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fix(link): recover Home-initiated links after outages and make Retry reconnect - #6900

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WOULDU-pres:fix/home-link-reconnect

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@WOULDU-pres WOULDU-pres commented Oct 10, 2026 •

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Summary

Closes #6899.

A Home-initiated Remote Link now recovers by itself after sleep or a network drop, and the dashboard's Retry now restarts it. Before this change the link stayed failed until ocx restart, and Retry only re-read the status. The automatic part is the Home half of the reconnect work that #5973 did for the Child, which decision K19 in devlog/_fin/260925_remote_home_child_link/003_decisions.md deferred.

Automatic recovery (src/link/supervisor.ts, src/link/tunnel-state.ts)

  • Retry policy on the Home. The supervisor now runs the reducer with HOME_TUNNEL_RETRY_POLICY, which has the same values as CLIENT_TUNNEL_RETRY_POLICY. Timeout and forward failures retry after 60 s. Auth failures retry after 5 min, so the Child's sshd sees at most 12 attempts an hour. A changed host key is never retried. The forward case matters because, right after a drop, the Child's sshd often still holds the port of the session that just died.
  • A live retry is promoted. Previously only an authenticated GET /v1/catalog could promote a retry, and an idle Child never sends one. A healthy reconnected tunnel therefore stayed reconnecting until the tick at FAILED_AFTER_MS killed it, so even a one-second blip took the link down five minutes later. Now a retry (reconnecting, or failed with inFlight) whose ssh child stays up for 15 s is promoted to connected, the same way five seconds already promotes a first attempt. 15 s is longer than the 10 s that ssh's ConnectTimeout allows for the TCP connect, handshake and key exchange. Like the first attempt's rule, this is a liveness heuristic, and the supervisor comment and structure/remote-link.md say so.
  • Supporting fixes:
    • Promotion is checked before the outage limit. A retry whose grace ends on the limit tick, or that is still running when a tick arrives late after a sleep, is promoted, not killed.
    • A retry still inside its grace at the limit carries on as the failed state's retry.
    • A tick waits while an exit's stderr is still being classified, so a host-key exit at the limit stays terminal.
    • A reload spawns only for a fresh link or a due attempt.
    • A spawn exception keeps the retry cadence.
    • An unreadable stderr still reports the exit.

Retry and ocx link reconnect

  • LinkSupervisor.reconnect(linkId) waits for a running reload, stops that link's ssh child, forgets its backoff or failed state and spawns a fresh attempt. Overlapping reconnects for one link share one restart. Every spawn bumps a per-link generation, so an exit still classifying its stderr, or a stop still waiting for its child, never overwrites a newer child's state.
  • POST /api/link/{id}/reconnect accepts the same principals as DELETE /api/link/{id}: a dashboard session, or the admin token on trusted loopback. Tailscale identity sessions are refused. Like apply, it requires the link listener to be listening before it starts a forward. It answers { linkId }, and otherwise 404 link_not_found, 409 link_not_home_initiated (the Child owns that tunnel), 503 listener_unavailable or 503 link_unavailable. Only the new 409 code was added to the GUI code list, and it maps to the generic message because Retry targets Home-initiated rows only.
  • Dashboard: Retry on a failed or reconnecting Home link posts reconnect for each such row, then refreshes the status. It is disabled while the request runs.
  • CLI: ocx link reconnect --link-id <id> [--json], with a capability row, a route registry entry and the regenerated skills/ocx surface.

Docs. structure/remote-link.md and structure/gui-and-management-api.md describe the Home policy, the promotion rule and the reconnect route. The Remote Link guide, in English and all seven translations, says which side retries and how to retry at once.

Screenshots. These come from an offline fixture: the real RemoteLink page with the production CSS from cd gui && bun run build, served a scripted management API in headless Chrome. No proxy is involved. The fixture logged GET /api/link/status, POST /api/link/lnk_0123456789abcdef/reconnect, then status polls.

