Initial commit of Descrybe v2 without local scratch artifacts.

Drop one-shot tmp/axe scripts and agent i18n scratch so the Gitea tree is deployable.

apps/api/cmd/migrator/mysqlmeta.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"strings"
+)
+
+// mysqlCol returns a quoted column name if present, otherwise a SQL literal/expression fallback.
+func mysqlCol(ctx context.Context, db *sql.DB, table, column, fallbackExpr string) string {
+	if mysqlColumnExists(ctx, db, table, column) {
+		q, err := quoteMySQLIdent(column)
+		if err != nil {
+			return fallbackExpr
+		}
+		return q
+	}
+	return fallbackExpr
+}
+
+// mysqlCoalesce returns COALESCE(column, fallback) when column exists, else fallback alone.
+func mysqlCoalesce(ctx context.Context, db *sql.DB, table, column, fallbackExpr string) string {
+	if mysqlColumnExists(ctx, db, table, column) {
+		q, err := quoteMySQLIdent(column)
+		if err != nil {
+			return fallbackExpr
+		}
+		return fmt.Sprintf("COALESCE(%s, %s)", q, fallbackExpr)
+	}
+	return fallbackExpr
+}
+
+// mysqlSelectList builds "SELECT a, b, ..." from expressions (already resolved).
+func mysqlSelectList(exprs ...string) string {
+	return "SELECT " + strings.Join(exprs, ", ")
+}
+
+// scanIntish scans MySQL INT/DECIMAL/string numeric values into an int.
+func scanIntish(v any) int {
+	switch x := v.(type) {
+	case int64:
+		return int(x)
+	case int32:
+		return int(x)
+	case float64:
+		return int(x)
+	case []byte:
+		var n float64
+		if _, err := fmt.Sscanf(string(x), "%f", &n); err == nil {
+			return int(n)
+		}
+	case string:
+		var n float64
+		if _, err := fmt.Sscanf(x, "%f", &n); err == nil {
+			return int(n)
+		}
+	}
+	return 0
+}
+
+// queryFirstOK tries queries in order until one succeeds (for column-shape fallbacks).
+func queryFirstOK(ctx context.Context, db *sql.DB, queries ...string) (*sql.Rows, error) {
+	var last error
+	for _, q := range queries {
+		rows, err := db.QueryContext(ctx, q)
+		if err == nil {
+			return rows, nil
+		}
+		last = err
+	}
+	if last == nil {
+		return nil, fmt.Errorf("no queries provided")
+	}
+	return nil, last
+}