feat(complete): bake remaining Manager-installed deps + SAM2 pin

[ductiletoaster]

Summary

Follow-up to #44. Audit of ComfyUI-Manager activity on every pod boot in production showed ~14 packages it reinstalls on each cold start. This bakes the heavy/frequent ones into the complete image and pins SAM2 from facebookresearch git so Manager has nothing left to reinstall for the audited workload.

Audit method

On a fresh K8s pod, captured every ## ComfyUI-Manager: EXECUTE => [..., 'uv', 'pip', 'install', '<pkg>'] line plus every Installed: + <pkg>==<ver> line from boot logs, deduped, cross-referenced against the current extra-requirements.txt. Three categories:

• Already baked — no action needed: accelerate, diffusers, onnxruntime-gpu, opencv-python-headless, matplotlib, piexif, ultralytics, groundingdino-py, timm, plus the three from fix(complete): pre-install Impact/Subpack/Inspire deps to avoid load race #44 (segment-anything, dill, webcolors)
• In this PR — see Change section below
• Skipped — transparent-background, opencv-python (non-headless conflicts with -headless), onnxruntime CPU variant, and the hydra-core/omegaconf/iopath/decord chain. These are either lower-frequency or only relevant to specific custom nodes outside the audited workload. Easy to add later if needed.

Change

Diff against services/comfy/complete/extra-requirements.txt:

 # Additional dependencies
 accelerate>=1.10
 onnxruntime-gpu>=1.22
 diffusers>=0.34
+huggingface-hub>=0.19
+transformers>=4.30
+peft
+typing_extensions

 # Custom node optimizations …
 opencv-python-headless>=4.12
 scipy>=1.16
 matplotlib>=3.10
+spandrel
+sentencepiece
+lark
+ftfy
+protobuf>=3.20.2,<6.0.0

 # ComfyUI Impact Pack + Subpack dependencies
 piexif>=1.1
 ultralytics>=8.3
 segment-anything>=1.0
 dill>=0.3
+# SAM2 from facebookresearch — pinned to the commit Manager installed in
+# production (2026-05-26). Unpin only after testing a newer revision.
+git+https://github.com/facebookresearch/sam2@2b90b9f5ceec907a1c18123530e92e794ad901a4

Group	Package	Why
Top group	huggingface-hub>=0.19	Impact / Inspire / RMBG model downloads
Top group	transformers>=4.30	Impact CLIP-related nodes + transitively many
Top group	peft	LoRA-using workflows
Top group	typing_extensions	Ubiquitous; reinstalled every boot
Optimizations	spandrel	ComfyUI upscaler runtime
Optimizations	sentencepiece	Transformers tokenizers
Optimizations	lark	Impact Pack wildcards engine
Optimizations	ftfy	CLIP text cleanup
Optimizations	protobuf>=3.20.2,<6.0.0	Tight pin (onnx / transformers compat) — matches Manager's spec
Impact Pack	SAM2 git pin	SAM2 functionality was reported "unavailable" in the pod. Pinning to 2b90b9f5ceec907a1c18123530e92e794ad901a4 — the exact commit Manager pulled yesterday — keeps the build reproducible.

Test plan

• CI builds complete-cuda cleanly (no resolver conflicts between transformers, protobuf pin, peft)
• SAM2 git clone succeeds during build (it's a sizeable pull)
• After harmony cluster picks up the new image SHA, boot logs show zero ## ComfyUI-Manager: EXECUTE => [..., 'install', ...] lines for the listed packages
• [Impact Pack] The SAM2 functionality is unavailable message disappears
• Cold-boot time noticeably shorter (current first-boot Manager activation ~3–5 min downloading wheels)

Stacked on

• fix(complete): pre-install Impact/Subpack/Inspire deps to avoid load race #44 (merged) — added segment-anything, dill, webcolors

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