feat: remove Todoist integration entirely

Native tasks (native_tasks table) fully replace Todoist. All Todoist
API code, store functions, handlers, routes, templates, and tests have
been removed. Migration 021 drops the now-unused tasks cache table.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 4 insertions, 34 deletions

diff --git a/internal/handlers/agent.go b/internal/handlers/agent.go
index 826ffd7..073084f 100644
--- a/internal/handlers/agent.go
+++ b/internal/handlers/agent.go
@@ -414,12 +414,6 @@ func (h *Handler) handleAgentTaskToggle(w http.ResponseWriter, r *http.Request,
 	var err error
 	ctx := r.Context()
 	switch source {
-	case "todoist":
-		if complete {
-			err = h.todoistClient.CompleteTask(ctx, id)
-		} else {
-			err = h.todoistClient.ReopenTask(ctx, id)
-		}
 	case "trello":
 		err = h.trelloClient.UpdateCard(ctx, id, map[string]interface{}{"closed": complete})
 	case "gtasks":
@@ -450,17 +444,11 @@ func (h *Handler) handleAgentTaskToggle(w http.ResponseWriter, r *http.Request,
 	if complete {
 		title, dueDate := h.getAtomDetails(id, source)
 		_ = h.store.SaveCompletedTask(source, id, title, dueDate)
-		switch source {
-		case "todoist":
-			_ = h.store.DeleteTask(id)
-		case "trello":
+		if source == "trello" {
 			_ = h.store.DeleteCard(id)
 		}
 	} else {
-		switch source {
-		case "todoist":
-			_ = h.store.InvalidateCache(store.CacheKeyTodoistTasks)
-		case "trello":
+		if source == "trello" {
 			_ = h.store.InvalidateCache(store.CacheKeyTrelloBoards)
 		}
 	}
@@ -485,8 +473,6 @@ func (h *Handler) HandleAgentTaskUpdateDue(w http.ResponseWriter, r *http.Reques
 	var err error
 	ctx := r.Context()
 	switch source {
-	case "todoist":
-		err = h.todoistClient.UpdateTask(ctx, id, map[string]interface{}{"due_datetime": req.Due})
 	case "trello":
 		err = h.trelloClient.UpdateCard(ctx, id, map[string]interface{}{"due": req.Due})
 	default:
@@ -500,10 +486,7 @@ func (h *Handler) HandleAgentTaskUpdateDue(w http.ResponseWriter, r *http.Reques
 	}
 
 	// Invalidate cache
-	switch source {
-	case "todoist":
-		_ = h.store.InvalidateCache(store.CacheKeyTodoistTasks)
-	case "trello":
+	if source == "trello" {
 		_ = h.store.InvalidateCache(store.CacheKeyTrelloBoards)
 	}
 
@@ -525,13 +508,6 @@ func (h *Handler) HandleAgentTaskUpdate(w http.ResponseWriter, r *http.Request)
 	var err error
 	ctx := r.Context()
 	switch source {
-	case "todoist":
-		// Map generic updates to Todoist specific ones if needed
-		if title, ok := updates["title"].(string); ok {
-			updates["content"] = title
-			delete(updates, "title")
-		}
-		err = h.todoistClient.UpdateTask(ctx, id, updates)
 	case "trello":
 		if title, ok := updates["title"].(string); ok {
 			updates["name"] = title
@@ -553,10 +529,7 @@ func (h *Handler) HandleAgentTaskUpdate(w http.ResponseWriter, r *http.Request)
 	}
 
 	// Invalidate cache
-	switch source {
-	case "todoist":
-		_ = h.store.InvalidateCache(store.CacheKeyTodoistTasks)
-	case "trello":
+	if source == "trello" {
 		_ = h.store.InvalidateCache(store.CacheKeyTrelloBoards)
 	}
 
@@ -587,9 +560,6 @@ func (h *Handler) HandleAgentTaskCreate(w http.ResponseWriter, r *http.Request)
 	var err error
 	ctx := r.Context()
 	switch req.Source {
-	case "todoist":
-		_, err = h.todoistClient.CreateTask(ctx, req.Title, req.ProjectID, req.DueDate, req.Priority)
-		_ = h.store.InvalidateCache(store.CacheKeyTodoistTasks)
 	case "trello":
 		if req.ListID == "" {
 			http.Error(w, "list_id is required for Trello", http.StatusBadRequest)