Cloud panes: keep the local Ghostty theme on attach - #12259
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Byte mirrors (the native Cloud pane, cmux-tui remote views) render in their own libghostty with their own theme. The attach-surface replay currently dumps this process's whole 256-entry palette plus default fg/bg as OSC 4/10/11, pinning the mirror to the daemon's colors. Red until the attach path switches to the theme-portable replay. Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV
The attach-surface replay used vt_replay_bounded, which emits OSC 4 for all 256 palette entries plus OSC 10/11 from the guest terminal. A Cloud VM has no Ghostty config, so that is libghostty's compiled-in palette, and it overrode the Mac's theme for the pane's whole life. TERM_PROGRAM, terminfo, and COLORTERM were already at parity; this was the remaining difference. Guest: the three attach-path replay sites (attach, sidecar resync, resize) use vt_replay_bounded_theme_portable_with_aliases, the variant the daemon-to-host hop already used. The sparse colors sidecar keeps carrying PTY-authored entries. Mac: CloudTuiManualIOFrameDecoder reads that sidecar (vt-state, output, resized, and the flattened colors-changed event) into CloudTuiRemoteColors, and the mirror session feeds the equivalent OSC 10/11/12 and OSC 4 bytes to its own libghostty after the replay, so authored colors survive and everything else stays the local theme. Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV
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📝 WalkthroughWalkthroughThe change adds sparse remote color metadata to Cloud TUI frames, applies metadata as OSC bytes, and removes host-authored color state from replay streams. It also updates devbox prompt colors, image defaults, and private-network announcement behavior. ChangesRemote color transport
Devbox networking and defaults
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Sequence Diagram(s)sequenceDiagram
participant PTY
participant TUICore
participant FrameDecoder
participant MirrorSession
participant LocalSurface
PTY->>TUICore: Authored colors and terminal output
TUICore->>FrameDecoder: Theme-portable replay and sparse colors
FrameDecoder->>MirrorSession: Decoded frame
MirrorSession->>LocalSurface: Apply OSC color delta
Suggested reviewers: Merge Risk: 🟡 Moderate · up to Late-bound panes can miss remote colors, while devbox announcement failures may evade both runtime warnings and image verification. These issues should be resolved before merge. Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (2 errors, 1 warning)
✅ Passed checks (22 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 42.86% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 21 functions across 10 files. (2 skipped: 2 unsupported.) Full details: Cmux No Hacky SleepsExplanation The PR adds a production fixed-delay keepalive in Resolution Replace the raw unbounded shell Full details: Cmux Swift Package BoundariesExplanation The new Resolution Create a small SwiftPM target named ✨ Finishing Touches 💡 2📝 Generate docstrings 💡
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🧪 Generate unit tests (beta)
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In `@Sources/Cloud/CloudTuiManualMirrorSession.swift`:
- Line 442: Update the color sidecar contract to represent removals explicitly
instead of treating an empty colors snapshot as a no-op. In applyColors(_:),
apply the corresponding OSC reset operations for foreground, background, cursor,
and palette-entry removals (OSC 110, 111, 112, and 104), while preserving the
remote terminal color state as the sole source of truth.
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…ch the pane The sidecar is a full sparse replacement: a color the remote PTY reset (OSC 104/110/111/112) is absent from the next snapshot. The pane only ever added OSC sets, and libghostty keeps an override until told otherwise, so a reset color outlived itself on the Mac. The mirror session now remembers the last sidecar it applied and feeds the delta (sets for new or changed entries, resets for vanished ones), the same diff the Rust remote client does. A replay reset clears the applied set first so the replay's own sidecar re-applies it in full. Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV
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In `@Sources/Cloud/CloudTuiManualMirrorSession.swift`:
- Line 453: Use the latest remote color sidecar as the sole source of truth
rather than treating appliedRemoteColors as surface-delivery state. Update
bind(surface:) to apply the full stored OSC color state to a newly bound
surface, and only record delivery as applied when a surface actually receives
it. Add a regression test covering receipt before binding and verifying the
bound surface receives the sidecar.
