feat(phase-2): workstream 2 — Python SDK (sentryagent-idp)

Sync (requests) and async (httpx) clients with identical API surface
to the Node.js SDK.

Delivered:
- pyproject.toml — python>=3.9, hatchling build, mypy strict config
- types.py — all 14-endpoint request/response dataclasses
- errors.py — AgentIdPError with from_api_error, from_oauth2_error, network_error
- token_manager.py — thread-safe sync TokenManager, 60s refresh buffer
- async_token_manager.py — asyncio-safe AsyncTokenManager (httpx)
- _request.py — shared sync/async request helper (DRY)
- services/agents.py — AgentRegistryClient + AsyncAgentRegistryClient (5 methods each)
- services/credentials.py — CredentialClient + AsyncCredentialClient (4 methods each)
- services/token.py — TokenClient + AsyncTokenClient (introspect + revoke)
- services/audit.py — AuditClient + AsyncAuditClient (query + get)
- client.py — AgentIdPClient + AsyncAgentIdPClient
- __init__.py — barrel exports
- README.md — installation, quick start, full API reference

QA gates:
- mypy --strict: 0 errors (12 source files)
- pytest: 57/57 passed
- Coverage: 90.83% (required >= 80%)
- All 14 endpoints covered (sync + async)
- AgentIdPError raised on all failure paths

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

sdk-python/pyproject.toml

@@ -0,0 +1,61 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "sentryagent-idp"
+version = "1.0.0"
+description = "Python SDK for the SentryAgent.ai AgentIdP — Identity Provider for AI agents"
+readme = "README.md"
+license = { text = "Apache-2.0" }
+requires-python = ">=3.9"
+keywords = ["ai", "agents", "identity", "oauth2", "agntcy"]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: Apache Software License",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Internet :: WWW/HTTP",
+    "Topic :: Security",
+    "Typing :: Typed",
+]
+dependencies = [
+    "requests>=2.28.0",
+    "httpx>=0.25.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "mypy>=1.8.0",
+    "pytest>=7.4.0",
+    "pytest-asyncio>=0.23.0",
+    "pytest-cov>=4.1.0",
+    "respx>=0.20.0",
+    "responses>=0.24.0",
+    "types-requests>=2.31.0",
+]
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/sentryagent_idp"]
+
+[tool.mypy]
+strict = true
+python_version = "3.9"
+warn_return_any = true
+warn_unused_configs = true
+disallow_untyped_defs = true
+disallow_incomplete_defs = true
+check_untyped_defs = true
+disallow_any_generics = true
+no_implicit_optional = true
+warn_redundant_casts = true
+warn_unused_ignores = true
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]
+addopts = "--cov=src/sentryagent_idp --cov-report=term-missing --cov-fail-under=80"