Provider permissions: context filtering for denied auto-context #169

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Open
Provider permissions: context filtering for denied auto-context#169
Assignees
Rchari1
Labels
afkImplement + merge unattended

Description

@jeonghun-jj-lee
jeonghun-jj-lee
opened on Aug 10, 2026

Important

Decision Surface

Problem: The system prompt includes auto-context sources (AGENTS.md, instruction files, system-context sources) that may reference files in directories the active model's tier denies. These leak content before any tool call happens.

Approach: At system prompt assembly time, filter out SystemContext.Source entries and instruction files whose paths fall in directories denied by the active model's tier. Suppress them entirely (don't send a placeholder in the system prompt).

Scope: Integration with the system-context assembly pipeline and instruction-context discovery. Requires slice #2 (resolution engine).

Acceptance Criteria

  • Instruction files (AGENTS.md, CLAUDE.md) from denied directories are excluded from the system prompt
  • SystemContext.Source entries whose content originates from denied directories are suppressed
  • Suppression is silent — no placeholder in the system prompt (it simply omits the source)
  • Sources from allowed directories are included normally
  • Sources with no identifiable file path (e.g., core/date) are always included
  • On model switch, the system prompt is re-assembled with the new model's tier filtering applied
  • When no providerPermissions config exists, all sources are included (existing behavior)

Key Decisions

#DecisionRationale
1Silent suppression (not placeholder)System prompt should be clean — a placeholder there is confusing, unlike history where it explains a gap
2Filter at assembly, not at source registrationSources remain registered (they return if the model switches to a trusted tier)

Testing Decisions

  • Test instruction file from denied directory → excluded from assembled prompt
  • Test instruction file from allowed directory → included
  • Test system-context source with file-backed path in denied dir → suppressed
  • Test non-file source (core/date) → always included
  • Test model switch triggers re-assembly with new filtering
  • Test no config → all sources included (backward compatible)

Constraints & Invariants

  • System-context sources need a resolvable file path for filtering; sources without one are always included
  • Re-assembly on model switch must not be expensive (context sources are already cached; this just filters the render list)

Source

Part of #163
Blocked by #165

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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
    Provider permissions: context filtering for denied auto-context #169
    Open
    Open
    Provider permissions: context filtering for denied auto-context#169
    Assignees
    Rchari1
    Labels
    afkImplement + merge unattended
    Description
    @jeonghun-jj-lee
    jeonghun-jj-lee
    opened on Aug 10, 2026
    Important
    Decision Surface
    Problem: The system prompt includes auto-context sources (AGENTS.md, instruction files, system-context sources) that may reference files in directories the active model's tier denies. These leak content before any tool call happens.
    Approach: At system prompt assembly time, filter out SystemContext.Source entries and instruction files whose paths fall in directories denied by the active model's tier. Suppress them entirely (don't send a placeholder in the system prompt).
    Scope: Integration with the system-context assembly pipeline and instruction-context discovery. Requires slice #2 (resolution engine).
    Acceptance Criteria
    •  Instruction files (AGENTS.md, CLAUDE.md) from denied directories are excluded from the system prompt
    • SystemContext.Source entries whose content originates from denied directories are suppressed
    •  Suppression is silent — no placeholder in the system prompt (it simply omits the source)
    •  Sources from allowed directories are included normally
    •  Sources with no identifiable file path (e.g., core/date) are always included
    •  On model switch, the system prompt is re-assembled with the new model's tier filtering applied
    •  When no providerPermissions config exists, all sources are included (existing behavior)
    Key Decisions
    #DecisionRationale
    1Silent suppression (not placeholder)System prompt should be clean — a placeholder there is confusing, unlike history where it explains a gap
    2Filter at assembly, not at source registrationSources remain registered (they return if the model switches to a trusted tier)
    Testing Decisions
    • Test instruction file from denied directory → excluded from assembled prompt
    • Test instruction file from allowed directory → included
    • Test system-context source with file-backed path in denied dir → suppressed
    • Test non-file source (core/date) → always included
    • Test model switch triggers re-assembly with new filtering
    • Test no config → all sources included (backward compatible)
    Constraints & Invariants
    • System-context sources need a resolvable file path for filtering; sources without one are always included
    • Re-assembly on model switch must not be expensive (context sources are already cached; this just filters the render list)
    Source
    Part of #163
    