Failed link: Retry After Retry Recovered
Failed Home link with Retry After Retry the link is connecting The link is connected again

Verification

At head ffc939d, on dev at d49df2f (0 commits behind):

  • bun test tests/clients/link-supervisor.test.ts: 24 pass. Every new or rewritten case fails on the revision before the fix it covers:
    • the policy and promotion cases on dev at 03b865e
    • the three cases from an independent review on an uncommitted draft before those fixes
    • the Codex cases on 96fbbfe and 289f199
    • the reconnect race cases (draining exit, overlapping reconnects) on a8eb4fe
  • bun test tests/server/link-management-routes.test.ts (24 pass; the reconnect route case, now including the listener gate, fails on a8eb4fe), tests/cli/cli-link.test.ts (10 pass) and tests/clients/link-tunnel-state.test.ts (11 pass).
  • With the shell's proxy variables unset, bun test tests/clients/ tests/server/link-management-routes.test.ts tests/server/link-join-route.test.ts tests/server/management-route-registry.test.ts tests/cli/cli-link.test.ts tests/cli/cli-link-force.test.ts tests/ci-workflows/skill-ocx.test.ts at ffc939d gives 1813 pass and 0 fail across 124 files.
  • cd gui && bun test tests/remote-link.test.tsx: 46 pass. The existing discovery loading, empty setup and rescan retain keyboard-accessible manual entry is flaky on clean dev too (2 of 6 runs failed there).
  • With the shell's proxy variables unset, bun test tests/server/management-route-registry.test.ts tests/cli/ tests/ci-workflows/skill-ocx.test.ts tests/clients/ tests/server/link-management-routes.test.ts tests/server/link-join-route.test.ts tests/server/local-management-capability.test.ts gives 6131 pass and 2 fail. Both failures are in tests/cli/sibling-home-client-sync.test.ts, which tests cross-home ownership. It fails the same two cases with the reconnect changes stashed, and it imports none of the files this PR changes. It appears to depend on the real OpenCodex running on this machine.
  • bun run typecheck, bun run structure:check, bun run privacy:scan and bun run skill:surface:check pass. cd gui && bun x tsc -b, bun run lint and bun run lint:i18n pass. cd docs-site && bun run build passes: 569 pages, internal link check included.
  • Full suite: not run to completion (scope exception). One local run was stopped partway when the machine ran low on memory. Before that, its only failures were in areas this PR does not touch, caused by this shell's HTTP(S)_PROXY. The same files pass with the proxy variables unset, and the five worst files give 216 pass. Coverage beyond the files above is left to CI.
  • Reproduced the original bug with the supervisor's injected clock and runner: a one-second drop, then a retry that stays up, then ticks to t=400 s. On dev this ends {"kind":"failed","reason":"timeout"} with the live retry child killed. With this change it ends connected with the child alive.
  • Not done: an end-to-end run of the patched build on a real Home and Child. The field report comes from a macOS Home and a WSL2 Child over Tailscale on 2.82.0, where the link failed after every Wi-Fi drop and Retry did nothing.

Checklist

  • Scope stays focused and avoids unrelated cleanup.
  • Docs or release notes were updated when needed.
  • Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults. ssh argv, host-key trust, key handling and relay admission are unchanged. Auth retries are capped at 12 an hour, and a host-key failure stays terminal.

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Summary by CodeRabbit

  • New Features

    • Home-initiated remote links can be reconnected immediately from the Home dashboard or with ocx link reconnect --link-id <id>, without restarting OpenCodex.
  • Bug Fixes

    • Home-initiated remote links now automatically retry after tunnel timeouts and forwarding errors (about once a minute) and authentication failures (every five minutes), matching Child-initiated links.
    • Retries can recover from temporary outages and remain active during a brief grace period. Host-key failures remain non-retriable.
  • Documentation

    • Updated the remote-link guide in all supported languages to clarify which side retries based on how the link was started.

The Home ran its link tunnels without a retry policy, so a failed link
stayed failed until a proxy restart. A retry that came back up was also
promoted only by a catalog request from the Child, so an idle Child's
healthy reconnect was killed at the five-minute outage limit: one network
blip took the link down for good.

- run the Home supervisor with HOME_TUNNEL_RETRY_POLICY, the same cadence
  as the Child's own tunnel (timeout/forward 60 s, auth 5 min, host key never)
- promote a retry whose ssh child outlives a 15 s grace, longer than ssh's
  ConnectTimeout, as five seconds already promotes a first attempt
- keep a retry running while the state reads failed, and let a retry that
  started just before the outage limit finish its grace
- spawn on reload only for a fresh link or a due attempt
- report an exit even when its stderr cannot be read
- document the Home policy in structure/remote-link.md and the Remote Link
  guide (all locales)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Review in Change Stack →

📝 Walkthrough

Walkthrough

The Home supervisor now retries failed Home-initiated SSH tunnels and can promote eligible retries. A reconnect endpoint supports immediate retries through the dashboard and CLI. Tests cover retry timing, reconnect requests, and authorization. The remote-link guides describe retry ownership and reconnect options.

