feat: ollama-proxy — multi-account Ollama Cloud reverse proxy

Go reverse proxy for ollama.com that balances requests across multiple
API keys with round-robin and failover on 429/5xx. Exposes both native
Ollama API (/api/*) and OpenAI-compatible (/v1/*) passthrough.

- Round-robin balancer with per-account cooldown (60s default)
- Pre-stream failover: 429 → cooldown + next account; 5xx → next account
- Streaming invariant: once 2xx starts streaming, no account switch
- SSE (text/event-stream) and NDJSON passthrough with http.Flusher
- CLI: accounts add/list/remove/set-base-url, serve, version
- Accounts stored in ~/.config/ollama-proxy/accounts.json (chmod 0600)
- systemd unit (User=dueattendant149, 127.0.0.1:11435, Restart=always)
- 43 tests (unit + integration with httptest upstream)
- opencode integration: custom provider 'ocp' with explicit model list
- Requires NO_PROXY=127.0.0.1,localhost when HTTP_PROXY is set

internal/log/logger.go

@@ -0,0 +1,29 @@
+// Package log provides a thin slog wrapper so callers can configure the level
+// from a single string ("debug"|"info"|"warn"|"error").
+package log
+
+import (
+	"log/slog"
+	"os"
+	"strings"
+)
+
+// New returns a slog.Logger writing JSON to stdout at the given level. An
+// unknown level falls back to info.
+func New(level string) *slog.Logger {
+	var lvl slog.Level
+	switch strings.ToLower(level) {
+	case "debug":
+		lvl = slog.LevelDebug
+	case "info":
+		lvl = slog.LevelInfo
+	case "warn":
+		lvl = slog.LevelWarn
+	case "error":
+		lvl = slog.LevelError
+	default:
+		lvl = slog.LevelInfo
+	}
+	h := slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{Level: lvl})
+	return slog.New(h)
+}