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Sources/Cloud/CloudTuiManualMirrorSession.swiftSources/Cloud/CloudTuiRemoteColors.swiftcmuxTests/CloudManualMirrorTransportTests.swift
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| private func applyColors(_ colors: CloudTuiRemoteColors?) { | ||
| guard let colors else { return } | ||
| let delta = colors.oscDelta(from: appliedRemoteColors) | ||
| appliedRemoteColors = colors |
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🎯 Functional Correctness | 🟠 Major | ⚡ Quick win
Do not mark colors as applied when no surface received them.
A session can receive a color frame before bind(surface:). Line 453 stores the sidecar even when Line 455 has no surface to receive the delta. A later bind does not replay that stored sidecar. The next identical sidecar produces an empty delta, so the newly bound pane keeps its local theme until a color change or replacement replay occurs.
The structural cause is that appliedRemoteColors represents both remote state and surface delivery state. Make the latest remote sidecar the single source of truth. On bind(surface:), apply its full OSC state to the new surface. Add a regression test that receives a sidecar before binding, then verifies the bound surface receives it.
As per coding guidelines, report the source of truth and first migration cut. As per path instructions, remote-authored colors require one authoritative representation with no stale cached fallback.
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In `@Sources/Cloud/CloudTuiManualMirrorSession.swift` at line 453, Use the latest
remote color sidecar as the sole source of truth rather than treating
appliedRemoteColors as surface-delivery state. Update bind(surface:) to apply
the full stored OSC color state to a newly bound surface, and only record
delivery as applied when a surface actually receives it. Add a regression test
covering receipt before binding and verifying the bound surface receives the
sidecar.
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Sources: Coding guidelines, Path instructions
The guest prompt hardcoded 256-color cube indices (135, 118, 166, 161), which render the same fixed purple and lime under every theme. The local zsh prompt uses ESC[35m / ESC[32m / ESC[33m, so with the theme-portable attach its purple is the theme's magenta while the Cloud prompt stayed the cube purple. Same palette codes on both sides now; cyan and red for the git branch and dirty marker. Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV
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…rompt) Bake from this branch (epoch 2026-09-10-r1) with the palette-code prompt, verified, derived for sm..2xl, recorded as the default for base and desktop. Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV
…al lands A machine created from a memory snapshot resumes with its VPC interface already configured and never transmits on it. The provider's fabric forwards to a machine only after a frame from it, so the Mac's WireGuard hub sent SYNs into nothing for the whole connect timeout (150 s measured, tcpdump on the guest saw no packet at all) while the daemon was listening from the first second. Three gratuitous ARPs from the guest made the address answer within one second. The guest now announces itself: cmux-devbox-boot sends the burst when it detects a clone and every 30 s after, and the Freestyle attach path runs the same command before the daemon bundle so machines on an older image are reachable the moment the Mac dials them. arping is an explicit image package and the image verify proves the loop is running on a booted machine. Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL
Unsolicited probes never get a reply, so arping always runs to its deadline: two interfaces in series cost six seconds on every first attach. Two probes, concurrent per interface, no probe on the provider's 169.254 leg, and the attach path runs the announce alongside the shim install. Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL
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Inline comments:
In `@web/scripts/verify-devbox-image.ts`:
- Line 91: Update the supervisor-process assertion in the devbox verification
command to use a non-self-matching pgrep pattern and construct the script path
without embedding the full process name in the checked command. Apply the
corresponding matching expectation update in the vm-devbox identity test.
In `@web/services/vms/images/network.ts`:
- Around line 28-36: Update devboxNetworkAnnounceCommand so the generated shell
command propagates failures from ip or arping and returns a non-zero status when
an announcement fails, while preserving status 0 when arping is unavailable or
no global address exists. Remove the unconditional success behavior, and keep
freestyle.ts logging the non-zero announce exit code while continuing the attach
flow.
In `@web/tests/vm-devbox-identity.test.ts`:
- Line 211: Update the no-arping test environment around
devboxNetworkAnnounceCommand() to invoke /bin/sh directly and set PATH to only
the empty directory, removing /usr/bin and /bin so host arping or ip binaries
cannot be resolved while the shell remains executable.
