feat: introduce opus 4.7 (#682)

* feat: introduce opus 4.7
- Bump claude-agent-sdk from 0.2.59 to 0.2.116
- Forward process.env to SDK subprocess so ANTHROPIC_BASE_URL and other env vars work
- Add claude-opus-4-6 as a distinct mode

* feat: add "claude" as fallback in the cli path

* fix: base url config

server/claude-sdk.js

@@ -149,9 +149,15 @@ function mapCliOptionsToSDK(options = {}) {
 
   const sdkOptions = {};
 
-  if (process.env.CLAUDE_CLI_PATH) {
-    sdkOptions.pathToClaudeCodeExecutable = process.env.CLAUDE_CLI_PATH;
-  }
+  // Forward all host env vars (e.g. ANTHROPIC_BASE_URL) to the subprocess.
+  // Since SDK 0.2.113, options.env replaces process.env instead of overlaying it.
+  sdkOptions.env = { ...process.env };
+
+  // Use CLAUDE_CLI_PATH if explicitly set, otherwise fall back to 'claude' on PATH.
+  // The SDK 0.2.113+ looks for a bundled native binary optional dep by default;
+  // this fallback ensures users who installed via the official installer still work
+  // even when npm prune --production has removed those optional deps.
+  sdkOptions.pathToClaudeCodeExecutable = process.env.CLAUDE_CLI_PATH || 'claude';
 
   // Map working directory
   if (cwd) {

server/tsconfig.json

@@ -4,10 +4,13 @@
     "module": "NodeNext",
     "moduleResolution": "NodeNext",
     "lib": ["ES2022"],
-    "baseUrl": ".",
+    // baseUrl is the project root (one level above this config file) so that tsc-alias
+    // resolves @/ imports relative to the compiled output structure in dist-server/server/.
+    // With rootDir ".." tsc emits server files under dist-server/server/, so paths must
+    // include the "server/" prefix to match that layout.
+    "baseUrl": "..",
     "paths": {
-      // In the backend config, "@" maps to the /server directory itself.
-      "@/*": ["*"]
+      "@/*": ["server/*"]
     },
     // The backend is still mostly JavaScript today, so allowJs lets us add a real
     // TypeScript build without forcing a large rename before the tooling is usable.