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+# Task Manager Codebase Exercise Findings
+
+## Part 1: Project Structure
+- *Entry point:* cli.js (confirmed by package.json "main": "cli.js")
+- *Architecture:* 3-layer pattern
+  - CLI layer (cli.js) → calls Business logic (app.js) → calls Storage (storage.js)
+- *Technologies:* Node.js, Commander.js, UUID, Jest
+- *Key components:*
+  - cli.js — user commands
+  - app.js — TaskManager business logic
+  - models.js — Task, TaskPriority, TaskStatus entities
+  - storage.js — reads/writes tasks.json
+  - task_priority.js — scoring and sorting tasks
+  - task_parser.js — parses natural language into tasks
+  - task_list_merge.js — merges local and remote task lists
+
+## Part 2: CSV Export Feature Plan
+- *New file needed:* task_export.js
+- *Files to modify:* app.js (add exportTasks method), cli.js (add export command)
+- *Reusable functions:* storage.getAllTasks() already exists
+
+## Part 3: Domain Model
+
+### Entity Diagram
+
+TaskPriority        TaskStatus
+LOW = 1             TODO
+MEDIUM = 2          IN_PROGRESS
+HIGH = 3            REVIEW
+URGENT = 4          DONE
+
+Task
+─────────────────
+id (uuid)
+title
+description
+priority → TaskPriority
+status → TaskStatus
+createdAt / updatedAt
+dueDate / completedAt
+tags[]
+
+Methods:
+- update()
+- markAsDone()
+- isOverdue()
+
+
+### Glossary
+- *Task:* core unit of work
+- *Priority:* urgency level (1-4)
+- *Status:* lifecycle stage of a task
+- *Tags:* labels for categorization
+- *Overdue:* dueDate < today AND status != DONE
+- *Score:* calculated weight used to sort tasks by importance
+
+### Quiz Answers
+- Q: Can a DONE task be overdue?
+  A: No — isOverdue() returns false if status === DONE
+- Q: What happens to completedAt when markAsDone() is called?
+  A: It gets set to new Date() (current timestamp)
+- Q: Highest possible priority score?
+  A: URGENT(40) + overdue(30) + blocker tag(8) + recent update(5) = 83
+
+## Part 4: Abandoned Tasks Rule
+
+### Files to Modify
+1. models.js — add ABANDONED to TaskStatus
+2. app.js — add markAbandonedTasks() method
+3. cli.js — add cleanup command
+
+### Team Questions Before Implementing
+1. Should ABANDONED tasks be hidden from the default list view?
+2. Should we notify the user which tasks were abandoned?
+3. Should HIGH priority tasks ever be auto-abandoned?
+4. Should this run automatically on app start or manually?