- Move explore.* keys to top-level in i18n (from common.*)
- Fix SheetTrigger className issue by wrapping trigger in span
- Fix visibility toggle onClick handler for better clarity
- Update Navigation to use explore.title instead of common.explore

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Remove anthropic provider entirely (uses native Anthropic protocol)
- Add zai provider with OpenAI-compatible protocol
- Update default LLM provider from anthropic to zai
- Update default model from opus to glm-4.7
- Update profile config: AIZAI_APIKey, AIZAIBaseURL
- Update AI service to use zai with DefaultConfig
- Fix profile tests for AIEnabled logic
- Update documentation (BACKEND_DB.md, ARCHITECTURE.md)
- Update .env.example and .env.prod.example

Z.AI (智谱) GLM models:
- glm-4.7 (GLM Opus 4.6, recommended)
- glm-4.5 (GLM Sonnet 5, latest)
- glm-4-flash (fast response)
- glm-4-air (ultra fast)
- glm-4-plus (enhanced)

API endpoint: https://open.bigmodel.cn/api/paas/v4

Refs #2

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

…ooltips

- Add three-state visibility selector (Private/Protected/Public)
- Add Tooltip component for all toolbar buttons
- Add breath animation effect (3000ms cycle) on hover
- Remove duplicate FixedEditor components (consolidate to MemoEditor)
- Add MobileToolsSheet for mobile device tools
- Reorganize toolbar layout: tools on left, settings on right
- Add location button to desktop toolbar

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Add FixedEditor component for mobile quick input
- Add EditorWithPlugins for plugin system integration
- Enhance FocusModeEditor with responsive styling
- Update EditorToolbar and EditorContent for mobile
- Export new components in index files
- Update editor types for plugin support

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Use forwardRef in ToolbarButton for Radix UI asChild support
- Fix EditorWithPlugins infinite update loop by:
  - Using ref to store plugins (stable reference)
  - Remove unnecessary dependencies from useEffect

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Add FixedEditor v2.0 with mobile keyboard adaptation
- Implement responsive toolbar (PC full, Mobile compact)
- Add AIFormatButton with i18n prompt support
- Add AITagButton with Popover tag selection
- Add VisibilityToggleGroup for quick visibility toggle
- Integrate EditorWithPlugins with Slash Commands

Fixes from code review:
- Add aria-label and ARIA attributes for accessibility
- Use i18n for AI format prompt (was hardcoded Chinese)
- Add error handling to useFormatContent hook
- Fix key prop placement in VisibilityToggleGroup
- Remove unused className void statement

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Unify button border radius to rounded-xl (was mixed rounded-lg/xl)
- Unify button height to h-9 (was h-7/h-8/h-9 mixed)
- Unify AI button colors to violet/purple gradient
- Replace custom spinner with Loader2 icon for loading state
- Remove unused i18n keys (to-save, ready-to-save, empty-hint)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Change responsive breakpoint from md (768px) to lg (1024px) so that
toolbar buttons show only icons on narrower screens, not just mobile.

- AI buttons: compact mode now active below lg (1024px)
- VisibilityToggleGroup: label text hidden below lg
- Focus mode button: visible only above lg

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- MemoBlockV3: Sticky note style with tag-based color mapping
- MemoListV3: Zen kanban layout with CSS columns
- Smart 200-char preview
- Paper shadow + fold corner effect

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Remove MemoBlockV2.tsx
- Remove MemoList.tsx
- Remove MemoListStates.tsx
- Update exports and imports

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Replace CSS Grid with CSS Columns to eliminate blank space between
MemoBlocks with different heights.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- MemoListV3: EmptyState and EndIndicator now use t()
- MemoBlockV3: All action labels, visibility labels, swipe hints use t()
- Add new i18n keys: memo.empty_*, memo.swipe_*, memo.clear_completed_tasks,
  memo.comment_label, memo.actions, memo.more_actions, common.now

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Add i18n for time formats (minutes-ago, hours-ago)
- Add try-catch with handleError for pin/delete/remove-tasks
- Replace magic numbers with Visibility enum
- Extract getMemoId/getMemoEditPath utilities
- Pre-compile word boundary regexes for performance
- Add ReDoS protection in stripMarkdown
- Add passive:true to scroll listener
- Remove unused showCreator prop

Refs #172