scaffold tasks extension

Empty skeleton mirroring the events extension layout: config/manifest,
pyproject + Makefile + ruff/mypy config, FastAPI routers wired into
tasks_ext, NostrClient bootstrap stubs, and an empty static/routes.json.

Models, migrations, CRUD, Nostr publisher/sync, and the API/template
layers land in follow-up commits.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

pyproject.toml

@@ -0,0 +1,67 @@
+[project]
+name = "lnbits-tasks"
+version = "0.0.0"
+requires-python = ">=3.10,<3.13"
+description = "Recurring tasks and chore tracking for LNbits, federated over Nostr (NIP-52)."
+authors = [{ name = "aiolabs", email = "dev@aiolabs.dev" }]
+urls = { Homepage = "https://git.atitlan.io/aiolabs/tasks", Repository = "https://git.atitlan.io/aiolabs/tasks" }
+dependencies = [ "lnbits>1" ]
+
+[dependency-groups]
+dev = [
+    "black",
+    "pytest-asyncio",
+    "pytest",
+    "mypy",
+    "pre-commit",
+    "ruff",
+]
+
+[tool.poetry]
+package-mode = false
+
+[tool.mypy]
+exclude = "(nostr/*)"
+plugins = ["pydantic.mypy"]
+
+[tool.pydantic-mypy]
+init_forbid_extra = true
+init_typed = true
+warn_required_dynamic_aliases = true
+warn_untyped_fields = true
+
+[tool.pytest.ini_options]
+log_cli = false
+testpaths = [
+  "tests"
+]
+
+[tool.black]
+line-length = 88
+
+[tool.ruff]
+line-length = 88
+exclude = [
+    "nostr",
+]
+
+[tool.ruff.lint]
+select = ["F", "E", "W", "I", "A", "C", "N", "UP", "RUF", "B"]
+ignore = ["C901"]
+
+fixable = ["ALL"]
+unfixable = []
+
+dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
+
+[tool.ruff.lint.pep8-naming]
+classmethod-decorators = [
+    "validator",
+    "root_validator",
+]
+
+[tool.ruff.lint.flake8-bugbear]
+extend-immutable-calls = [
+    "fastapi.Depends",
+    "fastapi.Query",
+]