Unbounded in-memory growth: timeline + per-message MarkdownState never evicted #117

Closed
#252
Closed
Unbounded in-memory growth: timeline + per-message MarkdownState never evicted#117
#252
Labels
performanceRuntime performance, latency, resource footprint

Description

@Tryanks
Tryanks
opened on Jul 19, 2026

Status — partially optimized, still open (reviewed 2026-08-22)

Several later changes reduced rendering and cloning cost (and chat.rs has been split into chat/mod.rs + chat/model.rs), but they did not bound retained memory:

  • Timeline.entries and child entries are Arc-backed, so read-model snapshots avoid cloning large payloads.
  • The chat and diff surfaces use virtual lists with a windowed pre-measure viewport (crates/ui/src/chat/model.rs:647), limiting row construction and paint work.
  • Child progress has a cap.

The original top-level retention issue remains:

  • Timeline.entries and Timeline.turns retain the full folded session history.
  • ChatView::sync_markdown_states (crates/ui/src/chat/mod.rs:133) still walks all timeline entries and inserts one MarkdownState per user/assistant/reasoning block into md_states (chat/mod.rs:70).
  • md_states is cleared on session change (chat/mod.rs:177), but there is no within-session eviction/window; virtualizing rows does not release these parsed Markdown states.

Next step

  1. Build a repeatable long-session memory harness and record retained memory by entry type.
  2. Define a viewport/turn window with hysteresis.
  3. Evict off-window MarkdownState entities and lazily rebuild them while preserving scroll anchors and selection behavior.
  4. Decide separately whether old folded timeline payloads can be paged from JSONL, summarized, or compacted without breaking rewind/diff/review semantics.

Acceptance criteria

  • A scripted long session reaches a measured steady-state UI-memory ceiling.
  • Scrolling back rebuilds evicted Markdown correctly.
  • Selection, copy, search, turn navigation, and scroll position remain correct across eviction.
  • The before/after memory profile is recorded.

