Phase 4: Extract magic numbers to constants

Create config/constants.go with centralized configuration values:
- Concurrency limits (MaxConcurrentTrelloRequests)
- Timeouts (HTTP, Google Calendar, graceful shutdown, request)
- Meal times (breakfast, lunch, dinner hours)
- Database pool settings (connections, lifetime)
- Session and rate limiting settings

Update all files to use these constants instead of hardcoded values.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/internal/store/sqlite.go b/internal/store/sqlite.go
index 12aa1ce..c2f6e98 100644
--- a/internal/store/sqlite.go
+++ b/internal/store/sqlite.go
@@ -13,6 +13,7 @@ import (
 
 	_ "github.com/mattn/go-sqlite3"
 
+	"task-dashboard/internal/config"
 	"task-dashboard/internal/models"
 )
 
@@ -47,9 +48,9 @@ func New(dbPath, migrationDir string) (*Store, error) {
 
 	// Configure connection pool for SQLite with WAL mode
 	// WAL allows concurrent reads, but writes still need serialization
-	db.SetMaxOpenConns(5)
-	db.SetMaxIdleConns(2)
-	db.SetConnMaxLifetime(time.Hour)
+	db.SetMaxOpenConns(config.SQLiteMaxOpenConns)
+	db.SetMaxIdleConns(config.SQLiteMaxIdleConns)
+	db.SetConnMaxLifetime(config.SQLiteConnMaxLifetime)
 
 	store := &Store{db: db, migrationDir: migrationDir}