fix: Compatibility fixes necessary to run 'npm install -g' for CLI

[rossigee]

Fix Compatibility Issues After Main Branch Merge

Description

This PR fixes compatibility issues that arose after merging the latest changes from the main branch. The changes ensure the CLI continues to work correctly with updated dependencies.

Changes Made

exponentialBackoff.ts

• Removed usage of deprecated isResponsesModel and responsesStream from @continuedev/openai-adapters
• Simplified the chat completion streaming logic to use only the standard chatCompletionStream method
• This aligns with the latest openai-adapters API changes

Why These Changes Are Needed

These compatibility fixes became necessary after merging recent main branch changes that included updates to the openai-adapters package API. Without this fix, the CLI would fail to build due to the removal of the isResponsesModel export.

Testing

• The CLI builds successfully with npm run build
• All existing functionality is preserved

Related Issues

These changes are compatibility fixes and prevent build failures after main branch merges.

---

Summary by cubic

Fix CLI compatibility with the latest @continuedev/openai-adapters so global installs (npm install -g) work again. Removed deprecated responsesStream/isResponsesModel usage and now always stream via chatCompletionStream.

[rossigee]

Without this, npm install -g in the cli folder gives me:

npm error ✓ Validation passed with warnings.
npm error ✘ [ERROR] No matching export in "../../packages/openai-adapters/dist/index.js" for import "isResponsesModel"
npm error
npm error     src/util/exponentialBackoff.ts:1:21:
npm error       1 │ import { BaseLlmApi, isResponsesModel } from "@continuedev/openai-a...
npm error         ╵                      ~~~~~~~~~~~~~~~~
npm error
npm error Build failed: Error: Build failed with 1 error:
npm error src/util/exponentialBackoff.ts:1:21: ERROR: No matching export in "../../packages/openai-adapters/dist/index.js" for import "isResponsesModel"
npm error     at failureErrorWithLog (/home/rossg/src/continue/extensions/cli/node_modules/esbuild/lib/main.js:1467:15)
npm error     at /home/rossg/src/continue/extensions/cli/node_modules/esbuild/lib/main.js:926:25
npm error     at runOnEndCallbacks (/home/rossg/src/continue/extensions/cli/node_modules/esbuild/lib/main.js:1307:45)
npm error     at buildResponseToResult (/home/rossg/src/continue/extensions/cli/node_modules/esbuild/lib/main.js:924:7)
npm error     at /home/rossg/src/continue/extensions/cli/node_modules/esbuild/lib/main.js:951:16
npm error     at responseCallbacks.<computed> (/home/rossg/src/continue/extensions/cli/node_modules/esbuild/lib/main.js:603:9)
npm error     at handleIncomingPacket (/home/rossg/src/continue/extensions/cli/node_modules/esbuild/lib/main.js:658:12)
npm error     at Socket.readFromStdout (/home/rossg/src/continue/extensions/cli/node_modules/esbuild/lib/main.js:581:7)
npm error     at Socket.emit (node:events:524:28)
npm error     at addChunk (node:internal/streams/readable:561:12) {
npm error   errors: [Getter/Setter],
npm error   warnings: [Getter/Setter]
npm error }

[cubic-dev-ai]

No issues found across 1 file