Blocked by #165
    Metadata
    Metadata
    Assignees
    Labels
    afkImplement + merge unattended
    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)) {
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
      Provider permissions: context filtering for denied auto-context #169
      Open
      Open
      Provider permissions: context filtering for denied auto-context#169
      Assignees
      Rchari1
      Labels
      afkImplement + merge unattended
      Description
      @jeonghun-jj-lee
      jeonghun-jj-lee
      opened on Aug 10, 2026
      Important
      Decision Surface
      Problem: The system prompt includes auto-context sources (AGENTS.md, instruction files, system-context sources) that may reference files in directories the active model's tier denies. These leak content before any tool call happens.
      Approach: At system prompt assembly time, filter out SystemContext.Source entries and instruction files whose paths fall in directories denied by the active model's tier. Suppress them entirely (don't send a placeholder in the system prompt).
      Scope: Integration with the system-context assembly pipeline and instruction-context discovery. Requires slice #2 (resolution engine).
      Acceptance Criteria
      •  Instruction files (AGENTS.md, CLAUDE.md) from denied directories are excluded from the system prompt
      • SystemContext.Source entries whose content originates from denied directories are suppressed
      •  Suppression is silent — no placeholder in the system prompt (it simply omits the source)
      •  Sources from allowed directories are included normally
      •  Sources with no identifiable file path (e.g., core/date) are always included
      •  On model switch, the system prompt is re-assembled with the new model's tier filtering applied
      •  When no providerPermissions config exists, all sources are included (existing behavior)
      Key Decisions
      #DecisionRationale
      1Silent suppression (not placeholder)System prompt should be clean — a placeholder there is confusing, unlike history where it explains a gap
      2Filter at assembly, not at source registrationSources remain registered (they return if the model switches to a trusted tier)
      Testing Decisions
      • Test instruction file from denied directory → excluded from assembled prompt
      • Test instruction file from allowed directory → included
      • Test system-context source with file-backed path in denied dir → suppressed
      • Test non-file source (core/date) → always included
      • Test model switch triggers re-assembly with new filtering
      • Test no config → all sources included (backward compatible)
      Constraints & Invariants
      • System-context sources need a resolvable file path for filtering; sources without one are always included
      • Re-assembly on model switch must not be expensive (context sources are already cached; this just filters the render list)
      Source
      Part of #163
      
Blocked by #165
      Metadata
      Metadata
      Assignees
      Labels
      afkImplement + merge unattended
      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)) {
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
        Provider permissions: context filtering for denied auto-context #169
        Open
        Open
        Provider permissions: context filtering for denied auto-context#169
        Assignees
        Rchari1
        Labels
        afkImplement + merge unattended
        Description
        @jeonghun-jj-lee
        jeonghun-jj-lee
        opened on Aug 10, 2026
        Important
        Decision Surface
        Problem: The system prompt includes auto-context sources (AGENTS.md, instruction files, system-context sources) that may reference files in directories the active model's tier denies. These leak content before any tool call happens.
        Approach: At system prompt assembly time, filter out SystemContext.Source entries and instruction files whose paths fall in directories denied by the active model's tier. Suppress them entirely (don't send a placeholder in the system prompt).
        Scope: Integration with the system-context assembly pipeline and instruction-context discovery. Requires slice #2 (resolution engine).
        Acceptance Criteria
        •  Instruction files (AGENTS.md, CLAUDE.md) from denied directories are excluded from the system prompt
        • SystemContext.Source entries whose content originates from denied directories are suppressed
        •  Suppression is silent — no placeholder in the system prompt (it simply omits the source)
        •  Sources from allowed directories are included normally
        •  Sources with no identifiable file path (e.g., core/date) are always included
        •  On model switch, the system prompt is re-assembled with the new model's tier filtering applied
        •  When no providerPermissions config exists, all sources are included (existing behavior)
        Key Decisions
        #DecisionRationale
        1Silent suppression (not placeholder)System prompt should be clean — a placeholder there is confusing, unlike history where it explains a gap
        2Filter at assembly, not at source registrationSources remain registered (they return if the model switches to a trusted tier)
        Testing Decisions
        • Test instruction file from denied directory → excluded from assembled prompt
        • Test instruction file from allowed directory → included
        • Test system-context source with file-backed path in denied dir → suppressed
        • Test non-file source (core/date) → always included
        • Test model switch triggers re-assembly with new filtering
        • Test no config → all sources included (backward compatible)
        Constraints & Invariants
        • System-context sources need a resolvable file path for filtering; sources without one are always included
        • Re-assembly on model switch must not be expensive (context sources are already cached; this just filters the render list)
        Source
        Part of #163
        
