[WIP] Complete migration to NextAuth and update documentation

[Copilot]

Thanks for the feedback on #58. I've created this new PR, which merges into #58, to address your comment. I will work on the changes and keep this PR's description up to date as I make progress.

Original PR: #58
Triggering comment (#58 (comment)):

This pull request consists primarily of documentation updates and configuration improvements related to authentication refactoring, TypeScript type augmentation, and development tooling. The most significant changes include marking the authentication migration as fully complete, providing detailed reports on route error resolution and type augmentation fixes, and updating VS Code workspace settings for improved developer experience.

Authentication Refactoring Completion

• Updated docs/reviews/AUTHENTICATION_REFACTORING_PLAN.md to reflect that all 8 phases of the migration to NextAuth.js are complete. Includes final metrics, status updates, and explicit completion notes for each phase and task. [1] [2] [3] [4]

TypeScript Type Augmentation Fixes

• Added docs/TYPE_AUGMENTATION_FIX_SUMMARY.md documenting the resolution of TypeScript session type errors, including moving the augmentation file to types/next-auth.d.ts, updating tsconfig.json, removing duplicate declarations, and outlining next steps for test file updates.

Route Error Investigation and Resolution

• Added docs/PRIORITY_1_COMPLETION_REPORT.md summarizing the investigation and resolution of ERR_ABORTED errors on five dashboard routes. Details root cause (Turbopack cache corruption), verification steps, and next actions for store admin testing.

VS Code Workspace Improvements

• Updated .vscode/settings.json to enable Copilot chat features, nested agents, and other chat tooling for improved code search and auto-fix capabilities.
• Added .vscode/tasks.json with a task for running the Next.js dev server and ESLint problem matching.
• Added .vscode/mcp.json as a workspace configuration stub.

@copilot Check the tasks and start the implementations

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[rezwana-karim]

@copilot Try again