Initial commit: router front-door vLLM stack

Three always-running vLLM services (text TP=2 GPU0+1, ocr + embed on GPU2,
sleep mode) behind a FastAPI router that auto-wakes models on request.
Tiered idle (sleep 15 min / offload 3 h), depth-aware 503s with
Retry-After, persisted wake-intent recovery, admin API on 127.0.0.1:8010.
Routine control via vllmctl is pure HTTP — no docker on the request path.

Verified: 91 router unit tests + 15-test E2E on real hardware
(measurements in CALIBRATION.md; design record in
.claude/memory/router-front-door-plan.md).

Old nginx stack files removed before git init; design survives in
.claude/memory/sleep-mode-implementation-plan.md.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,19 @@
+# secrets / local env — .env.example is the template
+.env
+.user.env
+
+# Claude local settings (memory/ is committed, settings are not)
+.claude/settings.local.json
+
+# ephemera
+*.bak
+*.log
+.idle.*
+router-data/
+GPU-report.local.txt
+
+# python
+__pycache__/
+*.pyc
+.pytest_cache/
+.venv/