The PostgreSQL implementation returns 'PAT not found' when no rows match,
while SQLite/MySQL return 'sql: no rows in result set' from QueryRowContext.

Both behaviors are correct - the key fix is that PostgreSQL no longer
throws JSONB errors on missing/malformed data.

Changes:
- Update test assertions to accept either error type
- Fix comment punctuation for godot linter
- Maintain backward compatibility across all database drivers

Fixes #5612, #5611

Root cause: PostgreSQL's jsonb_array_elements() throws errors when the
'tokens' key is missing or malformed, while SQLite/MySQL return NULL
gracefully. This caused:
- 502 errors when creating admin after v0.25.3 → v0.26.0 upgrade
- Settings not persisting and users unable to stay logged in

Changes to store/db/postgres/user_setting.go:
- Remove strict JSONB operations from GetUserByPATHash query
- Fetch all PERSONAL_ACCESS_TOKENS rows and filter in Go
- Skip malformed/invalid JSON rows with continue (error recovery)
- Match SQLite/MySQL's forgiving error handling

New integration tests (store/test/user_setting_test.go):
- TestUserSettingGetUserByPATHashNoTokensKey
- TestUserSettingGetUserByPATHashEmptyTokensArray
- TestUserSettingGetUserByPATHashWithOtherUsers

New PostgreSQL-specific tests (store/db/postgres/user_setting_test.go):
- TestGetUserByPATHashWithMissingData (comprehensive edge cases)
- TestGetUserByPATHashPerformance (100+ users)
- TestUpsertUserSetting (basic upsert)

Test coverage:
✅ Missing PERSONAL_ACCESS_TOKENS key
✅ Empty/malformed JSON data
✅ Multiple users with mixed valid/invalid data
✅ Performance with 100+ users
✅ Error recovery without crashes

Benefits:
- No database migration required (TEXT column works fine)
- Backward compatible with v0.25.3 upgrades
- Handles missing/corrupt data gracefully
- Consistent behavior across all database drivers

Fixes #5589

When the page returns from background to foreground after the JWT
token expires (~15 min), React Query's automatic refetch-on-focus
triggers multiple API calls simultaneously. These all fail with 401
Unauthorized, leaving the user with empty content.

Solution:
- Add useTokenRefreshOnFocus hook that listens to visibilitychange
- Proactively refresh token BEFORE React Query refetches
- Uses 2-minute buffer to catch expiring tokens early
- Graceful error handling - logs error but doesn't block

Changes:
- Created web/src/hooks/useTokenRefreshOnFocus.ts
- Updated isTokenExpired() to accept optional buffer parameter
- Exported refreshAccessToken() for use by the hook
- Integrated hook into AppInitializer (only when user authenticated)

Removed the hide-scrollbar CSS class and all its usages throughout the
codebase. Hiding scrollbars can hurt UX by making it unclear when
content is scrollable.

Changes:
- Removed hide-scrollbar CSS definition from index.css
- Removed hide-scrollbar class from Navigation component (2 instances)
- Removed hide-scrollbar class from MemoDetailSidebar (2 instances)
- Removed hide-scrollbar class from TagsSection
- Removed hide-scrollbar class from ShortcutsSection

Components now use standard browser scrollbar behavior, which provides
better visual feedback to users about scrollable content. Modern
browsers already handle scrollbar appearance elegantly.

Fixed issue #5579 where the calendar selection dialog was very laggy.

The root cause was rendering ~365 individual Tooltip components when
opening the year calendar view (one per day with activity). This created
a huge number of DOM nodes and event listeners that caused significant
performance issues.

Changes:
- Added disableTooltips prop to MonthCalendar and CalendarCell components
- Disabled tooltips in YearCalendar's small month views
- Removed unnecessary TooltipProvider wrapper in YearCalendar
- Tooltips remain enabled in the default month calendar view

Performance improvements:
- Eliminates ~365 tooltip instances when dialog opens
- Reduces initial render time significantly
- Makes dialog interactions smooth and responsive

Users can still click on dates to drill down for details if needed.

Fixed issue #5576 where clicking the edit button on a shortcut would
incorrectly open a create dialog instead of an edit dialog.

The root cause was an incorrect useEffect that was watching the shortcut
state itself instead of the initialShortcut prop. When the dialog was
opened for editing, the state wasn't properly reinitializing with the
existing shortcut data.

Changed the useEffect to:
- Watch initialShortcut as the dependency
- Reinitialize the shortcut state when initialShortcut changes
- Properly distinguishes between create (initialShortcut undefined) and
  edit (initialShortcut has data) modes

Signed-off-by: memory_clear <83893503+MemoryClear@users.noreply.github.com>

- Add validation check for loading state before allowing save
- Prevents false "Content, attachment, or file required" error
- Occurs when user presses CTRL+Enter immediately after opening edit mode
- Editor state may still be loading when keyboard shortcut fires

Closes #5581

- Fix nested task lists not showing proper indentation
- Use simple CSS cascade with [&_ul.contains-task-list]:ml-6
- Fix checkbox clicks toggling wrong tasks in nested lists
- Search from memo root container for global task indexing
- Remove complex selectors in favor of standard approach
- Match behavior of GitHub, Notion, and other platforms

Closes #5575

Fixes issue where OAuth sign-in fails with 'Cannot read properties of
undefined (reading 'digest')' when accessing Memos over HTTP.

