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🤖 feat: complete the Mux to Xum rename #3928

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b225df8
fix: harden xum directory transition
matifali Aug 22, 2026
fad2050
refactor: rename internal Mux identifiers to Xum
matifali Aug 22, 2026
12fb74a
🤖 feat: create a distinct Xum brand mark
matifali Aug 22, 2026
310453d
🤖 refactor: finish developer tooling Xum rename
matifali Aug 22, 2026
77e91db
docs: finish visible Xum branding
matifali Aug 22, 2026
6a47e86
test: use canonical Xum trust paths
matifali Aug 22, 2026
4a6489f
chore: use exec form for Docker healthcheck
matifali Aug 22, 2026
c5043ef
fix: export benchmark compatibility variables
matifali Aug 22, 2026
c93dcda
fix: preserve benchmark rename compatibility
matifali Aug 22, 2026
74edb26
fix: allow legacy leaderboard artifact filters
matifali Aug 22, 2026
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16 changes: 8 additions & 8 deletions .design-sync/conventions.md
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
# Mux design system — how to build with it
# Xum design system — how to build with it

These components are Mux's real, compiled React components (the desktop app's UI:
chat tool-call cards, message states, settings sections, banners, modals, small
Expand Down Expand Up @@ -30,14 +30,14 @@ There are **no CSS-module class maps**; style layout with Tailwind utility class
built from Mux's semantic color tokens (NOT raw hex). Real families (all in the
shipped stylesheet):

| Purpose | Utilities |
| ----------- | -------------------------------------------------------------------------------------------- |
| Surfaces | `bg-background`, `bg-background-secondary`, `bg-surface-primary`, `bg-surface-secondary` |
| Text | `text-foreground`, `text-muted-foreground`, `text-content-primary`, `text-content-secondary` |
| Borders | `border-border` |
| Accent | `bg-accent`, `text-accent` |
| Purpose | Utilities |
| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Surfaces | `bg-background`, `bg-background-secondary`, `bg-surface-primary`, `bg-surface-secondary` |
| Text | `text-foreground`, `text-muted-foreground`, `text-content-primary`, `text-content-secondary` |
| Borders | `border-border` |
| Accent | `bg-accent`, `text-accent` |
| Agent modes | `text-plan-mode` / `bg-plan-mode` — same for `edit` / `exec` / `thinking` / `task`. `ask` & `debug` ship only as `--color-<mode>-mode` tokens (no utility): use `style={{ color: "var(--color-ask-mode)" }}` |
| Radius | `rounded-md` |
| Radius | `rounded-md` |

For a token Tailwind doesn't expose as a utility, reference it directly:
`style={{ color: "var(--color-content-primary)" }}`. Token names live in the
Expand Down
2 changes: 1 addition & 1 deletion .design-sync/previews/PRLinkBadge.tsx
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Expand Up @@ -8,7 +8,7 @@ import type { GitHubPRLinkWithStatus } from "@/common/types/links";
// PRLinkBadge only needs theme + tooltip from the shell.
const PR_LINK: GitHubPRLinkWithStatus = {
type: "github-pr",
url: "https://github.com/coder/mux/pull/1623",
url: "https://github.com/coder/xum/pull/1623",
owner: "coder",
repo: "mux",
number: 1623,
Expand Down
12 changes: 8 additions & 4 deletions .envrc
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Expand Up @@ -8,9 +8,13 @@ nix_direnv_manual_reload

use flake .

