wh:update

Check for a new Wheeler version and offer to upgrade.

Step 0: Resolve the Wheeler venv

Wheeler registers its MCP servers in ~/.claude/settings.json under mcpServers. A modern install uses the SPLIT servers (wheeler_core, wheeler_query, wheeler_mutations, wheeler_ops); the legacy monolith used a single wheeler key (now removed by the installer). Each command resolves to an absolute path in the same venv bin, e.g. /Users/me/wheeler-user-test/.venv/bin/wheeler-core-mcp, so derive WHEELER_BIN from whichever Wheeler key is present:

python3 -c "
import json, pathlib, os, shutil
def load(p):
    try: return json.loads(pathlib.Path(os.path.expanduser(p)).read_text())
    except Exception: return {}
# Search a project .mcp.json (the session override) BEFORE the global settings,
# so we resolve the install actually serving this session. Split keys first (the
# current shape), then the legacy monolith key.
KEYS = ('wheeler_core', 'wheeler_query', 'wheeler_mutations', 'wheeler_ops', 'wheeler')
bin_dir = ''
for cfg in (load('.mcp.json'), load('~/.claude/settings.json')):
    servers = cfg.get('mcpServers', cfg)  # .mcp.json may keep servers at top level
    for key in KEYS:
        cmd = (servers.get(key) or {}).get('command', '') if isinstance(servers, dict) else ''
        if cmd and os.path.isabs(cmd) and pathlib.Path(cmd).exists():
            bin_dir = str(pathlib.Path(cmd).parent); break
    if bin_dir: break
# Last resort: a Wheeler console script on PATH.
if not bin_dir:
    for name in ('wheeler-core-mcp', 'wheeler'):
        found = shutil.which(name)
        if found: bin_dir = str(pathlib.Path(found).parent); break
print(bin_dir or 'NOT_FOUND')
"

Save this as WHEELER_BIN. All subsequent commands MUST use $WHEELER_BIN/python and $WHEELER_BIN/wheeler instead of bare python or wheeler. Never use source .venv/bin/activate — that activates whatever venv is in the CWD, which may not be Wheeler's.

If NOT_FOUND, tell the user Wheeler is not registered (no Wheeler MCP server in ~/.claude/settings.json and no wheeler-core-mcp on PATH).