Effort: L · Risk: MED

Activity

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      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
       blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} 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
      Unbounded in-memory growth: timeline + per-message MarkdownState never evicted #117
      Closed
      #252
      Closed
      Unbounded in-memory growth: timeline + per-message MarkdownState never evicted#117
      #252
      Labels
      performanceRuntime performance, latency, resource footprint
      Description
      @Tryanks
      Tryanks
      opened on Jul 19, 2026
      Status — partially optimized, still open (reviewed 2026-08-22)
      Several later changes reduced rendering and cloning cost (and chat.rs has been split into chat/mod.rs + chat/model.rs), but they did not bound retained memory:
      • Timeline.entries and child entries are Arc-backed, so read-model snapshots avoid cloning large payloads.
      • The chat and diff surfaces use virtual lists with a windowed pre-measure viewport (crates/ui/src/chat/model.rs:647), limiting row construction and paint work.
      • Child progress has a cap.
      The original top-level retention issue remains:
      • Timeline.entries and Timeline.turns retain the full folded session history.
      • ChatView::sync_markdown_states (crates/ui/src/chat/mod.rs:133) still walks all timeline entries and inserts one MarkdownState per user/assistant/reasoning block into md_states (chat/mod.rs:70).
      • md_states is cleared on session change (chat/mod.rs:177), but there is no within-session eviction/window; virtualizing rows does not release these parsed Markdown states.
      Next step
      1. Build a repeatable long-session memory harness and record retained memory by entry type.
      2. Define a viewport/turn window with hysteresis.
      3. Evict off-window MarkdownState entities and lazily rebuild them while preserving scroll anchors and selection behavior.
      4. Decide separately whether old folded timeline payloads can be paged from JSONL, summarized, or compacted without breaking rewind/diff/review semantics.
      Acceptance criteria
      • A scripted long session reaches a measured steady-state UI-memory ceiling.
      • Scrolling back rebuilds evicted Markdown correctly.
      • Selection, copy, search, turn navigation, and scroll position remain correct across eviction.
      • The before/after memory profile is recorded.
      Effort: L · Risk: MED
      Activity
      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
      Metadata
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      Assignees
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        Labels
        performanceRuntime performance, latency, resource footprint
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          None yet
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          Unbounded in-memory growth: timeline + per-message MarkdownState never evicted #117
          Closed
          #252
          Closed
          Unbounded in-memory growth: timeline + per-message MarkdownState never evicted#117
          #252
          Labels
          performanceRuntime performance, latency, resource footprint
          Description
          @Tryanks
          Tryanks
          opened on Jul 19, 2026
          Status — partially optimized, still open (reviewed 2026-08-22)
          Several later changes reduced rendering and cloning cost (and chat.rs has been split into chat/mod.rs + chat/model.rs), but they did not bound retained memory:
          • Timeline.entries and child entries are Arc-backed, so read-model snapshots avoid cloning large payloads.
          • The chat and diff surfaces use virtual lists with a windowed pre-measure viewport (crates/ui/src/chat/model.rs:647), limiting row construction and paint work.
          • Child progress has a cap.
          The original top-level retention issue remains:
          • Timeline.entries and Timeline.turns retain the full folded session history.
          • ChatView::sync_markdown_states (crates/ui/src/chat/mod.rs:133) still walks all timeline entries and inserts one MarkdownState per user/assistant/reasoning block into md_states (chat/mod.rs:70).
          • md_states is cleared on session change (chat/mod.rs:177), but there is no within-session eviction/window; virtualizing rows does not release these parsed Markdown states.
          Next step
          1. Build a repeatable long-session memory harness and record retained memory by entry type.
          2. Define a viewport/turn window with hysteresis.
          3. Evict off-window MarkdownState entities and lazily rebuild them while preserving scroll anchors and selection behavior.
          4. Decide separately whether old folded timeline payloads can be paged from JSONL, summarized, or compacted without breaking rewind/diff/review semantics.
          Acceptance criteria
          • A scripted long session reaches a measured steady-state UI-memory ceiling.
          • Scrolling back rebuilds evicted Markdown correctly.
          • Selection, copy, search, turn navigation, and scroll position remain correct across eviction.
          • The before/after memory profile is recorded.
          Effort: L · Risk: MED
          Activity
          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            performanceRuntime performance, latency, resource footprint
            Projects
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              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Unbounded in-memory growth: timeline + per-message MarkdownState never evicted #117
              Closed
              #252
              Closed
              Unbounded in-memory growth: timeline + per-message MarkdownState never evicted#117
              #252
              Labels
              performanceRuntime performance, latency, resource footprint
              Description
              @Tryanks
              Tryanks
              opened on Jul 19, 2026
              Status — partially optimized, still open (reviewed 2026-08-22)
              Several later changes reduced rendering and cloning cost (and chat.rs has been split into chat/mod.rs + chat/model.rs), but they did not bound retained memory:
              • Timeline.entries and child entries are Arc-backed, so read-model snapshots avoid cloning large payloads.
              • The chat and diff surfaces use virtual lists with a windowed pre-measure viewport (crates/ui/src/chat/model.rs:647), limiting row construction and paint work.
              • Child progress has a cap.
              The original top-level retention issue remains:
              • Timeline.entries and Timeline.turns retain the full folded session history.
