Commit Graph

15 Commits

  • Python: [BREAKING] update context provider APIs, middleware, and per-service-call history persistence (#4992)
    * Rename provider base APIs
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Allow provider-added chat and function middleware
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Simulate service-stored history per model call
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix typing regressions in CI
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix response ID suppression review feedback
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Rename per-service-call history persistence APIs
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Address context persistence review feedback
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Stabilize markdown sample docs
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Persist service continuation state per call
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Python: [BREAKING] Remove deprecated Python OpenAI/Azure AI surfaces (#4990)
    * [BREAKING] Remove deprecated Python OpenAI/Azure AI surfaces
    
    Also clean up follow-on docs, environment guidance, package metadata, and lab test stability.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix deleted semantic-kernel sample links
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Address PR review feedback
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * improve foundry language
    
    * Fix A2A Foundry sample regression
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Python: Fix samples (#4980)
    * First samples 1st batch
    
    * Fix sample paths
    
    * Fix workflow samples
    
    * Fix workflow dependency
    
    * Correct env vars
    
    * Increase idle timeout
    
    * Fix workflows HIL sample
    
    * Fix more workflow samples
  • Python: [BREAKING] Python: Provider-leading client design & OpenAI package extraction (#4818)
    * Python: Provider-leading client design & OpenAI package extraction
    
    Major refactoring of the Python Agent Framework client architecture:
    
    - Extract OpenAI clients into new `agent-framework-openai` package
    - Core package no longer depends on openai, azure-identity, azure-ai-projects
    - Rename clients for discoverability: OpenAIResponsesClient → OpenAIChatClient,
      OpenAIChatClient → OpenAIChatCompletionClient
    - Unify `model_id`/`deployment_name`/`model_deployment_name` → `model` param
    - New FoundryChatClient for Azure AI Foundry Responses API
    - New FoundryAgent/FoundryAgentClient for connecting to pre-configured Foundry agents
    - Remove OpenAIBase/OpenAIConfigMixin from non-deprecated client MRO
    - Deprecate AzureOpenAI* clients, AzureAIClient, OpenAIAssistantsClient
    - Reorganize samples: azure_openai+azure_ai+azure_ai_agent → azure/
    - ADR-0020: Provider-Leading Client Design
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * fix: missing Agent imports in samples, .model_id → .model in foundry_local sample
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * fix: CI failures — mypy errors, coverage targets, sample imports
    
    - azure-ai mypy: add type ignores for TypedDict total=, model arg, forward ref
    - Coverage: replace core.azure/openai targets with openai package target
    - project_provider: add type annotation for opts dict
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * fix: populate openai .pyi stub, fix broken README links, coverage targets
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * fixes
    
    * updated observabilitty
    
    * reset azure init.pyi
    
    * fix errors
    
    * updated adr number
    
    * fix foundry local
    
    * fixed not renamed docstrings and comments, and added deprecated markers to old classes
    
    * fix tests and pyprojects
    
    * fix test vars
    
    * updated function tests
    
    * update durable
    
    * updated test setup for functions
    
    * Fix Foundry auth in workflow samples
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Stabilize Python integration workflows
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Update hosting samples for Foundry
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Trigger full CI rerun
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Trigger CI rerun again
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * trigger rerun
    
    * trigger rerun
    
    * fix for litellm
    
    * undo durabletask changes
    
    * Move Foundry APIs into foundry namespace
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix Foundry pyproject formatting
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Split provider samples by Foundry surface
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Restore hosting sample requirements
    
    Also fix the Foundry Local sample link after the provider sample move.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * updated tests
    
    * udpated foundry integration tests
    
    * removed dist from azurefunctions tests
    
    * Use separate Foundry clients for concurrent agents
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * fix client setup in azfunc and durable
    
    * disabled two tests
    
    * updated setup for some function and durable tests
    
    * improved azure openai setup with new clients
    
    * ignore deprecated
    
    * fixes
    
    * skip 11
    
    * remove openai assistants int tests
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Auto-finalize ResponseStream on iteration completion (#4478)
    * Add multi-turn streaming sample and rename multi-turn samples
    
    - Rename 03_multi_turn.py to 03a_multi_turn.py
    - Add 03b_multi_turn_streaming.py showing streaming with session history
    - The new sample demonstrates calling get_final_response() after
      iterating the stream to persist conversation history
    - Update READMEs to reflect the new file names
    
    Closes #4447
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Auto-finalize ResponseStream on iteration completion
    
    When a ResponseStream is fully consumed via async iteration,
    automatically trigger finalization (finalizer + result hooks).
    This ensures session history is persisted in streaming multi-turn
    conversations without requiring an explicit get_final_response() call.
    
