fix: rename gemini provider from 'geminiai' to 'google' to match backend

[cbeatty8]

Fixes #271

Problem

When running genlayer init and selecting Gemini as the LLM provider, initialization fails with:

Error: Requested providers {geminiai} do not match any stored providers.

Root Cause

• CLI sends: geminiai
• Backend expects: google

Verified in genlayer-studio:

• backend/node/create_nodes/default_providers/google_gemini-*.json: "provider": "google"
• tests/integration/test_llm_providers_registry.py: "google": "GEMINI_API_KEY"
• frontend/src/assets/schemas/providers_schema.json: enum includes "google"

Changes

• Rename provider key from geminiai to google in AI_PROVIDERS_CONFIG
• Update AiProviders type to use google instead of geminiai
• cliOptionValue now sends google to match backend expectations

Files Changed

• src/lib/config/simulator.ts (3 lines)

Summary by CodeRabbit

• Chores
  • Updated the AI provider identifier used in configuration and CLI from "geminiai" to "google".
  • The provider will continue to display as "Gemini" and the existing Gemini environment variable remains unchanged.
  • This adjusts provider selection and CLI option mapping to use the new identifier.

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 430ab265-d8da-4f42-b9c8-c8090ddf65e0

📥 Commits

Reviewing files that changed from the base of the PR and between 0a0fa48 and cfdf8b6.

📒 Files selected for processing (1)

• src/lib/config/simulator.ts

📝 Walkthrough

Walkthrough

The provider identifier for Gemini was changed from geminiai to google in src/lib/config/simulator.ts, updating the AiProviders type and the AI_PROVIDERS_CONFIG entry while keeping the display name and environment variable unchanged.

Changes

Cohort / File(s)	Summary
Provider Configuration Update src/lib/config/simulator.ts	Replaced geminiai with google in the exported AiProviders union type and updated the AI_PROVIDERS_CONFIG entry to use cliOptionValue: "google" (display name: "Gemini" and envVar: "GEMINI_API_KEY" unchanged).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 I hopped through code at break of day,
Swapped a name that led astray,
From geminiai to google clear,
Now Gemini whispers in the right ear,
A tiny fix, a joyful cheer!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: renaming the gemini provider identifier from 'geminiai' to 'google' to align with backend expectations.
Linked Issues check	✅ Passed	The PR fully addresses the linked issue #271 by changing the provider identifier from 'geminiai' to 'google' in both the type definition and configuration, matching the backend's expected value.
Out of Scope Changes check	✅ Passed	All changes are directly scoped to fixing the Gemini provider name mismatch issue; no unrelated modifications are present in the changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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