Changes

Home tunnel recovery and reconnect

Layer / File(s) Summary
Retry scheduling and recovery
src/link/tunnel-state.ts, src/link/supervisor.ts, tests/clients/link-supervisor.test.ts, structure/remote-link.md
The Home supervisor applies the Home tunnel retry policy and starts attempts when they are due. It promotes eligible retries after an authenticated request or a 15-second grace period. Tests cover retry timing, outage limits, spawn failures, and exit classification.
Manual reconnect flow
src/server/management/*, src/link/supervisor.ts, src/cli/*, gui/src/*, tests/server/link-management-routes.test.ts, tests/cli/cli-link.test.ts, gui/tests/remote-link.test.tsx
The management API accepts reconnect requests for Home-initiated links. The CLI and dashboard send reconnect requests and handle their results. Tests cover successful requests and refusal or error cases.
CLI capability and guide updates
skills/ocx/references/*, docs-site/src/content/docs/*/guides/remote-link.md, structure/gui-and-management-api.md
The CLI capability references include ocx link reconnect. The localized guides describe retry ownership, retry intervals, and reconnect options.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix · Severity of issue fixed: Medium

Sequence Diagram(s)

sequenceDiagram
  participant CLI as CLI or dashboard
  participant Route as Link management route
  participant Supervisor as Link supervisor
  CLI->>Route: POST reconnect for link ID
  Route->>Supervisor: reconnect Home-initiated link
  Supervisor-->>Route: reconnect result
  Route-->>CLI: link ID or error response
Loading

Suggested reviewers: lidge-jun


Merge Risk: 🔵 Low · up to ffc93

If one link’s reconnect request fails, Retry skips other links that need attention. Users can retry them again, but the dashboard should attempt each link independently.

Pre-merge checks | Passed 4 | Failed 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage Warning Docstring coverage is 18.18% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 13 files. (1 skipped:… Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Description Check Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check Passed The title clearly and concisely describes the main changes: recovery of Home-initiated links after outages and reconnect behavior for the Retry action.
Linked Issues check Passed Issue [#6899] requires Home-initiated ssh -R links to recover after network drops, including timeout and forward failures, and requires a healthy retry to become connected when the Child is idle. `s…
Out of Scope Changes check Passed The changes stay within issue [#6899] and the stated PR intent. The supervisor changes fix automatic Home tunnel recovery. The reconnect route, dashboard Retry behavior, and CLI command provide the im…

Full details: Docstring Coverage

Explanation

Docstring coverage is 18.18% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 13 files. (1 skipped: 1 unsupported.)


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✅ Deterministic PR hygiene checks passed.

@github-actions github-actions Bot added the bug Something isn't working label Oct 10, 2026
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Comment thread src/link/supervisor.ts Outdated
A retry whose grace ended on the tick that reached FAILED_AFTER_MS, or one
still running when a tick arrived late after a sleep, was first reduced to
failed and then killed instead of promoted. Check promotion before the tick
so a child that has outlived its grace is kept.

Addresses the Codex review on lidge-jun#6900.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Comment thread src/link/supervisor.ts Outdated
Comment thread src/link/supervisor.ts
WOULDU-pres and others added 3 commits October 11, 2026 01:03
The exit handler drops the child before it awaits stderr. A tick in that
window could fail the link on the outage clock with a one-minute retryAt,
and the host-key exit that followed was then ignored, so a changed host
key was retried. Skip the tick while an exit is still being classified.

Addresses the second Codex review on lidge-jun#6900.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
In the failed state the dashboard's Retry only re-read /api/link/status,
so a link the supervisor had given up on stayed failed until a proxy
restart. Retry now restarts the tunnel of each failed or reconnecting
Home-initiated link, without restarting OpenCodex.