    - Add auto-finalize call in __anext__ on StopAsyncIteration
    - Guard inner stream finalization to prevent double-execution
    - Re-check _finalized after iteration in get_final_response()
    - Add tests for auto-finalization and streaming session history
    - Revert sample file renames from previous commit
    
    Closes #4447
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * README fix
    
    * Fix SIM102 lint: combine nested if statements
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Python: Automate sample validation (#4193)
    * Automate sample validation: part 1
    
    * Automate sample validation: part 2
    
    * Create GH workflow
    
    * comments
    
    * Fix mypy
  • Python: Add max_function_calls to FunctionInvocationConfiguration (#2329) (#4175)
    * Add max_function_calls to FunctionInvocationConfiguration (#2329)
    
    Add a new per-request max_function_calls setting to FunctionInvocationConfiguration
    that limits the total number of individual function invocations across all iterations
    within a single get_response call. This complements max_iterations (which limits LLM
    roundtrips) by providing a hard cap on actual tool executions regardless of parallelism.
    
    - Add max_function_calls field to FunctionInvocationConfiguration (default: None/unlimited)
    - Track cumulative function call count in both streaming and non-streaming tool loops
    - Force tool_choice='none' when the limit is reached
    - Add validation in normalize_function_invocation_configuration
    - Improve docstrings for FunctionInvocationConfiguration, FunctionTool, and @tool
      to clarify semantics of max_iterations vs max_function_calls vs max_invocations
    - Add tests for parallel calls, single calls, unlimited mode, and config validation
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Add sample for controlling total tool executions
    
    Showcases all three mechanisms for limiting tool executions:
    1. max_iterations — caps LLM roundtrips
    2. max_function_calls — caps total individual function invocations per request
    3. max_invocations — lifetime cap on a specific tool instance
    Plus a combined scenario demonstrating defense in depth.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Suppress ruff E305/fmt in hosting sample to preserve XML doc tags
    
    The XML snippet tags (# <create_agent> / # </create_agent>) are used for
    docs extraction and must stay adjacent to the code they wrap. Both ruff
    check (E305) and ruff format add blank lines after the function definition,
    pushing the closing tag away. Suppress with ruff: noqa: E305 and fmt: off.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Add per-agent tool wrapping scenario to control_total_tool_executions sample
    
    Show that wrapping the same callable with @tool multiple times creates
    independent FunctionTool instances with separate invocation counters,
    enabling per-agent max_invocations budgets for shared functions.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Clarify max_function_calls is a best-effort limit
    
    The limit is checked after each batch of parallel calls completes, so the
    current batch always runs to completion even if it overshoots the limit.
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Address PR review: fix docstring reference, clarify best-effort in sample
    
    - Fix malformed Sphinx :attr: role in FunctionTool docstring — use plain
      backtick reference instead
    - Update sample to say 'best-effort cap' instead of 'hard cap' for
      max_function_calls, noting it's checked between iterations
    - Parametrize pattern is correct (fixture override, matching existing tests)
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * clarify max_invocations limits
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Python: (ag-ui): Add Workflow Support, Harden Streaming Semantics, and add Dynamic Handoff Demo (#3911)
    * fix Workflow.as_agent() streaming regression in ag-ui
    
