chore: import upstream snapshot with attribution

contributing/samples/adk_team/adk_stale_agent/settings.py

@@ -0,0 +1,63 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+
+from dotenv import load_dotenv
+
+# Load environment variables from a .env file for local testing
+load_dotenv(override=True)
+
+# --- GitHub API Configuration ---
+GITHUB_BASE_URL = "https://api.github.com"
+GITHUB_TOKEN = os.getenv("GITHUB_TOKEN")
+if not GITHUB_TOKEN:
+  raise ValueError("GITHUB_TOKEN environment variable not set")
+
+OWNER = os.getenv("OWNER", "google")
+REPO = os.getenv("REPO", "adk-python")
+LLM_MODEL_NAME = os.getenv("LLM_MODEL_NAME", "gemini-2.5-flash")
+
+STALE_LABEL_NAME = "stale"
+REQUEST_CLARIFICATION_LABEL = "request clarification"
+
+# --- THRESHOLDS IN HOURS ---
+# Default: 168 hours (7 days)
+# The number of hours of inactivity after a maintainer comment before an issue is marked as stale.
+STALE_HOURS_THRESHOLD = float(os.getenv("STALE_HOURS_THRESHOLD", 168))
+
+# Default: 168 hours (7 days)
+# The number of hours of inactivity after an issue is marked 'stale' before it is closed.
+CLOSE_HOURS_AFTER_STALE_THRESHOLD = float(
+    os.getenv("CLOSE_HOURS_AFTER_STALE_THRESHOLD", 168)
+)
+
+# --- Performance Configuration ---
+# The number of issues to process concurrently.
+# Higher values are faster but increase the immediate rate of API calls
+CONCURRENCY_LIMIT = int(os.getenv("CONCURRENCY_LIMIT", 3))
+
+# --- GraphQL Query Limits ---
+# The number of most recent comments to fetch for context analysis.
+GRAPHQL_COMMENT_LIMIT = int(os.getenv("GRAPHQL_COMMENT_LIMIT", 30))
+
+# The number of most recent description edits to fetch.
+GRAPHQL_EDIT_LIMIT = int(os.getenv("GRAPHQL_EDIT_LIMIT", 10))
+
+# The number of most recent timeline events (labels, renames, reopens) to fetch.
+GRAPHQL_TIMELINE_LIMIT = int(os.getenv("GRAPHQL_TIMELINE_LIMIT", 20))
+
+# --- Rate Limiting ---
+# Time in seconds to wait between processing chunks.
+SLEEP_BETWEEN_CHUNKS = float(os.getenv("SLEEP_BETWEEN_CHUNKS", 1.5))