Make bare attach and detach target all clients

[platypii]

Summary

• make bare hyp attach target every active registered client adapter
• make bare hyp detach target every known client descriptor
• preserve explicit client targeting and document the all-client default in command help
• add regression coverage for both bare commands and their help output

Verification

• PASS: node --test test/core/command-dispatch.test.js test/core/integration.test.js test/core/client-name-case-insensitive.test.js (51 tests)
• PASS: npm run smoke -- client_attach_idempotent
• PASS: git diff --check
• BASELINE FAILURE: npm test passes 3,279 tests and fails two unrelated tests in blob-store.test.js and usage-policy-fold.test.js; both reproduce in isolation and neither file is changed here
• BASELINE FAILURE: npm run typecheck reports that sanitizeLabel is not exported from hypaware/core/util in untouched ai-gateway/src/entrypoint_activity.js
• BASELINE FAILURE: npm run smoke -- claude_attach_detach records a successful attach, then fails its existing hook-shape assertion because both session-context and classify-cwd hooks are present