config.yaml terminal.cwd is now the single source of truth for working
directory. MESSAGING_CWD and TERMINAL_CWD in .env are deprecated with a
migration warning.
Changes:
1. config.py: Remove MESSAGING_CWD from OPTIONAL_ENV_VARS (setup wizard
no longer prompts for it). Add warn_deprecated_cwd_env_vars() that
prints a migration hint when deprecated env vars are detected.
2. gateway/run.py: Replace all MESSAGING_CWD reads with TERMINAL_CWD
(which is bridged from config.yaml terminal.cwd). MESSAGING_CWD is
still accepted as a backward-compat fallback with deprecation warning.
Config bridge skips cwd placeholder values so they don't clobber
the resolved TERMINAL_CWD.
3. cli.py: Guard against lazy-import clobbering — when cli.py is
imported lazily during gateway runtime (via delegate_tool), don't
let load_cli_config() overwrite an already-resolved TERMINAL_CWD
with os.getcwd() of the service's working directory. (#10817)
4. hermes_cli/main.py: Add 'hermes memory reset' command with
--target all/memory/user and --yes flags. Profile-scoped via
HERMES_HOME.
Migration path for users with .env settings:
Remove MESSAGING_CWD / TERMINAL_CWD from .env
Add to config.yaml:
terminal:
cwd: /your/project/path
Addresses: #10225, #4672, #10817, #7663
