Fix vault index: prevent stuck state and wait for layout ready

- VaultSearch.buildIndex(): wrap body in try/finally so this.indexing
  is always reset to false even if an unexpected error occurs. Previously
  any outer exception left indexing=true permanently, blocking all retries.
- main.ts: replace unreliable setTimeout(3000) with onLayoutReady() so
  the index is built only after Obsidian's vault cache is fully resolved.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

main.js

@@ -510,6 +510,7 @@ var VaultSearch = class {
     this.docVectors.clear();
     this.idf.clear();
     this.docContents.clear();
+    try {
       const files = this.app.vault.getMarkdownFiles();
       const total = files.length;
       const df = /* @__PURE__ */ new Map();
@@ -561,9 +562,11 @@ var VaultSearch = class {
         this.docVectors.set(path, vec);
       }
       this.indexed = true;
-    this.indexing = false;
       if (this.onProgress)
         this.onProgress(total, total);
+    } finally {
+      this.indexing = false;
+    }
   }
   isIndexed() {
     return this.indexed;
@@ -865,11 +868,11 @@ var MemexChatPlugin = class extends import_obsidian4.Plugin {
       }
     });
     this.addSettingTab(new MemexChatSettingsTab(this.app, this));
-    setTimeout(() => {
+    this.app.workspace.onLayoutReady(() => {
       if (!this.search.isIndexed()) {
         this.search.buildIndex().catch(console.error);
       }
-    }, 3e3);
+    });
     console.log("[Memex Chat] Plugin geladen");
   }
   onunload() {

src/VaultSearch.ts

@@ -59,6 +59,7 @@ export class VaultSearch {
     this.idf.clear();
     this.docContents.clear();
 
+    try {
       const files = this.app.vault.getMarkdownFiles();
       const total = files.length;
       const df: Map<string, number> = new Map(); // term -> doc count
@@ -121,8 +122,11 @@ export class VaultSearch {
       }
 
       this.indexed = true;
-    this.indexing = false;
       if (this.onProgress) this.onProgress(total, total);
+    } finally {
+      // Always reset indexing so retries are possible if an error occurred
+      this.indexing = false;
+    }
   }
 
   isIndexed(): boolean {

src/main.ts

@@ -73,12 +73,12 @@ export default class MemexChatPlugin extends Plugin {
     // Settings tab
     this.addSettingTab(new MemexChatSettingsTab(this.app, this));
 
-    // Build index in background after startup
+    // Build index once the workspace layout (and vault cache) is fully ready
-    setTimeout(() => {
+    this.app.workspace.onLayoutReady(() => {
       if (!this.search.isIndexed()) {
         this.search.buildIndex().catch(console.error);
       }
-    }, 3000);
+    });
 
     console.log("[Memex Chat] Plugin geladen");
   }