docs: update README with version and add CHANGELOG for v1.0.0-beta2

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## v1.0.0-beta2 - 2025-12-19
+
+- UI
+  - Reordered "Schedule & Dates": Start Date → Schedule Confidence → Due Date/Due Time → Due Date Source.
+  - Moved "Company & Contact Information" directly under "Basic Information".
+  - Updated footer version text to v1.0.0-beta2.
+- Ops
+  - Systemd service now uses `EnvironmentFile` for production env vars; fixed `EnvironmentFile` typo and validated permissions.
+  - Switched service restart policy to `Restart=always` for resilience.
+  - Confirmed service listens on `PORT` (default 4000) and added guidance for restarts after env changes.
+- Excel Sync
+  - Addressed column mismatch errors by refreshing Excel table column cache on service restart; sync confirmed working.
+- Versioning
+  - Bumped `package.json` to `1.0.0-beta2` and created git tag `v1.0.0-beta2`.
+
+## v1.0.0-beta1 - 2025-12-15
+
+- Initial beta with form submission, PocketBase create, and Excel table sync.

README.md

@@ -1,5 +1,9 @@
 # Job Creation Form with Excel Sync
 
+> Current Version: v1.0.0-beta2
+
+See CHANGELOG.md for release notes.
+
 **Unified system** that combines job creation form with immediate Excel synchronization.
 
 ## Architecture