1 files changed, 52 insertions, 0 deletions
diff --git a/modules/core/virtual-fs.js b/modules/core/virtual-fs.js
index d2d3103..3ab25b1 100644
--- a/modules/core/virtual-fs.js
+++ b/modules/core/virtual-fs.js
@@ -3,6 +3,7 @@ class VirtualFileSystem {
         this.root = { type: 'dir', content: {} };
         this.currentPath = [];
         this._ready = this.loadFromStorage();
+        this._conceptCache = null;
     }
     _u8ToBase64(u8) {
         let s = '';
@@ -82,6 +83,27 @@ class VirtualFileSystem {
             } catch (e) { console.error('FS save error:', e); }
         }, 2000);
     }
+    getCurrentPath() {
+        return '/' + this.currentPath.join('/');
+    }
+    setCurrentPath(path) {
+        const segs = this._toAbsoluteSegments(path);
+        if (segs === null) return false;
+        this.currentPath = segs;
+        return true;
+    }
+    _loadConceptIndex() {
+        if (this._conceptCache) return this._conceptCache;
+        try {
+            const raw = this.readFile('/.semantic_index/map.json');
+            if (raw) {
+                this._conceptCache = JSON.parse(raw);
+                return this._conceptCache;
+            }
+        } catch (e) {}
+        return null;
+    }
+    _clearConceptCache() { this._conceptCache = null; }
     getCurrentDir() {
         let dir = this.root;
         for (let part of this.currentPath) {
@@ -130,6 +152,18 @@ class VirtualFileSystem {
         return dir;
     }
     ls(path) {
+        // concept:// listing
+        if (path && path.startsWith('concept://')) {
+            const concept = path.replace('concept://', '').replace(/\/.*$/, '').toLowerCase();
+            const index = this._loadConceptIndex();
+            if (!index) return [];
+            let matches = index[concept] || [];
+            if (matches.length === 0) {
+                const fuzzy = Object.keys(index).filter(k => k.includes(concept) || concept.includes(k));
+                if (fuzzy.length > 0) matches = index[fuzzy[0]];
+            }
+            return (matches || []).map(m => ({ name: m.path.split('/').pop(), type: 'file', path: m.path, size: 0, concept: true }));
+        }
         let dir;
         if (path) {
             const resolved = this._resolvePath(path);
@@ -161,6 +195,24 @@ class VirtualFileSystem {
         return true;
     }
     readFile(path) {
+        // concept:// URI resolution
+        if (path && path.startsWith('concept://')) {
+            const concept = path.replace('concept://', '').replace(/\/.*$/, '').toLowerCase();
+            try {
+                const index = this._loadConceptIndex();
+                if (!index) return 'No semantic index found. Run nvfs-index first.';
+                let matches = index[concept];
+                if (!matches) {
+                    const fuzzy = Object.keys(index).filter(k => k.includes(concept) || concept.includes(k));
+                    if (fuzzy.length > 0) matches = index[fuzzy[0]];
+                }
+                if (!matches || matches.length === 0) return `No files found for concept "${concept}"`;
+                const first = matches[0];
+                const content = this.readFile(first.path);
+                if (content) return `--- ${first.path} (concept://${concept}) ---\n${content}`;
+                return `Concept "${concept}" → ${matches.length} file(s):\n${matches.map(m => `  ${m.path} — ${m.summary || ''}`).join('\n')}`;
+            } catch (e) { return `concept:// error: ${e.message}`; }
+        }
         const resolved = this._resolvePath(path);
         if (!resolved || !resolved.name) return null;
         const node = resolved.dir.content[resolved.name];