Context

RemoteClaw is middleware that delegates LLM execution to CLI agents (Claude Code, Gemini, Codex, OpenCode); it does not dispatch LLM calls itself. The CLI agents manage their own provider/model selection. Prior cleanup PRs removed ~80 files of dead model-management surface left over from the pre-fork embedded execution path. This issue addresses a survivor.

Problem

src/agents/vercel-ai-gateway.ts exposes two functions:

• getStaticVercelAiGatewayModelCatalog() — hard-coded fallback model list + cost metadata (lines 10-180)
• discoverVercelAiGatewayModels() — HTTP discovery with static-catalog fallback (lines 186-207)

Neither has any external caller. getStaticVercelAiGatewayModelCatalog is called only from within discoverVercelAiGatewayModels. discoverVercelAiGatewayModels is not imported anywhere outside its own file.

Verification (run against current main):

rg "discoverVercelAiGatewayModels\(" src/ --type ts
# Only match: the declaration at src/agents/vercel-ai-gateway.ts:186

rg "getStaticVercelAiGatewayModelCatalog" src/ --type ts
# Only matches: within src/agents/vercel-ai-gateway.ts itself

Other "vercel-ai-gateway" string references in the codebase are unrelated to this file and must be preserved:

• src/auth/provider-auth.ts:276 — provider-name → env-var lookup (AI_GATEWAY_API_KEY). Kept.
• src/agents/provider-utils.ts:152 — model-ID formatting for provider strings. Kept.
• src/plugins/bundled-plugin-metadata.generated.ts:3063+ — metadata describing the bundled npm package @remoteclaw/vercel-ai-gateway-provider (an external plugin package, not this file). Kept.
• src/agents/model-auth-env-vars.ts:34 — env-var mapping. Kept.
• Tests referencing "vercel-ai-gateway" as provider string (session-utils tests). Kept.

Tasks

• Delete src/agents/vercel-ai-gateway.ts
• Delete companion test file src/agents/vercel-ai-gateway.test.ts if present
• Remove any re-exports from barrel files (search src/agents/index.ts and similar for references)
• Verify no remaining imports: rg "from.*vercel-ai-gateway\"" src/ should only return plugin-metadata generated file and external package references
• Run tsc --noEmit and full test suite

Acceptance Criteria

• File src/agents/vercel-ai-gateway.ts no longer exists
• rg "getStaticVercelAiGatewayModelCatalog|discoverVercelAiGatewayModels" src/ returns no hits
• rg "from.*[\"']\..*vercel-ai-gateway" src/ returns no hits (the generated plugin-metadata file references the external npm package, not this local file — that's fine)
• tsc --noEmit clean
• Existing test suite passes with no new skips