chore(deps): update ghcr.io/multica-ai/multica-backend docker tag to v0.4.12

[renovate]

This PR contains the following updates:

Package	Update	Change
ghcr.io/multica-ai/multica-backend	patch	v0.4.11 → v0.4.12

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Release Notes

multica-ai/multica (ghcr.io/multica-ai/multica-backend)

v0.4.12

Compare Source

Changelog

• e52b506 docs(changelog): add v0.4.12 release entry (2026-07-27) (MUL-5364) (#​5996)
• 4931ee6 docs(chat): correct the chat sandbox description (MUL-5287) (#​5956)
• 3d4c5c7 feat(cli): add 'multica agent copy' to fork an agent across runtimes (MUL-5279) (#​5961)
• 38b08ac feat(diagnostics): report which page a desktop hang happened on (MUL-5345) (#​5989)
• a964c52 feat(editor): pan/zoom the image attachment preview (MUL-5316) (#​5971)
• ef69c3d feat(projects): add search and max-height to the project picker (MUL-5344) (#​5979)
• 286ed61 fix(agent): reap claude process group on cancellation (#​5918) [MUL-5288] (#​5957)
• 156c592 fix(attachments): presign desktop inline media (#​5946)
• 85a14cd fix(daemon): gate codex session pointer writes on rollout presence (MUL-5305) (#​5960)
• a1bd3ca fix(editor): allow spaces in mention search (#​5980)
• 49fd6cd fix(handler,service): return 409/coalesced instead of 500 on duplicate-key violations (MUL-5285) (#​5958)
• 6da0407 fix(issues): keep issue row pages in sync on observer reattach (MUL-5341) (#​5978)
• c7fe10e fix(issues): move the thread quick-jump rail to the right edge (MUL-4522) (#​5990)
• 2294f45 fix(kiro): recover from oversized-history-image session resume failures
• 6004817 fix(lark): ingest inbound images and videos as chat attachments (MUL-4934) (#​5580)
• 4581e9e fix(server): surface real reason for failed quick-create (MUL-5268) (#​5898)
• 67d3952 fix(transcript): auto-follow live task output in transcript dialog (#​5932)
• 982a8c5 perf(ci): split frontend jobs and cache turbo results (MUL-5347) (#​5982)
• af1ff00 test(cli): use example domains in setup fixtures (#​5944)
• 1869b1b test(issues): give table-view editor test 60s to survive CI CPU starvation (MUL-5326) (#​5964)

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