Removed 3 markdown files that provided no useful documentation:
- web/README.md: Single line "The frontend of Memos" (redundant)
- web/src/components/kit/README.md: Single line "Base components" (minimal)
- web/MARKDOWN_STYLE_GUIDE.md: Outdated styling guide (no longer applicable)

Kept comprehensive documentation files:
- web/src/components/MasonryView/README.md (implementation details)
- web/src/themes/COLOR_GUIDE.md (design system guide)
- web/src/components/ConfirmDialog/README.md (component API docs)
- web/src/store/README.md (architecture patterns)

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

- Add system theme listener to detect OS theme changes in real-time
- Refactor to eliminate duplicate theme preference extraction
- Simplify getMermaidTheme function from switch statement to ternary
- Move render guard outside async function for better readability
- Update comments to be more concise and focused

The component now properly re-renders Mermaid diagrams when the OS theme changes while using "system" theme preference.

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

Co-authored-by: Claude <noreply@anthropic.com>

Streamlines the command suggestion interface and fixes list auto-completion behavior:

- Remove command descriptions for cleaner suggestion popup UI
- Replace PaperclipIcon with FileIcon for semantic accuracy
- Fix list auto-completion to avoid extra newline when exiting list mode
- Add explanatory comments for cursor offset positions
- Improve dependency array in useListAutoCompletion hook

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

Co-authored-by: Claude <noreply@anthropic.com>

Co-authored-by: Claude <noreply@anthropic.com>

Co-authored-by: Claude <noreply@anthropic.com>

Co-authored-by: Claude <noreply@anthropic.com>

Co-authored-by: Claude <noreply@anthropic.com>

Improve bug report and feature request templates to reduce duplicate submissions and gather better information:

Bug Report Template:
- Add pre-submission checklist requiring users to search existing issues and test on latest version/demo
- Add dropdown for issue location (stable, dev, demo site, older version)
- Restructure fields with clearer labels and better placeholders
- Add "Expected Behavior" section for clarity
- Combine screenshots and context with helpful prompts

Feature Request Template:
- Add pre-submission checklist to confirm issue search
- Expand feature type categories (API/Backend, Integrations/Plugins, Security/Privacy, Performance)
- Add "Problem or Use Case" field to understand the underlying need
- Add "Alternatives Considered" section
- Improve placeholders with specific examples

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

Co-authored-by: Claude <noreply@anthropic.com>

Co-authored-by: Claude <noreply@anthropic.com>

Backend changes:
- Fix ListAllUserStats to calculate and return tag statistics
- Previously only returned name and timestamps, missing TagCount
- Now properly aggregates tags, pinned memos, and memo type stats

Frontend changes:
- Initialize user stats on app startup to populate tag data
- Show all tags when typing just '#' (fix empty Fuse.js search)
- Auto-refresh stats after creating/updating/deleting memos
- Fix Checkbox component ref warning with forwardRef

🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>

Co-authored-by: Claude <noreply@anthropic.com>

Address high memory usage when opening resource tab (fixes #5183) by implementing:

1. Concurrency control: Limit thumbnail generation to 3 concurrent operations using semaphore to prevent memory exhaustion when many images are requested simultaneously

2. S3 optimization: Skip server-side thumbnail generation for S3-stored images by default. S3 images now use presigned URLs directly, avoiding:
   - Downloading large images from S3 into server memory
   - Decoding and resizing images on the server
   - High memory consumption during batch requests

3. Memory management improvements:
   - Explicitly clear blob and decoded image from memory after use
   - Restructure thumbnail cache check to avoid unnecessary semaphore acquisition
   - Double-check pattern to prevent duplicate generation while waiting

This restores the original S3 behavior before commit e4f63453 while maintaining thumbnail support for local/database storage.

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

- Replace native input with Radix UI Checkbox in TaskListItem for better accessibility and consistent styling
- Remove memoTypeStats tracking and display (link count, todo count, code count)
- Remove StatCard component and related type definitions
- Simplify statistics to only track activity calendar data and tags

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

- Changed first-user detection to check for any users instead of only HOST users
- Moved registration setting check before role assignment to properly block unauthorized registrations
- Fixed role assignment logic to ensure unauthenticated users always get USER role
- Updated test cases to create host user first when not testing first-user scenario

This ensures the first user is always created as HOST and registration settings are properly enforced for subsequent user creation.

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

Co-authored-by: Claude <noreply@anthropic.com>

Replace non-existent GetWorkspaceGeneralSetting with GetInstanceGeneralSetting
to properly check if user registration is allowed. This fixes a compilation
error that was preventing tests from running.

