Context / Focus for Today

Strava cron sync, AI coach conversation threads, swim workout visualizations, bike power zones, and Vercel Pro upgrade benefits.

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Things I Got Done Today

Strava Cron Sync (Major Feature)

Automatic Background Sync

• Created /api/cron/strava-sync endpoint for automatic activity sync
• Runs every 6 hours (offset from Garmin to avoid overlap)
• Auto-refreshes tokens when needed
• Handles duplicates and matches to planned workouts
• Uses existing Strava client infrastructure

Bug Fixes During Implementation

• Fixed MatchResult type access (nested workout.id)
• Removed non-existent activity_fingerprint column
• Used Strava converter data instead of Garmin prepareCompletionData
• Corrected findMatchingWorkout parameter order
• Added missing userId and source arguments

AI Coach Conversation Threads

Conversation History

• Added conversation threads to AI coach
• Overlay drawer slides over chat (doesn't shrink it)
• "History" pill button in chat header opens conversations panel
• Centered "AI COACH" title in header

Show/Hide Toggle

• Added "Show/Hide AI Coach" toggle button next to Weekly Totals
• Calendar expands to fill space when AI Coach is hidden
• State persists to localStorage

Better Context

• Workout source labels: [AI-created, modifiable], [imported, protected], [user-created, protected]
• AI knows which workouts it can modify vs protected ones
• Added ✓ completed indicator for finished workouts

Cancel Fix

• Cancel button now properly stops AI generation
• Store phase interval in ref so handleCancelGeneration can clear it

Swim Workout Visualizations

Per-Lap Details

• Distance in yards/meters, pace per 100yd/100m
• All swim laps shown (not aggregated splits)
• Distance, Time, Pace columns
• Rest intervals shown dimmed with no pace bar

Strava-Style Charts

• SwimStrokeRateChart with area chart over distance
• SwimHeartRateChart with area chart over distance
• Icon badges, inline stats, reference lines, gradients
• Taller chart area (h-48) for better visibility
• Solid fill gradient matching Strava's style

Layout Improvements

• Renamed "Athlete Intelligence" to "Workout Recap"
• Moved Workout Recap above Stroke Rate chart
• Stats in full-width rows: label left, value right

Bike Power Zones (Major Feature)

FTP-Based Targets

• Added zoneRef to PowerTarget type for zone-based power
• FTP info banner showing current FTP setting
• Power zone picker UI with Zone/Custom toggle

6 Bike Pattern Factories

• Sweet Spot
• VO2max Intervals
• Over-Under
• Threshold
• Power Ramp Up
• Power Ramp Down

AI Examples

• 4 new AI cycling gold examples (Over-Under, Tempo, Sprint, Cadence)

Strava API Compliance

Branding Requirements

• Changed "Imported from Strava" to "Powered by Strava" with logo
• Added "View on Strava" link at bottom of activity modal
• Required for Strava API production access approval

Support Page

• Created /support page for Strava submission requirements
• Contact form sends to support@reachflowstate.ai
• FAQ section with common questions
• Links to privacy policy and terms of service

Production API Application

• Applied for Strava production API access
• Submitted app for review with all branding requirements met

Vercel Pro Upgrade

Extended Timeouts

• Increased maxDuration to 300s for cron jobs (Pro limit)
• Added 60s maxDuration to coach streaming route
• Restored 4-week plan chunk limit (was 2 weeks due to timeout constraints)

Cron Optimization

• Changed Garmin sync from daily to every 6 hours
• Strava sync runs every 6 hours (offset from Garmin)

UX Improvements

Date Range for Clearing

• Select specific date range when clearing imported/AI workouts
• Quick presets and custom date pickers
• No longer clears everything at once

Small Fixes

• User dropdown now appears above AI chat dock (z-index fix)
• Default Strava sync range changed from 30 to 14 days
• Duration display: "1h 49m" instead of "109 min" for long workouts

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Commits Today

• 24 commits covering features, fixes, and optimizations
• Major: Strava cron sync (cd43f7e)
• Major: AI conversation threads (626ab0a, 48b69f4)
• Major: Bike power zones (4064939)
• Feature: Swim charts (1762e30, 0434932, 8400bf3)
• Compliance: Strava branding (c83abed, 2c6e31d)
• Infra: Vercel Pro optimizations (5515dc9, 39935c0)

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In Progress

• Strava API production access submission
• Testing cron sync reliability

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Targets for Tomorrow

1. Strava submission — Complete API production access application
2. Cron monitoring — Verify both Garmin and Strava syncs working
3. Power zone testing — Test FTP-based workouts end-to-end

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Notes / Observations

• Vercel Pro upgrade immediately paid off with 60s function timeout
• Strava's branding requirements are strict but reasonable
• Swim visualizations really pop with the Strava-style design
• Conversation threads make the AI coach feel more like a real assistant
• The 6 Strava cron bug fixes show why iteration and testing matters

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Momentum Score: 9 / 10

Another excellent day! Strava cron sync completes automatic background updates for both platforms. AI conversation threads add memory to the coach. Swim charts look professional. Power zones unlock proper cycling workouts. Vercel Pro removes timeout frustrations.