fix: Auto-update AI SDKs in install script to prevent ProviderInitError

- opencode-config-install.sh now runs 'npm install @ai-sdk/fireworks@latest
  @ai-sdk/openai-compatible@latest' after config merge
- Fixes ProviderInitError caused by OpenCode CLI 1.16.2 + outdated
  @ai-sdk/fireworks < 2.0.53
- Same fix as SIN-Code-FireworksAI-OpenCode-Config repo (da62a7d)

Author: sin-context-bridge-builder

opencode-config-install.sh

@@ -229,6 +229,17 @@ print(f"Reasoning: enabled (off/low/medium/high/max variants)")
 PYEOF
 
     log_ok "opencode.json updated with Fireworks AI + Reasoning"
+
+    # AI-SDK compatibility fix — ensure latest provider packages
+    if [ -d "${OPENCODE_DIR}/node_modules" ]; then
+        log_info "Checking AI SDK versions..."
+        cd "${OPENCODE_DIR}"
+        if npm install @ai-sdk/fireworks@latest @ai-sdk/openai-compatible@latest --silent 2>/dev/null; then
+            log_ok "AI SDKs updated (fireworks + openai-compatible)"
+        else
+            log_warn "AI SDK update failed — provider may crash if versions are incompatible"
+        fi
+    fi
 else
     log_info "DRY RUN — Would create/update opencode.json"
 fi