Large refactor - it compiles!

This refactor splits out all conversation concerns into a new
`conversation` package. There is now a split between `conversation` and
`api`s representation of `Message`, the latter storing the minimum
information required for interaction with LLM providers. There is
necessary conversation between the two when making LLM calls.

pkg/cmd/remove.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"strings"
 
-	"git.mlow.ca/mlow/lmcli/pkg/api"
 	cmdutil "git.mlow.ca/mlow/lmcli/pkg/cmd/util"
+	"git.mlow.ca/mlow/lmcli/pkg/conversation"
 	"git.mlow.ca/mlow/lmcli/pkg/lmcli"
 	"github.com/spf13/cobra"
 )
@@ -23,14 +23,14 @@ func RemoveCmd(ctx *lmcli.Context) *cobra.Command {
 			return nil
 		},
 		RunE: func(cmd *cobra.Command, args []string) error {
-			var toRemove []*api.Conversation
+			var toRemove []*conversation.Conversation
 			for _, shortName := range args {
 				conversation := cmdutil.LookupConversation(ctx, shortName)
 				toRemove = append(toRemove, conversation)
 			}
 			var errors []error
 			for _, c := range toRemove {
-				err := ctx.Store.DeleteConversation(c)
+				err := ctx.Conversations.DeleteConversation(c)
 				if err != nil {
 					errors = append(errors, fmt.Errorf("Could not remove conversation %s: %v", c.ShortName.String, err))
 				}
@@ -44,7 +44,7 @@ func RemoveCmd(ctx *lmcli.Context) *cobra.Command {
 			compMode := cobra.ShellCompDirectiveNoFileComp
 			var completions []string
 		outer:
-			for _, completion := range ctx.Store.ConversationShortNameCompletions(toComplete) {
+			for _, completion := range ctx.Conversations.ConversationShortNameCompletions(toComplete) {
 				parts := strings.Split(completion, "\t")
 				for _, arg := range args {
 					if parts[0] == arg {