              • ChatView::sync_markdown_states (crates/ui/src/chat/mod.rs:133) still walks all timeline entries and inserts one MarkdownState per user/assistant/reasoning block into md_states (chat/mod.rs:70).
              • md_states is cleared on session change (chat/mod.rs:177), but there is no within-session eviction/window; virtualizing rows does not release these parsed Markdown states.
              Next step
              1. Build a repeatable long-session memory harness and record retained memory by entry type.
              2. Define a viewport/turn window with hysteresis.
              3. Evict off-window MarkdownState entities and lazily rebuild them while preserving scroll anchors and selection behavior.
              4. Decide separately whether old folded timeline payloads can be paged from JSONL, summarized, or compacted without breaking rewind/diff/review semantics.
              Acceptance criteria
              • A scripted long session reaches a measured steady-state UI-memory ceiling.
              • Scrolling back rebuilds evicted Markdown correctly.
              • Selection, copy, search, turn navigation, and scroll position remain correct across eviction.
              • The before/after memory profile is recorded.
              Effort: L · Risk: MED
              Activity
              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                performanceRuntime performance, latency, resource footprint
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} 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
                  Unbounded in-memory growth: timeline + per-message MarkdownState never evicted #117
                  Closed
                  #252
                  Closed
                  Unbounded in-memory growth: timeline + per-message MarkdownState never evicted#117
                  #252
                  Labels
                  performanceRuntime performance, latency, resource footprint
                  Description
                  @Tryanks
                  Tryanks
                  opened on Jul 19, 2026
                  Status — partially optimized, still open (reviewed 2026-08-22)
                  Several later changes reduced rendering and cloning cost (and chat.rs has been split into chat/mod.rs + chat/model.rs), but they did not bound retained memory:
                  • Timeline.entries and child entries are Arc-backed, so read-model snapshots avoid cloning large payloads.
                  • The chat and diff surfaces use virtual lists with a windowed pre-measure viewport (crates/ui/src/chat/model.rs:647), limiting row construction and paint work.
                  • Child progress has a cap.
                  The original top-level retention issue remains:
                  • Timeline.entries and Timeline.turns retain the full folded session history.
                  • ChatView::sync_markdown_states (crates/ui/src/chat/mod.rs:133) still walks all timeline entries and inserts one MarkdownState per user/assistant/reasoning block into md_states (chat/mod.rs:70).
                  • md_states is cleared on session change (chat/mod.rs:177), but there is no within-session eviction/window; virtualizing rows does not release these parsed Markdown states.
                  Next step
                  1. Build a repeatable long-session memory harness and record retained memory by entry type.
                  2. Define a viewport/turn window with hysteresis.
                  3. Evict off-window MarkdownState entities and lazily rebuild them while preserving scroll anchors and selection behavior.
                  4. Decide separately whether old folded timeline payloads can be paged from JSONL, summarized, or compacted without breaking rewind/diff/review semantics.
                  Acceptance criteria
                  • A scripted long session reaches a measured steady-state UI-memory ceiling.
                  • Scrolling back rebuilds evicted Markdown correctly.
                  • Selection, copy, search, turn navigation, and scroll position remain correct across eviction.
                  • The before/after memory profile is recorded.
                  Effort: L · Risk: MED
                  Activity
                  Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    performanceRuntime performance, latency, resource footprint
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      Unbounded in-memory growth: timeline + per-message MarkdownState never evicted #117
                      Closed
                      #252
                      Closed
                      Unbounded in-memory growth: timeline + per-message MarkdownState never evicted#117
                      #252
                      Labels
                      performanceRuntime performance, latency, resource footprint
                      Description
                      @Tryanks
                      Tryanks
                      opened on Jul 19, 2026
                      Status — partially optimized, still open (reviewed 2026-08-22)
                      Several later changes reduced rendering and cloning cost (and chat.rs has been split into chat/mod.rs + chat/model.rs), but they did not bound retained memory:
                      • Timeline.entries and child entries are Arc-backed, so read-model snapshots avoid cloning large payloads.
                      • The chat and diff surfaces use virtual lists with a windowed pre-measure viewport (crates/ui/src/chat/model.rs:647), limiting row construction and paint work.
                      • Child progress has a cap.
                      The original top-level retention issue remains:
                      • Timeline.entries and Timeline.turns retain the full folded session history.
                      • ChatView::sync_markdown_states (crates/ui/src/chat/mod.rs:133) still walks all timeline entries and inserts one MarkdownState per user/assistant/reasoning block into md_states (chat/mod.rs:70).
                      • md_states is cleared on session change (chat/mod.rs:177), but there is no within-session eviction/window; virtualizing rows does not release these parsed Markdown states.
                      Next step
                      1. Build a repeatable long-session memory harness and record retained memory by entry type.
                      2. Define a viewport/turn window with hysteresis.
                      3. Evict off-window MarkdownState entities and lazily rebuild them while preserving scroll anchors and selection behavior.
                      4. Decide separately whether old folded timeline payloads can be paged from JSONL, summarized, or compacted without breaking rewind/diff/review semantics.
                      Acceptance criteria
                      • A scripted long session reaches a measured steady-state UI-memory ceiling.
