Seed the rewrite: profile, calibration, and repo scaffolding

Ground-up replacement for news_triage, whose signal quality failed because it
had no representation of what its user likes -- three keywords fed to BM25 plus
a two-term substring blocklist.

profile/ holds the taste model as prose and TOML: 11 interest blocks, 3 veto
blocks, 5 importance blocks, each a set of probe sentences to be embedded.

The [scoring] constants are fitted, not guessed. CALIBRATION.md records the
measurements against all 3,885 items in the v0.2 database and 40 real feedback
labels, including two findings that changed the design:

- compare blocks by z-score within block, never raw cosine; raw cosine let
  geopolitics win 78% of items and buried known-liked items at median rank 1246
  of 3885 (293 after normalizing)
- veto needs a margin over the interest signal, not a threshold; a plain 0.55
  cutoff falsely killed "Belgian mayor blocks club from hosting Israeli opponent
  in Europa League", which the old substring blocklist also killed

pyproject.toml

@@ -0,0 +1,28 @@
+[project]
+name = "news"
+version = "0.1.0"
+description = "Personal news aggregator with an embedding-based model of taste"
+requires-python = ">=3.12"
+dependencies = [
+    "httpx>=0.27",           # conditional GET, async polling
+    "feedparser>=6.0",       # RSS/Atom incl. RSS 1.0/RDF, which the old hand-rolled quick-xml parser could not read
+    "fastembed>=0.4",        # bge-small-en-v1.5 via ONNX on CPU; deliberately not torch/sentence-transformers
+    "numpy>=1.26",
+    "starlette>=0.37",
+    "jinja2>=3.1",
+    "uvicorn>=0.30",
+    "python-multipart>=0.0.9",
+]
+
+[project.scripts]
+news = "news.cli:main"
+
+[dependency-groups]
+dev = ["pytest>=8.0", "pytest-asyncio>=0.23", "respx>=0.21"]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]