fix(ci): remove pytest-timeout, use per-file timeout only

fix(ci): write a new cache for test durations every time
change(ci): rip out error 4 retries because we found the real bug

pyproject.toml

@@ -131,7 +131,7 @@ edge-tts = ["edge-tts==7.2.7"]
 modal = ["modal==1.3.4"]
 daytona = ["daytona==0.155.0"]
 hindsight = ["hindsight-client==0.6.1"]
-dev = ["debugpy==1.8.20", "pytest==9.0.2", "pytest-asyncio==1.3.0", "pytest-timeout==2.4.0", "mcp==1.26.0", "starlette==1.0.1", "ty==0.0.21", "ruff==0.15.10", "setuptools==82.0.1"]  # starlette: CVE-2026-48710
+dev = ["debugpy==1.8.20", "pytest==9.0.2", "pytest-asyncio==1.3.0", "mcp==1.26.0", "starlette==1.0.1", "ty==0.0.21", "ruff==0.15.10", "setuptools==82.0.1"]  # starlette: CVE-2026-48710
 messaging = ["python-telegram-bot[webhooks]==22.6", "discord.py[voice]==2.7.1", "aiohttp==3.13.4", "brotlicffi==1.2.0.1", "slack-bolt==1.27.0", "slack-sdk==3.40.1", "qrcode==7.4.2"]  # aiohttp: CVE-2026-34513/34518/34519/34520/34525
 cron = []  # croniter is now a core dependency; this extra kept for back-compat
 slack = ["slack-bolt==1.27.0", "slack-sdk==3.40.1", "aiohttp==3.13.4"]
@@ -327,12 +327,8 @@ markers = [
     "integration: marks tests requiring external services (API keys, Modal, etc.)",
     "real_concurrent_gate: opt out of the autouse stub that disables _detect_concurrent_hermes_instances",
 ]
-# pytest-timeout: per-test 30s hard cap with cross-platform thread method.
-# This is the fallback inside each per-file pytest subprocess (see
-# scripts/run_tests_parallel.py). Per-file isolation gives every test
-# file a fresh Python interpreter; pytest-timeout catches Python-level
-# hangs within a file.
-addopts = "-m 'not integration' --timeout=30 --timeout-method=thread"
+# integration tests take way too long to run in the normal CI environments
+addopts = "-m 'not integration'"
 
 [tool.ty.environment]
 python-version = "3.13"