feat(svrnty-vision): Phase 4b complete — full impl + e2e test suite

- palette.py + rembg.py: implement from stubs (Pillow median-cut + rembg u2net)
- vlm.py: rename Spark2→steev (Strix Halo / Ollama); bump max_tokens 1024→4096
  (qwen3-vl:32b thinking mode consumes budget tokens — 4096 min for valid output)
- settings.py: rename spark2_vlm_*/spark1_flux_* → vlm_*/flux_*; real defaults
  (steev 100.88.167.87:11434 Ollama, gx10 100.90.100.10:8188 ComfyUI)
- tests/: conftest.py + test_palette.py + test_rembg.py + test_integration_e2e.py
  (28 unit + 10 integration; 38/38 passing — VLM raw/polished/ugc + FLUX render)
- CLAUDE.md: rewrite to accurate phase status + infra + layout
- requirements.txt + pyproject.toml: add Pillow, rembg, pytest-asyncio deps

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "svrnty-vision"
 version = "0.1.0"
-description = "Sovereign vision HTTP gateway — VLM analysis, FLUX image gen, palette extraction, background removal. Calls Spark services over HTTP."
+description = "Sovereign vision HTTP gateway — VLM analysis (Qwen3-VL via Ollama), FLUX image gen (ComfyUI), palette extraction (Pillow), background removal (rembg). Standalone; usable by any agent."
 readme = "README.md"
 requires-python = ">=3.11"
 license = { text = "Proprietary" }
@@ -18,11 +18,15 @@ dependencies = [
     "pydantic>=2.9,<3.0",
     "pydantic-settings>=2.6,<3.0",
     "httpx>=0.27,<1.0",
+    "Pillow>=11,<13",
+    "colorthief>=0.2.1",
+    "rembg>=2.0,<3.0",
 ]
 
 [project.optional-dependencies]
 dev = [
     "pytest>=8.3,<9.0",
+    "pytest-asyncio>=1.0",
 ]
 
 [tool.setuptools.packages.find]
@@ -31,3 +35,4 @@ where = ["src"]
 [tool.pytest.ini_options]
 pythonpath = ["src"]
 testpaths = ["tests"]
+asyncio_mode = "auto"