# Implementation Plan: Cost & Token Analytics Panel (cost_token_analytics_20260306)

## Phase 1: Panel Setup
- [ ] Task: Initialize MMA Environment
- [ ] Task: Create cost panel structure
    - WHERE: src/gui_2.py
    - WHAT: New panel for cost display
    - HOW: Add _render_cost_panel method
    - SAFETY: Non-blocking updates

## Phase 2: Cost Calculations
- [ ] Task: Integrate cost_tracker
    - WHERE: src/gui_2.py
    - WHAT: Use cost_tracker.estimate_cost
    - HOW: Call with model and token counts
    - SAFETY: Cache expensive calculations
- [ ] Task: Track session totals
    - WHERE: src/gui_2.py or app_controller
    - WHAT: Accumulate cost over session
    - HOW: Maintain running total
    - SAFETY: Thread-safe updates

## Phase 3: UI Implementation
- [ ] Task: Render cost breakdown
    - WHERE: src/gui_2.py
    - WHAT: Show per-model and per-tier costs
    - HOW: imgui tables
    - SAFETY: Handle zero/empty states

## Phase 4: Verification
- [ ] Task: Test cost calculations
- [ ] Task: Conductor - Phase Verification