# Optional: shared per-user env vars for all mux worktrees
MUX_SHARED_ENVRC="$HOME/.mux/.envrc"
if [[ -f "$MUX_SHARED_ENVRC" ]]; then
# Optional: shared per-user env vars for all Xum worktrees.
XUM_SHARED_ENVRC="$HOME/.xum/.envrc"
LEGACY_MUX_SHARED_ENVRC="$HOME/.mux/.envrc"
if [[ -f "$XUM_SHARED_ENVRC" ]]; then
# source_env() also calls watch_file(), so edits trigger direnv reloads.
source_env "$MUX_SHARED_ENVRC"
source_env "$XUM_SHARED_ENVRC"
elif [[ -f "$LEGACY_MUX_SHARED_ENVRC" ]]; then
# Existing developer machines may not have moved their shared env file yet.
source_env "$LEGACY_MUX_SHARED_ENVRC"
fi
37 changes: 21 additions & 16 deletions .github/workflows/nightly-terminal-bench.yml
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Expand Up @@ -18,8 +18,13 @@ on:
description: "Experiments to enable (comma-separated)"
required: false
type: string
xum_run_as_goal:
description: "Run nightly smoke/matrix tasks as strict Xum CLI Goal Runs"
required: false
default: false
type: boolean
mux_run_as_goal:
description: "Run nightly smoke/matrix tasks as strict mux CLI Goal Runs"
description: "Deprecated alias for xum_run_as_goal"
required: false
default: false
type: boolean
Expand All @@ -32,13 +37,13 @@ jobs:
uses: ./.github/workflows/terminal-bench.yml
with:
model_name: "anthropic/claude-sonnet-4-5"
mux_run_args: "--thinking high"
xum_run_args: "--thinking high"
dataset: "terminal-bench@2.0"
concurrency: "1"
env: "daytona"
task_names: "chess-best-move"
experiments: ${{ inputs.experiments }}
mux_run_as_goal: ${{ github.event_name == 'workflow_dispatch' && inputs.mux_run_as_goal || false }}
xum_run_as_goal: ${{ github.event_name == 'workflow_dispatch' && (inputs.xum_run_as_goal || inputs.mux_run_as_goal) || false }}
# Keep least-privilege secret scope for reusable workflow calls.
secrets:
TERMINAL_BENCH_ANTHROPIC_API_KEY: ${{ secrets.TERMINAL_BENCH_ANTHROPIC_API_KEY }}
Expand All @@ -48,23 +53,23 @@ jobs:
GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}

