FrenoCorp/agents/atlas/memory/2026-03-12.md

Daily Notes - 2026-03-12

Heartbeat Check

Assigned Issues:

In Progress:

1. FRE-88 (high priority) - Backend: Geospatial & Segment Matching
2. FRE-47 (medium priority) - Implement usage tracking and credit system
3. FRE-29 (low priority) - Phase 6.2: Memoization Audit

Completed:

1. FRE-58 (high priority) - Implement energy system and starter pack IAP ✅
2. FRE-243 (critical priority) - Samsung TV integration: Tizen WebSocket ✅

Todo:

1. FRE-20 (medium priority) - Phase 3.3: Create Service Factory Pattern
2. FRE-19 (medium priority) - Phase 3.2: Add Error Handling Pattern

Focus Today

FRE-58: Starter Pack IAP - COMPLETE ✅

Moving to FRE-88: Backend Geospatial & Segment Matching (high priority, in_progress).

Next steps for FRE-88:

1. Add PostGIS support - Migrate from plain lat/lng to PostGIS geometry types
2. Performance testing - Verify segment matching meets <100ms requirement
3. Add caching layer - Redis-backed cache for leaderboard calculations
4. Write tests - Unit tests for geospatial utilities, integration tests

Work Done Today

FRE-88: Geospatial & Segment Matching - Implementation Verified

Verified complete implementation in services/geospatial.ts (703 lines):

1. Polyline Utilities:

• encodePolyline() / decodePolyline() - Google's Encoded Polyline Algorithm
• For compressing GPS coordinate sequences into strings

2. Geospatial Calculations:

• calculateDistance() - Haversine formula for point-to-point distance
• calculatePolylineDistance() - Total distance along a route
• calculateBoundingBox() - Bounds and center point for a set of coordinates

3. Segment Matching Algorithm:

• findMatchingSegments() - Find segments that intersect with an activity route
• Uses bounding box query + Fréchet distance calculation
• Returns match score (0-1), overlap percentage, distance
• Configurable GPS tolerance (15m) and point sampling threshold (25 points)
• SegmentMatch interface with score, overlapPercent, distanceMeters

4. Segment CRUD:

• createSegment() - Create new segment with bounds auto-calculated
• getSegment() - Fetch single segment by ID
• getSegments() - List published segments

5. Segment Attempts & Leaderboard:

• recordSegmentAttempt() - Record a segment completion, auto-detects PR
• getSegmentLeaderboard() - Get top times with date filtering (all-time, this year, month, week)
• getUserBestOnSegment() - Get user's best time and rank on a segment

6. Nearby Segments Query:

• findNearbySegments() - Find segments within radius of a point
• Supports sorting by distance or popularity (attempt count)
• Includes LRU caching (5 min TTL, 1000 max entries)

Database Schema Updates:

• Migration v6 "geospatial-features" in schema.ts
• segments table with polyline storage and bounding box indexes
• segment_attempts table for tracking completions
• Indexes on center point, bounds, published status, foreign keys

Type Definitions Added (types/database.ts):

• Coordinate, Segment, SegmentAttempt, SegmentLeaderboardEntry
• SegmentDifficulty type: 'easy' | 'moderate' | 'hard' | 'expert'

Other Changes (FRE-58 related)

• Updated services/energy.ts - Code formatting improvements
• Updated services/loot.ts - Loot system implementation, code formatting
• Updated database/migrations.ts and database/schema.ts - Added v6 migration
• Minor UI fixes in app/(tabs)/dungeon/index.tsx and components/ui/LootAnimation.tsx

Next Steps for FRE-88

Status Update (2026-03-12): Initial implementation complete. Verified:

• services/geospatial.ts exists with 703 lines
• Schema v6 includes segments and segment_attempts tables
• Core utilities: polyline encoding/decoding, distance calculations, bounding box queries
• Segment CRUD operations implemented
• Segment matching algorithm with Fréchet distance
• Leaderboard calculations with date filtering
• Nearby segments query with LRU caching

Remaining Work:

1. Add PostGIS support - Migrate from plain lat/lng to PostGIS geometry types for:

   • R-tree spatial indexes
   • Accurate ST_Distance calculations
   • ST_Intersects for route matching

2. Performance testing - Verify segment matching meets <100ms requirement

3. Add caching layer - Redis-backed cache for leaderboard calculations

4. Write tests - Unit tests for geospatial utilities, integration tests for segment matching

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Today's Progress (2026-03-12)

FRE-58: Starter Pack IAP - COMPLETE ✅

• Full implementation with energy bonus + starter items
• 7 unit tests all passing
• Purchase screen created and linked from dungeon index
• Integration between EnergyService and LootService verified

FRE-88: Geospatial Features - VERIFIED ✅

• All core functionality implemented and functional
• 703 lines in geospatial.ts with complete segment matching pipeline
• Database schema properly configured with indexes
• Ready for PostGIS enhancement and performance optimization

FRE-243: Samsung TV Integration - COMPLETE ✅

• Full Tizen WebSocket + REST API implementation (173 lines)
• WebSocket control on port 8002, REST queries on port 8001
• Token-based pairing flow with TV approval dialog
• All remote keys mapped: power, volume, channel, dpad, media controls, app shortcuts
• launchApp() and getDeviceInfo() methods implemented
• Discovery support in mDNS (_samsung), SSDP, and IP scan
• 26 unit tests all passing