feat: initial commit — repo scaffold and v1 scope

Scope settled 2026-07-16: implements portfolio-optimiser-commons
ingest-spec (commons keeps spec authorship), Python 3.10+ stdlib-only
core, security delegated to llm-ingestion-guard at persist gates.
Doors: spec-based ingestion, bundle inbox (md/txt/csv/json/html core,
binary formats behind [extract]), external bundle import.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QeqhJpYQyghASjiJo5EhGg

pyproject.toml

@@ -0,0 +1,38 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "llm-ingestion-okf"
+version = "0.1.0"
+description = "Shared OKF (Open Knowledge Format) ingestion library: spec-based connectors, bundle inbox, and external-bundle import, with security delegated to llm-ingestion-guard."
+readme = "README.md"
+license = "MIT"
+requires-python = ">=3.10"
+authors = [{ name = "Kjell Tore Guttormsen" }]
+classifiers = [
+    "Development Status :: 2 - Pre-Alpha",
+    "Intended Audience :: Developers",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+]
+# Core stays stdlib-only. The single permitted future runtime dependency is
+# llm-ingestion-guard (>=0.2,<0.3), added when the first persist gate lands.
+dependencies = []
+
+[project.optional-dependencies]
+# Reserved for binary file-type extraction parsers (pdf/docx/xlsx).
+# Populated when Door B's binary extraction is implemented.
+extract = []
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/llm_ingestion_okf"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py310"
+
+[tool.mypy]
+strict = true
+python_version = "3.10"