# Smoke tests for Harbor SWE-style datasets (single task each).
# These validate that mux can run inside the dataset's repo checkout (--runtime local)
# and that we target the verifier's expected working directory (MUX_PROJECT_PATH).
# These validate that Xum can run inside the dataset's repo checkout (--runtime local)
# and that we target the verifier's expected working directory (XUM_PROJECT_PATH).
swebench-verified-smoke-test:
name: "Smoke test (swebench-verified: django__django-10097)"
needs: smoke-test
uses: ./.github/workflows/terminal-bench.yml
with:
model_name: "anthropic/claude-sonnet-4-5"
mux_run_args: "--thinking high --runtime local"
xum_run_args: "--thinking high --runtime local"
dataset: "swebench-verified@1.0"
concurrency: "1"
env: "daytona"
task_names: "django__django-10097"
mux_project_path: "/testbed"
xum_project_path: "/testbed"
timeout: "3000"
experiments: ${{ inputs.experiments }}
mux_run_as_goal: ${{ github.event_name == 'workflow_dispatch' && inputs.mux_run_as_goal || false }}
xum_run_as_goal: ${{ github.event_name == 'workflow_dispatch' && (inputs.xum_run_as_goal || inputs.mux_run_as_goal) || false }}
secrets:
TERMINAL_BENCH_ANTHROPIC_API_KEY: ${{ secrets.TERMINAL_BENCH_ANTHROPIC_API_KEY }}
OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
Expand All @@ -78,15 +83,15 @@ jobs:
uses: ./.github/workflows/terminal-bench.yml
with:
model_name: "anthropic/claude-sonnet-4-5"
mux_run_args: "--thinking high --runtime local"
xum_run_args: "--thinking high --runtime local"
dataset: "swe-gen-js@1.0"
concurrency: "1"
env: "daytona"
task_names: "biomejs__biome-7314"
mux_project_path: "/app/src"
xum_project_path: "/app/src"
timeout: "600"
experiments: ${{ inputs.experiments }}
mux_run_as_goal: ${{ github.event_name == 'workflow_dispatch' && inputs.mux_run_as_goal || false }}
xum_run_as_goal: ${{ github.event_name == 'workflow_dispatch' && (inputs.xum_run_as_goal || inputs.mux_run_as_goal) || false }}
secrets:
TERMINAL_BENCH_ANTHROPIC_API_KEY: ${{ secrets.TERMINAL_BENCH_ANTHROPIC_API_KEY }}
OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
Expand All @@ -100,15 +105,15 @@ jobs:
uses: ./.github/workflows/terminal-bench.yml
with:
model_name: "anthropic/claude-sonnet-4-5"
mux_run_args: "--thinking high --runtime local"
xum_run_args: "--thinking high --runtime local"
dataset: "aider-polyglot@1.0"
concurrency: "1"
env: "daytona"
task_names: "polyglot_cpp_all-your-base"
mux_project_path: "/app"
xum_project_path: "/app"
timeout: "1800"
experiments: ${{ inputs.experiments }}
mux_run_as_goal: ${{ github.event_name == 'workflow_dispatch' && inputs.mux_run_as_goal || false }}
xum_run_as_goal: ${{ github.event_name == 'workflow_dispatch' && (inputs.xum_run_as_goal || inputs.mux_run_as_goal) || false }}
secrets:
TERMINAL_BENCH_ANTHROPIC_API_KEY: ${{ secrets.TERMINAL_BENCH_ANTHROPIC_API_KEY }}
OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
Expand Down Expand Up @@ -147,12 +152,12 @@ jobs:
uses: ./.github/workflows/terminal-bench.yml
with:
model_name: ${{ matrix.model }}
mux_run_args: "--thinking high"
xum_run_args: "--thinking high"
dataset: "terminal-bench@2.0"
concurrency: "48"
env: "daytona"
experiments: ${{ inputs.experiments }}
mux_run_as_goal: ${{ github.event_name == 'workflow_dispatch' && inputs.mux_run_as_goal || false }}
xum_run_as_goal: ${{ github.event_name == 'workflow_dispatch' && (inputs.xum_run_as_goal || inputs.mux_run_as_goal) || false }}
allow_transient_agent_errors: true
secrets:
TERMINAL_BENCH_ANTHROPIC_API_KEY: ${{ secrets.TERMINAL_BENCH_ANTHROPIC_API_KEY }}
Expand Down
50 changes: 34 additions & 16 deletions .github/workflows/terminal-bench.yml
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Expand Up @@ -44,18 +44,34 @@ on:
required: false
type: string
default: ""
mux_project_path:
xum_project_path:
description: "Project path inside the task container (e.g., /testbed, /app/src)"
required: false
type: string
default: ""
xum_run_args:
description: "Additional CLI flags passed to Xum run (e.g., --thinking high --use-1m --budget 5.00; with goal mode, add --goal-turns/--goal-budget)"
required: false
type: string
default: ""
xum_run_as_goal:
description: "Run each task instruction as a Xum CLI Goal Run"
required: false
type: boolean
default: false
# Compatibility inputs for reusable-workflow callers created before the rename.
mux_project_path:
description: "Deprecated alias for xum_project_path"
required: false
type: string
default: ""
mux_run_args:
description: "Additional CLI flags passed to mux run (e.g., --thinking high --use-1m --budget 5.00; with goal mode, add --goal-turns/--goal-budget)"
description: "Deprecated alias for xum_run_args"
required: false
type: string
default: ""
mux_run_as_goal:
description: "Run each task instruction as a mux CLI Goal Run"
description: "Deprecated alias for xum_run_as_goal"
required: false
type: boolean
default: false
Expand Down Expand Up @@ -101,12 +117,14 @@ on:
description: "Model to use (e.g., anthropic/claude-opus-5, openai/gpt-5.6-sol)"
required: false
type: string
# GitHub caps workflow_dispatch at ten inputs. Keep these established
# external names while reusable workflow calls use canonical xum_* inputs.
mux_run_args:
description: "Additional CLI flags passed to mux run (e.g., --thinking high --use-1m; with goal mode, add --goal-turns/--goal-budget)"
description: "Additional CLI flags passed to Xum run (legacy input name)"
required: false
type: string
mux_run_as_goal:
description: "Run each task instruction as a mux CLI Goal Run"
description: "Run each task instruction as a Xum CLI Goal Run (legacy input name)"
required: false
default: false
type: boolean
Expand Down Expand Up @@ -192,15 +210,15 @@ jobs:
TB_ENV: ${{ inputs.env }}
TB_TASK_NAMES: ${{ inputs.task_names }}
TB_MODEL: ${{ inputs.model_name }}
MUX_MODEL: ${{ inputs.model_name }}
XUM_MODEL: ${{ inputs.model_name }}
TB_TIMEOUT: ${{ inputs.timeout }}
MUX_PROJECT_PATH: ${{ inputs.mux_project_path }}
XUM_PROJECT_PATH: ${{ inputs.xum_project_path || inputs.mux_project_path }}
TB_ARGS: >-
${{ inputs.max_tasks && format('--n-tasks {0}', inputs.max_tasks) || '' }}
${{ inputs.extra_args || '' }}
MUX_EXPERIMENTS: ${{ inputs.experiments }}
MUX_RUN_ARGS: ${{ inputs.mux_run_args }}
MUX_RUN_AS_GOAL: ${{ inputs.mux_run_as_goal && '1' || '' }}
XUM_EXPERIMENTS: ${{ inputs.experiments }}
XUM_RUN_ARGS: ${{ inputs.xum_run_args || inputs.mux_run_args }}
XUM_RUN_AS_GOAL: ${{ (inputs.xum_run_as_goal || inputs.mux_run_as_goal) && '1' || '' }}
ANTHROPIC_API_KEY: ${{ secrets.TERMINAL_BENCH_ANTHROPIC_API_KEY }}
OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
GOOGLE_API_KEY: ${{ secrets.GOOGLE_API_KEY }}
Expand Down Expand Up @@ -280,13 +298,13 @@ jobs:
echo "Artifact name: $ARTIFACT_NAME"

