Implement Unified Quick Add for Tasks tab (Phase 3 Step 8)

Add Quick Add form to create Todoist tasks or Trello cards directly
from the Tasks tab with optional due date support.

Features:
- HandleUnifiedAdd handler with due date parsing
- HandleGetListsOptions for dynamic Trello list loading
- Quick Add form with source toggle (Todoist/Trello)
- Date picker for due dates
- HX-Trigger refresh after successful creation
- Pass boards to tasks-tab template for board selector

Cleanup:
- Remove resolved issue tracking files

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 0 insertions, 40 deletions

diff --git a/issues/phase3_step4_todoist_write.md b/issues/phase3_step4_todoist_write.md
deleted file mode 100644
index f68a963..0000000
--- a/issues/phase3_step4_todoist_write.md
+++ /dev/null
@@ -1,40 +0,0 @@
-# Phase 3 Step 4: Todoist Write Operations
-
-## Goal
-Implement write operations for Todoist (Create Task, Complete Task) and update the UI to support them.
-
-## Requirements
-
-### Backend
-1.  **Models**:
-    *   Add `Project` struct to `internal/models/types.go`.
-    *   Add `Projects []Project` to `DashboardData`.
-2.  **API (`internal/api/todoist.go`)**:
-    *   Refactor `GetProjects` to return `[]models.Project`.
-    *   Implement `CreateTask(content, projectID string)`.
-    *   Implement `CompleteTask(taskID string)`.
-    *   Refactor `baseURL` to be a struct field for testability.
-3.  **Handlers (`internal/handlers/handlers.go`)**:
-    *   Update `aggregateData` to fetch projects and populate `DashboardData`.
-    *   Implement `HandleCreateTask`:
-        *   Parse form (`content`, `project_id`).
-        *   Call `CreateTask`.
-        *   Return updated task list partial.
-    *   Implement `HandleCompleteTask`:
-        *   Call `CompleteTask`.
-        *   Return empty string (to remove from DOM).
-
-### Frontend
-1.  **Template (`web/templates/partials/todoist-tasks.html`)**:
-    *   Add "Quick Add" form at the top.
-        *   Input: Task content.
-        *   Select: Project (populated from `.Projects`).
-    *   Update Task Items:
-        *   Add Checkbox.
-        *   `hx-post="/tasks/complete"`.
-        *   `hx-target="closest .todoist-task-item"`.
-        *   `hx-swap="outerHTML"`.
-
-## Verification
-*   Unit tests for API client.
-*   Manual verification of UI flows.