The desktop command list could be replaced by a partial live CLI update after a turn, and the server fallback only knew about skills. Keep the client list stable while refreshing from the authoritative session endpoint, and include legacy .claude/commands entries in that endpoint.
Constraint: Claude Code custom slash commands still use .claude/commands/*.md alongside newer skill commands.
Rejected: Only union client-side updates | would still miss custom commands before CLI init and lose argument hints from the authoritative API.
Confidence: high
Scope-risk: moderate
Directive: Keep session slash command fallback aware of both skills and legacy command directories.
Tested: bun test src/server/__tests__/sessions.test.ts -t "slash-commands"
Tested: cd desktop && bun run test -- --run src/stores/chatStore.test.ts
Tested: bun run check:desktop
Tested: bun run check:server
Tested: bun run check:native
Not-tested: bun run verify remains red due unrelated/flaky coverage lane failures outside this change.
Related: https://github.com/NanmiCoder/cc-haha/issues/495
010a4bf9d8