nexus/.planning/milestones/v1.3-phases/22-agent-streaming/22-04-SUMMARY.md

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
22-agent-streaming	04	ui	react slash-commands mention popover shadcn routing	phase provides 22-00 agent-role-colors, AgentRole type, Wave 0 test stubs phase provides 22-02 AgentIcon component from AgentIconPicker	ChatSlashCommandPopover component (260px, opens upward, 5 slash commands) ChatMentionPopover component (200px, opens upward, agent autocomplete) slash-commands.ts utility with SLASH_COMMANDS and resolveAgentFromContent	22-05 ChatInput wiring plan	added patterns Popover with side=top opens popovers upward anchored to textarea onOpenAutoFocus prevented to preserve textarea focus during popover interaction resolveAgentFromContent: slash command priority > @mention priority > active agent fallback Disabled commands shown with opacity-50 and (Coming soon) suffix	created modified ui/src/lib/slash-commands.ts ui/src/components/ChatSlashCommandPopover.tsx ui/src/components/ChatSlashCommandPopover.test.tsx ui/src/components/ChatMentionPopover.tsx ui/src/components/ChatMentionPopover.test.tsx	/search command defined with routesTo: null and disabled: true — displayed greyed with Coming soon suffix per UI spec resolveAgentFromContent prioritizes slash commands over @mentions, falls back to activeAgentId ChatMentionPopover limits display to 5 agents (slice(0,5)) with scroll container // @vitest-environment jsdom pragma added to component tests for JSX dynamic import support	Slash command routing: SLASH_COMMANDS array + resolveAgentFromContent function for agent routing from message content Popover autocomplete pattern: Popover > PopoverTrigger asChild > PopoverContent (side=top, onOpenAutoFocus prevented)	INPUT-05 INPUT-06	4min	2026-04-01

Phase 22 Plan 04: Slash Command and @Mention Popovers Summary

Slash command routing table (5 commands, /search disabled) and agent @mention autocomplete popover — both standalone, wired into ChatInput in plan 05.

Performance

• Duration: 4 min
• Started: 2026-04-01T18:23:41Z
• Completed: 2026-04-01T18:27:49Z
• Tasks: 2 completed
• Files modified: 5

Accomplishments

• Created slash-commands.ts with SLASH_COMMANDS (5 entries) and resolveAgentFromContent routing function that prioritizes slash commands over @mentions over active agent fallback
• Created ChatSlashCommandPopover — 260px popover opening upward with command list; /search greyed with "Coming soon" per UI spec
• Created ChatMentionPopover — 200px popover opening upward showing agent icon + name + role label, filtered by query, max 5 agents, loading skeleton, empty state

Task Commits

1. Task 1: Slash command routing utility and ChatSlashCommandPopover - 99d01d9e (feat)
2. Task 2: ChatMentionPopover component - a3bb02c5 (feat)

Files Created/Modified

• ui/src/lib/slash-commands.ts — SLASH_COMMANDS array and resolveAgentFromContent routing utility
• ui/src/components/ChatSlashCommandPopover.tsx — 260px slash command popover with cmdk Command component
• ui/src/components/ChatSlashCommandPopover.test.tsx — routing logic tests (5 pass) + export smoke test
• ui/src/components/ChatMentionPopover.tsx — 200px agent mention autocomplete with icon/name/role rows
• ui/src/components/ChatMentionPopover.test.tsx — export smoke test + 4 todo items for future wiring tests
• ui/src/lib/agent-role-colors.ts — dependency copy for worktree build (exists in phase-22 branch from plan 22-00)

Deviations from Plan

Auto-fixed Issues

1. [Rule 3 - Blocking] Added jsdom pragma to component tests

• Found during: Task 1 test verification
• Issue: Dynamic import() of JSX component failed with react/jsx-dev-runtime error in node test environment
• Fix: Added // @vitest-environment jsdom pragma to both test files, matching existing pattern in ChatAgentSelector.test.tsx
• Files modified: ChatSlashCommandPopover.test.tsx, ChatMentionPopover.test.tsx
• Commit: 99d01d9e

2. [Rule 3 - Blocking] Added agent-role-colors.ts to worktree

• Found during: Task 2 implementation
• Issue: Worktree branch lacks phase-22-00 foundation files; ChatMentionPopover imports agent-role-colors which didn't exist in worktree
• Fix: Created agent-role-colors.ts with identical content to phase-22 branch version
• Files modified: ui/src/lib/agent-role-colors.ts (new file, already exists on phase-22 branch)
• Commit: a3bb02c5
• Note: When cherry-picked to gsd/phase-22-agent-streaming, this will be a no-op (file already exists with same content)

Known Stubs

• ChatMentionPopover.test.tsx: 4 it.todo() items for render/interaction tests — per plan spec, wiring tests deferred until ChatInput integration in plan 22-05
• ChatSlashCommandPopover.test.tsx component test section: export smoke test only — render/interaction tests deferred per plan spec

Self-Check: PASSED