Blocked by #165
        Metadata
        Metadata
        Assignees
        Labels
        afkImplement + merge unattended
        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)) {
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
          Provider permissions: context filtering for denied auto-context #169
          Open
          Open
          Provider permissions: context filtering for denied auto-context#169
          Assignees
          Rchari1
          Labels
          afkImplement + merge unattended
          Description
          @jeonghun-jj-lee
          jeonghun-jj-lee
          opened on Aug 10, 2026
          Important
          Decision Surface
          Problem: The system prompt includes auto-context sources (AGENTS.md, instruction files, system-context sources) that may reference files in directories the active model's tier denies. These leak content before any tool call happens.
          Approach: At system prompt assembly time, filter out SystemContext.Source entries and instruction files whose paths fall in directories denied by the active model's tier. Suppress them entirely (don't send a placeholder in the system prompt).
          Scope: Integration with the system-context assembly pipeline and instruction-context discovery. Requires slice #2 (resolution engine).
          Acceptance Criteria
          •  Instruction files (AGENTS.md, CLAUDE.md) from denied directories are excluded from the system prompt
          • SystemContext.Source entries whose content originates from denied directories are suppressed
          •  Suppression is silent — no placeholder in the system prompt (it simply omits the source)
          •  Sources from allowed directories are included normally
          •  Sources with no identifiable file path (e.g., core/date) are always included
          •  On model switch, the system prompt is re-assembled with the new model's tier filtering applied
          •  When no providerPermissions config exists, all sources are included (existing behavior)
          Key Decisions
          #DecisionRationale
          1Silent suppression (not placeholder)System prompt should be clean — a placeholder there is confusing, unlike history where it explains a gap
          2Filter at assembly, not at source registrationSources remain registered (they return if the model switches to a trusted tier)
          Testing Decisions
          • Test instruction file from denied directory → excluded from assembled prompt
          • Test instruction file from allowed directory → included
          • Test system-context source with file-backed path in denied dir → suppressed
          • Test non-file source (core/date) → always included
          • Test model switch triggers re-assembly with new filtering
          • Test no config → all sources included (backward compatible)
          Constraints & Invariants
          • System-context sources need a resolvable file path for filtering; sources without one are always included
          • Re-assembly on model switch must not be expensive (context sources are already cached; this just filters the render list)
          Source
          Part of #163
          
Blocked by #165
          Metadata
          Metadata
          Assignees
          Labels
          afkImplement + merge unattended
          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)) {
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
            Provider permissions: context filtering for denied auto-context #169
            Open
            Open
            Provider permissions: context filtering for denied auto-context#169
            Assignees
            Rchari1
            Labels
            afkImplement + merge unattended
            Description
            @jeonghun-jj-lee
            jeonghun-jj-lee
            opened on Aug 10, 2026
            Important
            Decision Surface
            Problem: The system prompt includes auto-context sources (AGENTS.md, instruction files, system-context sources) that may reference files in directories the active model's tier denies. These leak content before any tool call happens.
            Approach: At system prompt assembly time, filter out SystemContext.Source entries and instruction files whose paths fall in directories denied by the active model's tier. Suppress them entirely (don't send a placeholder in the system prompt).
            Scope: Integration with the system-context assembly pipeline and instruction-context discovery. Requires slice #2 (resolution engine).
            Acceptance Criteria
            •  Instruction files (AGENTS.md, CLAUDE.md) from denied directories are excluded from the system prompt
            • SystemContext.Source entries whose content originates from denied directories are suppressed
            •  Suppression is silent — no placeholder in the system prompt (it simply omits the source)
            •  Sources from allowed directories are included normally
            •  Sources with no identifiable file path (e.g., core/date) are always included
            •  On model switch, the system prompt is re-assembled with the new model's tier filtering applied
            •  When no providerPermissions config exists, all sources are included (existing behavior)
            Key Decisions
            #DecisionRationale
            1Silent suppression (not placeholder)System prompt should be clean — a placeholder there is confusing, unlike history where it explains a gap
            2Filter at assembly, not at source registrationSources remain registered (they return if the model switches to a trusted tier)
            Testing Decisions
            • Test instruction file from denied directory → excluded from assembled prompt
            • Test instruction file from allowed directory → included
            • Test system-context source with file-backed path in denied dir → suppressed
            • Test non-file source (core/date) → always included
            • Test model switch triggers re-assembly with new filtering
            • Test no config → all sources included (backward compatible)
            Constraints & Invariants
            • System-context sources need a resolvable file path for filtering; sources without one are always included
            • Re-assembly on model switch must not be expensive (context sources are already cached; this just filters the render list)
            Source
            Part of #163
            
