fix(appthemes): take Obsidian vaults from its registry, not a directory scanHEADmaster

The installer found vaults by scanning ~/Documents/Obsidian for .obsidian
directories, which cannot tell a vault from a leftover. That parent folder
holds an abandoned .obsidian from a vault that no longer exists, so the scan
found six vaults where Obsidian knows five, and the extra one got a snippet
and an edited appearance.json for something Obsidian never opens.

It now reads ~/.config/obsidian/obsidian.json, which is the list Obsidian
itself maintains, and only writes to a path that is both registered and still
has a .obsidian directory.

The stray directory has been restored to its previous contents.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015gbjA2bmswN8jyPDKzrvqe

1 files changed, 20 insertions, 6 deletions

diff --git a/bin/udt-appthemes b/bin/udt-appthemes
index eedc144..37d3e63 100755
--- a/bin/udt-appthemes
+++ b/bin/udt-appthemes
@@ -17,19 +17,33 @@ from pathlib import Path
 
 REPO = Path(__file__).resolve().parent.parent
 SNIPPET = "udt"
-VAULT_ROOT = Path.home() / "Documents" / "Obsidian"
+OBSIDIAN_REGISTRY = Path.home() / ".config" / "obsidian" / "obsidian.json"
 TYPORA_THEMES = Path.home() / ".config" / "Typora" / "themes"
 
 
 def vaults():
-    """Every Obsidian vault under the vault root.
+    """The vaults Obsidian itself knows about.
 
-    A vault is any directory holding a .obsidian config dir. Nested vaults are
-    real: a vault inside another vault's folder is still its own vault.
+    Read from Obsidian's own registry rather than found by scanning for
+    .obsidian directories. A scan cannot tell a vault from an abandoned one:
+    ~/Documents/Obsidian holds a leftover .obsidian from a vault that no longer
+    exists, and writing to it touched config for something Obsidian never
+    opens.
     """
-    if not VAULT_ROOT.is_dir():
+    try:
+        data = json.loads(OBSIDIAN_REGISTRY.read_text())
+    except (OSError, json.JSONDecodeError):
         return []
-    return sorted(p for p in VAULT_ROOT.rglob(".obsidian") if p.is_dir())
+
+    found = []
+    for entry in data.get("vaults", {}).values():
+        path = entry.get("path")
+        if not path:
+            continue
+        config = Path(path) / ".obsidian"
+        if config.is_dir():
+            found.append(config)
+    return sorted(found)
 
 
 def install_obsidian(source):