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| export function devboxNetworkAnnounceCommand(): string { | ||
| return ( | ||
| "command -v arping >/dev/null 2>&1 && ip -o -4 addr show scope global 2>/dev/null" + | ||
| " | while read -r _ dev _ cidr _; do" + | ||
| ' case "$dev" in lo|docker*|veth*|br-*|virbr*) continue;; esac;' + | ||
| ' arping -U -c 3 -w 3 -I "$dev" "${cidr%/*}" >/dev/null 2>&1;' + | ||
| " done; true" | ||
| ); | ||
| } |
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🩺 Stability & Availability | 🟡 Minor | ⚡ Quick win
Propagate real announcement failures without making attach fatal. freestyle.ts invokes devboxNetworkAnnounceCommand() before the attach bundle and logs only a non-zero announce.exitCode. The trailing true makes both ip and arping failures return 0, so a failed announcement can leave the first private-network dial unavailable without a warning. Return a non-zero status for those failures, retain status 0 for missing arping or no global address, and let the caller log and continue.
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In `@web/services/vms/images/network.ts` around lines 28 - 36, Update
devboxNetworkAnnounceCommand so the generated shell command propagates failures
from ip or arping and returns a non-zero status when an announcement fails,
while preserving status 0 when arping is unavailable or no global address
exists. Remove the unconditional success behavior, and keep freestyle.ts logging
the non-zero announce exit code while continuing the attach flow.
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| const empty = mkdtempSync(path.join(tmpdir(), "cmux-noarping-")); | ||
| try { | ||
| const result = spawnSync("sh", ["-c", devboxNetworkAnnounceCommand()], { | ||
| env: { ...process.env, PATH: `${empty}:/usr/bin:/bin` }, |
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🩺 Stability & Availability | 🟡 Minor | ⚡ Quick win
Keep the no-arping test isolated from host binaries.
devboxNetworkAnnounceCommand() resolves arping and then ip through PATH. With /usr/bin:/bin in PATH, a host with these tools can run real network commands instead of testing the missing-binary branch. Invoke /bin/sh directly and set PATH to empty. command -v arping then short-circuits the command, while /bin/sh remains executable.
Proposed fix
- const result = spawnSync("sh", ["-c", devboxNetworkAnnounceCommand()], {
- env: { ...process.env, PATH: `${empty}:/usr/bin:/bin` },
+ const result = spawnSync("/bin/sh", ["-c", devboxNetworkAnnounceCommand()], {
+ env: { ...process.env, PATH: empty },🤖 Prompt for AI Agents
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In `@web/tests/vm-devbox-identity.test.ts` at line 211, Update the no-arping test
environment around devboxNetworkAnnounceCommand() to invoke /bin/sh directly and
set PATH to only the empty directory, removing /usr/bin and /bin so host arping
or ip binaries cannot be resolved while the shell remains executable.
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…try has not seen cmux vm new opens the machine right after POST /api/vm returns. A catalog refresh for a machine with no provider yet was a silent no-op, so the CLI reported the machine's sessions unavailable until the sidebar poll listed it, about 20 s later. Re-read the fleet once, as surface.new_terminal already does, so the provider exists and its refresh brings the link up. Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL
main's #12266 already announces private addresses at attach and lists a missing machine on catalog refresh, so this branch keeps only the boot supervisor's announce loop; the driver and socket hunks take main's side. The manifest takes main's epoch r2 defaults pending a rebake from the merged sources. Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL
…theme prompt + announce loop) Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL
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| " | { while read -r _ dev _ cidr _; do" + | ||
| ' case "$dev" in lo|docker*|veth*|br-*|virbr*) continue;; esac;' + | ||
| ' case "$cidr" in 169.254.*) continue;; esac;' + | ||
| ' arping -U -c 2 -w 2 -I "$dev" "${cidr%/*}" >/dev/null 2>&1 &' + |
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VLAN names break network announce
Medium Severity
ip -o addr prints VLAN devices as name@parent (for example eth0.164@eth0). That whole token is passed to arping -I, but the kernel name is only the part before @, so the probes fail. Errors are discarded, so the boot and 30s keep-alive announces can silently do nothing on the VPC VLAN path this was written for.
