00