* Fix event loop blocking in NLTK downloads and Azure model listing
Found via watchdog detecting 61.6s hang during file upload.
**Root causes:**
1. NLTK punkt_tab downloads blocking during file processing
2. Azure model listing using sync requests.get() in async context
**Fixes:**
1. Pre-download NLTK data at Docker build time
2. Async fallback download at startup if build failed
3. Move Azure model fetch to thread pool with asyncio.to_thread()
**Impact:**
- Eliminates 60+ second event loop hangs
- Startup: instant if data baked in, ~60s async if needs download
- Requests: never block, all I/O offloaded to threads
* Fix Docker build: ensure /root/nltk_data exists even if download fails
- Create directory before download attempt
- Add verification step to confirm download success
- Directory always exists so COPY won't fail in runtime stage
* Fix: use venv python for NLTK download in Docker build
The builder stage installs NLTK in /app/.venv but we were using
system python which doesn't have NLTK. Now using venv python so
download actually works.
* Use uv run for NLTK download (more idiomatic)
uv run automatically uses the synced venv, cleaner than hardcoding
the venv path.
* Add lightweight event loop watchdog monitoring
- Thread-based watchdog detects event loop hangs >15s
- Runs independently, won't interfere with normal operation
- Disabled in test environments
- Minimal overhead, just heartbeat checks every 5s
* actually test it
* Add test script to validate watchdog detects hangs
Run with: uv run python test_watchdog_hang.py
Tests:
- Normal operation (no false positives)
- Short blocks under threshold (no alerts)
- Long blocks over threshold (correctly alerts)
* add memory tracking to core
* move to asyncio from threading.Thread
* remove threading.thread all the way
* delay decorator monitoring initialization until after event loop is registered
* context manager to decorator
* add psutil
* change my PR to match Caren's
* add path parameter validation for agent id first
* remove old import
* remove old agent_id_pattern pattern
* add example and fix max/min calculation to include hyphen
* fix regex string interpolation
* example deprecated in favour of examples
* openapi autogen
* change template test to expect 422
* fix 422 swallow
* expect 422 or 400
* rewrite error codes
* fix hallucinated uuid
* tweaked error message test
* print docker logs on failure
* patch integration test
* create default user and org
* rm
* patch
* add testing
* remove validation for schemas from pydantic object
* add file
* patch tests
* fix more tests
* fix managers
* fix sdk test
* patch schema tests
* Comment out name in update
* patch test
* patch
* add another test
* remove apps/core and apps/fern
* fix precommit
* add submodule updates in workflows
* submodule
* remove core tests
* update core revision
* Add submodules: true to all GitHub workflows
- Ensure all workflows can access git submodules
- Add submodules support to deployment, test, and CI workflows
- Fix YAML syntax issues in workflow files
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
* remove core-lint
* upgrade core with latest main of oss
---------
Co-authored-by: Claude <noreply@anthropic.com>
* feat: add approval create input to messages endpoints
* rename discriminator tag
* add base class with default
* add field validator
* exclude new type field from agent file schema
* base requirements
* autofix
* Configure ruff for Python linting and formatting
- Set up minimal ruff configuration with basic checks (E, W, F, I)
- Add temporary ignores for common issues during migration
- Configure pre-commit hooks to use ruff with pass_filenames
- This enables gradual migration from black to ruff
* Delete sdj
* autofixed only
* migrate lint action
* more autofixed
* more fixes
* change precommit
* try changing the hook
* try this stuff