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…theme-portable attach) (#12304) Main's artifacts run for the merge of #12259 published the daemon whose attach replay is theme-portable. Machines from this image get the local Ghostty theme on their first attach with no daemon swap. Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL
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72ce5e9 Merge pull request manaflow-ai#12210 from manaflow-ai/issue-12204-inactive-pane-colors 39bbf00 feat(web): add Founding Chromium Engineer role to jobs page (manaflow-ai#12248) a34d44c devbox: promote sh-cd099a44912648399e0420df9b4e7f4f (daemon 897bb7a, theme-portable attach) (manaflow-ai#12304) 021537a fix: keep main windows out of fullscreen tiling (manaflow-ai#12298) 24125c7 test: update managed appearance snapshots for Catppuccin a5a3c0f fix: match fallback colors to managed Catppuccin themes c042f83 test: cover Catppuccin colors without theme resources 4916e7c test: use authoritative scrollbar response in wheel regression 3774a64 Complete macOS localization parity and validate plural catalogs (manaflow-ai#12169) 897bb7a Cloud panes: keep the local Ghostty theme on attach (manaflow-ai#12259) cde2e36 web: drop the status read after Freestyle create and warm the database during auth (manaflow-ai#12260) 18e6282 Merge pull request manaflow-ai#12295 from manaflow-ai/fix/codex-default-theme-compositing fe2292b fix: align managed terminal defaults with Codex theme 27bbb39 test: require the Codex Catppuccin default theme 84283f4 fix: size terminal frames from the tiled clip viewport caee136 fix: keep portal terminal contents clipped during resize 454bd7a fix: preserve inactive terminal colors by default e577aa7 test: cover inactive split appearance defaults # Conflicts: # .github/workflows/ci.yml
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* test(tui): attach replays must be theme-portable Byte mirrors (the native Cloud pane, cmux-tui remote views) render in their own libghostty with their own theme. The attach-surface replay currently dumps this process's whole 256-entry palette plus default fg/bg as OSC 4/10/11, pinning the mirror to the daemon's colors. Red until the attach path switches to the theme-portable replay. Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV * Cloud panes: keep the local Ghostty theme on attach The attach-surface replay used vt_replay_bounded, which emits OSC 4 for all 256 palette entries plus OSC 10/11 from the guest terminal. A Cloud VM has no Ghostty config, so that is libghostty's compiled-in palette, and it overrode the Mac's theme for the pane's whole life. TERM_PROGRAM, terminfo, and COLORTERM were already at parity; this was the remaining difference. Guest: the three attach-path replay sites (attach, sidecar resync, resize) use vt_replay_bounded_theme_portable_with_aliases, the variant the daemon-to-host hop already used. The sparse colors sidecar keeps carrying PTY-authored entries. Mac: CloudTuiManualIOFrameDecoder reads that sidecar (vt-state, output, resized, and the flattened colors-changed event) into CloudTuiRemoteColors, and the mirror session feeds the equivalent OSC 10/11/12 and OSC 4 bytes to its own libghostty after the replay, so authored colors survive and everything else stays the local theme. Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV * test(cloud): a dropped sidecar entry must reset the local override Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV * Cloud panes: apply the colors sidecar as a delta so remote resets reach the pane The sidecar is a full sparse replacement: a color the remote PTY reset (OSC 104/110/111/112) is absent from the next snapshot. The pane only ever added OSC sets, and libghostty keeps an override until told otherwise, so a reset color outlived itself on the Mac. The mirror session now remembers the last sidecar it applied and feeds the delta (sets for new or changed entries, resets for vanished ones), the same diff the Rust remote client does. A replay reset clears the applied set first so the replay's own sidecar re-applies it in full. Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV * devbox: prompt uses palette colors so it follows the Mac theme The guest prompt hardcoded 256-color cube indices (135, 118, 166, 161), which render the same fixed purple and lime under every theme. The local zsh prompt uses ESC[35m / ESC[32m / ESC[33m, so with the theme-portable attach its purple is the theme's magenta while the Cloud prompt stayed the cube purple. Same palette codes on both sides now; cyan and red for the git branch and dirty marker. Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV * devbox: promote sh-4a4aaf2881b94980a0684b8d5e87a0c2 (theme-portable prompt) Bake from this branch (epoch 2026-09-10-r1) with the palette-code prompt, verified, derived for sm..2xl, recorded as the default for base and desktop. Claude-Session: https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV * devbox: announce a clone on its private network so the Mac's first dial lands A machine created from a memory snapshot resumes with its VPC interface already configured and never transmits on it. The provider's fabric forwards to a machine only after a frame from it, so the Mac's WireGuard hub sent SYNs into nothing for the whole connect timeout (150 s measured, tcpdump on the guest saw no packet at all) while the daemon was listening from the first second. Three gratuitous ARPs from the guest made the address answer within one second. The guest now announces itself: cmux-devbox-boot sends the burst when it detects a clone and every 30 s after, and the Freestyle attach path runs the same command before the daemon bundle so machines on an older image are reachable the moment the Mac dials them. arping is an explicit image package and the image verify proves the loop is running on a booted machine. Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL * devbox: announce concurrently per interface, skip the link-local leg Unsolicited probes never get a reply, so arping always runs to its deadline: two interfaces in series cost six seconds on every first attach. Two probes, concurrent per interface, no probe on the provider's 169.254 leg, and the attach path runs the announce alongside the shim install. Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL * devbox: wait for the announce probes inside the pipeline subshell Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL * freestyle: one warn helper for best-effort guest execs (complexity gate) Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL * devbox: promote sh-262e7b61662048bba116a37682b14b1d (private-network announce) Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL * surface.catalog: list the fleet before refreshing a machine the registry has not seen cmux vm new opens the machine right after POST /api/vm returns. A catalog refresh for a machine with no provider yet was a silent no-op, so the CLI reported the machine's sessions unavailable until the sidebar poll listed it, about 20 s later. Re-read the fleet once, as surface.new_terminal already does, so the provider exists and its refresh brings the link up. Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL * Cloud mirror: replay a pre-bind color sidecar onto the surface that binds Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL * devbox: promote sh-5cef46dec54748e1a2bd75c35c3e9746 (merged sources: theme prompt + announce loop) Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL
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Sep 13, 2026
…theme-portable attach) (manaflow-ai#12304) Main's artifacts run for the merge of manaflow-ai#12259 published the daemon whose attach replay is theme-portable. Machines from this image get the local Ghostty theme on their first attach with no daemon swap. Claude-Session: https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL
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Cloud VM panes rendered with libghostty's compiled-in palette instead of the Mac's theme, even after #12125 gave them
TERM_PROGRAM=ghostty. TERM, terminfo, COLORTERM, and TERM_PROGRAM were already at parity with a local pane; the remaining difference was the attach replay itself.A Cloud pane is a local libghostty surface fed by a VT replay from the guest cmux-tui. The attach path used
vt_replay_bounded, which emits OSC 4 for all 256 palette entries plus OSC 10/11 from the guest terminal. The guest has no Ghostty config, so that is the default palette, and those overrides outrank the local theme for the pane's whole life. The theme-portable replay variant already existed and was used on the daemon-to-host hop, never on attach. The Mac also discarded the sparsecolorssidecar the daemon sends beside every replay.Guest (cmux-tui): the three attach-path replay sites (attach, sidecar resync, resize) use
vt_replay_bounded_theme_portable_with_aliases. The sidecar keeps carrying only PTY-authored entries.Mac:
CloudTuiManualIOFrameDecoderreads the sidecar fromvt-state,output,resized, and the flattenedcolors-changedevent intoCloudTuiRemoteColors; the mirror session feeds the equivalent OSC 10/11/12 and OSC 4 bytes to its own libghostty after the replay. Authored colors survive, everything else stays the local theme. A local pane resolvesESC[31mthrough the user's palette; a Cloud pane now does the same.Two commits: the Rust regression test (red) then the fix. Focused test run on a Blacksmith testbox at both commits. The Rust remote client (
session/remote.rs) already applied the sidecar, so it keeps its own theme too.Follow-up commit: the sidecar is a full sparse replacement, so the Mac now applies it as a delta (sets for new or changed entries, OSC 104/110/111/112 for vanished ones), the same diff the Rust remote client does. Regression test in
CloudManualMirrorTransportTests.Dogfood note: the guest side only takes effect on a machine whose cmux-tui daemon is built from this branch. The per-commit artifacts workflow publishes from main only, so the handoff swapped a branch-built musl binary (sha256 046e1b5f…) into dev-backend machine
vm-df0a92ca75c34f8fb4426b87b7272998on tagcldcol. Verified there: a Cloud pane and a local pane renderESC[31m..ESC[36midentically under the Mac theme;OSC 4;1in the guest turns red text blue,OSC 104;1returns it to the theme red.https://claude.ai/code/session_015E475vvXKQANyfiWTDwqsV
Prompt commit: the devbox prompt hardcoded cube indices 135/118/166/161, so its purple stayed fixed while the local zsh prompt (
ESC[35m) followed the theme. It now uses palette codes; measured on the test machine afterexec bash -l, the Cloud prompt pixels equal the local prompt pixels. New machines need a devbox rebake to pick it up.Note
Medium Risk
Changes attach replay semantics and Mac-side color application for all cloud mirrors, plus devbox boot networking that affects first-connect reliability; well-covered by Rust and Swift tests but cross-version daemon/client pairing matters.
