# Session 015 -- Integration Tests, Tunnel, ModernBERT, PyPI Verified

## Date: 2026-02-15 03:30 UTC

## Summary
Built 3 major features + full test suite in one session. All 103 tests passing. PyPI package builds and installs clean.

## Commits This Session
| Commit | Description | Files Changed | Lines Added |
|--------|-------------|---------------|-------------|
| `f0c9467` | tunnel + ModernBERT + 103 integration tests | 22 | +3,713 |

## Features Built

### 1. Integration Test Suite (103 tests)
| File | Tests | Coverage Area |
|------|-------|---------------|
| `test_health.py` | 4 | /health endpoint |
| `test_models.py` | 4 | /v1/models OpenAI format |
| `test_chat_completions.py` | 8 | OpenAI proxy validation |
| `test_anthropic.py` | 8 | Anthropic proxy validation |
| `test_dashboard_api.py` | 13 | All dashboard endpoints + HTML |
| `test_config.py` | 12 | TOML config + env overrides |
| `test_keys.py` | 14 | BYOK encryption lifecycle |
| `test_cache.py` | 12 | Exact hash cache operations |
| `test_router.py` | 16 | Router + aliases + cost tracking |
| `test_cli.py` | 7 | CLI commands via CliRunner |

### 2. llmhosts tunnel (Phase 2 kickoff)
- `llmhosts/tunnel/` -- 7 files, complete Tailscale/Cloudflare auto-detect
- CLI: `llmhosts tunnel start/status/stop` with Rich output
- TunnelAuth with secure API key generation + storage
- Beautiful UX: URL display, client config instructions, graceful Ctrl+C

### 3. ModernBERT Tier 2 Router
- `llmhosts/router/modernbert.py` -- 1,080 lines
- Full heuristic classifier (works WITHOUT ONNX model)
- 4-head classification: complexity(5), domain(7), quality(4), tier(5)
- 10 compiled regex patterns, 180+ domain keywords
- Model mapping: 5x7 complexity/domain matrix

### 4. PyPI Package Verified
- `python -m build` succeeds (258KB wheel, 569KB sdist)
- `twine check` passes
- `llmhosts --version` works from installed wheel
- `python -m llmhosts --version` works
- Tier detection: correctly reports "core" without ML deps

## Bug Fixes
- `llmhosts/router/modernbert.py`: Moved `onnxruntime` import inside try/except guard (was at module level, crashing core tier)
- `llmhosts/proxy/dashboard_routes.py`: Moved `Request` import to runtime scope (was in TYPE_CHECKING, causing 422 on all /api/* endpoints)

## Codebase Size
| Metric | Count |
|--------|-------|
| Python source files | 79 |
| Python source lines | 19,430 |
| Test files | 11 |
| Test lines | 1,485 |
| Total files | 92 |
| Test count | 103 |
| Package wheel size | 258KB |

## Architecture (Post Session)
```
llmhost/
├── proxy/           # FastAPI proxy (OpenAI + Anthropic + dashboard + transparency)
├── router/          # Tier 0: rules, Tier 1: kNN, Tier 2: ModernBERT, aliases, fallback, latency
├── cache/           # Tier 0: exact, Tier 1: namespace, Tier 2: vCache, manager
├── embeddings/      # ONNX MiniLM pipeline + FAISS store
├── tunnel/          # [NEW] Tailscale/Cloudflare auto-detect tunnel
├── discovery/       # Ollama + hardware + model suggestions
├── keys/            # BYOK encrypted storage
├── backends/        # LiteLLM + Ollama backend manager
├── dashboard/       # TUI (Textual) + Web (static HTML)
├── health/          # Backend health monitoring
├── audit/           # SQLite audit logging
├── metrics/         # Metrics + Prometheus/JSON/CSV export
├── context/         # Multi-turn conversation tracking
├── hybrid/          # Cloud-first hybrid startup
├── onboarding/      # First-run experience
├── cli.py           # serve, tunnel, keys, doctor, suggest-models, setup
├── config.py, server.py, doctor.py, tier.py, banner.py, version.py
tests/
├── conftest.py      # ASGI transport fixtures
├── 11 test files    # 103 tests, all passing
```

## What's Next
1. **TestPyPI publish** -- needs PyPI token (deferred item?)
2. **Phase 2 continued**: multi-device mesh, tunnel auth middleware in proxy
3. **Qwen Tier 3 router** -- full tier model reasoning (Phase 4 scope)
4. **README polish** -- install instructions, quickstart, badges
5. **SEC-010/011** -- still blocked by GitHub flag
