Add JSON-file local-mode transport (alternative to WebSocket) #37

Closed
#42
Closed
Add JSON-file local-mode transport (alternative to WebSocket)#37
#42
Labels
P1Should fix before next releaseenhancementNew feature or request

Description

@AndresL230
AndresL230
opened on May 15, 2026

Severity: Medium
Affected repos:middleware-node
Component boundary: middleware (local mode) → on-disk file

Motivation

Transport in src/core/transport.ts defaults to local mode when apiKey is missing and opens ws://127.0.0.1:9847. The VS Code extension does not host that server and has decided not to — see recost-dev/extension#91. Every default-configured SDK in local mode reconnects forever to nothing.

A file-based transport gives users a working "no cloud account" path without a localhost listener: the SDK writes WindowSummary frames to disk; tooling can read them later.

Proposal

Add a local-file transport mode alongside the existing WS mode.

  • Config:RecostConfig.localTransport: "ws" | "file". Default: file. The WS target does not exist (recost-dev/extension#91), so the new default writes telemetry to disk instead of silently dropping it. ws remains as an opt-in. Behavior change for anyone currently using local mode by accident, but their telemetry was going nowhere — so this is strictly an improvement.
  • Wire format: append-only NDJSON. Each line is exactly one JSON.stringify(WindowSummary). Every frame carries a top-level protocolVersion: "1.0" (covers recost-dev/extension#99 for this transport).
  • Location:${RECOST_LOCAL_DIR ?? path.join(os.homedir(), ".recost", "local-telemetry")}/${projectId}.jsonl.
  • Permissions:0o600 on POSIX; document the Windows ACL limitation.
  • Failure modes: disk-full / EACCES drops the oldest queued frame, fires onError once per overflow episode. Never throws.
  • Lifecycle: flush + close stream on dispose().

Open for the implementer

  • Rotation (per-day? per-size? both?) and retention.
  • Multi-process concurrency on the same projectId (POSIX O_APPEND atomicity vs Windows).
  • Whether the existing WS transport is eventually removed (separate issue).

Verification

  • init({ projectId: "proj_x" }) (no localTransport set → uses new default file) + 3 fetch() calls writes 3 NDJSON lines with protocolVersion: "1.0".
  • init({ projectId: "proj_x", localTransport: "ws" }) still attempts the existing WS path.
  • dispose() flushes within 1s.
  • File mode 0o600 on POSIX.

Out of scope

  • Reading the files (no consumer exists — extension explicitly opted out per recost-dev/extension#91).
  • Removing the existing WebSocket transport.
  • Encryption / signing of on-disk frames.

Related

  • recost-dev/extension#91, recost-dev/extension#99
  • Python mirror: cross-referenced in a follow-up comment.

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No one assigned

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    P1Should fix before next releaseenhancementNew feature or request