    * Address PR feedback
    
    * workflows wip
    
    * wip
    
    * wip
    
    * Workflow AG-UI demo
    
    * Fixes for handoff workflow demo
    
    * Fixes to workflows support in AG-UI
    
    * Fixes
    
    * Add headers to some demo files
    
    * Fix comment
    
    * Fixes for store
    
    * Make _input_schema lazy-loaded
    
    * fix mypy
    
    * revert session change to handoff only for now
    
    ---------
    
    Co-authored-by: Eduard van Valkenburg <eavanvalkenburg@users.noreply.github.com>
  • Simplify memory sample to use session state (#4085)
    - Rename UserNameProvider → UserMemoryProvider
    - Use session state (state dict) instead of instance variables
    - Use context.extend_instructions() instead of context.instructions.append()
    - Use DEFAULT_SOURCE_ID class attribute
    - Fix imports to use public agent_framework API
    - Add session state inspection at end of sample
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Python: Add load_dotenv() to samples for .env file support (#4043)
    * Initial plan
    
    * Add load_dotenv() to 303 Python samples for environment variable loading
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Update SAMPLE_GUIDELINES.md to document load_dotenv() requirement
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Update samples README.md to document .env file usage
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Run ruff format on all changed sample files
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Clarify load_dotenv() usage in README - local dev vs production
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Remove deprecated getting_started folder as requested
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Document env_file_path parameter for per-client configuration
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Merge main branch to resolve conflicts
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Fix run_evaluation.py file that was empty in merge commit
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Remove dotnet changes from merge - out of scope for this PR
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Remove package and test changes from merge - only sample changes needed
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Remove test_func_utils.py - only sample changes needed
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Revert sample files not in original changeset - keep only load_dotenv additions
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Move load_dotenv() outside snippet tag in 06_host_your_agent.py
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Fix comment placement - move load_dotenv before code comments
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Fix load_dotenv() placement across all samples - after docstring, before code comments
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Merge latest main branch with load_dotenv changes
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Remove non-sample changes from merge - keep only load_dotenv additions
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Revert non-load_dotenv sample changes from merge
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Fix run_evaluation.py - use main's improved version (file already had load_dotenv)
    
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    
    * Manual update
    
    * Manual update 2
    
    * Fix Role usage and load_dotenv placement per PR review feedback
    
    Co-authored-by: eavanvalkenburg <13749212+eavanvalkenburg@users.noreply.github.com>
    
    * Fix Role usage - use string literals not enum attributes
    
    Co-authored-by: eavanvalkenburg <13749212+eavanvalkenburg@users.noreply.github.com>
    
    * Fix SAMPLE_GUIDELINES.md example - load_dotenv before docstring per guidance
    
    Co-authored-by: eavanvalkenburg <13749212+eavanvalkenburg@users.noreply.github.com>
    
    * Move load_dotenv() before docstrings in all samples per SAMPLE_GUIDELINES ordering
    
    Co-authored-by: eavanvalkenburg <13749212+eavanvalkenburg@users.noreply.github.com>
    
    * Address PR review: rename files, fix placement, add session usage, remove note
    
    Co-authored-by: eavanvalkenburg <13749212+eavanvalkenburg@users.noreply.github.com>
    
    * Update Redis README to reference renamed file redis_history_provider.py
    
    Co-authored-by: eavanvalkenburg <13749212+eavanvalkenburg@users.noreply.github.com>
    
    ---------
    
    Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
    Co-authored-by: TaoChenOSU <12570346+TaoChenOSU@users.noreply.github.com>
    Co-authored-by: Tao Chen <taochen@microsoft.com>
    Co-authored-by: eavanvalkenburg <13749212+eavanvalkenburg@users.noreply.github.com>
    Co-authored-by: Eduard van Valkenburg <eavanvalkenburg@users.noreply.github.com>
  • Python: Fix tool normalization and provider sample consolidation (#3953)
    * Fix tool normalization and provider samples
    
    - restore callable/single-tool normalization paths and unset tool-choice behavior\n- consolidate and expand chat/provider samples (OpenAI/Azure/Anthropic/Ollama/Bedrock)\n- migrate Bedrock lazy import surface to agent_framework.amazon and move provider samples
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * small fix in sample
    
    * Finalize provider, samples, and core cleanup
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * Fix CopilotTool passthrough in agent
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
    
