[Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it) #4723

Open
Open
[Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it)#4723

Description

@alexito4
alexito4
opened on Jul 28, 2026

Before submitting

  • I searched existing issues and did not find a duplicate.
  • I included enough detail to reproduce or investigate the problem.

Area

apps/server

Steps to reproduce

  1. Start a thread and let its provider session reach status: "running" with an active turn, bound to a git worktree.
  2. Outside the app, delete that worktree's directory (e.g. it was removed by other tooling, or manually).
  3. The provider process/cwd for that thread is gone, but nothing updates the thread's session state.
  4. Try to archive the thread from the sidebar.

Expected behavior

The thread's session should eventually reflect that the underlying process/worktree is gone (e.g. via the idle/session reaper), or archiving should be possible once that's detected.

Actual behavior

The thread is permanently stuck. The client's archive guard (apps/web/src/hooks/useThreadActions.ts:158-172) refuses to archive any thread with session.status === "running" and a non-null activeTurnId. ProviderSessionReaper (apps/server/src/provider/Layers/ProviderSessionReaper.ts:59-67) unconditionally skips any thread with activeTurnId set, no matter how stale, so nothing ever clears it automatically.

Impact

Minor bug or occasional failure

Version or commit

main @ 4f584da

Workaround

Switch the thread to a different branch/worktree via the branch toolbar selector — this triggers thread.session.stop, which unconditionally sets status: "stopped", activeTurnId: null through the normal event path. Avoid using the regular Stop button first, since turn-interrupt uses allowRecovery: true and may try to restart the session in the missing worktree.

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      , 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
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function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
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} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

