fix(replica): promote LTX upload log to Info level with size field

[benbjohnson]

Summary

• Promotes the LTX file upload log from Debug to Info level for better operational visibility
• Uses fields from the returned WriteLTXFileInfo struct (Level, MinTXID, MaxTXID, Size) instead of local variables
• Adds file size to the log output for monitoring upload sizes

Test plan

• Verify go build ./... passes
• Verify go test -race ./... passes
• Confirm Info-level logs appear during normal replication

🤖 Generated with Claude Code

[github-actions]

PR Build Metrics

✅ All clear — no issues detected

Check	Status	Summary
Binary size	✅	35.82 MB (0.0 KB / 0.00%)
Dependencies	✅	No changes
Vulnerabilities	✅	None detected
Go toolchain	✅	1.24.13 (latest)
Module graph	✅	1204 edges (0)

Binary size details

	Size	Change
Base (0b3facd)	35.82 MB
PR (5a2869a)	35.82 MB	0.0 KB (0.00%)

Dependency changes

No dependency changes.

govulncheck output

No vulnerabilities found.

Build info

Metric	Value
Build time	42s
Go version	go1.24.13
Commit	5a2869a

History (1 previous)

Commit	Updated	Status	Summary
409f33b	2026-03-03 21:31 UTC	✅	35.82 MB (0.0 KB / 0.00%)

--- _{🤖 Updated on each push.}