    * fix link
    
    ---------
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Python: [BREAKING] PR2 — Wire context provider pipeline, remove old types, update all consumers (#3850)
    * PR2: Wire context provider pipeline and update all internal consumers
    
    - Replace AgentThread with AgentSession across all packages
    - Replace ContextProvider with BaseContextProvider across all packages
    - Replace context_provider param with context_providers (Sequence)
    - Replace thread= with session= in run() signatures
    - Replace get_new_thread() with create_session()
    - Add get_session(service_session_id) to agent interface
    - DurableAgentThread -> DurableAgentSession
    - Remove _notify_thread_of_new_messages from WorkflowAgent
    - Wire before_run/after_run context provider pipeline in RawAgent
    - Auto-inject InMemoryHistoryProvider when no providers configured
    
    * fix: update all tests for context provider pipeline, fix lazy-loaders, remove old test files
    
    * refactor: update all sample files for context provider pipeline (AgentThread→AgentSession, ContextProvider→BaseContextProvider)
    
    * fix: update remaining ag-ui references (client docstring, getting_started sample)
    
    * fix: make get_session service_session_id keyword-only to avoid confusion with session_id
    
    * refactor: rename _RunContext.thread_messages to session_messages
    
    * refactor: remove _threads.py, _memory.py, and old provider files; migrate devui to use plain message lists
    
    * rename: remove _new_ prefix from test files
    
    * refactor: rewrite SlidingWindowChatMessageStore as SlidingWindowHistoryProvider(InMemoryHistoryProvider)
    
    * fix: read full history from session state directly instead of reaching into provider internals
    
    * fix: update stale .pyi stubs, sample imports, and README references for new provider types
    
    * fix: remove stale message_store, _notify_thread_of_new_messages, and session_id.key references in samples
    
    * refactor: merge context_providers and sessions sample folders into sessions, remove aggregate_context_provider
    
    * refactor: UserInfoMemory stores state in session.state instead of instance attributes
    
    * feat: add Pydantic BaseModel support to session state serialization
    
    Pydantic models stored in session.state are now automatically serialized
    via model_dump() and restored via model_validate() during to_dict()/from_dict()
    round-trips. Models are auto-registered on first serialization; use
    register_state_type() for cold-start deserialization.
    
    Also export register_state_type as a public API.
    
    * fix mem0
    
    * Update sample README links and descriptions for session terminology
    
    - Replace 'thread' with 'session' in sample descriptions across all READMEs
    - Update file links for renamed samples (mem0_sessions, redis_sessions, etc.)
    - Fix Threads section → Sessions section in main samples/README.md
    - Update tools, middleware, workflows, durabletask, azure_functions READMEs
    - Update architecture diagrams in concepts/tools/README.md
    - Update migration guides (autogen, semantic-kernel)
    
    * Fix broken Redis README link to renamed sample
    
    * Fix Mem0 OSS client search: pass scoping params as direct kwargs
    
    AsyncMemory (OSS) expects user_id/agent_id/run_id as direct kwargs,
    while AsyncMemoryClient (Platform) expects them in a filters dict.
    Adds tests for both client types.
    
    Port of fix from #3844 to new Mem0ContextProvider.
    
    * Fix rebase issues: restore missing _conversation_state.py and checkpoint decode logic
    
    - Add back _conversation_state.py (encode/decode_chat_messages) lost in rebase
    - Fix on_checkpoint_restore to decode cache/conversation with decode_chat_messages
    - Fix on_checkpoint_restore to use decode_checkpoint_value for pending requests
    - Add tests/workflow/__init__.py for relative import support
    - Fix test_agent_executor checkpoint selection (checkpoints[1] not superstep)
    
    * Add STORES_BY_DEFAULT ClassVar to skip redundant InMemoryHistoryProvider injection
    
    Chat clients that store history server-side by default (OpenAI Responses API,
    Azure AI Agent) now declare STORES_BY_DEFAULT = True. The agent checks this
    during auto-injection and skips InMemoryHistoryProvider unless the user
    explicitly sets store=False.
    