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      Issue actions

      , '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
      Add JSON-file local-mode transport (alternative to WebSocket) #37
      Closed
      #42
      Closed
      Add JSON-file local-mode transport (alternative to WebSocket)#37
      #42
      Labels
      P1Should fix before next releaseenhancementNew feature or request
      Description
      @AndresL230
      AndresL230
      opened on May 15, 2026
      Severity: Medium
      Affected repos:middleware-node
      Component boundary: middleware (local mode) → on-disk file
      Motivation
      Transport in src/core/transport.ts defaults to local mode when apiKey is missing and opens ws://127.0.0.1:9847. The VS Code extension does not host that server and has decided not to — see recost-dev/extension#91. Every default-configured SDK in local mode reconnects forever to nothing.
      A file-based transport gives users a working "no cloud account" path without a localhost listener: the SDK writes WindowSummary frames to disk; tooling can read them later.
      Proposal
      Add a local-file transport mode alongside the existing WS mode.
      • Config:RecostConfig.localTransport: "ws" | "file". Default: file. The WS target does not exist (recost-dev/extension#91), so the new default writes telemetry to disk instead of silently dropping it. ws remains as an opt-in. Behavior change for anyone currently using local mode by accident, but their telemetry was going nowhere — so this is strictly an improvement.
      • Wire format: append-only NDJSON. Each line is exactly one JSON.stringify(WindowSummary). Every frame carries a top-level protocolVersion: "1.0" (covers recost-dev/extension#99 for this transport).
      • Location:${RECOST_LOCAL_DIR ?? path.join(os.homedir(), ".recost", "local-telemetry")}/${projectId}.jsonl.
      • Permissions:0o600 on POSIX; document the Windows ACL limitation.
      • Failure modes: disk-full / EACCES drops the oldest queued frame, fires onError once per overflow episode. Never throws.
      • Lifecycle: flush + close stream on dispose().
      Open for the implementer
      • Rotation (per-day? per-size? both?) and retention.
      • Multi-process concurrency on the same projectId (POSIX O_APPEND atomicity vs Windows).
      • Whether the existing WS transport is eventually removed (separate issue).
      Verification
      • init({ projectId: "proj_x" }) (no localTransport set → uses new default file) + 3 fetch() calls writes 3 NDJSON lines with protocolVersion: "1.0".
      • init({ projectId: "proj_x", localTransport: "ws" }) still attempts the existing WS path.
      • dispose() flushes within 1s.
      • File mode 0o600 on POSIX.
      Out of scope
      • Reading the files (no consumer exists — extension explicitly opted out per recost-dev/extension#91).
      • Removing the existing WebSocket transport.
      • Encryption / signing of on-disk frames.
      Related
      • recost-dev/extension#91, recost-dev/extension#99
      • Python mirror: cross-referenced in a follow-up comment.
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        P1Should fix before next releaseenhancementNew feature or request
        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
          Add JSON-file local-mode transport (alternative to WebSocket) #37
          Closed
          #42
          Closed
          Add JSON-file local-mode transport (alternative to WebSocket)#37
          #42
          Labels
          P1Should fix before next releaseenhancementNew feature or request
          Description
          @AndresL230
          AndresL230
          opened on May 15, 2026
          Severity: Medium
          Affected repos:middleware-node
          Component boundary: middleware (local mode) → on-disk file
          Motivation
          Transport in src/core/transport.ts defaults to local mode when apiKey is missing and opens ws://127.0.0.1:9847. The VS Code extension does not host that server and has decided not to — see recost-dev/extension#91. Every default-configured SDK in local mode reconnects forever to nothing.
          A file-based transport gives users a working "no cloud account" path without a localhost listener: the SDK writes WindowSummary frames to disk; tooling can read them later.
          Proposal
          Add a local-file transport mode alongside the existing WS mode.
          • Config:RecostConfig.localTransport: "ws" | "file". Default: file. The WS target does not exist (recost-dev/extension#91), so the new default writes telemetry to disk instead of silently dropping it. ws remains as an opt-in. Behavior change for anyone currently using local mode by accident, but their telemetry was going nowhere — so this is strictly an improvement.
          • Wire format: append-only NDJSON. Each line is exactly one JSON.stringify(WindowSummary). Every frame carries a top-level protocolVersion: "1.0" (covers recost-dev/extension#99 for this transport).
          • Location:${RECOST_LOCAL_DIR ?? path.join(os.homedir(), ".recost", "local-telemetry")}/${projectId}.jsonl.
          • Permissions:0o600 on POSIX; document the Windows ACL limitation.