Overview
Cloud VM panes now keep the Mac Ghostty theme instead of inheriting the guest daemon palette on attach. The guest switches attach replays to theme-portable VT bytes (no baked-in OSC 4/10/11), and only PTY-authored colors ride a sparse JSON sidecar. The Mac decodes that sidecar into new
CloudTuiRemoteColors, applies it as OSC deltas (including resets when entries disappear), and handles a dedicatedcolors-changedevent in the mirror session.Devbox connectivity: cloned VMs were unreachable until the VPC fabric saw egress traffic. The boot supervisor now runs gratuitous ARP on clone detect and every 30s (
devboxNetworkAnnounceCommand,iputils-arping), with image verify and tests pinning the behavior.Image rollout: devbox prompt colors use standard ANSI palette codes (not fixed cube indices), and the manifest promotes a new 20260911 Freestyle devbox series with an updated baked
cmux-tuiwhile demoting the prior dualstack defaults.Reviewed by Cursor Bugbot for commit bda7dac. Bugbot is set up for automated code reviews on this repo. Configure here.
Summary by CodeRabbit
New Features
Bug Fixes
Style
Promotion commit: baked
sh-4a4aaf2881b94980a0684b8d5e87a0c2from this branch, verified, derived sm..2xl, recorded as the default for base and desktop (devbox:manifest:checkandvm-image-manifest.test.tspass). Verified on a fresh machine from themdrow (sh-dfda2ea1…) with no hot patch: the baked prompt renders the same pixels as the local zsh prompt. That machine runs this branch's daemon; the daemon pin in the image stays main's until the artifacts workflow publishes this commit.New machines were unreachable for the whole connect timeout
Creating a machine failed in dogfood: the Mac's first link hit the 90 s connect timeout, then a retry connected about 30 s later. The guest daemon was listening within one second of create. A tcpdump on the guest's VPC VLAN interface during 150 s of dials saw no packet at all, not even the gateway's ARP. Three gratuitous ARPs from the guest made the same address answer within one second (reproduced twice). The provider's fabric forwards to a machine only after a frame from it, and a memory-snapshot clone resumes with the interface already configured, so nothing ever transmits.
Fix:
devboxNetworkAnnounceCommand()(web/services/vms/images/network.ts) sends a gratuitous ARP burst from every global IPv4.cmux-devbox-bootruns it when it detects a clone and every 30 s after (an idle machine cannot age out of the fabric's table). The Freestyle attach path runs it alongside the shim install, so machines on an older image are reachable the moment the Mac dials them: measured on the old image, create tocloud.link.connectedis 25 s with attach at 4 s, versus 90 s timeout plus retry before.iputils-arpingis an explicit image package andverify-devbox-image.tsproves the loop runs on a booted machine. Residual: this is a guest-side workaround for provider fabric behaviour; the provider should announce a clone itself.https://claude.ai/code/session_01Qbo7h8EMVTWizLKXD6ECRL