Replace the embedded bootstrap manifest with a typed OAPI call to
GET /open-apis/security_plugin/v1/sec_cli/manifest, resolving the
download URL per-platform/per-arch against the live release set.
TAT auth flows through the existing credential chain; an x-tt-env
header is injected when LARKSUITE_CLI_X_TT_ENV is set, for BOE
routing.
Drop the standalone `sec install` verb — `sec run --auto-install`
(default on) makes it redundant. Add a persistent --verbose / -v
flag on the sec parent, inherited by every subcommand, that emits
step-by-step trace output on stderr.
bootstrap.json and bootstrap.go remain in-tree as dead code; they
will be removed in a follow-up cleanup.
bdb0cd14d1