docs: apply fleet-template (16-artifact scaffold)

Adds missing standard artifacts:
- README.md (if missing)
- AGENTS.md (AI agent contract)
- PLAN.md (current sprint)
- STATUS.md (where we are)
- DEVELOPMENT.md (dev workflow)
- DEPLOYMENT.md (deploy procedure)
- TESTING.md (test strategy)
- DECISIONS.md (ADR index + templates)
- .github/CODEOWNERS
- .github/workflows/ci.yml

Preserves all existing artifacts.

Refs: RugMunchMedia/fleet-template

client.py

@@ -0,0 +1,43 @@
+"""Pry — shared httpx client pool with connection reuse.
+All modules import `http_client` instead of creating new clients per request."""
+
+import logging
+
+import httpx
+
+logger = logging.getLogger(__name__)
+
+_default_limits = httpx.Limits(
+    max_connections=100,
+    max_keepalive_connections=20,
+    keepalive_expiry=30,
+)
+
+_default_timeout = httpx.Timeout(
+    connect=10.0,
+    read=60.0,
+    write=30.0,
+    pool=10.0,
+)
+
+http_client: httpx.AsyncClient | None = None
+
+
+async def get_client() -> httpx.AsyncClient:
+    """Get or create the shared httpx client."""
+    global http_client
+    if http_client is None or http_client.is_closed:
+        http_client = httpx.AsyncClient(
+            timeout=_default_timeout,
+            limits=_default_limits,
+            headers={"User-Agent": "pry/3.0"},
+        )
+    return http_client
+
+
+async def close_client() -> None:
+    """Close the shared client on shutdown."""
+    global http_client
+    if http_client and not http_client.is_closed:
+        await http_client.aclose()
+    http_client = None