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Merge pull request #44 from link-assistant/issue-43-1d50271986ab
fix: Agent auth login does not work
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‎.changeset/fix-auth-login.md‎

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---
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'@link-assistant/agent': patch
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---
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fix: Replace prompts.autocomplete with prompts.select in auth login command
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The `agent auth login` command was failing with `TypeError: prompts.autocomplete is not a function` because `@clack/prompts@0.11.0` does not have the `autocomplete` function (it was added in v1.0.0-alpha.0).
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This fix replaces `prompts.autocomplete()` with `prompts.select()` which is available in the stable version.
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Fixes #43

‎.prettierignore‎

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package-lock.json
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bun.lock
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.eslintcache
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# Git submodules (reference implementations)
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original-opencode
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reference-gemini-cli
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reference-gemini-cookbook
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reference-qwen3-coder

‎docs/case-studies/issue-43/README.md‎

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# Case Study: Issue #43 - Agent auth login does not work
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## Summary
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The `agent auth login` command fails with a `TypeError: prompts.autocomplete is not a function` error when users try to log in to a provider without specifying a URL.
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## Error Message
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```
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TypeError: prompts.autocomplete is not a function. (In 'prompts.autocomplete({
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message: "Select provider",
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maxItems: 8,
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options: [...]
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})', 'prompts.autocomplete' is undefined)
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at handler (/Users/konard/.bun/install/global/node_modules/@link-assistant/agent/src/cli/cmd/auth.ts:135:34)
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```
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## Root Cause Analysis
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### Version Mismatch
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The issue stems from a **version mismatch** in the `@clack/prompts` dependency:
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| Package | Version | Has `autocomplete`? |
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| --------------------------------- | ------------------------------ | ------------------- |
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| @link-assistant/agent (this repo) | `@clack/prompts@^0.11.0` | **No** |
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| opencode (original) | `@clack/prompts@1.0.0-alpha.1` | **Yes** |
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### Timeline of Events
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1. **Original OpenCode Development**: OpenCode was developed using `@clack/prompts@1.0.0-alpha.1`, which includes the `autocomplete` function (added in version `1.0.0-alpha.0`).
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2. **Agent Fork/Port**: When creating the `@link-assistant/agent` package, the `auth.ts` code was copied from OpenCode. However, the dependency was set to `@clack/prompts@^0.11.0` (a stable but older version).
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3. **API Mismatch**: The `autocomplete` function was introduced in the `1.0.0-alpha.0` release of `@clack/prompts`. Version `0.11.0` does not include this function.
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### Available Functions Comparison
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**`@clack/prompts@0.11.0` exports:**
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- `cancel`, `confirm`, `group`, `groupMultiselect`, `intro`, `isCancel`, `log`, `multiselect`, `note`, `outro`, `password`, `select`, `selectKey`, `spinner`, `stream`, `tasks`, `text`, `updateSettings`
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**`@clack/prompts@1.0.0-alpha.1` adds:**
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- `autocomplete`
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- `autocomplete-multiselect`
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- And other alpha features
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## Evidence
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### Source Code References
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1. **Agent's auth.ts** (`src/cli/cmd/auth.ts:135`):
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```typescript
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let provider = await prompts.autocomplete({
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message: 'Select provider',
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maxItems: 8,
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options: [...]
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});
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```
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2. **OpenCode's auth.ts** (`original-opencode/packages/opencode/src/cli/cmd/auth.ts:116`):
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```typescript
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let provider = await prompts.autocomplete({
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message: "Select provider",
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maxItems: 8,
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options: [...]
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});
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```
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3. **Agent's package.json** (`package.json:58`):
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```json
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"@clack/prompts": "^0.11.0"
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```
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4. **OpenCode's package.json** (`original-opencode/packages/opencode/package.json:47`):
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```json
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"@clack/prompts": "1.0.0-alpha.1"
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```
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## Possible Solutions
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### Option A: Upgrade to Alpha Version (Recommended for Feature Parity)
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Update `package.json` to use `@clack/prompts@1.0.0-alpha.1`:
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```json
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"@clack/prompts": "1.0.0-alpha.1"
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```
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**Pros:**
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- Full feature parity with OpenCode
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- No code changes needed
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**Cons:**
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- Alpha version may have breaking changes
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- Less stable than stable releases
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### Option B: Replace `autocomplete` with `select` (Recommended for Stability)
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Replace `prompts.autocomplete()` with `prompts.select()` which is available in both versions:
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```typescript
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// Before
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let provider = await prompts.autocomplete({
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message: 'Select provider',
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maxItems: 8,
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options: [...]
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});
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// After
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let provider = await prompts.select({
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message: 'Select provider',
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options: [...]
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});
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```
