v1.0.0-beta3: Add Planner task creation with notes, fix folder name trimming, fix Excel folder link fallback

CHANGELOG.md

@@ -2,32 +2,6 @@
 
 All notable changes to this project will be documented in this file.
 
-## v1.0.0-beta4 - 2025-12-20
-
-- Teams Message Management
-  - Added UI (`frontend/teams-messages.html`) to load and review Teams channel messages with job details.
-  - Features: Auto-load via URL params, auto-select up to 50 messages, preview job card details, collapsible JSON.
-  - **Known Limitation**: Message deletion is not supported by Microsoft Teams Graph API for public channels (HTTP 405).
-    - This is a platform limitation, not an application error.
-    - Workaround 1: Delete messages directly from Teams client (right-click → Delete).
-    - Workaround 2: Use delegated user token with `ChatMessage.ReadWrite.All` permission (requires Azure AD configuration).
-  - Updated error handling to clearly explain Teams API limitations to users.
-- Ops
-  - Enhanced error logging in server delete endpoint to capture full error details and distinguish between API errors and Teams platform limitations.
-
-## v1.0.0-beta3 - 2025-12-20
-
-- Teams Notifications
-  - Fixed webhook 400 error by adding `contentUrl: null` to Adaptive Card attachment payload.
-  - Reformatted card from FactSet to TextBlocks with markdown bold labels (`**Label:** value`) and `spacing: 'None'` for compact rows.
-  - Added timestamp to notification card.
-  - Removed folder button/actions from card - notifications now show job info only.
-  - Removed unused `buildMessageCard` function and simplified `buildAdaptiveCard`/`notifyTeamsChannel` signatures.
-- Excel Sync
-  - Fixed Active formula being overwritten: `updateExcelFolderLink` now uses Graph API `cell(row,column)` method to update only the Job_Folder_Link cell, preserving formulas in other columns.
-- Versioning
-  - Bumped `package.json` to `1.0.0-beta3`.
-
 ## v1.0.0-beta2 - 2025-12-19
 
 - UI