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Build Log – 2026-01-06

Build Log – 2026-01-06

📅 Daily Log — January 6, 2026

🧠 Context / Focus for Today

Add TrainingPeaks import feature for migrating athletes. Improve AI Coach chat UI with better scrolling, expand/collapse, and visual feedback. Fix AI suggestion bugs and timezone issues. Add disconnect options for integrations. Handle business operations (C Corp approval, company credit card).

✔️ Things I Got Done Today

TrainingPeaks Import Feature

Import System

  • Created comprehensive TrainingPeaks import system for migrating athletes:
    • Supports multiple file formats: GZIP/TAR archives (.gz, .tgz), ZIP archives, TCX files, FIT files, CSV files
    • Parses completed activities with metrics (distance, duration, HR, power)
    • Parses planned/structured workouts with step definitions
    • Automatic deduplication via external_id
    • Date range filtering
    • Replace mode for re-importing

Parser Library (lib/trainingpeaks/)

  • Created TCX parser (tcx-parser.ts):
    • Parses TrainingPeaks TCX export files
    • Extracts activity data and metrics
    • Handles multiple activities per file
  • Created FIT parser (fit-activity-parser.ts, fit-workout-parser.ts):
    • Parses binary FIT files (activities and structured workouts)
    • Extracts detailed workout steps and intervals
    • Handles power, pace, and heart rate zones
  • Created CSV parser (csv-parser.ts):
    • Parses TrainingPeaks CSV summary exports
    • Extracts workout metadata and planned dates
  • Created activity converter (activity-converter.ts):
    • Converts TrainingPeaks activities to Flow State workout format
    • Runs classification for imported running activities
    • Preserves all metrics and metadata

API Endpoint

  • Created /api/trainingpeaks/import endpoint:
    • Handles file uploads via multipart/form-data
    • Validates file types and user authentication
    • Processes archives and extracts files
    • Filters by date range and import type
    • Returns detailed import results (imported, skipped, errors)

UI Component

  • Created TrainingPeaksImportForm component:
    • Drag-and-drop file upload interface
    • File type validation and preview
    • Import type selection (activities, workouts, or both)
    • Date range filtering
    • Replace mode toggle
    • Progress indicators and error handling
    • Integrated into Sync menu

Testing

  • Added 33 unit tests covering:
    • TCX parser functionality
    • CSV parser functionality
    • Activity converter logic
    • Type definitions and validation

AI Coach Chat UI Improvements

Chat Scrolling

  • Fixed scroll-to-bottom behavior:
    • Automatically scrolls to bottom when loading existing chat history
    • Scrolls to bottom when new messages arrive
    • Maintains scroll position during user interaction
    • Improved user experience for long conversations

Expand/Collapse Feature

  • Added expand/collapse functionality to AI Coach chat:
    • Expand button to view full chat history
    • Collapse button to minimize chat
    • Smooth animations and transitions
    • Preserves chat state when expanding/collapsing
    • Improved mobile experience

Escape Key Support

  • Added Escape key to collapse expanded chat:
    • Quick keyboard shortcut for closing chat
    • Improves accessibility and user efficiency
    • Consistent with standard UI patterns

Thinking Logo Animation

  • Replaced bouncing dots with animated Flow State logo:
    • Infinity symbol with brand colors (teal and dark blue)
    • Gradient colors flow through logo shape
    • 2-second animation cycle
    • More polished and branded loading indicator
    • Updated in both ChatDock and AIChatSheet components

AI Suggestion Fixes

Drag-and-Drop Fix

  • Fixed AI suggestion move/reject functionality:
    • Workouts now properly move when dragged to different dates
    • Previously showed success but didn't update (checked workout.provisional which wasn't set)
    • Now checks if workout exists in aiPlan directly
    • Proper state updates when moving suggestions

Timezone Fix

  • Fixed timezone issue in AI Coach:
    • AI coach now uses client's timezone for date calculations
    • Previously used UTC which caused "today" workouts to appear on tomorrow
    • Fixed for users in timezones behind UTC
    • Accurate date handling for all users

Workout Time Updates

  • Fixed handleUpdateWorkoutTime with same provisional detection logic:
    • Consistent behavior across all workout update functions
    • Proper handling of AI-suggested workouts

Integration Management

Disconnect Options

  • Added disconnect options for Garmin and Strava integrations:
    • Users can disconnect integrations from settings
    • Proper cleanup of connection data
    • Improved user control over connected services

Sync Status API Fixes

  • Fixed sync status API error handling:
    • Prevents errors for users without platform connections
    • Graceful handling of missing connections
    • Better error messages and user feedback

Business Operations

C Corp Incorporation

  • C Corp incorporation via Stripe Atlas for Flow State was approved
  • Company is now officially incorporated as a C Corporation
  • Follow-up to the filing completed on January 1st

Company Credit Card

  • Applied for company credit card
  • Enables proper expense tracking and separation of business/personal finances
  • Supports business operations and growth

🚧 In Progress

  • TrainingPeaks import (core functionality complete, additional file formats and edge cases being refined)
  • AI Coach chat UI (core improvements complete, additional polish planned)
  • Integration management (disconnect options complete, additional management features planned)

🎯 Targets for Tomorrow

  1. Refine TrainingPeaks import — handle more edge cases and file formats
  2. Enhance AI Coach chat — add more polish and user experience improvements
  3. Improve integration management — add more control and visibility options
  4. Continue business operations — follow up on credit card application and other administrative tasks

🤔 Notes / Observations

  • TrainingPeaks import enables smooth migration path for athletes switching platforms
  • Chat UI improvements significantly enhance user experience
  • AI suggestion fixes improve reliability and user trust
  • Timezone fixes ensure accurate date handling for all users
  • Disconnect options give users better control over their data
  • C Corp approval marks important milestone in company formation
  • Company credit card enables proper financial management and expense tracking
  • All features maintain consistent design system and user experience

📈 Momentum Score: 9.0 / 10

Excellent day with major feature additions. TrainingPeaks import provides valuable migration path for athletes. Chat UI improvements enhance user experience significantly. AI suggestion fixes improve reliability. Business operations milestones achieved. Strong progress across technical and business fronts. Platform continues to mature and expand capabilities.