          • Failure modes: disk-full / EACCES drops the oldest queued frame, fires onError once per overflow episode. Never throws.
          • Lifecycle: flush + close stream on dispose().
          Open for the implementer
          • Rotation (per-day? per-size? both?) and retention.
          • Multi-process concurrency on the same projectId (POSIX O_APPEND atomicity vs Windows).
          • Whether the existing WS transport is eventually removed (separate issue).
          Verification
          • init({ projectId: "proj_x" }) (no localTransport set → uses new default file) + 3 fetch() calls writes 3 NDJSON lines with protocolVersion: "1.0".
          • init({ projectId: "proj_x", localTransport: "ws" }) still attempts the existing WS path.
          • dispose() flushes within 1s.
          • File mode 0o600 on POSIX.
          Out of scope
          • Reading the files (no consumer exists — extension explicitly opted out per recost-dev/extension#91).
          • Removing the existing WebSocket transport.
          • Encryption / signing of on-disk frames.
          Related
          • recost-dev/extension#91, recost-dev/extension#99
          • Python mirror: cross-referenced in a follow-up comment.
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            P1Should fix before next releaseenhancementNew feature or request
            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
              Add JSON-file local-mode transport (alternative to WebSocket) #37
              Closed
              #42
              Closed
              Add JSON-file local-mode transport (alternative to WebSocket)#37
              #42
              Labels
              P1Should fix before next releaseenhancementNew feature or request
              Description
              @AndresL230
              AndresL230
              opened on May 15, 2026
              Severity: Medium
              Affected repos:middleware-node
              Component boundary: middleware (local mode) → on-disk file
              Motivation
              Transport in src/core/transport.ts defaults to local mode when apiKey is missing and opens ws://127.0.0.1:9847. The VS Code extension does not host that server and has decided not to — see recost-dev/extension#91. Every default-configured SDK in local mode reconnects forever to nothing.
              A file-based transport gives users a working "no cloud account" path without a localhost listener: the SDK writes WindowSummary frames to disk; tooling can read them later.
              Proposal
              Add a local-file transport mode alongside the existing WS mode.
              • Config:RecostConfig.localTransport: "ws" | "file". Default: file. The WS target does not exist (recost-dev/extension#91), so the new default writes telemetry to disk instead of silently dropping it. ws remains as an opt-in. Behavior change for anyone currently using local mode by accident, but their telemetry was going nowhere — so this is strictly an improvement.
              • Wire format: append-only NDJSON. Each line is exactly one JSON.stringify(WindowSummary). Every frame carries a top-level protocolVersion: "1.0" (covers recost-dev/extension#99 for this transport).
              • Location:${RECOST_LOCAL_DIR ?? path.join(os.homedir(), ".recost", "local-telemetry")}/${projectId}.jsonl.
              • Permissions:0o600 on POSIX; document the Windows ACL limitation.
              • Failure modes: disk-full / EACCES drops the oldest queued frame, fires onError once per overflow episode. Never throws.
              • Lifecycle: flush + close stream on dispose().
              Open for the implementer
              • Rotation (per-day? per-size? both?) and retention.
              • Multi-process concurrency on the same projectId (POSIX O_APPEND atomicity vs Windows).
              • Whether the existing WS transport is eventually removed (separate issue).
              Verification
              • init({ projectId: "proj_x" }) (no localTransport set → uses new default file) + 3 fetch() calls writes 3 NDJSON lines with protocolVersion: "1.0".
              • init({ projectId: "proj_x", localTransport: "ws" }) still attempts the existing WS path.
              • dispose() flushes within 1s.
              • File mode 0o600 on POSIX.
              Out of scope
              • Reading the files (no consumer exists — extension explicitly opted out per recost-dev/extension#91).
              • Removing the existing WebSocket transport.
              • Encryption / signing of on-disk frames.
              Related
              • recost-dev/extension#91, recost-dev/extension#99
              • Python mirror: cross-referenced in a follow-up comment.
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                P1Should fix before next releaseenhancementNew feature or request
                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
                  Add JSON-file local-mode transport (alternative to WebSocket) #37
                  Closed
                  #42
                  Closed
                  Add JSON-file local-mode transport (alternative to WebSocket)#37
