feat: deliver P2 v0.2.0 with unified editor, search, and snapshots

Implement schema v2 migration, outline/setting/inspiration CRUD, unified TipTap editing, reference panel with mentions, FTS global search, chapter version history, writing landmarks, word frequency analysis, light theme contrast fixes, and full unit/E2E test coverage.

Co-authored-by: Cursor <cursoragent@cursor.com>

public/locales/en/translation.json

@@ -68,6 +68,7 @@
   "toast.bookCreated": "Book created",
   "toast.saveFailed": "Save failed, please retry",
   "toast.enterBookName": "Please enter a book title",
+  "toast.noBookOpen": "No book open",
   "shortcuts.saveChapter": "Save chapter",
   "shortcuts.newChapter": "New chapter",
   "shortcuts.focusMode": "Focus mode",
@@ -83,5 +84,60 @@
   "shortcuts.recordHint": "Press a new key combination (Esc to cancel)",
   "shortcuts.recording": "Recording…",
   "shortcuts.conflict": "This shortcut is already assigned",
-  "shortcuts.registerFailed": "Failed to register shortcut, may conflict with another app"
+  "shortcuts.registerFailed": "Failed to register shortcut, may conflict with another app",
+  "outline.new": "New Outline",
+  "outline.newItem": "New outline node",
+  "outline.empty": "No outline yet. Click below to create one.",
+  "setting.new": "New Setting",
+  "setting.empty": "No settings yet",
+  "setting.typeLabel": "Type",
+  "setting.nameLabel": "Name",
+  "setting.type.character": "Character",
+  "setting.type.location": "Location",
+  "setting.type.item": "Item",
+  "setting.type.skill": "Skill",
+  "setting.type.faction": "Faction",
+  "setting.type.custom": "Custom",
+  "inspiration.new": "New Idea",
+  "inspiration.newItem": "New idea",
+  "inspiration.empty": "No ideas yet",
+  "inspiration.untitled": "Untitled",
+  "inspiration.noContent": "(empty)",
+  "outline.filterAll": "All",
+  "outline.filterUncovered": "Uncovered",
+  "outline.filterCovered": "Covered",
+  "outline.compare": "Compare",
+  "outline.compareTitle": "Outline vs Chapter",
+  "outline.exitCompare": "Exit compare",
+  "outline.emptyFilter": "No matching items",
+  "outline.notWritten": "Not written yet",
+  "outline.noContent": "No content",
+  "outline.expected": "Expected",
+  "outline.actual": "Actual",
+  "outline.deviation": "Deviation",
+  "outline.jumpEditor": "Open in editor",
+  "reference.title": "Reference",
+  "reference.search": "Search references…",
+  "reference.tab.setting": "Settings",
+  "reference.tab.outline": "Outline",
+  "reference.tab.inspiration": "Ideas",
+  "search.title": "Global Search",
+  "search.placeholder": "Search…",
+  "search.regex": "Regex",
+  "search.caseSensitive": "Case sensitive",
+  "version.title": "Version History",
+  "version.empty": "No snapshots",
+  "version.create": "Create snapshot",
+  "version.restore": "Restore",
+  "version.manual": "Manual snapshot",
+  "version.selectHint": "Select a version to compare",
+  "version.restoreConfirm": "Restore this version? Current content will be overwritten.",
+  "landmark.title": "Landmarks",
+  "landmark.empty": "No landmarks",
+  "landmark.insert": "Insert landmark",
+  "landmark.prompt": "Landmark label",
+  "landmark.created": "Landmark inserted",
+  "landmark.chapterOnly": "Insert landmarks in a chapter",
+  "wordfreq.hint": "Top 100 words in current scope",
+  "wordfreq.aiNaming": "AI naming suggestions"
 }