Blocked by #165
            Metadata
            Metadata
            Assignees
            Labels
            afkImplement + merge unattended
            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)) {
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
              Provider permissions: context filtering for denied auto-context #169
              Open
              Open
              Provider permissions: context filtering for denied auto-context#169
              Assignees
              Rchari1
              Labels
              afkImplement + merge unattended
              Description
              @jeonghun-jj-lee
              jeonghun-jj-lee
              opened on Aug 10, 2026
              Important
              Decision Surface
              Problem: The system prompt includes auto-context sources (AGENTS.md, instruction files, system-context sources) that may reference files in directories the active model's tier denies. These leak content before any tool call happens.
              Approach: At system prompt assembly time, filter out SystemContext.Source entries and instruction files whose paths fall in directories denied by the active model's tier. Suppress them entirely (don't send a placeholder in the system prompt).
              Scope: Integration with the system-context assembly pipeline and instruction-context discovery. Requires slice #2 (resolution engine).
              Acceptance Criteria
              •  Instruction files (AGENTS.md, CLAUDE.md) from denied directories are excluded from the system prompt
              • SystemContext.Source entries whose content originates from denied directories are suppressed
              •  Suppression is silent — no placeholder in the system prompt (it simply omits the source)
              •  Sources from allowed directories are included normally
              •  Sources with no identifiable file path (e.g., core/date) are always included
              •  On model switch, the system prompt is re-assembled with the new model's tier filtering applied
              •  When no providerPermissions config exists, all sources are included (existing behavior)
              Key Decisions
              #DecisionRationale
              1Silent suppression (not placeholder)System prompt should be clean — a placeholder there is confusing, unlike history where it explains a gap
              2Filter at assembly, not at source registrationSources remain registered (they return if the model switches to a trusted tier)
              Testing Decisions
              • Test instruction file from denied directory → excluded from assembled prompt
              • Test instruction file from allowed directory → included
              • Test system-context source with file-backed path in denied dir → suppressed
              • Test non-file source (core/date) → always included
              • Test model switch triggers re-assembly with new filtering
              • Test no config → all sources included (backward compatible)
              Constraints & Invariants
              • System-context sources need a resolvable file path for filtering; sources without one are always included
              • Re-assembly on model switch must not be expensive (context sources are already cached; this just filters the render list)
              Source
              Part of #163
              
Blocked by #165
              Metadata
              Metadata
              Assignees
              Labels
              afkImplement + merge unattended
              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)) {
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); }
})();
})();

                Skip to content
                Provider permissions: context filtering for denied auto-context #169
                Open
                Open
                Provider permissions: context filtering for denied auto-context#169
                Assignees
                Rchari1
                Labels
                afkImplement + merge unattended
                Description
                @jeonghun-jj-lee
                jeonghun-jj-lee
                opened on Aug 10, 2026
                Important
                Decision Surface
                Problem: The system prompt includes auto-context sources (AGENTS.md, instruction files, system-context sources) that may reference files in directories the active model's tier denies. These leak content before any tool call happens.
                Approach: At system prompt assembly time, filter out SystemContext.Source entries and instruction files whose paths fall in directories denied by the active model's tier. Suppress them entirely (don't send a placeholder in the system prompt).
                Scope: Integration with the system-context assembly pipeline and instruction-context discovery. Requires slice #2 (resolution engine).
                Acceptance Criteria
                •  Instruction files (AGENTS.md, CLAUDE.md) from denied directories are excluded from the system prompt
                • SystemContext.Source entries whose content originates from denied directories are suppressed
                •  Suppression is silent — no placeholder in the system prompt (it simply omits the source)
                •  Sources from allowed directories are included normally
                •  Sources with no identifiable file path (e.g., core/date) are always included
                •  On model switch, the system prompt is re-assembled with the new model's tier filtering applied
                •  When no providerPermissions config exists, all sources are included (existing behavior)
                Key Decisions
                #DecisionRationale
                1Silent suppression (not placeholder)System prompt should be clean — a placeholder there is confusing, unlike history where it explains a gap
                2Filter at assembly, not at source registrationSources remain registered (they return if the model switches to a trusted tier)
                Testing Decisions
                • Test instruction file from denied directory → excluded from assembled prompt
                • Test instruction file from allowed directory → included
                • Test system-context source with file-backed path in denied dir → suppressed
                • Test non-file source (core/date) → always included
                • Test model switch triggers re-assembly with new filtering
                • Test no config → all sources included (backward compatible)
                Constraints & Invariants
                • System-context sources need a resolvable file path for filtering; sources without one are always included
                • Re-assembly on model switch must not be expensive (context sources are already cached; this just filters the render list)
                Source
                Part of #163
                
Blocked by #165
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