                  #42
                  Labels
                  P1Should fix before next releaseenhancementNew feature or request
                  Description
                  @AndresL230
                  AndresL230
                  opened on May 15, 2026
                  Severity: Medium
                  Affected repos:middleware-node
                  Component boundary: middleware (local mode) → on-disk file
                  Motivation
                  Transport in src/core/transport.ts defaults to local mode when apiKey is missing and opens ws://127.0.0.1:9847. The VS Code extension does not host that server and has decided not to — see recost-dev/extension#91. Every default-configured SDK in local mode reconnects forever to nothing.
                  A file-based transport gives users a working "no cloud account" path without a localhost listener: the SDK writes WindowSummary frames to disk; tooling can read them later.
                  Proposal
                  Add a local-file transport mode alongside the existing WS mode.
                  • Config:RecostConfig.localTransport: "ws" | "file". Default: file. The WS target does not exist (recost-dev/extension#91), so the new default writes telemetry to disk instead of silently dropping it. ws remains as an opt-in. Behavior change for anyone currently using local mode by accident, but their telemetry was going nowhere — so this is strictly an improvement.
                  • Wire format: append-only NDJSON. Each line is exactly one JSON.stringify(WindowSummary). Every frame carries a top-level protocolVersion: "1.0" (covers recost-dev/extension#99 for this transport).
                  • Location:${RECOST_LOCAL_DIR ?? path.join(os.homedir(), ".recost", "local-telemetry")}/${projectId}.jsonl.
                  • Permissions:0o600 on POSIX; document the Windows ACL limitation.
                  • Failure modes: disk-full / EACCES drops the oldest queued frame, fires onError once per overflow episode. Never throws.
                  • Lifecycle: flush + close stream on dispose().
                  Open for the implementer
                  • Rotation (per-day? per-size? both?) and retention.
                  • Multi-process concurrency on the same projectId (POSIX O_APPEND atomicity vs Windows).
                  • Whether the existing WS transport is eventually removed (separate issue).
                  Verification
                  • init({ projectId: "proj_x" }) (no localTransport set → uses new default file) + 3 fetch() calls writes 3 NDJSON lines with protocolVersion: "1.0".
                  • init({ projectId: "proj_x", localTransport: "ws" }) still attempts the existing WS path.
                  • dispose() flushes within 1s.
                  • File mode 0o600 on POSIX.
                  Out of scope
                  • Reading the files (no consumer exists — extension explicitly opted out per recost-dev/extension#91).
                  • Removing the existing WebSocket transport.
                  • Encryption / signing of on-disk frames.
                  Related
                  • recost-dev/extension#91, recost-dev/extension#99
                  • Python mirror: cross-referenced in a follow-up comment.
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    P1Should fix before next releaseenhancementNew feature or request
                    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
                      Add JSON-file local-mode transport (alternative to WebSocket) #37
                      Closed
                      #42
                      Closed
                      Add JSON-file local-mode transport (alternative to WebSocket)#37
                      #42
                      Labels
                      P1Should fix before next releaseenhancementNew feature or request
                      Description
                      @AndresL230
                      AndresL230
                      opened on May 15, 2026
                      Severity: Medium
                      Affected repos:middleware-node
                      Component boundary: middleware (local mode) → on-disk file
                      Motivation
                      Transport in src/core/transport.ts defaults to local mode when apiKey is missing and opens ws://127.0.0.1:9847. The VS Code extension does not host that server and has decided not to — see recost-dev/extension#91. Every default-configured SDK in local mode reconnects forever to nothing.
                      A file-based transport gives users a working "no cloud account" path without a localhost listener: the SDK writes WindowSummary frames to disk; tooling can read them later.
                      Proposal
                      Add a local-file transport mode alongside the existing WS mode.
                      • Config:RecostConfig.localTransport: "ws" | "file". Default: file. The WS target does not exist (recost-dev/extension#91), so the new default writes telemetry to disk instead of silently dropping it. ws remains as an opt-in. Behavior change for anyone currently using local mode by accident, but their telemetry was going nowhere — so this is strictly an improvement.
