feat: FastAPI app configuration

docker/.claude/settings.local.json

@@ -0,0 +1,9 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(.venv/Scripts/python -c \"import fastapi; print\\(fastapi.__version__\\)\")",
+      "Read(//c/Users/cgold/Desktop/polywatch/**)",
+      "Bash(gh pr create --title 'feat: FastAPI app configuration' --body ':*)"
+    ]
+  }
+}

files/LOG.md

@@ -24,3 +24,22 @@ Running record of work sessions. Newest at the top. Low ceremony — the point i
 ---
 
 <!-- Entries go below this line, newest first -->
+
+## 2026-04-11
+
+**Did:**
+- Initial repo scaffold — `pyproject.toml` with full dep stack, `.gitignore`, `.pre-commit-config.yaml`, Dockerfiles, Terraform stubs, scripts, ADRs (0000–0015), architecture/plan docs, and src skeleton
+- Added GitHub Actions workflows: `ci.yml` (lint → type-check → tests → docker build, security in parallel), `deploy-dev.yml` (push to Artifact Registry on merge to main), `deploy-prod.yml` (GCP deploy on semver tag with manual approval gate)
+- Added `src/polywatch/config.py` — `Settings` class via `pydantic-settings`; also added `ignore_missing_imports` to mypy config so pre-commit passes without all deps installed locally
+- Added Postgres service to `docker/docker-compose.yml`
+- Added `src/polywatch/api/main.py` — FastAPI app instance with `GET /` and `GET /health` endpoints (entry point for all future routes)
+- Added `src/polywatch/logger.py` — `structlog`-based `setup_logging()` and module-level `log` instance
+- Opened PR #3 (`feat/fastapi`) documenting that this branch is where FastAPI will be configured
+
+**Next:**
+- Define routers and route modules under `src/polywatch/api/routes/`
+- Wire up DB session dependency injection
+- Add middleware (CORS, request ID, OpenTelemetry tracing)
+- Implement lifespan events (startup/shutdown hooks)
+
+**Stuck on / questions:** —

src/polywatch/api/main.py

@@ -0,0 +1,13 @@
+from fastapi import FastAPI
+
+app = FastAPI()
+
+
+@app.get("/")  # type: ignore[misc]
+def read_root() -> dict[str, str]:
+    return {"Hello": "World"}
+
+
+@app.get("/health")  # type: ignore[misc]
+def read_health() -> dict[str, str]:
+    return {"status": "healthy"}

src/polywatch/logger.py

@@ -0,0 +1,21 @@
+import logging
+import sys
+
+import structlog
+
+
+def setup_logging(log_level: str = "INFO") -> None:
+    structlog.configure(
+        processors=[
+            structlog.contextvars.merge_contextvars,
+            structlog.processors.add_log_level,
+            structlog.processors.TimeStamper(fmt="iso"),
+            structlog.processors.JSONRenderer(),
+        ],
+        wrapper_class=structlog.make_filtering_bound_logger(logging.getLevelName(log_level)),
+        context_class=dict,
+        logger_factory=structlog.PrintLoggerFactory(sys.stdout),
+    )
+
+
+log = structlog.get_logger()