fix: sanitize ChromaDB URL and update docker-compose CORS config

- src/semantic-cache.ts: Add robust URL sanitization in initialize().
  Trim whitespace and reject malformed URLs (e.g. empty host like
  'http://:8666') before passing to ChromaClient.

- src/main.ts: Validate ChromaDB URL in the settings tab onChange.
  Fall back to 'http://localhost:8000' if the value is empty or lacks
  '://'.

- docker-compose.yml: Add CHROMA_SERVER_CORS_ALLOW_ORIGINS=["*"] to
  allow cross-origin requests from Obsidian's app://obsidian.md origin.

docker-compose.yml

@@ -2,10 +2,11 @@ services:
   chroma:
     image: chromadb/chroma:latest
     ports:
-      - "8666:8000"
+      - '8666:8000'
     environment:
       - CHROMA_SERVER_HOST=0.0.0.0
       - CHROMA_SERVER_HTTP_PORT=8000
+      - CHROMA_SERVER_CORS_ALLOW_ORIGINS=["*"]
     volumes:
       - chroma_data:/chroma/chroma
     restart: unless-stopped

main.js

@@ -7947,7 +7947,8 @@ var SemanticCacheService = class _SemanticCacheService {
   async initialize() {
     if (!this.config.enabled) return;
     try {
-      const chromaURL = this.config.chromaURL || "http://localhost:8000";
+      const rawURL = this.config.chromaURL?.trim() || "http://localhost:8000";
+      const chromaURL = rawURL.includes("://") ? rawURL : "http://localhost:8000";
       this.client = new ChromaClient({ path: chromaURL });
       this.collection = await this.client.getOrCreateCollection({
         name: this.config.collectionName,
@@ -9540,7 +9541,8 @@ var OllamaSettingTab = class extends import_obsidian4.PluginSettingTab {
     );
     new import_obsidian4.Setting(containerEl).setName("ChromaDB URL").setDesc("URL for your ChromaDB instance (default: http://localhost:8000)").addText(
       (text) => text.setValue(this.plugin.settings.cacheConfig.chromaURL || "http://localhost:8000").onChange(async (value) => {
-        this.plugin.settings.cacheConfig.chromaURL = value;
+        const trimmed = value.trim();
+        this.plugin.settings.cacheConfig.chromaURL = trimmed && trimmed.includes("://") ? trimmed : "http://localhost:8000";
         await this.plugin.saveSettings();
       })
     );

src/main.ts

@@ -189,7 +189,10 @@ class OllamaSettingTab extends PluginSettingTab {
         text
           .setValue(this.plugin.settings.cacheConfig.chromaURL || 'http://localhost:8000')
           .onChange(async (value) => {
-            this.plugin.settings.cacheConfig.chromaURL = value;
+            const trimmed = value.trim();
+            // Ensure a valid-looking URL; fall back to default if empty or malformed
+            this.plugin.settings.cacheConfig.chromaURL =
+              trimmed && trimmed.includes('://') ? trimmed : 'http://localhost:8000';
             await this.plugin.saveSettings();
           })
       );

src/semantic-cache.ts

@@ -19,7 +19,9 @@ export class SemanticCacheService {
     if (!this.config.enabled) return;
 
     try {
-      const chromaURL = this.config.chromaURL || 'http://localhost:8000';
+      const rawURL = this.config.chromaURL?.trim() || 'http://localhost:8000';
+      // Guard against malformed URLs like 'http://:8666'
+      const chromaURL = rawURL.includes('://') ? rawURL : 'http://localhost:8000';
       this.client = new ChromaClient({ path: chromaURL });
       this.collection = await this.client.getOrCreateCollection({
         name: this.config.collectionName,