    * Fix broken markdown links in azure_ai and redis READMEs
    
    * Fix getting-started samples to use session API instead of removed thread/ContextProvider API
    
    * updates to workflow as agent
    
    * fix group chat import
    
    * Rename Thread→Session throughout, fix service_session_id propagation, remove stale AGUIThread
    
    - Fix: Propagate conversation_id from ChatResponse back to session.service_session_id
      in both streaming and non-streaming paths in _agents.py
    - Rename AgentThreadException → AgentSessionException
    - Remove stale AGUIThread from ag_ui lazy-loader
    - Rename use_service_thread → use_service_session in ag-ui package
    - Rename test functions from *_thread_* to *_session_*
    - Rename sample files from *_thread* to *_session*
    - Update docstrings and comments: thread → session
    - Update _mcp.py kwargs filter: add 'session' alongside 'thread'
    - Fix ContinuationToken docstring example: thread=thread → session=session
    - Fix _clients.py docstring: 'Agent threads' → 'Agent sessions'
    
    * Fix broken markdown links after thread→session file renames
    
    * fix azure ai test
  • Python: restructure: Python samples into progressive 01-05 layout (#3862)
    * restructure: Python samples into progressive 01-05 layout
    
    - 01-get-started/: 6 numbered steps (hello agent → hosting)
    - 02-agents/: all agent concept samples (tools, middleware, providers, etc.)
    - 03-workflows/: ALL existing workflow samples preserved as-is
    - 04-hosting/: azure-functions, durabletask, a2a
    - 05-end-to-end/: demos, evaluation, hosted agents
    - Old files moved to _to_delete/ for review
    - Added AGENTS.md with structure documentation
    - autogen-migration/ and semantic-kernel-migration/ preserved at root
    
    * fix: switch to AzureOpenAI Foundry, fix CI failures
    
    - Switch all 01-get-started samples to AzureOpenAIResponsesClient with
      Azure AI Foundry project endpoint (AZURE_AI_PROJECT_ENDPOINT +
      AZURE_OPENAI_RESPONSES_DEPLOYMENT_NAME + AzureCliCredential)
    - Add _to_delete/ and 05-end-to-end/ to pyrightconfig.samples.json excludes
    - Fix test paths in packages/ that referenced old getting_started/ dirs:
      durabletask conftest + streaming test, azurefunctions conftest,
      devui conftest + capture_messages + openai_sdk_integration
    - Fix workflow_as_agent_human_in_the_loop.py import (sibling import)
    - Update hosting READMEs and tool comment paths
    - Replace root README.md with new structure overview
    - Update AGENTS.md to document Azure OpenAI Foundry as default provider
    
    * cleanup: remove _to_delete folder, copy resource files to active dirs
    
    All files in _to_delete/ were either:
    - Exact duplicates of files in the new structure (240 files)
    - Same file with only comment path updates (100 files)
    - One import-fix diff (workflow_as_agent_human_in_the_loop.py)
    - One superseded minimal_sample.py
    
    Resource files (sample.pdf, countries.json, employees.pdf, weather.json)
    copied to 02-agents/sample_assets/ and 02-agents/resources/ since active
    samples reference them.
    
    * fix: address PR review comments, centralize resources, remove root duplicates
    
    - Fix type annotation in 04_memory.py (string union -> proper types)
    - Fix old sample paths in observability files
    - Fix grammar/spelling in observability samples
    - Move sample_assets/ and resources/ to shared/ folder
    - Remove 8 duplicate observability files from 02-agents root
    - Update resource path references in multimodal_input and provider samples
    
    * fix: update broken links from old getting_started paths to new structure
    
    - Update relative paths in READMEs: getting_started/ → 01-get-started/,
      02-agents/, 03-workflows/, 04-hosting/, 05-end-to-end/
    - Fix absolute GitHub URLs in package READMEs
    - Fix broken link in ollama package README
    
    * fix: convert absolute GitHub URLs to relative paths for link checker
    
    Absolute URLs to python/samples/ on main branch 404 until PR merges.
    Converted to relative paths that linkspector can verify locally.
    
    * fix: update link for handoff sample moved to orchestrations/
    
    * fix: update chatkit-integration README path from demos/ to 05-end-to-end/
    
    * fix: update broken links in orchestrations README to match flat directory structure