feat: simplify content editor flow

docs/TASKS/content/008-multi-channel-preview-editor.md

@@ -18,6 +18,9 @@ The editor should use one shared content body for every selected target channel,
 - Show selected targets in a vertical rail and render preview cards that look closer to social platform previews.
 - Convert shared hashtags into chip-style entry with suggestions from already used hashtags.
 - Show a workspace hashtag feed so authors can reuse existing tags.
+- Keep the editor focused on post text and target channels by removing confusing title, calendar, change summary, and base-caption fields.
+- Make target preview tabs compact.
+- Move the create content entry point into the main app menu.
 - Preserve existing save payloads and backend contracts.
 
 ## Validation
@@ -36,3 +39,6 @@ npm run build
 - [x] Hashtags commit to removable chips as they are entered.
 - [x] Already used hashtags are available as suggestions.
 - [x] The editor shows a workspace hashtag feed with usage counts.
+- [x] The editor no longer shows title, calendar, change summary, or base-caption fields.
+- [x] Target channel preview tabs use compact buttons.
+- [x] Create content is available from the main app menu.