                      • Wire format: append-only NDJSON. Each line is exactly one JSON.stringify(WindowSummary). Every frame carries a top-level protocolVersion: "1.0" (covers recost-dev/extension#99 for this transport).
                      • Location:${RECOST_LOCAL_DIR ?? path.join(os.homedir(), ".recost", "local-telemetry")}/${projectId}.jsonl.
                      • Permissions:0o600 on POSIX; document the Windows ACL limitation.
                      • Failure modes: disk-full / EACCES drops the oldest queued frame, fires onError once per overflow episode. Never throws.
                      • Lifecycle: flush + close stream on dispose().
                      Open for the implementer
                      • Rotation (per-day? per-size? both?) and retention.
                      • Multi-process concurrency on the same projectId (POSIX O_APPEND atomicity vs Windows).
                      • Whether the existing WS transport is eventually removed (separate issue).
                      Verification
                      • init({ projectId: "proj_x" }) (no localTransport set → uses new default file) + 3 fetch() calls writes 3 NDJSON lines with protocolVersion: "1.0".
                      • init({ projectId: "proj_x", localTransport: "ws" }) still attempts the existing WS path.
                      • dispose() flushes within 1s.
                      • File mode 0o600 on POSIX.
                      Out of scope
                      • Reading the files (no consumer exists — extension explicitly opted out per recost-dev/extension#91).
                      • Removing the existing WebSocket transport.
                      • Encryption / signing of on-disk frames.
                      Related
                      • recost-dev/extension#91, recost-dev/extension#99
                      • Python mirror: cross-referenced in a follow-up comment.
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        P1Should fix before next releaseenhancementNew feature or request
                        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
                          Add JSON-file local-mode transport (alternative to WebSocket) #37
                          Closed
                          #42
                          Closed
                          Add JSON-file local-mode transport (alternative to WebSocket)#37
                          #42
                          Labels
                          P1Should fix before next releaseenhancementNew feature or request
                          Description
                          @AndresL230
                          AndresL230
                          opened on May 15, 2026
                          Severity: Medium
                          Affected repos:middleware-node
                          Component boundary: middleware (local mode) → on-disk file
                          Motivation
                          Transport in src/core/transport.ts defaults to local mode when apiKey is missing and opens ws://127.0.0.1:9847. The VS Code extension does not host that server and has decided not to — see recost-dev/extension#91. Every default-configured SDK in local mode reconnects forever to nothing.
                          A file-based transport gives users a working "no cloud account" path without a localhost listener: the SDK writes WindowSummary frames to disk; tooling can read them later.
                          Proposal
                          Add a local-file transport mode alongside the existing WS mode.
                          • Config:RecostConfig.localTransport: "ws" | "file". Default: file. The WS target does not exist (recost-dev/extension#91), so the new default writes telemetry to disk instead of silently dropping it. ws remains as an opt-in. Behavior change for anyone currently using local mode by accident, but their telemetry was going nowhere — so this is strictly an improvement.
                          • Wire format: append-only NDJSON. Each line is exactly one JSON.stringify(WindowSummary). Every frame carries a top-level protocolVersion: "1.0" (covers recost-dev/extension#99 for this transport).
                          • Location:${RECOST_LOCAL_DIR ?? path.join(os.homedir(), ".recost", "local-telemetry")}/${projectId}.jsonl.
                          • Permissions:0o600 on POSIX; document the Windows ACL limitation.
                          • Failure modes: disk-full / EACCES drops the oldest queued frame, fires onError once per overflow episode. Never throws.
                          • Lifecycle: flush + close stream on dispose().
                          Open for the implementer
                          • Rotation (per-day? per-size? both?) and retention.
                          • Multi-process concurrency on the same projectId (POSIX O_APPEND atomicity vs Windows).
                          • Whether the existing WS transport is eventually removed (separate issue).
                          Verification
                          • init({ projectId: "proj_x" }) (no localTransport set → uses new default file) + 3 fetch() calls writes 3 NDJSON lines with protocolVersion: "1.0".
