feat: enhance audit logging, add MCP settings, and production docker setup

- Implemented comprehensive audit logging for Tasks, Users, Settings, Goals, Labels, AI Chat, and Rewards.
- Added Admin UI for MCP Server settings and Audit Logs.
- Created docker-compose-production.yml with Traefik configuration.
- Fixed backend bugs (missing storage methods, route closure).
- Added Audit Logging Guidelines.

client/src/i18n/locales/en.json

@@ -3,6 +3,23 @@
     "title": "TaskFlow",
     "backToTasks": "Back to Tasks"
   },
+  "notifications": {
+    "title": "Notifications",
+    "enableBrowser": "Enable Browser Notifications",
+    "description": "Get alerted about upcoming and overdue tasks.",
+    "enabledTitle": "Notifications Enabled",
+    "enabledBody": "You will now receive alerts for your tasks.",
+    "upcomingTitle": "Upcoming: {{task}}",
+    "upcomingBody": "Due in {{time}}",
+    "overdueTitle": "Overdue: {{task}}",
+    "overdueBody": "This task is now overdue!"
+  },
+  "unscheduled": {
+    "title": "Unscheduled Tasks",
+    "empty": "No unscheduled tasks!",
+    "schedule": "Schedule",
+    "tab": "Unscheduled"
+  },
   "navigation": {
     "tasks": "Tasks",
     "focus": "Focus",
@@ -73,7 +90,10 @@
     "cancel": "Cancel",
     "smartInputActive": "Smart Input Active",
     "energy": "Energy",
-    "minutesPlaceholder": "Minutes (optional)"
+    "minutesPlaceholder": "Minutes (optional)",
+    "duration": "Duration",
+    "durationNone": "None",
+    "startDate": "Start Date"
   },
   "taskDetails": {
     "title": "Task Details",
@@ -107,6 +127,11 @@
     "notesTab": "Notes",
     "timeTab": "Time Tracking",
     "editTask": "Edit Task",
+    "subtasksTab": "Subtasks",
+    "subtasks": "Subtasks",
+    "newSubtaskPlaceholder": "New subtask title...",
+    "createSubtask": "Add Subtask",
+    "noSubtasks": "No subtasks yet",
     "titleLabel": "Title",
     "titlePlaceholder": "Task title",
     "taskNotes": "Task Notes",
@@ -117,7 +142,21 @@
     "addTimeEntry": "Add Time Entry",
     "clock": "Clock",
     "manual": "Manual",
-    "previouslyTrackedTime": "Previously tracked time"
+    "previouslyTrackedTime": "Previously tracked time",
+    "startDate": "Start Date",
+    "estimatedDuration": "Estimated Duration",
+    "subtaskOf": "Subtask of:",
+    "hierarchyRestriction": "Subtasks cannot have their own subtasks. This is a strict 1-level hierarchy.",
+    "blockedBy": "Blocked By",
+    "autoSchedule": "Auto-Schedule",
+    "pickDate": "Pick a date",
+    "scheduling": "Scheduling...",
+    "scheduledFor": "Scheduled for {{date}}",
+    "scheduleFail": "Scheduling failed: {{error}}",
+    "durationUnits": {
+      "m": "m",
+      "h": "h"
+    }
   },
   "taskCard": {
     "play": "Start timer",
@@ -428,10 +467,15 @@
   },
   "ranks": {
     "novice": "Novice",
-    "builder": "Builder",
-    "planner": "Planner",
-    "architect": "Architect",
-    "master": "Master"
+    "apprentice": "Apprentice",
+    "journeyman": "Journeyman",
+    "artisan": "Artisan",
+    "expert": "Expert",
+    "master": "Master",
+    "grandmaster": "Grandmaster",
+    "virtuoso": "Virtuoso",
+    "legend": "Legend",
+    "mythic": "Mythic"
   },
   "leaderboardPage": {
     "title": "Leaderboard",
@@ -519,6 +563,23 @@
       "daily_streak": "Daily Streak Bonus",
       "daily_clear_bonus": "Daily Clear Bonus",
       "goal_completed": "Goal Completed"
+    },
+    "rules": {
+      "title": "Gamification Rules",
+      "xpSystem": "XP System",
+      "levelRequirements": "Level Requirements",
+      "actions": "Actions & Rewards",
+      "level": "Level {{level}}",
+      "xp": "{{xp}} XP",
+      "action": "Action",
+      "points": "Points",
+      "createTask": "Create Task",
+      "createSubtask": "Create Subtask",
+      "updateTask": "Update Task",
+      "completeTask": "Complete Task (On Time)",
+      "completeTaskLate": "Complete Task (Late)",
+      "aiAction": "Use AI Feature",
+      "dailyStreak": "Daily Streak Bonus"
     }
   },
   "rewards": {