Six independent line-parsers with three different quoting/comment semantics
read the same .env files: tools/skills_tool.load_env (strip("\"'"), no inline
comments), hermes_cli/managed_scope._parse_env (same, no export, no BOM),
web_server_cron._profile_env_value (plain utf-8, no BOM), profile_cmd
._env_file_has_key, env_loader._env_keys_defined_in_dotenv (utf-8, so a BOM'd
first key stayed "\ufeffKEY" and the dashboard profile scrub missed line 1),
mem0/_setup._prompt_api_key (startswith scan, no quote strip). The boundary
parsers (scrub key set, skill secret capture) therefore disagreed with the
parser that installs the profile scope.
Now every one is a 1-3 line forwarder onto load_env_file, and
hermes_cli.config.load_env is memo over it (public signature unchanged).
_parse_env_value moves next to its only caller in secret_scope.
load_env_file gains the same latin-1 fallback env_loader uses to install
into os.environ, so a mis-encoded file yields the same key set on both sides.
Managed .env keeps its fail-LOUD contract (decode error logs and ignores the
file) instead of load_env_file's fail-soft {}.
Behavior change: managed .env, skills_tool and mem0 setup now honour
`export`, quoted-value escapes and inline comments the way the profile scope
does; web_server_cron and the dashboard scrub tolerate a BOM.
Invariant test: a BOM'd/export/quoted/commented .env yields the same key set
via load_hermes_dotenv (installer), load_env_file (scope) and
_env_keys_defined_in_dotenv (scrub); fails with the old scrub parser.