- name: Upload Terminal-Bench results to BigQuery
if: always() && github.repository == 'coder/mux' && startsWith(inputs.dataset, 'terminal-bench@')
if: always() && github.repository == 'coder/xum' && startsWith(inputs.dataset, 'terminal-bench@')
env:
GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}
GCP_PROJECT_ID: mux-benchmarks
BQ_DATASET: benchmarks
MUX_EXPERIMENTS: ${{ inputs.experiments }}
MUX_RUN_AS_GOAL: ${{ inputs.mux_run_as_goal && '1' || '' }}
XUM_EXPERIMENTS: ${{ inputs.experiments }}
XUM_RUN_AS_GOAL: ${{ inputs.xum_run_as_goal && '1' || '' }}
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run: |
if [ -z "$GCP_SA_KEY" ]; then
echo "GCP_SA_KEY not set, skipping BigQuery upload"
Expand All @@ -299,13 +317,13 @@ jobs:
rm -f /tmp/gcp-sa.json

- name: Upload Harbor results to BigQuery
if: always() && github.repository == 'coder/mux' && !startsWith(inputs.dataset, 'terminal-bench@')
if: always() && github.repository == 'coder/xum' && !startsWith(inputs.dataset, 'terminal-bench@')
env:
GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}
GCP_PROJECT_ID: mux-benchmarks
BQ_DATASET: benchmarks
MUX_EXPERIMENTS: ${{ inputs.experiments }}
MUX_RUN_AS_GOAL: ${{ inputs.mux_run_as_goal && '1' || '' }}
XUM_EXPERIMENTS: ${{ inputs.experiments }}
XUM_RUN_AS_GOAL: ${{ inputs.xum_run_as_goal && '1' || '' }}
run: |
if [ -z "$GCP_SA_KEY" ]; then
echo "GCP_SA_KEY not set, skipping BigQuery upload"
Expand Down
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