Rene Nochebuena 9d8762458c feat(config): expose charset, loc, and parseTime as configurable DSN parameters ...

- add Config.Charset (MYSQL_CHARSET, default "utf8mb4"): connection character set
  sent as SET NAMES during handshake; previously hardcoded
- add Config.Loc (MYSQL_LOC, default "UTC"): IANA timezone for time.Time ↔
  DATE/DATETIME conversion; previously hardcoded
- add Config.ParseTime (MYSQL_PARSE_TIME, default "true"): driver-level DATE/DATETIME
  → time.Time mapping; valid values "true"/"false"; previously hardcoded
- update DSN() to derive parameters from Config fields with empty-means-default
  semantics; existing Config literals produce identical DSN output (backward compatible)
- remove unused url.URL construction from DSN(); params now built directly via url.Values
- document collation DSN limitation in Config godoc, CLAUDE.md, RELEASE.md, CHANGELOG.md:
  go-sql-driver v1.8.x uses 1-byte handshake collation IDs (max 255); MariaDB 11.4+
  collations such as utf8mb4_uca1400_as_cs exceed that range — set collation at the
  database/table level in schema migrations instead

2026-03-20 14:12:24 -06:00

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