chore: remove dead uv-init scaffolding (pyproject/uv.lock/.python-version)

These were the remaining `uv init` residue alongside the already-removed
main.py stub — not part of the build/deploy path. Also drops the now-stale
'leftover uv-init artifacts' note from README.md since the files are gone.

.python-version

@@ -1 +0,0 @@
-3.12

README.md

@@ -96,6 +96,3 @@ state you're running:
 - **Don't commit `.env`.** Contains real PBS integration credentials
   (Portainer API key, Google Chat webhook, healer webhook). The
   `.gitignore` already excludes it; keep it that way.
-- The repo also contains some leftover uv-init artifacts (`main.py`,
-  `pyproject.toml`, `uv.lock`, `.python-version`). These are not part
-  of the deployment.

pyproject.toml

@@ -1,7 +0,0 @@
-[project]
-name = "n8n"
-version = "0.1.0"
-description = "Add your description here"
-readme = "README.md"
-requires-python = ">=3.12"
-dependencies = []

uv.lock

@@ -1,8 +0,0 @@
-version = 1
-revision = 3
-requires-python = ">=3.12"
-
-[[package]]
-name = "n8n"
-version = "0.1.0"
-source = { virtual = "." }