fix: walk up directory tree to find manifest.json

lib/manifest.ts

@@ -1,20 +1,47 @@
 import fs from "node:fs";
+import path from "node:path";
 import { PluginManifest } from "../types/manifest.js";
 
 let cachedManifest: PluginManifest | null | undefined;
 
+/**
+ * Walks up from `startDir` looking for a file named `manifest.json`
+ * that contains an `id` field (Obsidian plugin manifest).
+ * Returns the parsed manifest, or null if none is found.
+ */
+function findManifest(startDir: string): PluginManifest | null {
+    let dir = startDir;
+
+    while (true) {
+        const candidate = path.join(dir, "manifest.json");
+
+        try {
+            const data = fs.readFileSync(candidate, "utf8");
+            const parsed = JSON.parse(data);
+
+            // Obsidian plugin manifests always have an `id` field —
+            // skip unrelated manifest.json files (e.g. Chrome extensions).
+            if (parsed && typeof parsed === "object" && typeof parsed.id === "string") {
+                return parsed as PluginManifest;
+            }
+        } catch {
+            // File doesn't exist or isn't valid JSON — keep walking.
+        }
+
+        const parent = path.dirname(dir);
+        if (parent === dir) {
+            // Reached filesystem root without finding a manifest.
+            return null;
+        }
+        dir = parent;
+    }
+}
+
 export function getManifest(): PluginManifest | null {
     if (cachedManifest !== undefined) {
         return cachedManifest;
     }
 
-    try {
-        const data = fs.readFileSync("manifest.json", "utf8");
-        cachedManifest = JSON.parse(data);
-        return cachedManifest as PluginManifest;
-    } catch (err) {
-        console.error("Failed to load JSON file:", err);
-        cachedManifest = null;
-        return cachedManifest;
-    }
+    cachedManifest = findManifest(process.cwd());
+    return cachedManifest;
 }