chore: add publish script and pypirc template

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

.pypirc.template

@@ -0,0 +1,8 @@
+[distutils]
+index-servers =
+    ergpt
+
+[ergpt]
+repository = https://git.infra.er-gpt.ru/api/packages/pypi
+username = __token__
+password = YOUR_FORGEJO_API_TOKEN_HERE

publish.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+set -e
+
+API_TOKEN="${FORGEJO_TOKEN:-$1}"
+
+if [ -z "$API_TOKEN" ]; then
+    echo "Usage: $0 <api_token>"
+    echo "Or set FORGEJO_TOKEN environment variable"
+    exit 1
+fi
+
+echo "Building package..."
+uv run python -m build
+
+echo "Publishing to forgejo..."
+uv run twine upload \
+    --repository-url https://git.infra.er-gpt.ru/api/packages/pypi \
+    --username __token__ \
+    --password "$API_TOKEN" \
+    dist/*
+
+echo "Done!"