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/cli/root.go

@@ -0,0 +1,59 @@
+// Package cli implements the ollama-proxy command-line interface: account
+// management subcommands and the `serve` subcommand that starts the proxy.
+package cli
+
+import (
+	"fmt"
+	"os"
+)
+
+// Run dispatches to a subcommand based on args[1]. It returns the process exit
+// code, or an error that the caller should print before exiting 1.
+func Run(args []string) int {
+	if len(args) < 2 {
+		printRootUsage()
+		return 1
+	}
+	switch args[1] {
+	case "serve":
+		return RunServe(args[2:])
+	case "accounts":
+		return RunAccounts(args[2:])
+	case "version":
+		fmt.Println("ollama-proxy", Version)
+		return 0
+	case "-h", "--help", "help":
+		printRootUsage()
+		return 0
+	default:
+		fmt.Fprintf(os.Stderr, "unknown subcommand: %s\n\n", args[1])
+		printRootUsage()
+		return 2
+	}
+}
+
+// Version is overwritten at build time via -ldflags "-X .../cli.Version=...".
+var Version = "dev"
+
+func printRootUsage() {
+	fmt.Print(`ollama-proxy — multi-account Ollama Cloud reverse proxy
+
+Usage:
+  ollama-proxy serve [flags]              Start the proxy server
+  ollama-proxy accounts <subcommand>      Manage Ollama Cloud API keys
+  ollama-proxy version                    Print version
+
+Accounts subcommands:
+  accounts add [API_KEY] [--name <alias>]   Add an account (prompts for key if not given)
+  accounts list                             List configured accounts
+  accounts remove <id|name>                 Remove an account
+  accounts set-base-url <url>               Set the default upstream URL
+
+Environment variables (serve):
+  OLLAMA_PROXY_ADDR           listen address (default 127.0.0.1:11435)
+  OLLAMA_PROXY_BASE_URL       upstream root (default https://ollama.com)
+  OLLAMA_PROXY_COOLDOWN       429 cooldown window (default 60s)
+  OLLAMA_PROXY_RETRIES        max failover attempts (default 3)
+  OLLAMA_PROXY_LOG_LEVEL     debug|info|warn|error (default info)
+`)
+}