      Skip to content
      [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it) #4723
      Open
      Open
      [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it)#4723
      Description
      @alexito4
      alexito4
      opened on Jul 28, 2026
      Before submitting
      •  I searched existing issues and did not find a duplicate.
      •  I included enough detail to reproduce or investigate the problem.
      Area
      apps/server
      Steps to reproduce
      1. Start a thread and let its provider session reach status: "running" with an active turn, bound to a git worktree.
      2. Outside the app, delete that worktree's directory (e.g. it was removed by other tooling, or manually).
      3. The provider process/cwd for that thread is gone, but nothing updates the thread's session state.
      4. Try to archive the thread from the sidebar.
      Expected behavior
      The thread's session should eventually reflect that the underlying process/worktree is gone (e.g. via the idle/session reaper), or archiving should be possible once that's detected.
      Actual behavior
      The thread is permanently stuck. The client's archive guard (apps/web/src/hooks/useThreadActions.ts:158-172) refuses to archive any thread with session.status === "running" and a non-null activeTurnId. ProviderSessionReaper (apps/server/src/provider/Layers/ProviderSessionReaper.ts:59-67) unconditionally skips any thread with activeTurnId set, no matter how stale, so nothing ever clears it automatically.
      Impact
      Minor bug or occasional failure
      Version or commit
      main @ 4f584da
      Workaround
      Switch the thread to a different branch/worktree via the branch toolbar selector — this triggers thread.session.stop, which unconditionally sets status: "stopped", activeTurnId: null through the normal event path. Avoid using the regular Stop button first, since turn-interrupt uses allowRecovery: true and may try to restart the session in the missing worktree.
      Metadata
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      No one assigned
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        No labels
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        No type
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        No projects
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          No milestone
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          None yet
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          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
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style.textContent = '
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color-scheme: dark light;
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.markdown-body blockquote { border-left-color: #8b949e; }
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} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it) #4723
          Open
          Open
          [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it)#4723
          Description
          @alexito4
          alexito4
          opened on Jul 28, 2026
          Before submitting
          •  I searched existing issues and did not find a duplicate.
          •  I included enough detail to reproduce or investigate the problem.
          Area
          apps/server
          Steps to reproduce
          1. Start a thread and let its provider session reach status: "running" with an active turn, bound to a git worktree.
          2. Outside the app, delete that worktree's directory (e.g. it was removed by other tooling, or manually).
          3. The provider process/cwd for that thread is gone, but nothing updates the thread's session state.
          4. Try to archive the thread from the sidebar.
          Expected behavior
          The thread's session should eventually reflect that the underlying process/worktree is gone (e.g. via the idle/session reaper), or archiving should be possible once that's detected.
          Actual behavior
          The thread is permanently stuck. The client's archive guard (apps/web/src/hooks/useThreadActions.ts:158-172) refuses to archive any thread with session.status === "running" and a non-null activeTurnId. ProviderSessionReaper (apps/server/src/provider/Layers/ProviderSessionReaper.ts:59-67) unconditionally skips any thread with activeTurnId set, no matter how stale, so nothing ever clears it automatically.
          Impact
          Minor bug or occasional failure
          Version or commit
          main @ 4f584da
          Workaround
          Switch the thread to a different branch/worktree via the branch toolbar selector — this triggers thread.session.stop, which unconditionally sets status: "stopped", activeTurnId: null through the normal event path. Avoid using the regular Stop button first, since turn-interrupt uses allowRecovery: true and may try to restart the session in the missing worktree.
          Metadata
          Metadata
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          No one assigned
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            No type
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            No projects
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              No milestone
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              None yet
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              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
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var url = new URL(ref);
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if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
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var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
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parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
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var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
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node.parentNode.replaceChild(frag, node);
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} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
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Array.from(node.childNodes).forEach(highlight);
}
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highlight(document.body);
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mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
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observer.observe(document.body, { childList: true, subtree: true });
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} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it) #4723
              Open
              Open
              [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it)#4723
              Description
              @alexito4
              alexito4
              opened on Jul 28, 2026
              Before submitting
              •  I searched existing issues and did not find a duplicate.
              •  I included enough detail to reproduce or investigate the problem.
              Area
              apps/server
              Steps to reproduce
              1. Start a thread and let its provider session reach status: "running" with an active turn, bound to a git worktree.
              2. Outside the app, delete that worktree's directory (e.g. it was removed by other tooling, or manually).
              3. The provider process/cwd for that thread is gone, but nothing updates the thread's session state.
              4. Try to archive the thread from the sidebar.
              Expected behavior
              The thread's session should eventually reflect that the underlying process/worktree is gone (e.g. via the idle/session reaper), or archiving should be possible once that's detected.
              Actual behavior
              The thread is permanently stuck. The client's archive guard (apps/web/src/hooks/useThreadActions.ts:158-172) refuses to archive any thread with session.status === "running" and a non-null activeTurnId. ProviderSessionReaper (apps/server/src/provider/Layers/ProviderSessionReaper.ts:59-67) unconditionally skips any thread with activeTurnId set, no matter how stale, so nothing ever clears it automatically.
              Impact
              Minor bug or occasional failure
              Version or commit
              main @ 4f584da
              Workaround
              Switch the thread to a different branch/worktree via the branch toolbar selector — this triggers thread.session.stop, which unconditionally sets status: "stopped", activeTurnId: null through the normal event path. Avoid using the regular Stop button first, since turn-interrupt uses allowRecovery: true and may try to restart the session in the missing worktree.
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                No labels
                No labels
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it) #4723
                  Open
                  Open
                  [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it)#4723
                  Description
                  @alexito4
                  alexito4
                  opened on Jul 28, 2026
                  Before submitting
                  •  I searched existing issues and did not find a duplicate.
                  •  I included enough detail to reproduce or investigate the problem.
                  Area
                  apps/server
                  Steps to reproduce
