Add Calibrate AI Control UI and fleet LLM backend wiring.

Operators toggle Logic gates vs AI Control on Settings, refresh local Ollama models, and save ai_endpoint settings via Calibrate PUT; server scheduler and agent snapshot/command paths support stateless 60s fleet decisions.

server/internal/ai/commands_test.go

@@ -0,0 +1,39 @@
+package ai
+
+import "testing"
+
+func TestParseCommandsJSONBlock(t *testing.T) {
+	raw := `Here is my plan:
+{"commands":[{"type":"restart_mining","args":{}}]}`
+	cmds := ParseCommands(raw)
+	if len(cmds) != 1 || cmds[0].Type != CmdRestartMining {
+		t.Fatalf("got %+v", cmds)
+	}
+}
+
+func TestParseCommandsToolCall(t *testing.T) {
+	raw := `{"tool":"restart_agent","args":{}}`
+	cmds := ParseCommands(raw)
+	if len(cmds) != 1 || cmds[0].Type != CmdRestartMining {
+		t.Fatalf("got %+v", cmds)
+	}
+}
+
+func TestParseCommandsLineFallback(t *testing.T) {
+	raw := "COMMAND: spread_now\nCOMMAND: noop"
+	cmds := ParseCommands(raw)
+	if len(cmds) != 2 || cmds[0].Type != CmdSpreadNow || cmds[1].Type != CmdNoop {
+		t.Fatalf("got %+v", cmds)
+	}
+}
+
+func TestParseCommandsAgentCommand(t *testing.T) {
+	raw := `{"commands":[{"type":"agent_command","args":{"action":"pause"}}]}`
+	cmds := ParseCommands(raw)
+	if len(cmds) != 1 || cmds[0].Type != CmdAgentCommand {
+		t.Fatalf("got %+v", cmds)
+	}
+	if cmds[0].Args["action"] != "pause" {
+		t.Fatalf("args: %+v", cmds[0].Args)
+	}
+}