feat: add ClawRouter provider + fix out-of-credits dialog API key guidance

[1bcMax]

Summary

• Adds ClawRouter as a new LLM provider (pay-per-call via x402 micropayments)
• Fixes the out-of-credits dialog (issue Error: Claude Sonnet 4.5 - 402 #11952): when a user hits a 402 from continue-proxy, they now see both a "Purchase Credits" option and an "Add API key secret" button with instructions to switch to the direct anthropic provider
• Fixes string mismatch: StreamErrorDialog now matches both the legacy "You're out of credits!" and the current "You have no credits remaining on your Continue account" strings
• Adds a generic 402 handler in errorAnalysis for non-proxy providers (e.g. DeepSeek insufficient balance)
• Removes auto-retry on overloaded errors (was masking failures)
• Adds component tests for OutOfCreditsDialog and StreamErrorDialog

Test plan

• All 77 related tests pass (errorAnalysis, OutOfCreditsDialog, StreamErrorDialog)
• Out-of-credits dialog shows both "Purchase Credits" and "Add API key secret" buttons
• Switching provider from continue-proxy to anthropic with own API key resolves 402
• ClawRouter provider connects and streams via x402

Closes #11952

🤖 Generated with Claude Code

---

Summary by cubic

Adds clawrouter as a new provider for automatic, cost-optimized model routing (OpenAI-compatible API at http://localhost:1337/v1/). Fixes the out-of-credits flow by showing purchase and API key options and handling generic 402s, resolving the loop in #11952.

• New Features

  • New clawrouter provider with default apiBase http://localhost:1337/v1/, routing profiles (blockrun/auto, blockrun/eco, blockrun/premium, blockrun/free), reasoning/tool support, and Continue headers.
  • Integrated across core (llms, autodetect, tool support), openai-adapters/AiSdk, VS Code schema, GUI model presets, and docs.

• Bug Fixes

  • Out-of-credits dialog now shows both "Purchase Credits" and "Add API key secret" with guidance to switch to anthropic; matches legacy and current copy.
  • Generic 402 handling for non-proxy providers and removal of auto-retry on "overloaded" errors to avoid masking failures.
  • Added tests for OutOfCreditsDialog, StreamErrorDialog, and clawrouter adapter/class.

^{Written for commit 266f984. Summary will update on new commits.}

[1bcMax]

Hey @sestinj @Patrick-Erichsen — just wanted to flag that we (@1bcMax) are committed to maintaining the code we've contributed here long-term. That includes the ClawRouter provider, the error handling improvements, and any related tests.

If anything we've shipped causes issues down the line — regressions, conflicts with new features, or anything else — please tag us and we'll handle it promptly. We're here to stay as reliable contributors, not just one-time submitters. 🙏

[cubic-dev-ai]

1 issue found across 21 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="gui/src/pages/AddNewModel/configs/models.ts">

<violation number="1" location="gui/src/pages/AddNewModel/configs/models.ts:2695">
P2: `clawrouterPremium` is incorrectly flagged as open-source despite routing to proprietary models.</violation>
</file>

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

[cubic-dev-ai]

P2: clawrouterPremium is incorrectly flagged as open-source despite routing to proprietary models.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At gui/src/pages/AddNewModel/configs/models.ts, line 2695:

<comment>`clawrouterPremium` is incorrectly flagged as open-source despite routing to proprietary models.</comment>

<file context>
@@ -2679,6 +2679,61 @@ export const models: { [key: string]: ModelPackage } = {
+    },
+    icon: "clawrouter.png",
+    providerOptions: ["clawrouter"],
+    isOpenSource: true,
+  },
+  clawrouterFree: {
</file context>

Suggested change

	isOpenSource: true,
	isOpenSource: false,

[1bcMax]

Hey @RomneyDa — thanks again for merging our previous PR (#11751)! Wanted to loop you in on this follow-up as well.

We're committed to maintaining all the code we've contributed long-term — ClawRouter provider, error handling improvements, and related tests. If anything causes issues down the line, tag us and we'll handle it promptly. 🙏