                  1. Start a thread and let its provider session reach status: "running" with an active turn, bound to a git worktree.
                  2. Outside the app, delete that worktree's directory (e.g. it was removed by other tooling, or manually).
                  3. The provider process/cwd for that thread is gone, but nothing updates the thread's session state.
                  4. Try to archive the thread from the sidebar.
                  Expected behavior
                  The thread's session should eventually reflect that the underlying process/worktree is gone (e.g. via the idle/session reaper), or archiving should be possible once that's detected.
                  Actual behavior
                  The thread is permanently stuck. The client's archive guard (apps/web/src/hooks/useThreadActions.ts:158-172) refuses to archive any thread with session.status === "running" and a non-null activeTurnId. ProviderSessionReaper (apps/server/src/provider/Layers/ProviderSessionReaper.ts:59-67) unconditionally skips any thread with activeTurnId set, no matter how stale, so nothing ever clears it automatically.
                  Impact
                  Minor bug or occasional failure
                  Version or commit
                  main @ 4f584da
                  Workaround
                  Switch the thread to a different branch/worktree via the branch toolbar selector — this triggers thread.session.stop, which unconditionally sets status: "stopped", activeTurnId: null through the normal event path. Avoid using the regular Stop button first, since turn-interrupt uses allowRecovery: true and may try to restart the session in the missing worktree.
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it) #4723
                      Open
                      Open
                      [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it)#4723
                      Description
                      @alexito4
                      alexito4
                      opened on Jul 28, 2026
                      Before submitting
                      •  I searched existing issues and did not find a duplicate.
                      •  I included enough detail to reproduce or investigate the problem.
                      Area
                      apps/server
                      Steps to reproduce
                      1. Start a thread and let its provider session reach status: "running" with an active turn, bound to a git worktree.
                      2. Outside the app, delete that worktree's directory (e.g. it was removed by other tooling, or manually).
                      3. The provider process/cwd for that thread is gone, but nothing updates the thread's session state.
                      4. Try to archive the thread from the sidebar.
                      Expected behavior
                      The thread's session should eventually reflect that the underlying process/worktree is gone (e.g. via the idle/session reaper), or archiving should be possible once that's detected.
                      Actual behavior
                      The thread is permanently stuck. The client's archive guard (apps/web/src/hooks/useThreadActions.ts:158-172) refuses to archive any thread with session.status === "running" and a non-null activeTurnId. ProviderSessionReaper (apps/server/src/provider/Layers/ProviderSessionReaper.ts:59-67) unconditionally skips any thread with activeTurnId set, no matter how stale, so nothing ever clears it automatically.
                      Impact
                      Minor bug or occasional failure
                      Version or commit
                      main @ 4f584da
                      Workaround
                      Switch the thread to a different branch/worktree via the branch toolbar selector — this triggers thread.session.stop, which unconditionally sets status: "stopped", activeTurnId: null through the normal event path. Avoid using the regular Stop button first, since turn-interrupt uses allowRecovery: true and may try to restart the session in the missing worktree.
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        No labels
                        No labels
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it) #4723
                          Open
                          Open
                          [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it)#4723
                          Description
                          @alexito4
                          alexito4
                          opened on Jul 28, 2026
                          Before submitting
                          •  I searched existing issues and did not find a duplicate.
                          •  I included enough detail to reproduce or investigate the problem.
                          Area
                          apps/server
                          Steps to reproduce
                          1. Start a thread and let its provider session reach status: "running" with an active turn, bound to a git worktree.
                          2. Outside the app, delete that worktree's directory (e.g. it was removed by other tooling, or manually).
                          3. The provider process/cwd for that thread is gone, but nothing updates the thread's session state.
                          4. Try to archive the thread from the sidebar.
                          Expected behavior
                          The thread's session should eventually reflect that the underlying process/worktree is gone (e.g. via the idle/session reaper), or archiving should be possible once that's detected.
                          Actual behavior
                          The thread is permanently stuck. The client's archive guard (apps/web/src/hooks/useThreadActions.ts:158-172) refuses to archive any thread with session.status === "running" and a non-null activeTurnId. ProviderSessionReaper (apps/server/src/provider/Layers/ProviderSessionReaper.ts:59-67) unconditionally skips any thread with activeTurnId set, no matter how stale, so nothing ever clears it automatically.
                          Impact
                          Minor bug or occasional failure
                          Version or commit
                          main @ 4f584da
                          Workaround
                          Switch the thread to a different branch/worktree via the branch toolbar selector — this triggers thread.session.stop, which unconditionally sets status: "stopped", activeTurnId: null through the normal event path. Avoid using the regular Stop button first, since turn-interrupt uses allowRecovery: true and may try to restart the session in the missing worktree.
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            No labels
                            No labels
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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                              [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it) #4723
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                              [Bug]: Deleting a thread's worktree while its session is "running" permanently wedges the thread (archive blocked, reaper never clears it)#4723
                              Description
                              @alexito4
                              alexito4
                              opened on Jul 28, 2026
                              Before submitting
                              •  I searched existing issues and did not find a duplicate.
                              •  I included enough detail to reproduce or investigate the problem.
                              Area
                              apps/server
                              Steps to reproduce
                              1. Start a thread and let its provider session reach status: "running" with an active turn, bound to a git worktree.
                              2. Outside the app, delete that worktree's directory (e.g. it was removed by other tooling, or manually).
                              3. The provider process/cwd for that thread is gone, but nothing updates the thread's session state.
                              4. Try to archive the thread from the sidebar.
                              Expected behavior
                              The thread's session should eventually reflect that the underlying process/worktree is gone (e.g. via the idle/session reaper), or archiving should be possible once that's detected.
                              Actual behavior
                              The thread is permanently stuck. The client's archive guard (apps/web/src/hooks/useThreadActions.ts:158-172) refuses to archive any thread with session.status === "running" and a non-null activeTurnId. ProviderSessionReaper (apps/server/src/provider/Layers/ProviderSessionReaper.ts:59-67) unconditionally skips any thread with activeTurnId set, no matter how stale, so nothing ever clears it automatically.
                              Impact
                              Minor bug or occasional failure
                              Version or commit
                              main @ 4f584da
                              Workaround
                              Switch the thread to a different branch/worktree via the branch toolbar selector — this triggers thread.session.stop, which unconditionally sets status: "stopped", activeTurnId: null through the normal event path. Avoid using the regular Stop button first, since turn-interrupt uses allowRecovery: true and may try to restart the session in the missing worktree.
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