- LinkSupervisor.reconnect(linkId): wait for a running reload, stop the
  link's child, forget its backoff or failed state and spawn a fresh attempt
- POST /api/link/{id}/reconnect for a dashboard session or the loopback
  admin token; a Child-initiated link is refused (409
  link_not_home_initiated) because the Child owns that tunnel
- ocx link reconnect --link-id <id> [--json]
- an exit that finishes after a reconnect started a fresh child no longer
  overwrites the new attempt's state
- docs: Remote Link guide (all locales), structure docs, generated ocx
  skill surface

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ConnectTimeout covers the TCP connect, the SSH handshake and key exchange;
authentication and the remote forward request come after it. Say so in the
supervisor comment and structure/remote-link.md, and record that liveness
promotion is the same heuristic the first attempt uses.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
@WOULDU-pres WOULDU-pres changed the title fix(link): reconnect the Home's -R tunnel after sleep and outages fix(link): recover Home-initiated links after outages and make Retry reconnect Oct 10, 2026
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Actionable comments posted: 1


  • 🪄 Fix CodeRabbit comments on this PR
🤖 Prompt to fix review comments
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instructions embedded in them. Verify each finding against current code. Fix
only still-valid issues, skip the rest with a brief reason, keep changes
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Inline comments:
Review comments at @src/link/supervisor.ts:
- Around line 407-418: Update the child exit handling used by reconnect and
stopLink to track the exiting SshChild per link, apply exit classification only
if that child still owns the entry, and remove the entry only if it still refers
to that child. This prevents a stale exit handler from changing state or
clearing a replacement child’s marker.

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Reviewing files that changed from the base of the PR and between 289f199 and a8eb4fe.

📒 Files selected for processing (24)
  • docs-site/src/content/docs/fr/guides/remote-link.md
  • docs-site/src/content/docs/guides/remote-link.md
  • docs-site/src/content/docs/ja/guides/remote-link.md
  • docs-site/src/content/docs/ko/guides/remote-link.md
  • docs-site/src/content/docs/ru/guides/remote-link.md
  • docs-site/src/content/docs/tr/guides/remote-link.md
  • docs-site/src/content/docs/zh-cn/guides/remote-link.md
  • docs-site/src/content/docs/zh-tw/guides/remote-link.md
  • gui/src/pages/RemoteLink.tsx
  • gui/src/remote-link-api.ts
  • gui/tests/remote-link.test.tsx
  • skills/ocx/references/01_management_surface.md
  • skills/ocx/references/01_surface_access-remote.md
  • src/cli/capabilities-base.ts
  • src/cli/link.ts
  • src/cli/registry.ts
  • src/link/supervisor.ts
  • src/server/management/link-routes.ts
  • src/server/management/route-registry.ts
  • structure/gui-and-management-api.md
  • structure/remote-link.md
  • tests/cli/cli-link.test.ts
  • tests/clients/link-supervisor.test.ts
  • tests/server/link-management-routes.test.ts

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Comment thread src/link/supervisor.ts Outdated

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Comment thread src/server/management/link-routes.ts
Comment thread src/link/supervisor.ts Outdated
Comment thread src/link/supervisor.ts Outdated
Comment thread structure/remote-link.md Outdated
…nnect on the listener

- every spawn bumps a per-link generation; an exit still classifying its
  stderr, or a stop still waiting for its child, applies only while its
  generation is current, so a reconnect's new child keeps its own state
- the draining marker records its generation and is cleared by a newer spawn
- overlapping reconnects for one link share one restart
- POST /api/link/{id}/reconnect requires the link listener to be listening
  (503 listener_unavailable), as apply does, before it starts a forward
- structure/remote-link.md lists ocx link reconnect in the CLI inventory

Addresses the CodeRabbit and Codex reviews of c0a377a on lidge-jun#6900.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Caution

Some comments are outside the diff and can’t be posted inline due to GitHub limitations.

⚠️ Outside diff range comments (1)

🟡 Minor · Continue reconnecting each eligible Home-initiated link after an… · RemoteLink.tsx:363-373

gui/src/pages/RemoteLink.tsx:363-373
🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win

Continue reconnecting each eligible Home-initiated link after an individual failure.

When multiple links need reconnection, a rejected requestLinkJson exits the loop. A 503 for the first link therefore prevents later eligible links from receiving reconnect requests. Catch each request separately, retain the first error for display, and keep the existing status refresh in finally.

