docs(oracle): update CHANGELOG, README, and ROADMAP for v0.9 Oracle support

Author: iamvirul

CHANGELOG.md

@@ -7,7 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-## [0.9] - 2026-03-19
+## [0.9] - 2026-03-21
 
 ### Added
 - **Oracle Database Support** (issue #14)
@@ -346,7 +346,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - PostgreSQL schema-aware queries
 - MySQL foreign key check handling
 
-[Unreleased]: https://github.com/iamvirul/deepdiff-db/compare/v0.7...HEAD
+[Unreleased]: https://github.com/iamvirul/deepdiff-db/compare/v0.9...HEAD
+[0.9]: https://github.com/iamvirul/deepdiff-db/compare/v0.8...v0.9
+[0.8]: https://github.com/iamvirul/deepdiff-db/compare/v0.7...v0.8
 [0.7]: https://github.com/iamvirul/deepdiff-db/compare/v0.6.1...v0.7
 [0.6.1]: https://github.com/iamvirul/deepdiff-db/compare/v0.6...v0.6.1
 [0.6]: https://github.com/iamvirul/deepdiff-db/compare/v0.5...v0.6

ROADMAP.md

@@ -10,7 +10,7 @@ We release a new version every **Saturday**. Each release includes one or more f
 
 ## Current Status: v0.9
 
-**Last Release:** 2026-03-19
+**Last Release:** 2026-03-21
 
 **Current Features:**
 - Schema drift detection and standalone schema migration (`schema-migrate`)
@@ -135,7 +135,7 @@ We release a new version every **Saturday**. Each release includes one or more f
 
 ---
 
-### ~~v0.9: Oracle Support~~ ✅ Released 2026-03-19
+### ~~v0.9: Oracle Support~~ ✅ Released 2026-03-21
 
 **Features delivered:**
 - Oracle Database driver (`sijms/go-ora/v2`) — pure Go, no Instant Client required
@@ -261,5 +261,5 @@ If you'd like to contribute to any of these features, please:
 
 ---
 
-**Last Updated:** 2026-03-19
+**Last Updated:** 2026-03-21