                      • Scrolling back rebuilds evicted Markdown correctly.
                      • Selection, copy, search, turn navigation, and scroll position remain correct across eviction.
                      • The before/after memory profile is recorded.
                      Effort: L · Risk: MED
                      Activity
                      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        performanceRuntime performance, latency, resource footprint
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          Unbounded in-memory growth: timeline + per-message MarkdownState never evicted #117
                          Closed
                          #252
                          Closed
                          Unbounded in-memory growth: timeline + per-message MarkdownState never evicted#117
                          #252
                          Labels
                          performanceRuntime performance, latency, resource footprint
                          Description
                          @Tryanks
                          Tryanks
                          opened on Jul 19, 2026
                          Status — partially optimized, still open (reviewed 2026-08-22)
                          Several later changes reduced rendering and cloning cost (and chat.rs has been split into chat/mod.rs + chat/model.rs), but they did not bound retained memory:
                          • Timeline.entries and child entries are Arc-backed, so read-model snapshots avoid cloning large payloads.
                          • The chat and diff surfaces use virtual lists with a windowed pre-measure viewport (crates/ui/src/chat/model.rs:647), limiting row construction and paint work.
                          • Child progress has a cap.
                          The original top-level retention issue remains:
                          • Timeline.entries and Timeline.turns retain the full folded session history.
                          • ChatView::sync_markdown_states (crates/ui/src/chat/mod.rs:133) still walks all timeline entries and inserts one MarkdownState per user/assistant/reasoning block into md_states (chat/mod.rs:70).
                          • md_states is cleared on session change (chat/mod.rs:177), but there is no within-session eviction/window; virtualizing rows does not release these parsed Markdown states.
                          Next step
                          1. Build a repeatable long-session memory harness and record retained memory by entry type.
                          2. Define a viewport/turn window with hysteresis.
                          3. Evict off-window MarkdownState entities and lazily rebuild them while preserving scroll anchors and selection behavior.
                          4. Decide separately whether old folded timeline payloads can be paged from JSONL, summarized, or compacted without breaking rewind/diff/review semantics.
                          Acceptance criteria
                          • A scripted long session reaches a measured steady-state UI-memory ceiling.
                          • Scrolling back rebuilds evicted Markdown correctly.
                          • Selection, copy, search, turn navigation, and scroll position remain correct across eviction.
                          • The before/after memory profile is recorded.
                          Effort: L · Risk: MED
                          Activity
                          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            performanceRuntime performance, latency, resource footprint
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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                              Unbounded in-memory growth: timeline + per-message MarkdownState never evicted #117
                              Closed
                              #252
                              Closed
                              Unbounded in-memory growth: timeline + per-message MarkdownState never evicted#117
                              #252
                              Labels
                              performanceRuntime performance, latency, resource footprint
                              Description
                              @Tryanks
                              Tryanks
                              opened on Jul 19, 2026
                              Status — partially optimized, still open (reviewed 2026-08-22)
                              Several later changes reduced rendering and cloning cost (and chat.rs has been split into chat/mod.rs + chat/model.rs), but they did not bound retained memory:
                              • Timeline.entries and child entries are Arc-backed, so read-model snapshots avoid cloning large payloads.
                              • The chat and diff surfaces use virtual lists with a windowed pre-measure viewport (crates/ui/src/chat/model.rs:647), limiting row construction and paint work.
                              • Child progress has a cap.
                              The original top-level retention issue remains:
                              • Timeline.entries and Timeline.turns retain the full folded session history.
                              • ChatView::sync_markdown_states (crates/ui/src/chat/mod.rs:133) still walks all timeline entries and inserts one MarkdownState per user/assistant/reasoning block into md_states (chat/mod.rs:70).
                              • md_states is cleared on session change (chat/mod.rs:177), but there is no within-session eviction/window; virtualizing rows does not release these parsed Markdown states.
                              Next step
                              1. Build a repeatable long-session memory harness and record retained memory by entry type.
                              2. Define a viewport/turn window with hysteresis.
                              3. Evict off-window MarkdownState entities and lazily rebuild them while preserving scroll anchors and selection behavior.
                              4. Decide separately whether old folded timeline payloads can be paged from JSONL, summarized, or compacted without breaking rewind/diff/review semantics.
                              Acceptance criteria
                              • A scripted long session reaches a measured steady-state UI-memory ceiling.
                              • Scrolling back rebuilds evicted Markdown correctly.
                              • Selection, copy, search, turn navigation, and scroll position remain correct across eviction.
                              • The before/after memory profile is recorded.
                              Effort: L · Risk: MED
                              Activity
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