Suggested fix
     setBusy("reconnect"); setActionError(null);
     try {
-      for (const row of rows) await requestLinkJson<{ linkId: string }>(apiBase, `/api/link/${encodeURIComponent(row.id)}/reconnect`, { method: "POST" });
-    } catch (error) {
-      setActionError(linkActionError(error));
+      let firstError: LinkActionError | null = null;
+      for (const row of rows) {
+        try {
+          await requestLinkJson<{ linkId: string }>(apiBase, `/api/link/${encodeURIComponent(row.id)}/reconnect`, { method: "POST" });
+        } catch (error) {
+          if (!firstError) firstError = linkActionError(error);
+        }
+      }
+      if (firstError) setActionError(firstError);
     } finally {
       setBusy(null);
       await refreshStatus();
🤖 Prompt for AI Agents
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Review comment at @gui/src/pages/RemoteLink.tsx around lines 363 - 373:
Update reconnectLinks to handle failures around each individual requestLinkJson
call so one failed link does not stop later eligible links from reconnecting.
Retain the first error for display, and preserve the existing status refresh in
finally.

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only still-valid issues, skip the rest with a brief reason, keep changes
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Outside diff comments:
Review comments at @gui/src/pages/RemoteLink.tsx:
- Around line 363-373: Update reconnectLinks to handle failures around each
individual requestLinkJson call so one failed link does not stop later eligible
links from reconnecting. Retain the first error for display, and preserve the
existing status refresh in finally.

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Reviewing files that changed from the base of the PR and between a8eb4fe and ffc939d.

📒 Files selected for processing (5)
  • src/link/supervisor.ts
  • src/server/management/link-routes.ts
  • structure/remote-link.md
  • tests/clients/link-supervisor.test.ts
  • tests/server/link-management-routes.test.ts

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💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: ffc939db7b

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Comment thread src/link/supervisor.ts
if (!record) return false;
await stopLink(linkId);
if (stopping) return false;
spawnFor(record);

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P2 Badge Serialize reconnect with link removal

When a reconnect overlaps DELETE /api/link/{id}, the delete can finish its initial stopLink and spend up to 30 seconds disconnecting the remote while this call starts a replacement from the captured record. The delete then revokes/removes the link and may close the listener without stopping that replacement; if it exits, the supervisor's still-stale internal store can also retry it, leaving a hidden SSH process or retry loop after a successful disconnect. The reconnects map only coalesces reconnects, so serialize reconnect against the full removal transaction or otherwise reserve the link against new spawns until removal finishes.

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} catch (error) {
setActionError(linkActionError(error));
} finally {
setBusy(null);

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P2 Badge Keep Retry disabled until the refresh finishes

If the reconnect POST succeeds but the following status GET is slow, clearing busy here renders the old failed/reconnecting state with Retry enabled while refreshStatus() is still pending. A user clicking it again sends a new reconnect after the first request's coalescing promise has completed, immediately terminating the freshly spawned SSH child and extending the outage; keep the busy state through the refresh.

Useful? React with 👍 / 👎.

@lidge-jun

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Owner

Carried onto dev as #6915, together with the review fixes. Your six commits keep your authorship, and the fix commit has a Co-authored-by trailer. The fixes serialize reconnect with reload, removal and shutdown, hold DELETE until removal finishes, make global stop wait for a draining reconnect child, and keep Retry disabled until its refresh completes. GitHub rejected maintainer pushes to this fork branch (403), so the fixes could not go here. Thank you for the fix!

lidge-jun added a commit that referenced this pull request Oct 10, 2026
…reconnect (carry #6900) (#6915)

* fix(link): reconnect the Home's -R tunnel after sleep and outages

The Home ran its link tunnels without a retry policy, so a failed link
stayed failed until a proxy restart. A retry that came back up was also
promoted only by a catalog request from the Child, so an idle Child's
healthy reconnect was killed at the five-minute outage limit: one network
blip took the link down for good.

- run the Home supervisor with HOME_TUNNEL_RETRY_POLICY, the same cadence
  as the Child's own tunnel (timeout/forward 60 s, auth 5 min, host key never)
- promote a retry whose ssh child outlives a 15 s grace, longer than ssh's
  ConnectTimeout, as five seconds already promotes a first attempt
- keep a retry running while the state reads failed, and let a retry that
  started just before the outage limit finish its grace
- spawn on reload only for a fresh link or a due attempt
- report an exit even when its stderr cannot be read
- document the Home policy in structure/remote-link.md and the Remote Link
  guide (all locales)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(link): promote a retry before applying the outage limit

A retry whose grace ended on the tick that reached FAILED_AFTER_MS, or one
still running when a tick arrived late after a sleep, was first reduced to
failed and then killed instead of promoted. Check promotion before the tick
so a child that has outlived its grace is kept.