The crypto.subtle API is only available in secure contexts (HTTPS or
localhost), but PKCE (RFC 7636) is optional per OAuth 2.0 standards.

Changes:
- Make PKCE generation optional with graceful fallback
- Use PKCE when crypto.subtle available (HTTPS/localhost)
- Fall back to standard OAuth flow when unavailable (HTTP)
- Log warning to console when PKCE unavailable
- Only include code_challenge in auth URL when PKCE enabled

The backend already supports optional PKCE (empty codeVerifier), so no
backend changes needed. This fix aligns frontend behavior with backend.

Benefits:
- OAuth sign-in works on HTTP deployments (reverse proxy scenarios)
- Enhanced security (PKCE) still used when HTTPS available
- Backward compatible with OAuth providers that don't support PKCE

Fixes #5570

- Add build-binaries workflow for multi-platform binary releases
- Rename workflows for conciseness:
  - demo-render-deploy.yml → demo-deploy.yml
  - build-and-push-canary-image.yml → build-canary-image.yml
  - build-and-push-stable-image.yml → build-stable-image.yml
- Centralize version config with env variables (GO_VERSION, NODE_VERSION, PNPM_VERSION)
- Standardize step names across all workflows
- Add concurrency controls to prevent redundant runs
- Update Node.js (20→22) and pnpm (9→10) versions to match build-binaries
- Improve job names with descriptive labels
- Add consistent comments and formatting
- Set artifact retention to 60 days for binary builds

- Add workflow_dispatch trigger for manual binary builds
- Build for linux (amd64, arm64, arm/v7), darwin (amd64, arm64), windows (amd64)
- Package as tar.gz (Unix) and zip (Windows)
- Generate build summary with artifact sizes

- Remove unused showNsfwContent prop (was only used in MemoDetail to pre-reveal NSFW, which defeats the purpose)
- Inline useNsfwContent hook logic directly into MemoView.tsx (only 3 lines, no reusability benefit)
- Delete web/src/components/MemoView/hooks/useNsfwContent.ts
- NSFW content now consistently starts hidden across all pages
- Maintains same user experience: click to reveal, no toggle back

This removes unnecessary indirection and prop threading while preserving functionality.

Root cause: enabled={isInitialized && !!user} prevented displaying cached
data when user auth state transitioned during token refresh.

Changes:
- Remove !!user check from Home page enabled condition
- Add clearAccessToken() in redirectOnAuthFailure for clean logout

Fixes #5565

Add custom memos_unicode_lower() SQLite function to enable proper
case-insensitive text search for non-English languages (Cyrillic,
Greek, CJK, etc.).

Previously, SQLite's LOWER() only worked for ASCII characters due to
modernc.org/sqlite lacking ICU extension. This caused searches for
non-English text to be case-sensitive (e.g., searching 'блины' wouldn't
find 'Блины').

Changes:
- Add store/db/sqlite/functions.go with Unicode case folding function
- Register custom function using golang.org/x/text/cases.Fold()
- Update filter renderer to use custom function for SQLite dialect
- Add test for Unicode case-insensitive search
- Make golang.org/x/text a direct dependency

Fixes #5559

Fixes #5568

Fixes #5563

Fixes #5566

Fixed #5564

Fixes #5551

The Docker image now runs as non-root (UID 10001) for security, but this
breaks upgrades from 0.25.3 where data files were owned by root.

Changes:
- Dockerfile: Keep USER as root, install su-exec
- entrypoint.sh: Fix ownership of /var/opt/memos, then drop to non-root
- Supports custom MEMOS_UID/MEMOS_GID env vars for flexibility

This allows seamless upgrades without manual chown on the host.

Defense-in-depth fix: Add missing nil check before accessing
currentUser.ID and currentUser.Role in DeleteUser function.

While the auth interceptor should block unauthenticated requests,
this check prevents potential nil pointer panic if fetchCurrentUser
returns (nil, nil).

Security fixes for multiple authorization bypass vulnerabilities:

- GetAttachment: Add visibility check via checkAttachmentAccess helper
- UpdateAttachment: Add ownership check (creator or admin only)
- Fileserver: Require creator/admin auth for unlinked attachments
- ListMemoAttachments: Add memo visibility check
- CreateMemoComment: Add memo visibility check for target memo
- ListMemoReactions: Add memo visibility check
- UpsertMemoReaction: Add memo visibility check

All checks follow the existing pattern used in GetMemo for consistency.

- Add serveMediaStream() to stream video/audio without loading into memory
- Use http.ServeFile for local files (zero-copy, handles range requests)
- Redirect to S3 presigned URLs for S3-stored media files
- Refactor for better maintainability:
  - Extract constants and pre-compile lookup maps
  - Consolidate duplicated S3 client creation logic
  - Split authentication into focused helper methods
  - Group code by responsibility with section comments
  - Add setSecurityHeaders() and setMediaHeaders() helpers

- Remove menu item and dialog from MemoActionMenu
- Remove removeCompletedTasks() and hasCompletedTasks() utilities
- Remove translation keys from all 34 locale files
- Feature was not aligned with standard note-taking UX patterns

- Add TASK_LIST_CLASS and TASK_LIST_ITEM_CLASS constants
- Replace hardcoded 'contains-task-list' and 'task-list-item' strings
- Improve maintainability and prevent typos

- Add same value check before updating createTime/updateTime
- Skip request if new timestamp equals current timestamp
- Simplify callback handlers and improve code readability
- Use .some() instead of .filter().length for cleaner code