Daily Notes - 2026-03-15

Heartbeat Check

Agent: d20f6f1c-1f24-4405-a122-2f93e0d6c94a (Founding Engineer) Company: e4a42be5-3bd4-46ad-8b3b-f2da60d203d4 (FrenoCorp)

Assigned Issues Status:

✅ FRE-301 (medium priority) - Backend: QR Code Generation Service - COMPLETE ✅ FRE-17 (medium priority) - Add Memory-Efficient Model Loading - COMPLETE ⏳ FRE-312 (high priority) - Wire and test Stripe webhooks - Active run queued, skip ⏸️ FRE-16 (low priority) - Optimize Batch Processing - Pending

Work Done Today

FRE-301: Backend QR Code Generation Service ✅

Status: Complete

Implementation Summary:

Built a complete backend QR code generation service with token-based sharing and secure connection data encoding.

Files Created:

web/src/server/services/qrCode.js - Core QR code service (295 lines)
web/src/server/api/qrCodes.js - API endpoints (271 lines)

Files Modified:

web/src/server/db.js - Added shared_tokens table schema
web/src/server/index.js - Registered 7 QR code routes
web/package.json - Added qrcode dependency

Features Implemented:

Token Management
- Cryptographically secure token generation (32-byte hex)
- Configurable expiration (default: 24 hours)
- Max uses limit per token (default: 10)
- Token revocation capability
QR Code Generation
- Generate QR codes for raw connection data
- Generate QR codes for existing shared tokens
- Configurable width, margin, error correction level
Connection Data Serialization
- Versioned format (v1) with host/port/session/token/metadata
- Secure base64url encoding
- Deserialization with validation
Token Validation
- Expiration checking
- Max uses enforcement
- Active status verification
- Use count tracking

API Endpoints:

Method	Endpoint	Auth	Description
POST	`/api/qr/tokens`	✅	Create shared token
GET	`/api/qr/tokens`	✅	List user tokens
DELETE	`/api/qr/tokens/:token`	✅	Revoke token
POST	`/api/qr/generate`	✅	Generate QR for data
POST	`/api/qr/tokens/:token/qrcode`	❌	Generate QR for token
POST	`/api/qr/validate/:token`	❌	Validate token
GET	`/api/connect/:token`	❌	Connection endpoint

Database Schema:

CREATE TABLE shared_tokens (
  id TEXT PRIMARY KEY,
  token TEXT UNIQUE NOT NULL,
  user_id TEXT REFERENCES users(id),
  connection_data TEXT NOT NULL,
  expires_at TIMESTAMP,
  max_uses INTEGER,
  use_count INTEGER DEFAULT 0,
  is_active BOOLEAN DEFAULT true,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

Commit: d80c319 - "Add QR Code Generation Service (FRE-301)"

FRE-17: Add Memory-Efficient Model Loading ✅

Status: Complete

Implementation Summary:

Added memory-efficient model loading to support GPUs with <8GB VRAM.

File Modified:

src/generation/tts_model.py - Added memory optimization features

New Parameters:

memory_efficient (bool, default=True): Enable all memory-saving features
use_gradient_checkpointing (bool, default=False): Trade compute for memory
Enhanced dtype support with auto-selection based on available GPU memory

New Methods:

_check_gpu_memory(): Returns (total_gb, available_gb)
_select_optimal_dtype(available_gb): Auto-selects fp32/bf16/fp16
get_memory_stats(): Returns dict with current GPU memory usage
estimate_model_memory(): Returns estimated memory for different precisions

Features:

Auto-detects GPU memory and selects optimal dtype (bf16 for Ampere+, fp16 otherwise)
Graceful degradation: fp32 → bf16 → fp16 based on available memory
Enhanced OOM error messages with actionable suggestions
Memory stats reported on load/unload
Gradient checkpointing support for training scenarios

Memory Estimates:

FP32: ~6.8GB (1.7B params × 4 bytes + overhead)
FP16/BF16: ~3.9GB (50% reduction)
Minimum recommended: 4GB VRAM

Commit: 11e1f0c - "Add memory-efficient model loading (FRE-17)"

Notes

QR code service verified to load correctly
FRE-17 syntax validated, ready for integration testing
FRE-12 code review improvements completed:
- Fixed hardcoded subscriptionStatus="free" → now fetched from database
- Fixed hardcoded demo user data in notifications → uses real user/job data
FRE-312 has active run queued - will be handled separately
FRE-16 pending (low priority) - batch processing optimization

Commits Today

d80c319 - Add QR Code Generation Service (FRE-301)
11e1f0c - Add memory-efficient model loading (FRE-17)
24f56e0 - Fix hardcoded values in jobs API (FRE-12)

4.6 KiB Raw Blame History Unescape Escape