Addresses the Codex review on #6900.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(link): keep a draining exit from being overtaken by the outage clock

The exit handler drops the child before it awaits stderr. A tick in that
window could fail the link on the outage clock with a one-minute retryAt,
and the host-key exit that followed was then ignored, so a changed host
key was retried. Skip the tick while an exit is still being classified.

Addresses the second Codex review on #6900.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* feat(link): make Retry restart a Home link's tunnel

In the failed state the dashboard's Retry only re-read /api/link/status,
so a link the supervisor had given up on stayed failed until a proxy
restart. Retry now restarts the tunnel of each failed or reconnecting
Home-initiated link, without restarting OpenCodex.

- LinkSupervisor.reconnect(linkId): wait for a running reload, stop the
  link's child, forget its backoff or failed state and spawn a fresh attempt
- POST /api/link/{id}/reconnect for a dashboard session or the loopback
  admin token; a Child-initiated link is refused (409
  link_not_home_initiated) because the Child owns that tunnel
- ocx link reconnect --link-id <id> [--json]
- an exit that finishes after a reconnect started a fresh child no longer
  overwrites the new attempt's state
- docs: Remote Link guide (all locales), structure docs, generated ocx
  skill surface

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* docs(link): state what the retry grace does and does not prove

ConnectTimeout covers the TCP connect, the SSH handshake and key exchange;
authentication and the remote forward request come after it. Say so in the
supervisor comment and structure/remote-link.md, and record that liveness
promotion is the same heuristic the first attempt uses.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(link): scope exits and stops to their child generation, gate reconnect on the listener

- every spawn bumps a per-link generation; an exit still classifying its
  stderr, or a stop still waiting for its child, applies only while its
  generation is current, so a reconnect's new child keeps its own state
- the draining marker records its generation and is cleared by a newer spawn
- overlapping reconnects for one link share one restart
- POST /api/link/{id}/reconnect requires the link listener to be listening
  (503 listener_unavailable), as apply does, before it starts a forward
- structure/remote-link.md lists ocx link reconnect in the CLI inventory

Addresses the CodeRabbit and Codex reviews of c0a377a on #6900.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(link): serialize reconnect with reload, removal and shutdown

- Run reconnect, reload, stopLink and shutdown through one per-supervisor lifecycle queue. After the old child exits, re-resolve the current record and listener ownership, so a link removed, changed or made client-owned during the wait is never respawned (review R1, R1b, R1c; Codex P2).
- DELETE holds its link through child stop, remote disconnect, key revocation and store removal, then reloads the supervisor store before releasing the hold.
- Global stop now waits for a reconnect's draining child (review R2).
- Retry stays disabled until the status refresh after reconnect completes (Codex P2).

Co-authored-by: WOULDU-pres <72803972+WOULDU-pres@users.noreply.github.com>

* fix(link): issue Home-link reconnects concurrently

React Doctor flags await inside a loop. Reconnect requests are independent,
so send them together and surface the first failure before refreshing.

Co-authored-by: WOULDU-pres <72803972+WOULDU-pres@users.noreply.github.com>

* fix(link): bound tunnel output drain after ssh exits

Allow 250ms for tunnel output to drain after process exit, then cancel
and release the readers while preserving diagnostics already consumed.
Keep host-key and auth classification intact when descendants retain
pipes, and prove supervisor retries and outage handling can proceed.

Co-authored-by: WOULDU-pres <72803972+WOULDU-pres@users.noreply.github.com>

---------

Co-authored-by: WOULDU-pres <72803972+WOULDU-pres@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
@lidge-jun

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Closing as superseded by #6915, which carries this change with your authorship preserved (Co-authored-by). It landed on dev as squash 09b3e76b97, after independent review and exact-head CI. Thank you!

@lidge-jun lidge-jun closed this Oct 10, 2026
WOULDU-pres added a commit to WOULDU-pres/opencodex-1 that referenced this pull request Oct 10, 2026
…il refresh

- the public stopLink (removal, compensation) now holds the link: neither
  the tick nor reconnect starts it again until the next reload, so a
  reconnect overlapping DELETE /api/link/{id} cannot leave a tunnel running
  after the link is gone; a failed remote disconnect still restarts the
  tunnel through its reload, which ends the hold
- the dashboard keeps Retry disabled until the status read after the
  reconnect lands, so a second click cannot kill the tunnel just started

Addresses the Codex review of ffc939d on lidge-jun#6900.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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