Python: replace pre-commit with prek, add PEP 723 script deps, clean up dev dependencies (#3748)

* python: replace pre-commit with prek, add PEP 723 script deps, clean up dev dependencies

- Replace pre-commit with prek (Rust-native, faster pre-commit alternative)
- Move supported hooks to repo: builtin for zero-clone speed
- Add new builtin hooks: trailing-whitespace, check-merge-conflict, detect-private-key, check-added-large-files
- Update all hook versions to latest (pre-commit-hooks v6, pyupgrade v3.21.2, bandit 1.9.3, uv-pre-commit 0.10.0)
- Add PEP 723 inline script metadata to 34 samples with external deps
- Remove autogen-agentchat/autogen-ext from dev deps (now declared per-sample)
- Remove unused dev deps: pytest-env, tomli-w
- Add agent-framework-core>=1.0.0b260130 lower bound to all 21 packages
- Update CI workflow to use j178/prek-action
- Update docs: DEV_SETUP.md, AGENTS.md, CODING_STANDARD.md, SAMPLE_GUIDELINES.md

* updated lock

* python: fix prek config paths for local execution and CI workflow

Remove global 'files: ^python/' filter and strip python/ prefix from all path patterns in .pre-commit-config.yaml so prek finds files when run from the python/ directory. Update CI workflow to use --cd python instead of --config path. Include trailing whitespace fixes and dev dependency cleanup.

* python: move helper scripts to scripts/ folder and exclude from checks

* python: exclude AGENTS.md from prek markdown code lint

* python: exclude AGENTS.md and azure_ai_search sample from markdown lint

* fix m365 sample

* python: ignore CPY rule for samples with PEP 723 headers

* fix in dev_setup

* python: replace aiofiles with regular open in samples

* python: suppress reportUnusedImport in markdown code block checker

* python: use samples pyright config for markdown code block checker

Write a temp pyrightconfig.json matching pyrightconfig.samples.json rules (typeCheckingMode=off, only reportMissingImports and reportAttributeAccessIssue). Filter output to only fail on these rules since syntax-level errors (top-level await, undefined vars) are expected in README documentation snippets.

* python: use markdown-code-lint with fixed globs instead of prek file list

The prek-markdown-code-lint task received all changed files including non-README markdown and files with pre-existing broken imports. Replace with the standard markdown-code-lint task which uses the correct glob patterns (README.md, packages/**/README.md, samples/**/*.md).

* python: exclude READMEs with pre-existing broken imports from markdown lint

* python: fix broken README code snippets instead of excluding them

- ag-ui: replace TextContent (removed) with content.type == 'text'
- durabletask: fix import path to durabletask.worker.TaskHubGrpcWorker
- orchestrations: use constructor params instead of .participants() method
- observability: mark deprecated code blocks as plain text, filter
  reportMissingImports to agent_framework modules only
- remove README excludes from markdown-code-lint task

* add revision to gaia download

* feat(python): parallelize checks across packages

Run (package × task) cross-product in parallel using ThreadPoolExecutor
and subprocesses. Key changes:

- Add scripts/task_runner.py with shared parallel execution engine
- Update run_tasks_in_packages_if_exists.py to accept multiple tasks
- Update run_tasks_in_changed_packages.py with --files flag and parallel support
- Add check-packages poe task (fmt+lint+pyright+mypy in parallel)
- Add prek-markdown-code-lint and prek-samples-check with change detection
- Split CI code quality workflow into parallel prek and mypy jobs
- Update DEV_SETUP.md to document new parallel behavior

Core package changes still trigger checks on all packages.

* feat(ci): split code quality into 4 parallel jobs

Split the single prek job into parallel jobs:
- pre-commit-hooks: lightweight hooks (SKIP=poe-check)
- package-checks: fmt/lint/pyright/mypy via check-packages
- samples-markdown: samples-lint, samples-syntax, markdown-code-lint
- mypy: change-detected mypy checks

All 4 jobs run concurrently (×2 Python versions = 8 runners).

* feat(ci): use only Python 3.10 for code quality checks

* refactor(python): add future annotations and remove quoted types

Add `from __future__ import annotations` to 93 package files that
used quoted string annotations, then run pyupgrade --py310-plus to
remove the now-unnecessary quotes.

Fixes https://github.com/microsoft/agent-framework/issues/3578

python/packages/lab/gaia/agent_framework_lab_gaia/gaia.py

@@ -371,6 +371,7 @@ class GAIA:
         local_dir = snapshot_download(  # type: ignore
             repo_id="gaia-benchmark/GAIA",
             repo_type="dataset",
+            revision="682dd723ee1e1697e00360edccf2366dc8418dd9",
             token=token,
             local_dir=str(self.data_dir),
             force_download=False,

python/packages/lab/lightning/samples/train_math_agent.py

@@ -8,6 +8,8 @@ using an MCP calculator tool.
 One GPU with 40GB of memory is sufficient for this sample.
 """
 
+from __future__ import annotations
+
 import argparse
 import asyncio
 import json

python/packages/lab/lightning/samples/train_tau2_agent.py

@@ -12,6 +12,8 @@ Builds on concepts from train_math_agent.py with additional complexity.
 Requires one GPU of at least 80GB of memory.
 """
 
+from __future__ import annotations
+
 import argparse
 import asyncio
 import json

python/packages/lab/pyproject.toml

@@ -22,7 +22,7 @@ classifiers = [
   "Programming Language :: Python :: 3.14",
 ]
 dependencies = [
-  "agent-framework-core",
+  "agent-framework-core>=1.0.0b260130",
 ]
 
 [project.optional-dependencies]
@@ -57,7 +57,6 @@ math = [
 [dependency-groups]
 dev = [
     "uv",
-    "pre-commit >= 3.7",
     "ruff>=0.11.8",
     "pytest>=8.4.1",
     "mypy>=1.16.1",
@@ -69,6 +68,7 @@ dev = [
     "tomli-w",
     # tau2 from source (not available on PyPI)
     "tau2@ git+https://github.com/sierra-research/tau2-bench@5ba9e3e56db57c5e4114bf7f901291f09b2c5619",
+    "prek>=0.3.2",
 ]
 
 [project.scripts]

python/packages/lab/tau2/agent_framework_lab_tau2/runner.py

@@ -1,5 +1,7 @@
 # Copyright (c) Microsoft. All rights reserved.
 
+from __future__ import annotations
+
 import uuid
 from typing import cast
 
@@ -90,7 +92,7 @@ class TaskRunner:
         self.max_steps = max_steps
         self.reinit()
 
-    def reinit(self) -> "TaskRunner":
+    def reinit(self) -> TaskRunner:
         """Reset all state for a new task run."""
         self.step_count = 0
         self.full_conversation = []