Initial commit: Lookbook personal collection app

Pinterest-like app for saving images, videos, quotes, and embeds.

Features:
- Go backend with PostgreSQL, SSR templates
- Console-based admin auth (login/logout via browser console)
- Item types: images, videos (ffmpeg transcoding), quotes, embeds
- Media stored as BLOBs in PostgreSQL
- OpenGraph metadata extraction for links
- Embed detection for YouTube, Vimeo, Twitter/X
- Masonry grid layout, item detail pages
- Tag system with filtering
- Refresh metadata endpoint with change warnings
- Replace media endpoint for updating item images/videos

internal/data/session/queries.go

@@ -0,0 +1,73 @@
+package session
+
+import (
+	"context"
+	"database/sql"
+	"time"
+)
+
+type Row struct {
+	ID        int64
+	SessionID string
+	CreatedAt time.Time
+	ExpiresAt time.Time
+}
+
+// QCreate creates a new session.
+func QCreate(ctx context.Context, db *sql.DB, sessionID string, expiresAt time.Time) (Row, error) {
+	query := `
+		INSERT INTO session (session_id, expires_at)
+		VALUES ($1, $2)
+		RETURNING id, session_id, created_at, expires_at
+	`
+
+	var row Row
+	err := db.QueryRowContext(ctx, query, sessionID, expiresAt).Scan(
+		&row.ID,
+		&row.SessionID,
+		&row.CreatedAt,
+		&row.ExpiresAt,
+	)
+	return row, err
+}
+
+// QFindBySessionID finds a session by its session ID.
+// Returns (nil, nil) if the session does not exist.
+func QFindBySessionID(ctx context.Context, db *sql.DB, sessionID string) (*Row, error) {
+	query := `
+		SELECT id, session_id, created_at, expires_at
+		FROM session
+		WHERE session_id = $1
+		LIMIT 1
+	`
+
+	var row Row
+	err := db.QueryRowContext(ctx, query, sessionID).Scan(
+		&row.ID,
+		&row.SessionID,
+		&row.CreatedAt,
+		&row.ExpiresAt,
+	)
+	if err == sql.ErrNoRows {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	return &row, nil
+}
+
+// QDelete deletes a session by its session ID.
+func QDelete(ctx context.Context, db *sql.DB, sessionID string) error {
+	query := `DELETE FROM session WHERE session_id = $1`
+	_, err := db.ExecContext(ctx, query, sessionID)
+	return err
+}
+
+// QDeleteExpired deletes all expired sessions.
+func QDeleteExpired(ctx context.Context, db *sql.DB) error {
+	query := `DELETE FROM session WHERE expires_at < NOW()`
+	_, err := db.ExecContext(ctx, query)
+	return err
+}