GitHub bridge: push then pull duplicates comments (bugs dedupe correctly, comments do not) — v0.10.1 #1582

Summary

A GitHub-bridge push followed by pull re-imports the pushed comments as new operations, so every round trip adds one duplicate comment per already-commented bug. Bugs themselves are not duplicated — #690 / #726 appear to hold — the regression is comment-scoped only.

Version

• git-bug version: v0.10.1
• Windows 11 (26200), GitHub bridge, token auth

Steps to reproduce

1. A repo with existing bugs, at least one carrying a comment beyond the description (i.e. comments >= 2 in git-bug bug --format json).
2. Create an empty GitHub repo and configure a bridge to it:

   gh auth token | git-bug bridge new --name sandbox --target github \
     --owner <owner> --project <repo> --login <login> --token-stdin --non-interactive

3. Push:

   git-bug bridge push sandbox      # -> "exported 20 issues"

4. Pull straight back:

   git-bug bridge pull sandbox

Expected

pull recognises the issues/comments it just exported (via the stored bridge metadata) and imports nothing for them.

Actual

pull emits new comment operations for bugs that were just exported:

[471b7a9] new comment: 437e13b7...
[5988ea1] new comment: 559c858e...
[5988ea1] changed status with op: c04b2dae...
[7cd1ae6] new comment: 72c1d51e...
[7cd1ae6] changed status with op: d28db44d...
imported 2 issues and 0 identities with sandbox bridge

Comment counts before vs after the round trip (only the 3 bugs that had comments):

The 2 genuinely GitHub-native issues imported correctly — that part is right. Status-change operations are also re-applied on several bugs.

Each further push/pull cycle adds another duplicate, so comment history inflates monotonically and bidirectional sync is not idempotent.

Notes

• The description (comment[0]) maps correctly to the issue body and comment[1..] to GitHub comments on export — export fidelity itself is good (bodies, open/closed status, and comments all transferred).
• Only the re-import side fails to deduplicate.