The desktop app previously lost project-level skills in two places: the
settings browser only queried user skills, and the slash-command picker for a
fresh session depended on CLI init state that does not exist before the first
turn. This change makes the skills APIs cwd-aware, falls back to project skill
loading before CLI init, syncs sidebar session deletion with open tabs, and
aligns the empty-session composer styling so the pre-message session UI stays
consistent.
Constraint: Fresh desktop sessions need slash-command discovery before the CLI websocket emits system/init
Constraint: Only repository code should be committed; build artifacts, installs, and /tmp smoke fixtures stay out of git
Rejected: Rebuild slash-command listings from full getCommands() in the sessions API | introduced auth-gated command dependencies unrelated to local skill discovery
Rejected: Unify EmptySession and ChatInput into one full component now | higher regression risk for normal chat interactions than a visual-only hero variant
Confidence: high
Scope-risk: moderate
Reversibility: clean
Directive: Keep pre-message skill discovery keyed to session workDir so project-level .claude/skills remain visible before the first turn
Tested: bun test src/server/__tests__/sessions.test.ts; cd desktop && bun run test -- --run src/__tests__/skillsSettings.test.tsx src/components/layout/Sidebar.test.tsx src/__tests__/pages.test.tsx src/pages/ActiveSession.test.tsx; cd desktop && bun run lint
Not-tested: Manual desktop smoke test against the rebuilt .app bundle in the local GUI
