sync kanvas branch on startup

Signed-off-by: vladmandic <mandic00@live.com>

CHANGELOG.md

@@ -1,8 +1,8 @@
 # Change Log for SD.Next
 
-## Update for 2026-04-20
+## Update for 2026-04-21
 
-### Highlights for 2026-04-20
+### Highlights for 2026-04-21
 
 *What's New?*
 - New models! **Zeta-Chroma**, **ERNIE**, **Nucleus**, **Bria-FIBO**, **Anima-v3**, **SDXS-1B**, **LTX 2.3 v1.1**
@@ -17,7 +17,7 @@ For full details, see [ChangeLog](https://github.com/vladmandic/automatic/blob/m
 
 [ReadMe](https://github.com/vladmandic/automatic/blob/master/README.md) | [ChangeLog](https://github.com/vladmandic/automatic/blob/master/CHANGELOG.md) | [Docs](https://vladmandic.github.io/sdnext-docs/) | [WiKi](https://github.com/vladmandic/automatic/wiki) | [Discord](https://discord.com/invite/sd-next-federal-batch-inspectors-1101998836328697867) | [Sponsor](https://github.com/sponsors/vladmandic)  
 
-### Details for 2026-04-20
+### Details for 2026-04-21
 
 - **Models**
   - [Zeta-Chroma](https://huggingface.co/lodestones/Zeta-Chroma) pixel-space diffusion transformer image model  
@@ -104,6 +104,7 @@ For full details, see [ChangeLog](https://github.com/vladmandic/automatic/blob/m
 - **Obsoleted**
   - removed *system-info* from *extensions-builtin*
 - **Internal**
+  - sync `kanvas` branch with core branch
   - `history` accepts both latent and pixel entries
   - wrap `hf-download` methods
   - additional *typing* and *typechecks*, thanks @awsr

installer.py

@@ -1363,12 +1363,14 @@ def get_version(force=False):
             subprocess.run('git config log.showsignature false', capture_output=True, shell=True, check=True)
         except Exception:
             pass
+
         try:
             ver = run('git', 'log --pretty=format:"%h %ad" -1 --date=short', check=True)[0].stdout or '  '
             commit, updated = ver.split(' ')
             version['commit'], version['updated'] = commit, updated
         except Exception as e:
             log.warning(f'Version: where=commit {e}')
+
         try:
             origin = run('git', 'remote get-url origin', check=True)[0].stdout
             branch_name = run('git', 'rev-parse --abbrev-ref HEAD', check=True)[0].stdout
@@ -1378,6 +1380,7 @@ def get_version(force=False):
                 log.warning('Version: detached state detected')
         except Exception as e:
             log.warning(f'Version: where=branch {e}')
+
         try:
             if os.path.exists('extensions-builtin/sdnext-modernui'):
                 branch_ui = run('git', 'rev-parse --abbrev-ref HEAD', check=True, cwd='extensions-builtin/sdnext-modernui')[0].stdout
@@ -1387,6 +1390,7 @@ def get_version(force=False):
         except Exception as e:
             log.warning(f'Version: where=modernui {e}')
             version['ui'] = 'unknown'
+
         try:
             if os.environ.get('SD_KANVAS_DISABLE', None) is not None:
                 version['kanvas'] = 'disabled'
@@ -1398,6 +1402,7 @@ def get_version(force=False):
         except Exception as e:
             log.warning(f'Version: where=kanvas {e}')
             version['kanvas'] = 'unknown'
+
     ts('version', t_start)
     return version
 
@@ -1429,6 +1434,33 @@ def check_ui(ver):
     ts('ui', t_start)
 
 
+def check_kanvas(ver):
+    def same(ver):
+        core = ver['branch'] if ver is not None and 'branch' in ver else 'unknown'
+        kanvas = ver['kanvas'] if ver is not None and 'kanvas' in ver else 'unknown'
+        return (core == kanvas) or (core == 'master' and kanvas == 'main') or (core == 'dev' and kanvas == 'dev') or (core == 'HEAD')
+
+    if 'vladmandic/sdnext' not in ver.get('url', ''):
+        return
+    t_start = time.time()
+    if not same(ver):
+        log.debug(f'Branch mismatch: {ver}')
+        try:
+            if 'dev' in ver['branch']:
+                target = 'dev'
+            elif 'main' in ver['branch'] or 'master' in ver['branch']:
+                target = 'main'
+            else:
+                target =None
+            if target:
+                git('checkout ' + target, folder='extensions-builtin/sdnext-kanvas', ignore=True, optional=True)
+                ver = get_version(force=True)
+                log.debug(f'Branch sync: {ver}')
+        except Exception as e:
+            log.debug(f'Branch switch: {e}')
+    ts('kanvas', t_start)
+
+
 def check_venv():
     def try_relpath(p):
         try:
@@ -1480,6 +1512,7 @@ def check_version(reset=True): # pylint: disable=unused-argument
     if args.version or args.skip_git:
         return
     check_ui(ver)
+    check_kanvas(ver)
     commit = git('rev-parse HEAD')
     global git_commit # pylint: disable=global-statement
     git_commit = commit[:7]