`namedWorkspace` in `cli/root.go` parsed workspace identifiers with
`uuid.Parse` first and returned immediately on success, even when no
workspace had that UUID as its actual ID. This caused 404 errors for any
workspace whose name was a valid 32-char hex string (dashless UUID).
- Add `codersdk.ResolveWorkspace`: tries UUID lookup first, falls back
to name lookup on 404. `NameValid` guard skips the fallback for standard
dashed UUIDs (36 chars > 32-char name limit).
- Export `codersdk.SplitWorkspaceIdentifier`, replacing the duplicate
`splitNamedWorkspace` in `cli/root.go` (uses `strings.Cut`).
- Delete `namedWorkspace` from `cli/root.go`; all 28 call sites now use
`client.ResolveWorkspace` directly.
- Delete `namedWorkspace` and `splitNameAndOwner` from
`codersdk/toolsdk/bash.go`; inline `client.ResolveWorkspace`.
- Simplify `GetWorkspace` tool handler to a single `ResolveWorkspace`
call.
- Unit tests via httptest mock cover UUID, name, owner/name, UUID-like
fallback, not-found, server error, transport error, and invalid
identifier paths.
- Integration tests in `cli/show_test.go` and `codersdk/toolsdk` for
workspaces with UUID-like names.
> Generated with Coder Agents
> This PR was authored by Mux on behalf of Mike.
Adds `coder exp agents`, an interactive terminal UI for managing Coder
AI agent chats. Built with bubbletea/lipgloss/glamour, the TUI provides
parity with the web dashboard for chat management, model selection, and
real-time tool execution visibility.
## What it does
- **Chat list view**: tree-based navigation with nested subagent
expansion, search filtering, windowed scrolling, and pagination.
- **Active chat view**: viewport-based transcript with markdown
rendering, WebSocket streaming, and a text input composer for sending
messages.
- **Model picker overlay**: cached model catalog with fuzzy selection.
- **Diff drawer overlay**: git changes inspection with unified diff
rendering.
- **Tool call rendering**: humanized argument summaries, consecutive
duplicate collapsing, and status indicators.
## Key implementation details
- Session lifecycle uses a monotonic `chatGeneration` counter so async
responses from stale sessions are dropped on chat switch.
- Draft mode guards prevent duplicate chat creation on double-Enter.
- Error and loading states render inline without collapsing the TUI
chrome.
- Glamour renderer access is mutex-protected (not thread-safe).
- Intentional WebSocket close is distinguished from dropped connections
to prevent spurious reconnects.
## Testing
~220 unit tests covering rendering, state transitions, keyboard
dispatch, and edge cases. 4-scenario PTY-based E2E suite covers boot,
navigation, search, and direct chat open.
14 new files, ~7,400 lines added.
Cian Johnston