fix: add autosdk CLI install to generate.sh

The generate.sh was missing the `dotnet tool install --global autosdk.cli --prerelease`
line that all other SDKs have, causing CI to fail with "autosdk: command not found".
Also added `rm -rf Generated` for clean regeneration, upgraded shebang to
`#!/usr/bin/env bash`, and tightened error handling with `set -euo pipefail`.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: HavenDV

src/libs/Humanloop/generate.sh

@@ -1,10 +1,12 @@
-#!/bin/bash
-set -e
+#!/usr/bin/env bash
+set -euo pipefail
 
 # Humanloop API does not publish a public OpenAPI spec.
 # The spec is manually maintained in this directory based on the official SDKs and API docs.
 # Source reference: https://github.com/humanloop/humanloop-node (Fern-generated TypeScript SDK)
 
+dotnet tool install --global autosdk.cli --prerelease
+rm -rf Generated
 autosdk generate openapi.yaml \
   --namespace tryAGI.Humanloop \
   --clientClassName HumanloopClient \