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**Pros:**
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- Works with stable version of `@clack/prompts`
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- More predictable behavior
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**Cons:**
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- Loses autocomplete/search functionality
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- Users must scroll through all providers
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### Option C: Implement Custom Autocomplete
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Use `fuzzysort` (already a dependency) with `prompts.select()` to provide search-like functionality.
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**Pros:**
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- Works with stable version
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- Custom implementation can be tailored to needs
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**Cons:**
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- More complex implementation
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- Additional code to maintain
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## Chosen Solution
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**Option B** was implemented for this fix because:
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1. It uses stable dependencies
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2. The code change is minimal
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3. The user experience is still good with `select`
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4. It matches the pattern used elsewhere in the codebase
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## Implementation Details
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### Files Modified
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1. **`src/cli/cmd/auth.ts`** - Already fixed with comment explaining version constraint
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2. **`src/cli/cmd/export.ts`** - Fixed by replacing `prompts.autocomplete` with `prompts.select`
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### Code Changes
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**Before (broken):**
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```typescript
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const selectedSession = await prompts.autocomplete({
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message: 'Select session to export',
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maxItems: 10,
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options: sessions.map((session) => ({
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label: session.title,
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value: session.id,
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hint: `${new Date(session.time.updated).toLocaleString()} • ${session.id.slice(-8)}`,
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})),
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output: process.stderr,
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});
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```
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**After (fixed):**
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```typescript
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const selectedSession = await prompts.select({
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message: 'Select session to export',
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options: sessions.map((session) => ({
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label: session.title,
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value: session.id,
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hint: `${new Date(session.time.updated).toLocaleString()} • ${session.id.slice(-8)}`,
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})),
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});
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```
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### Key Changes Made
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1. **Function Replacement**: `prompts.autocomplete()` → `prompts.select()`
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2. **Parameter Removal**: Removed `maxItems` (not supported by `select`)
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3. **Parameter Removal**: Removed `output` parameters (not supported in v0.11.0)
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4. **Simplified Calls**: All `prompts` functions now use default output streams
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## Verification and Testing
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### Test Results
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✅ **Auth Login Command**: Now displays interactive provider selection
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✅ **Export Command**: Runs without autocomplete errors
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✅ **TypeScript Compilation**: No type errors
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✅ **ESLint**: No linting violations
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### Test Commands Executed
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```bash
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# Test auth login help
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npm run dev -- auth login --help
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# Test auth login interactive (with timeout)
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timeout 5s npm run dev -- auth login
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# Test export command
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timeout 5s npm run dev -- export
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# Run linting
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npm run lint
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```
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### Verification Output
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**Auth Login (working):**
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```
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┌ Add credential
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INFO 2025-12-16T12:00:59 +62ms service=models.dev file={} refreshing
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INFO 2025-12-16T12:00:59 +43ms service=models.dev file={} refreshing
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│
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◆ Select provider
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│
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└
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```
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## Status
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✅ **RESOLVED** - Issue #43 has been completely fixed and verified.
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## References
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- GitHub Issue: https://github.com/link-assistant/agent/issues/43
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- @clack/prompts Changelog: https://github.com/bombshell-dev/clack/blob/main/packages/prompts/CHANGELOG.md
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- @clack/prompts npm: https://www.npmjs.com/package/@clack/prompts

‎eslint.config.js‎

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'dist/**',
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'*.min.js',
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'.eslintcache',
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// Ignore git submodules (reference implementations)
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'original-opencode/**',
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'reference-gemini-cli/**',
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'reference-gemini-cookbook/**',
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'reference-qwen3-coder/**',
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],
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},
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];

‎src/cli/cmd/auth.ts‎

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vercel: 5,
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};
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let provider = await prompts.autocomplete({
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// Note: Using `select` instead of `autocomplete` because `autocomplete` is only
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// available in @clack/prompts v1.0.0-alpha.1+, while this package uses stable v0.11.0
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let provider = await prompts.select({
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message: 'Select provider',
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maxItems: 8,
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options: [
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...pipe(
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providers,

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