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

Co-authored-by: Claude <noreply@anthropic.com>

- Polish inbox notification items with improved visual hierarchy
  - Add original memo snippet with left border indicator
  - Redesign comment preview with gradient background and primary accent
  - Increase spacing and improve typography with consistent sizing
  - Add ring borders to avatars and refined icon badges
  - Enhance loading and error states with better skeleton designs
  - Improve hover states and transitions throughout

- Redesign user profile header layout
  - Create full-width centered header with avatar and user info
  - Add horizontal layout for profile actions
  - Improve responsive design with proper flex wrapping
  - Allow memo list to use full width for masonry layout

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

Nominatim's usage policy requires a User-Agent header to identify the application. Added User-Agent and Accept headers to the reverse geocoding fetch request, and improved error handling to check HTTP response status.

Fixes #5222

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

Remove work-related terminology by renaming "workspace" to "instance"
across the entire application. This change better reflects that Memos
is a self-hosted tool suitable for personal and non-work use cases.

Breaking Changes:
- API endpoints: /api/v1/workspace/* → /api/v1/instance/*
- gRPC service: WorkspaceService → InstanceService
- Proto types: WorkspaceSetting → InstanceSetting
- Frontend translation keys: workspace-section → instance-section

Backend Changes:
- Renamed proto definitions and regenerated code
- Updated all store layer methods and database drivers
- Renamed service implementations and API handlers
- Updated cache from workspaceSettingCache to instanceSettingCache

Frontend Changes:
- Renamed service client: workspaceServiceClient → instanceServiceClient
- Updated all React components and state management
- Refactored stores: workspace.ts → instance.ts
- Updated all 32 locale translation files

All tests pass and both backend and frontend build successfully.

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

Co-authored-by: Claude <noreply@anthropic.com>

Create unified architecture for memo statistics, filters, and sorting
across all pages (Home, Explore, Archived, Profile) with proper
visibility filtering and consistent data flow.

Key changes:
- Rename HomeLayout → MainLayout to reflect broader usage
- Create useFilteredMemoStats hook for unified stats computation
- Create useMemoFilters/useMemoSorting hooks to eliminate duplication
- Refactor all pages to use unified hooks (~147 lines removed)
- Move Explore route under MainLayout (was sibling before)
- Fix masonry column calculation threshold (1024px → 688px+)

Architecture improvements:
- MainLayout computes filter/stats per route context
- Stats/tags based on same filter as memo list (consistency)
- Proper visibility filtering (PUBLIC/PROTECTED) on Explore
- MemoExplorer/StatisticsView accept stats as required props
- Eliminated optional fallbacks and redundant data fetching

Benefits:
- Single source of truth for stats computation
- Stats remain static (don't change with user filters)
- Reduced code duplication across 4 pages
- Better maintainability and type safety
- Proper security (no private memo leakage on Explore)

🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>

Fixed a bug where clicking checkboxes in task lists would toggle the wrong
checkbox when a memo contained multiple sections with separate task lists.

The issue was that TaskListItem was counting tasks only within the immediate
parent list (ul/ol), but the toggleTaskAtIndex function counts all tasks
globally across the entire memo. This caused index misalignment.

Changes:
- Add containerRef to MemoContentContext for proper task scoping
- Pass memoContentContainerRef through context in MemoContent component
- Update TaskListItem to count all tasks within the container scope

This ensures task indices are calculated consistently with the markdown
manipulation logic, fixing checkbox toggling in complex multi-section memos.

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

- Replace multiple action buttons with unified InsertMenu dropdown
- Consolidate upload, link memo, and location into single + button
- Redesign VisibilitySelector with text-based dropdown UI
- Unify badge styling for location, attachments, and links
  - Consistent height (h-7), padding, gaps, and border styles
  - Secondary foreground text color with hover states
  - Max width with truncation for long content
- Add image thumbnails in attachment badges
- Simplify button hierarchy with ghost variant for save/cancel
- Remove obsolete components (TagSelector, MarkdownMenu, etc.)
- Extract LocationView to separate component for better organization

Fixes #5196

- Remove standalone InboxService and move functionality to UserService
- Rename inbox to user notifications for better API consistency
- Add ListUserNotifications, UpdateUserNotification, DeleteUserNotification methods
- Update frontend components to use new notification endpoints
- Update store layer to support new notification model

🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>

- Refactored MemoFilters.tsx for better maintainability:
  * Centralized filter configuration with FILTER_CONFIGS object
  * Added TypeScript interfaces for type safety
  * Removed separate FactorIcon component
  * Extracted handleRemoveFilter function
  * Improved imports organization

- Polished MemoFilters UI styles:
  * Changed to modern pill/badge design with rounded-full
  * Enhanced spacing and color schemes
  * Added smooth transitions and hover effects
  * Improved interactive remove button with destructive color hints
  * Better text readability with font-medium

- Added comprehensive filter support to all pages:
  * Explore page: Added full filter support (was missing)
  * Archived page: Enhanced from basic to full filter support
  * UserProfile page: Enhanced from basic to full filter support
  * All pages now support: content search, tag search, pinned, hasLink, hasTaskList, hasCode, and displayTime filters

- Consistency improvements:
  * All pages using PagedMemoList now have identical filter logic
  * Respects workspace settings for display time (created/updated)
  * Unified filter behavior across Home, Explore, Archived, and UserProfile pages