ccb370d: - SDK-6948: *.bsstag.com hubs are now recognised as BrowserStack on named internal staging envs (BROWSERSTACK_STAGING_ENV / BROWSERSTACK_ENV), so with the CLI flow (default) session marking and TRA linking work there. The classic (non-CLI) flow on a named staging env is not supported; its session update is skipped at debug.

• SDK-6948: update_cli failures fall back to BROWSERSTACK_BINARY_URL. A failed fallback download uses the cached binary.
• SDK-6948: _printSessionURL and _update log a failed session lookup or update (HTTP error) at debug instead of throwing.

25529d2: fix(cli): fall back to BROWSERSTACK_BINARY_URL when update_cli fails (SDK-6948)

update_cli runs during bootstrap — before the binary is spawned and before GRR localizes the API hosts — so it always targets production api.browserstack.com. On an internal staging run (BROWSERSTACK_STAGING_ENV) the staging credentials are rejected there (401), which left the CLI binary path empty and crashed the launcher with spawn('') … ERR_INVALID_ARG_VALUE: 'file' cannot be empty. When update_cli fails and BROWSERSTACK_BINARY_URL is set, download the binary from that URL instead so the run can proceed; the same applies when a 2xx reply carries no download URL and no binary is cached. If that download fails, the cached binary is used when there is one, and both errors are logged. Opt-in only — with the variable unset the original error propagates exactly as before. Ports main/v9 #224 to the v8 line.

7ef36e1: fix(util): recognize *.bsstag.com hosts as BrowserStack on internal staging envs (SDK-6948)

getCloudProvider and isBrowserstackInfra only matched browserstack.com, so a session pointed at an internal staging env (*.bsstag.com) was classified as non-BrowserStack: session marking and Automate <-> TRA session linking did not work there. *.bsstag.com hosts are now treated as BrowserStack when BROWSERSTACK_STAGING_ENV is a bare env name (e.g. k8s, trimmed; blank means unset) or BROWSERSTACK_ENV is staging/stag/preprod/pre-prod. Hosts are matched case-insensitively. Production behaviour is unchanged. With the CLI flow (the default), session marking and Automate <-> TRA session linking now work on those envs, because the binary supplies the staging session REST host. The classic (non-CLI) flow on a named staging env is not supported: it has no staging session REST host, so the session name/status update is skipped at debug instead of failing the hook. _printSessionURL and _update log a failed session lookup or update (HTTP error reply) at debug instead of throwing. Ports main/v9 #275 to the v8 line.

• Removed the resolveInstance: unable to resolve/create instance ... LOG POST error printed when a wdio before hook writes to the console.

• Made BrowserStack session bootstrap tolerant of an incomplete configuration response. Previously an empty or partial response aborted the whole bootstrap, which silently disabled every BrowserStack feature for that run — including custom tags and Test Reporting — and could leave the build with no test results.