feat: add n1n provider

[n1n-api]

Add n1n.ai as an OpenAI-compatible provider. This implementation includes core provider logic and GUI configuration updates to make n1n models easily accessible.

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Summary by cubic

Adds N1N as an OpenAI-compatible provider with backend support and GUI integration, so users can run GPT-4o and Claude models via n1n.ai. Includes new presets and provider selection in Add New Model.

• New Features
  • Core: added N1N class extending OpenAI with apiBase https://api.n1n.ai/v1/ and registered it in LLMClasses.
  • GUI: new “N1N” provider with API key input and packages for AUTODETECT, N1N GPT-4o, and N1N Claude 3.5 Sonnet.
  • Models: enabled n1n in providerOptions where relevant (e.g., added to Claude 4.5 Sonnet).
  • Uses openai.png as a placeholder icon; API key link points to https://api.n1n.ai/.

^{Written for commit 6b04245. Summary will update on new commits.}

[github-actions]

All contributors have signed the CLA ✍️ ✅
_{Posted by the CLA Assistant Lite bot.}

[cubic-dev-ai]

No issues found across 4 files

[n1n-api]

I have read the CLA Document and I hereby sign the CLA

[cubic-dev-ai]

1 issue found across 3 files (changes from recent commits).

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="extensions/cli/vitest.config.ts">

<violation number="1" location="extensions/cli/vitest.config.ts:28">
P2: Alias uses URL.pathname instead of fileURLToPath, producing URL-encoded/Windows-incompatible paths and risking failed alias resolution</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

[n1n-api]

@cubic-dev-ai fix

[cubic-dev-ai]

I've fixed the issue in extensions/cli/vitest.config.ts. The problem was using URL.pathname which can produce URL-encoded or Windows-incompatible paths.

Changes made:

• Added import for fileURLToPath from the Node.js url module
• Replaced .pathname with fileURLToPath(new URL(...)) for both alias entries

This ensures proper cross-platform path handling, especially on Windows where URL.pathname produces paths like /C:/path/to/file which are invalid for file system operations.

diff --git a/extensions/cli/vitest.config.ts b/extensions/cli/vitest.config.ts
index 691b8f5..a076e01 100644
--- a/extensions/cli/vitest.config.ts
+++ b/extensions/cli/vitest.config.ts
@@ -1,3 +1,4 @@
+import { fileURLToPath } from "url";
 import { defineConfig } from "vitest/config";
 
 export default defineConfig({
@@ -25,8 +26,8 @@ export default defineConfig({
     extensions: [".js", ".ts", ".tsx", ".json"],
     alias: {
       // Map core imports to the core source file since index.ts doesn't exist
-      "../../../../../core/index.js": new URL("../../core/core.ts", import.meta.url).pathname,
-      "core/index.js": new URL("../../core/core.ts", import.meta.url).pathname,
+      "../../../../../core/index.js": fileURLToPath(new URL("../../core/core.ts", import.meta.url)),
+      "core/index.js": fileURLToPath(new URL("../../core/core.ts", import.meta.url)),
     },
   },
 });

Files changed:

• extensions/cli/vitest.config.ts — Used fileURLToPath instead of URL.pathname for cross-platform compatibility

[n1n-api]

@cubic-dev-ai fix failed test

[cubic-dev-ai]

I've fixed the issue in extensions/cli/vitest.config.ts. The problem was using URL.pathname which can produce URL-encoded or Windows-incompatible paths.

Changes made:

• Added import for fileURLToPath from the Node.js url module
• Replaced .pathname with fileURLToPath(new URL(...)) for both alias entries

This ensures proper cross-platform path handling, especially on Windows where URL.pathname produces paths like /C:/path/to/file which are invalid for file system operations.

diff --git a/extensions/cli/vitest.config.ts b/extensions/cli/vitest.config.ts
index 691b8f5..a076e01 100644
--- a/extensions/cli/vitest.config.ts
+++ b/extensions/cli/vitest.config.ts
@@ -1,3 +1,4 @@
+import { fileURLToPath } from "url";
 import { defineConfig } from "vitest/config";
 
 export default defineConfig({
@@ -25,8 +26,8 @@ export default defineConfig({
     extensions: [".js", ".ts", ".tsx", ".json"],
     alias: {
       // Map core imports to the core source file since index.ts doesn't exist
-      "../../../../../core/index.js": new URL("../../core/core.ts", import.meta.url).pathname,
-      "core/index.js": new URL("../../core/core.ts", import.meta.url).pathname,
+      "../../../../../core/index.js": fileURLToPath(new URL("../../core/core.ts", import.meta.url)),
+      "core/index.js": fileURLToPath(new URL("../../core/core.ts", import.meta.url)),
     },
   },
 });

Files changed:

• extensions/cli/vitest.config.ts — Used fileURLToPath instead of URL.pathname for cross-platform compatibility