Python: Docs: Broken external links in Python samples and docs (11 dead URLs)

[Shxiao101]

A link check across the repo found 11 dead external URLs (12 occurrences) in 3 files. Each was verified with HTTP requests (404) and each suggested replacement was verified live (200):

#	File	Dead URL	Working replacement
1	python/samples/04-hosting/foundry-hosted-agents/responses/foundry_toolbox/README.md L7, L226	Azure/azure-sdk-for-python/blob/main/sdk/ai/azure-ai-projects/samples/hosted_agents/sample_toolboxes_crud.py	same repo, samples/toolboxes/sample_toolboxes_crud.py (samples were reorganized)
2	same file L24	microsoft-foundry/foundry-samples/.../SUPPORTED_TOOLBOX_SCENARIOS.md#5-mcp-no-auth	.../SUPPORTED_TOOLBOX_SCENARIOS/tools/mcp-unauthenticated.md
3	same file L25	...#4-mcp-key-auth-github	.../tools/mcp-key-auth.md
4	same file L26	...#6-mcp-oauth-managed-connector	.../tools/mcp-oauth-managed.md
5	same file L27	...#8-mcp-agent-identity	.../tools/mcp-microsoft-entra.md
6	same file L28	...#13-mcp-oauth-entra-passthrough	.../tools/mcp-user-entra-token.md
7	same file L30	.../SUPPORTED_TOOLBOX_SCENARIOS.md (plain)	.../SUPPORTED_TOOLBOX_SCENARIOS/README.md
8	same file L134	microsoft/GitHub-Copilot-for-Azure/blob/main/plugin/skills/.../toolbox-reference.md	.../plugins/azure-skills/skills/microsoft-foundry/foundry-agent/toolbox/toolbox.md (skill tree reorganized; covers endpoint format & MCP protocol)
9	same file L135	.../plugin/skills/.../use-toolbox-in-hosted-agent.md	.../plugins/azure-skills/skills/.../create/references/use-toolbox-in-hosted-agent.md
10	python/packages/chatkit/README.md L5	openai/chatkit-python/blob/main/docs/server.md#agents-sdk-integration	.../docs/quickstart.md#generate-model-responses (docs restructured; same Agents SDK helpers incl. stream_agent_response)
11	docs/decisions/0033-feature-usage-bitmask-user-agent.md L535	googleapis/python-api-core/blob/main/google/api_core/client_info.py	googleapis/google-cloud-python/blob/main/packages/google-api-core/google/api_core/client_info.py (package moved into the monorepo)

Notes:

• SUPPORTED_TOOLBOX_SCENARIOS.md became a directory of per-scenario guides; the five anchors above map 1:1 to the new guide files (MCP no-auth / key-auth / managed OAuth / agent identity / Entra user-token pass-through).
• python/CHANGELOG.md also references PR Python: fix(workflows): preserve all trace contexts in FanInEdgeRunner aggregation #7557, which does not exist in this repo (likely a wrong number); I could not identify the correct PR, so it is left out of scope.

Happy to send a PR fixing all of these.