                          • init({ projectId: "proj_x", localTransport: "ws" }) still attempts the existing WS path.
                          • dispose() flushes within 1s.
                          • File mode 0o600 on POSIX.
                          Out of scope
                          • Reading the files (no consumer exists — extension explicitly opted out per recost-dev/extension#91).
                          • Removing the existing WebSocket transport.
                          • Encryption / signing of on-disk frames.
                          Related
                          • recost-dev/extension#91, recost-dev/extension#99
                          • Python mirror: cross-referenced in a follow-up comment.
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                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            P1Should fix before next releaseenhancementNew feature or request
                            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
                              Add JSON-file local-mode transport (alternative to WebSocket) #37
                              Closed
                              #42
                              Closed
                              Add JSON-file local-mode transport (alternative to WebSocket)#37
                              #42
                              Labels
                              P1Should fix before next releaseenhancementNew feature or request
                              Description
                              @AndresL230
                              AndresL230
                              opened on May 15, 2026
                              Severity: Medium
                              Affected repos:middleware-node
                              Component boundary: middleware (local mode) → on-disk file
                              Motivation
                              Transport in src/core/transport.ts defaults to local mode when apiKey is missing and opens ws://127.0.0.1:9847. The VS Code extension does not host that server and has decided not to — see recost-dev/extension#91. Every default-configured SDK in local mode reconnects forever to nothing.
                              A file-based transport gives users a working "no cloud account" path without a localhost listener: the SDK writes WindowSummary frames to disk; tooling can read them later.
                              Proposal
                              Add a local-file transport mode alongside the existing WS mode.
                              • Config:RecostConfig.localTransport: "ws" | "file". Default: file. The WS target does not exist (recost-dev/extension#91), so the new default writes telemetry to disk instead of silently dropping it. ws remains as an opt-in. Behavior change for anyone currently using local mode by accident, but their telemetry was going nowhere — so this is strictly an improvement.
                              • Wire format: append-only NDJSON. Each line is exactly one JSON.stringify(WindowSummary). Every frame carries a top-level protocolVersion: "1.0" (covers recost-dev/extension#99 for this transport).
                              • Location:${RECOST_LOCAL_DIR ?? path.join(os.homedir(), ".recost", "local-telemetry")}/${projectId}.jsonl.
                              • Permissions:0o600 on POSIX; document the Windows ACL limitation.
                              • Failure modes: disk-full / EACCES drops the oldest queued frame, fires onError once per overflow episode. Never throws.
                              • Lifecycle: flush + close stream on dispose().
                              Open for the implementer
                              • Rotation (per-day? per-size? both?) and retention.
                              • Multi-process concurrency on the same projectId (POSIX O_APPEND atomicity vs Windows).
                              • Whether the existing WS transport is eventually removed (separate issue).
                              Verification
                              • init({ projectId: "proj_x" }) (no localTransport set → uses new default file) + 3 fetch() calls writes 3 NDJSON lines with protocolVersion: "1.0".
                              • init({ projectId: "proj_x", localTransport: "ws" }) still attempts the existing WS path.
                              • dispose() flushes within 1s.
                              • File mode 0o600 on POSIX.
                              Out of scope
                              • Reading the files (no consumer exists — extension explicitly opted out per recost-dev/extension#91).
                              • Removing the existing WebSocket transport.
                              • Encryption / signing of on-disk frames.
                              Related
                              • recost-dev/extension#91, recost-dev/extension#99
                              • Python mirror: cross-referenced in a follow-up comment.
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                P1Should fix before next releaseenhancementNew feature or request
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions