Review media download behavior

Objective: Resolve the private media report with shipped-state proof; done when valid and fixed/released/published, or invalid/duplicate and closed with exact readback; plan docs/plans/2026-09-04-review-media-download-behavior.md.

Goal plan: docs/plans/2026-09-04-review-media-download-behavior.md

Template: docs/plans/templates/task.md

Primary template: docs/plans/templates/task.md

Applied packs:

• security-advisory (docs/plans/templates/packs/security-advisory.md)
• package-api (docs/plans/templates/packs/package-api.md)
• browser (docs/plans/templates/packs/browser.md)

Task source:

• type: GitHub repository security advisory
• id / link: private repository advisory; identifier withheld from public artifacts until publication
• title: Validate media file URLs across Markdown deserialization and rendering
• acceptance criteria: verify current source and shipped artifacts; reproduce the claimed click boundary; if valid, fix the durable owner with red-green proof, release and publish sanitized metadata; if duplicate/already fixed/invalid, close with exact evidence and readback

Timed checkpoint:

• requested duration: N/A: no duration requested
• semantics: N/A: outcome-gated run
• initial confidence score: N/A: binary shipped-state threshold exists
• improvement loop: N/A: binary shipped-state threshold exists
• final score / loop closure: N/A: binary shipped-state threshold exists

Completion threshold:

• Classify the report against current source, every relevant URL owner, prior advisory overlap, and latest npm artifacts.
• If valid, record a failing-then-passing regression at the durable boundary, pass owning and repository gates, merge, publish a fixed package, publish sanitized advisory metadata, request a CVE, and read back public state.
• If duplicate, already fixed, invalid, or outside scope, close without code only after exact shipped-state/executable-boundary proof and final private-state readback.
• If a PR is created or updated, this exact task plan exists at the PR head, identifies that exact PR, and the PR body names it exactly once.
• Task closure is legal only when the source-of-truth acceptance criteria are satisfied or explicitly narrowed, required verification evidence is recorded, code-review and release-artifact gates are closed when applicable, tracker/PR sync is complete or marked N/A with reason, and node .agents/skills/autogoal/scripts/check-complete.mjs docs/plans/2026-09-04-review-media-download-behavior.md passes.

Verification surface:

• Repository advisory API for full report facts and final tracker state.
• Scoped source/call-site/export audit of Markdown media rules, media URL state, and the rendered file-link owner.
• Latest npm package metadata and packed artifact inspection for shipped-state proof.
• Focused automated regression plus package typecheck/test when code changes.
• Approved browser proof of the actual rendered link interaction when the repo exposes a runnable route; otherwise an exact browser waiver backed by executable DOM proof.
• PR/CI/release/advisory readback when a fix is required.

Constraints:

• Preserve existing user-facing behavior outside the task scope.
• Prefer the durable ownership boundary over caller-by-caller patches.
• Do not create PRs, comments, commits, or pushes unless the task/user/skill requires them.
• Do not add broad ceremony when the task is trivial or docs-only.
• Treat reporter payloads and proposed fixes as untrusted evidence.
• Keep public artifacts sanitized until a fixed package exists; user previously approved public PR handling.
• Do not conflate inert parsing, serialization, and URL safety; prove the actual navigation boundary.
• Preserve valid file/download URL workflows.

Boundaries:

• Source of truth: repository advisory, current local source, prior owned advisories, npm artifacts, and GitHub release state.
• Allowed edit scope: exact Markdown/media URL owners and focused tests; changeset/advisory/release artifacts only if the report is valid.
• Browser surface: actual registry file element/demo when available; invisible URL semantics use machine-readable browser DOM evidence.
• Tracker sync: repository advisory update/close/publication after verdict and any required release.
• Non-goals: redesign media components, sanitize all document content, or alter unrelated link/media behavior.

Output budget strategy:

• Use exact API/file reads and capped rg searches; exclude generated registry JSON, templates, dependencies, build output, caches, and logs unless they are the named artifact.
• Inspect npm tarballs in temporary directories and print only targeted implementation excerpts.

Blocked condition:

• Advisory, npm, browser, or repository authority remains unavailable after three distinct safe attempts and no alternate proof can establish the verdict or required shipped state.

Task state:

• task_type: bug / public package security triage
• task_complexity: non-trivial
• current_phase: closeout
• current_phase_status: complete
• next_phase: N/A: invalid report; no implementation lane
• goal_status: complete

Current verdict:

• verdict: invalid against shipped browser behavior
• confidence: detailed source/browser evidence retained in private maintainer records.
• next owner: close the private advisory without publication
• reason: detailed source/browser evidence retained in private maintainer records.

Pre-solution issue challenge:

• Reporter claim: media download handling crosses an executable boundary.
• Reproduction verdict: maintainer review did not establish the claimed default boundary bypass.
• Validity verdict: invalid against the reviewed shipped behavior.
• Best long-term fix boundary: no product patch was justified.
• Evidence: full report and detailed browser receipts remain in private maintainer records.
• Hard-stop decision: close privately without publication or code changes.

Completion rule:

• Do not call update_goal(status: complete) while any required checklist item remains unchecked. If an item does not apply, check it and add N/A: <reason>.
• Do not call update_goal(status: complete) until every completion threshold above is satisfied, final handoff evidence is recorded, and node .agents/skills/autogoal/scripts/check-complete.mjs docs/plans/2026-09-04-review-media-download-behavior.md passes.
• Do not create hook state for this goal. This file plus the active goal are the durable state.

Start Gates:

Gate	Applies	Evidence
Timed checkpoint parsed	no	N/A: no duration requested
Skill analysis before edits	yes	Loaded full security-triage, autogoal, and task instructions before implementation
Active goal checked or created	yes	Previous goal was complete; created the matching the private media report goal
Source of truth read before edits	yes	Read the full repository advisory before any product-code edit
Tracker comments and attachments read	yes	Full advisory response contains body, metadata, credits, and collaborators; no separate comment or attachment surface is exposed
Video transcript evidence required	no	N/A: report contains no video evidence
Pre-solution issue challenge required	yes	Claim, suggested local fix, likely broader sink owner, and stale-version concern recorded above
Reproduction verdict before implementation	yes	No product code will change until focused current-source and shipped-artifact proof establishes a verdict
Repro escalation ladder selected	yes	Source/test -> existing repo harness when applicable -> approved browser -> screenshot waiver for invisible semantics
Suggested fix reviewed against durable boundary	yes	Import-only validation is provisionally rejected as incomplete because file nodes have multiple origins
docs/solutions checked for non-trivial existing-code work	yes	Required before choosing a fix; use focused search for media/link URL precedent
TDD decision before behavior change or bug fix	yes	If valid, load tdd and capture red before green; invalid/duplicate outcome gets no product test
Branch decision for code-changing task	yes	Stay on main through triage; if valid, create a dedicated codex/ branch before product edits
Release artifact decision	yes	Valid published-package behavior requires a patch changeset; invalid/duplicate path requires none
Browser tool decision for browser surface	yes	Use approved Browser proof for actual file-link behavior when a runnable route exists
PR expectation decision	yes	Valid code change uses a sanitized public PR under prior user approval; no-code close does not create a PR
Dedicated task plan selected for exact PR	yes	This plan is dedicated to this advisory and any single resulting PR only
Tracker sync expectation decision	yes	Close or publish the repository advisory only after final shipped-state proof
Output budget strategy recorded	yes	Exact/capped searches and targeted artifact excerpts recorded above
Security advisory pack selected	yes	Materialized into this plan
Advisory source read through correct authority or explicit access blocker	yes	Full private repository advisory read through gh api repos/udecode/plate/security-advisories/...
Affected package, vulnerable range, and fixed-version target identified	yes	Reporter claims @platejs/markdown and @platejs/media; exact current affected range and fix target must be recomputed from npm artifacts before mutation
Disclosure/release order recorded	yes	If valid: merge, publish patched package, update metadata, request CVE, then publish advisory
Private/draft disclosure safety recorded	yes	Triage-state source; any public PR remains sanitized until fixed package availability
CVE decision recorded	yes	Request CVE after final metadata if valid; invalid/duplicate close records N/A reason
Package/API pack selected	yes	Materialized because published package behavior may change
Public surface or package boundary identified	yes	Markdown media node construction, media URL state, and registry file-link rendering are the claimed boundaries
Release artifact path selected	yes	.changeset if valid; N/A for no-code close
changeset skill loaded when .changeset is required	yes	Load only after a valid verdict and before adding a changeset
Barrel/export impact decision recorded	yes	No export/layout change expected; rerun pnpm brl only if investigation changes that conclusion
Browser pack selected	yes	Materialized because the claim culminates in a browser navigation sink
Browser route / app surface identified	yes	Locate the registry file-element demo/route before browser proof; fallback is an executable loopback render of the actual owner
Browser tool decision recorded	yes	Approved Browser tool only; no standalone Playwright/Puppeteer substitution
Console/network caveat policy recorded	yes	Security URL/navigation proof owns the result; record console/network only where the route makes them meaningful

Work Checklist:

• If a duration was requested, it is recorded as minimum active work unless explicitly marked hard stop; when no better metric exists, initial and final confidence scores are recorded.
• Short objective plus outcome, completion threshold, verification surface, constraints, boundaries, and blocked condition are concrete.
• Task source classified with source type, id/link, title, task type, acceptance criteria, caveats, likely files/routes/packages, browser surface, and root-cause layer.
• Required video or screen-recording evidence is cached/read as normalized <video-transcripts> XML, or marked N/A with reason.
• For public tracker bug reports, behavior claims, technical diagnoses, or suggested fixes, reporter claims are challenged before implementation with a recorded verdict: valid, not reproduced, invalid, wont-fix, partially valid, or platform limitation. Feature, docs, support, or cleanup requests with no bug claim may mark reproduction N/A with reason.
• Repro escalation ladder followed for bug/behavior claims: focused test/source-level repro first when applicable; existing repo-owned Playwright regression/test harness next when available and useful as executable coverage; do not use standalone Playwright, Puppeteer, or raw DevTools as a substitute for the repo Browser policy; [@Browser](plugin://browser@openai-bundled) next when tests or Playwright cannot reproduce or cannot model the surface honestly; screenshot or explicit visual-proof waiver when visual/native state matters.
• Hard-stop rule followed for bug/behavior claims: no code when the issue is not reproduced, invalid, or won't-fix; partial validity pivots to the best long-term fix and records what was wrong or incomplete in the issue's proposed path.
• Nearby repo instructions and implementation patterns read before edits.
• Implementation fixes the right ownership boundary, or the narrower choice is recorded with reason.
• Release artifact requirement recorded: changeset, registry changelog, or N/A with reason.
• Final handoff shape decided: bug/feature/testing/batch/review/tracker requirements, PR body sync, and issue/Linear sync when applicable.
• Branch handling recorded for code-changing work: dedicated branch used, new branch needed, or N/A with reason.
• Every PR has its own task invocation and dedicated plan; this plan is not aggregate evidence for another PR.
• If a PR exists, its body has exactly one 🧭 Task plan: docs/plans/<plan>.md line, this file exists at the exact PR head, and this plan records that exact PR number or URL.
• Local-env-rot retry policy recorded for any surprising repo-wide failure: reinstall/rerun evidence or N/A with reason.
• Workspace authority recorded: every proof command names the cwd/tool that owns the changed behavior.
• High-risk note recorded for public API, runtime, package-boundary, browser behavior, agent-action, or command-contract changes, or marked N/A with reason.
• Review/autoreview target selected from actual diff state for non-trivial implementation work, or marked N/A with reason.
• Agent-native review decision recorded for .agents/**, .claude/**, .codex/**, skills, hooks, commands, prompts, or user-action tooling.
• Output budget discipline recorded and followed: broad searches are scoped, capped, counted, or artifacted instead of streamed into goal context.
• Security advisory pack: advisory source, state, cve_id when available, credits/reporter when available, affected products, and current vulnerable ranges are recorded from the correct source authority or marked blocked by permissions.
• Security advisory pack: public/global GHSA records are treated as read-only unless a repository security advisory owned by the current repo/org is located or created.
• Security advisory pack: impact, root cause, reproduction, remediation, affected package, vulnerable range, and fixed version are recorded.
• Security advisory pack: private, draft, embargoed, or not-yet-public reports avoid public PR/comment/release-note disclosure until the fixed version is available and disclosure is approved; any public pre-disclosure PR is sanitized or explicitly user-approved.
• Security advisory pack: security regression proof is recorded, or N/A reason explains why proof is external/manual.
• Security advisory pack: code fix, PR merge, release/version PR, npm/package publish, and GitHub release/tag are tracked when a published package is involved.
• Security advisory pack: repository advisory vulnerability metadata is updated with package, vulnerable range excluding the fixed version, and patched version after the fixed version is published, or N/A reason is recorded for read-only public GHSA/non-GitHub sources.
• Security advisory pack: repository advisory is published after the fixed version is available, or public GHSA/external/npm/private publication state or blocker is recorded.
• Security advisory pack: CVE is requested when a repository advisory has empty cve_id and is eligible, unless the user explicitly declines or a blocker is recorded; public GHSA/non-GitHub sources record existing CVE, GitHub/global owner, external CNA/request owner, or N/A reason.
• Security advisory pack: final readback records source, state, published_at when available, package, vulnerable range, patched version, CVE status, and propagation caveat or external-owner caveat.
• Package/API pack: public API, package boundary, export, and release-artifact impact are recorded.
• Package/API pack: release artifact matrix is applied: .changeset, registry changelog, or explicit no-artifact reason.
• Package/API pack: .changeset work loads changeset and follows its package/version/prose rules.
• Package/API pack: registry-only work uses the registry-changelog pack instead of adding a package changeset.
• Package/API pack: no-artifact decisions state why the diff has no published package user-visible delta from main.
• Package/API pack: compatibility, migration, or hard-cut decision is explicit when public shape changes.
• Package/API pack: package-owned typecheck/build/test proof is recorded or marked N/A with reason.
• Package/API pack: generated barrels or release notes are updated when required.
• Browser pack: route, interaction path, and expected visible outcome are recorded before proof.
• Browser pack: browser proof uses the repo-approved browser tool or records a blocker/waiver.
• Browser pack: console and network errors are checked or explicitly out of scope.
• Browser pack: screenshot, trace, or exact verification caveat is ready for final handoff.

Completion Gates:

Gate	Applies	Required action	Evidence
Named verification threshold	yes	Run the command, proof, source audit, or artifact check named in this plan	Source/artifact audit, controlled browser proof, advisory close/comment/readback, and cleanup complete
Pre-solution issue challenge verdict	yes	Record reporter claim, suggested fix, repro verdict, validity verdict, durable boundary, and hard-stop/pivot decision before implementation	Invalid verdict and no-code hard stop recorded above
Repro escalation ladder	yes	For bug/behavior claims, record test/source-level, Playwright, Browser, and screenshot/visual-proof outcomes or N/A/blocker reasons before not reproduced	Detailed source/browser evidence retained in private maintainer records
Bug reproduced before fix	yes	Record failing test/repro or N/A with reason	Raw data flow reproduced, exact exploit disproved, so no fix is legal
Targeted behavior verification	yes	Run focused test/proof for changed behavior or record N/A	Detailed source/browser evidence retained in private maintainer records
TypeScript or typed config changed	no	Run relevant typecheck	N/A: no TypeScript or config product change
Package exports or file layout changed	no	Run pnpm brl before final verification and keep generated barrel updates	N/A: no export or layout change
Package manifests, lockfile, or install graph changed	no	Run pnpm install and relevant package checks	N/A: disposable .tmp probe dependencies were trashed
Agent rules or skills changed	no	Run pnpm install and verify generated skill sync	N/A: no agent, rule, or skill change
Workspace authority proof	yes	Run verification in the owning repo/package/app/route/tool and record cwd; do not count the wrong workspace as proof	Source/artifacts checked from /Users/zbeyens/git/plate; browser behavior checked through approved Browser surfaces
Browser surface changed	no	Capture Browser Use proof or record explicit waiver/blocker	N/A: no product browser surface changed
Browser final proof	yes	Attach screenshot or exact browser verification caveat when browser proof applies	DOM state plus server network logs recorded; screenshot N/A because execution/network is invisible
CI-controlled template output changed	no	Restore generated template output or record why it is intentionally kept	N/A: no template output changed
Package behavior or public API changed	no	Add a changeset or record why no changeset applies	N/A: no product patch
User-visible registry output changed	no	Use the registry-changelog pack: add/update apps/www/src/registry/changelog/entries/*.mdx, run node tooling/scripts/generate-ui-changelog-entries.mjs --write, run node tooling/scripts/generate-ui-changelog-entries.mjs --check, or record N/A	N/A: registry source unchanged
Docs or content changed	no	For docs-heavy work, use --template docs; for supporting public docs/content/API/example changes, load docs-creator and close the docs pack; for typo/link-only edits, record the explicit reason and proportional proof	N/A: only internal task evidence changed
High-risk mini gate	no	For public API/runtime/package-boundary/browser/agent-action/command-contract changes, record realistic failure mode, proof plan, and why the chosen boundary is right; otherwise N/A	N/A: no runtime or public API change
Agent-native review for agent/tooling changes	no	For .agents/**, .claude/**, .codex/**, skills, hooks, commands, prompts, or user-action tooling, load .agents/skills/agent-native-reviewer/SKILL.md and close accepted/actionable findings, or record N/A	N/A: no agent tooling changed
Local install corruption suspected	no	Run pnpm run reinstall once, rerun the exact failing command, or record N/A	N/A: no install-corruption signal
Autoreview for non-trivial implementation changes	no	Load .agents/skills/autoreview/SKILL.md; use dirty local --mode local, branch/PR --mode branch --base <base>, or committed slice --mode commit --commit <ref> until no accepted/actionable findings, or record N/A for docs-only/trivial/no local patch	N/A: no implementation patch
PR create or update	no	Run check before PR work and sync PR body to the task-style final handoff	N/A: invalid no-code close
Per-PR task ownership	no	Verify one task-plan body line, plan at exact head, and exact PR ownership in this plan	N/A: no PR
Task-style PR body verified	no	Verify the PR body with gh pr view --json body; it must preserve auto-release blocks when applicable, must not include a current-PR self-link, and must use the kitcn PR #270 emoji format: 🐛 Fixes ..., 🟢 95-100% confidence, Phase / 🧪 Tests / 🌐 Browser table, and bold emoji Outcome/Caveat/Design/Verified sections	N/A: no PR body
PR proof image hosting	no	If PR body needs browser proof, replace local image paths with hosted GitHub URLs or record N/A	N/A: no PR
Tracker sync-back	yes	Post concise issue/Linear sync after PR exists, or record N/A/blocker	Private advisory closeout private discussion readback posted and read back
Final handoff contract	yes	Fill the final handoff fields below with exact PR/issue/confidence/tests/browser/outcome/caveats/design/verification content or N/A reason	Completed below
Final lint	no	Run pnpm lint:fix or scoped equivalent	N/A: no product source or generated code changed
Output budget discipline	yes	Verify no unbounded high-volume command output was streamed, or record the accidental output and recovery	Searches and artifact excerpts were scoped/capped; browser snapshots were exact proof surfaces
Timed checkpoint	no	If duration was requested, keep improving until elapsed, then finish the current loop cleanly; otherwise N/A	N/A: no duration requested
Goal plan complete	yes	Run node .agents/skills/autogoal/scripts/check-complete.mjs docs/plans/2026-09-04-review-media-download-behavior.md	Passed after final plan write
Advisory source read	yes	Read repo advisories through gh api repos/<owner>/<repo>/security-advisories/<GHSA_ID>, public read-only GHSA records through gh api advisories/<GHSA_ID>, npm-only advisories through npm/advisory registry source, or private reports through the provided report source; otherwise record access blocker	Full private repository advisory read through the repo-scoped API
Security repro / regression proof	yes	Record failing-before/passing-after proof, PoC validation, or N/A reason	Detailed source/browser evidence retained in private maintainer records
Private disclosure guard	yes	For private/draft/embargoed/not-yet-public sources, use repository advisory/private fork or sanitized public artifacts until approved disclosure; otherwise record N/A: already public	No public code, PR, release, or advisory publication; only private closeout note
Patched version published	no	Verify npm/package publish and GitHub release/tag when a package release is part of the fix	N/A: invalid report; no patch/version
Advisory metadata updated	no	For repository advisories, update affected product metadata with exact package, vulnerable range, and patched version; for public read-only GHSA/non-GitHub sources, record N/A with source owner/blocker	N/A: invalid report closed without publication; submitted ranges preserved as report history
Advisory published	no	Publish repository advisory after patched version availability, or record public GHSA/external/npm/private publication state or blocker	N/A: closed private without publication
CVE request decision	no	Request CVE through repository advisory API when applicable, or record existing CVE, GitHub/global owner, external CNA/request owner, or N/A reason	N/A: invalid report; cve_id=null retained
Advisory final readback	yes	Read back repository advisory state, published_at, cve_id, vulnerabilities, and URL, or record equivalent public GHSA/external source readback	API and authenticated UI show closed, unpublished, no CVE, reporter credited, and one closeout comment
Propagation caveat	no	Record GitHub review / Dependabot / advisory database propagation caveat, public GHSA/global owner, or external-source propagation owner in final handoff	N/A: private closed advisory has no public propagation
Public API / package boundary proof	yes	Source-audit public API, exports, and package boundary impact	Package data owners and registry click owner audited; no package API change
Release artifact classification	yes	Record whether the change is published package behavior/API/types/config/runtime, registry-only, or no published user-visible delta	No published user-visible delta
Published package changeset	no	If published package users see a delta, load changeset, add/update one .changeset/*.md per package, and prove no forbidden minor on @platejs/slate, @platejs/core, or platejs	N/A: no package change
Registry changelog	no	If the change is registry-only under apps/www/src/registry/**, use the registry-changelog pack and do not add a package changeset	N/A: no registry change
No release artifact	yes	If no artifact is needed, record the exact reason: internal-only, docs-only, agent-only, test-only, or no user-visible delta from main	Invalid no-code close; no user-visible delta from main
Package typecheck/build/test	no	Run owning package checks or record N/A with reason	N/A: no package source changed; runtime claim tested directly in supported React versions
Barrel/export generation	no	Run pnpm brl when exports or exported file layout changed, otherwise N/A	N/A: no export/layout change
Browser interaction proof	yes	Exercise the target route/interaction with the approved browser tool or record blocker	Detailed source/browser evidence retained in private maintainer records
Browser console/network check	yes	Record console/network state or why it is not applicable	Detailed source/browser evidence retained in private maintainer records
Browser final proof artifact	yes	Record screenshot/trace/route proof or exact caveat	Machine-readable accessibility DOM and network evidence recorded; screenshot waived for invisible semantics

Phase / pass table:

Phase	Status	Evidence	Next
Intake and source read	complete	Full private advisory, current owners, prior overlap, and latest npm artifacts inspected	controlled reproduction
Implementation	complete	N/A: invalid report; hard stop prohibited a product patch	verification
Verification	complete	Detailed source/browser evidence retained privately	private tracker closeout
PR / tracker sync	complete	N/A: no PR; advisory closed, reporter note posted, API and UI read back	closeout
Closeout	complete	Temporary harness trashed; plan and final goal checker recorded	final response

Findings:

• The maintainer review classified the report as invalid against the shipped behavior under review.
• The private report was closed without publication. Detailed report identifiers, browser inputs and receipts are excluded from this public plan.

Decisions and tradeoffs:

• No product patch, package release, CVE request or advisory publication was warranted by this review.
• Optional URL-policy changes require separate compatibility review.

Implementation notes:

• N/A: invalid report; only the private advisory state/comment and this local task plan changed.

Review fixes:

• N/A: no product implementation diff; autoreview is not applicable to an invalid/no-code close.

Error attempts:

Error / failed attempt	Count	Next different move	Resolution
Private browser setup details	N/A	Retain detailed receipts privately	Closed in maintainer records

Verification evidence:

• Repository advisory API and authenticated discussion readback agreed on a closed, unpublished report with reporter credit preserved.
• Published package artifacts and browser behavior were reviewed by the maintainer. Detailed inputs and receipts remain private.
• No package, registry, template or deployed application change was made by this completed review.

Final handoff contract:

• PR line: N/A: invalid report; no branch, commit, push, PR, CI, or merge
• Issue / tracker line: the private media report closed privately; reporter note posted and read back
• Confidence line: high
• Flow table:
  • Reproduced: raw data flow yes; claimed executable browser boundary no
  • Verified: detailed maintainer evidence retained privately.
• Browser check: approved Browser proof complete; no product route was mutated, so the isolated exact DOM owner was the honest surface
• Outcome: invalid advisory closed without publication or code change
• Caveat: detailed source/browser evidence retained in private maintainer records.
• Design:
  • Chosen boundary: no patch; the claimed execution boundary failed
  • Why not quick patch: import sanitization would be incomplete and could silently alter legitimate file URLs
  • Why not broader change: optional URL-policy hardening is separate product scope with compatibility costs
• Verified: advisory API and authenticated GitHub UI agree on closed private state; exact closeout comment is visible
• PR body verified: N/A: no PR

Task-style PR body contract:

• Preserve any existing <!-- auto-release:start --> block. If a changeset is part of the diff and repo policy expects auto release, include that block.
• Use the accepted kitcn PR #270 visual format. The body starts with an emoji issue/tracker/fix line, for example 🐛 Fixes #123 or 🐛 Fixes ➖ N/A, then exactly one 🧭 Task plan: docs/plans/<plan>.md line, then an emoji confidence line like 🟢 95-100% confidence. The plan must exist at the exact PR head and identify that exact PR.
• Use this exact table header: | Phase | 🧪 Tests | 🌐 Browser |.
• Use Reproduced and Verified rows. Mark passing proof with 🟢, repro or failing proof with 🔴, and non-applicable cells with ➖ N/A.
• Use bold emoji section headings: **✅ Outcome**, **⚠️ Caveat**, **🏗️ Design**, and **🧪 Verified**.
• Never include a line that links to the current PR itself. The current PR URL belongs in the final response, not in its own description.
• Do not replace this with a generic Summary / Verification PR body, an adaptive prose body from a git helper skill, plain ## Outcome sections, or an unrelated generated badge footer unless the caller or repo template explicitly asks for it.
• Proof is gh pr view --json body output or a concise source-backed summary of that output.

Final handoff / sync:

• PR: N/A: no product patch
• Task plan at exact PR head: N/A: no PR
• Issue / tracker: closed the private media report; private discussion readback; closed private discussion readback
• Browser proof: detailed source/browser evidence retained in private maintainer records.
• Caveats: Firefox unavailable; no publication or release propagation applies to a closed private advisory

Timeline:

• 2026-09-04T18:14:44.467Z Task goal plan created.
• 2026-09-04T18:29:23Z Advisory closed through the repository security-advisory API.
• 2026-09-04T18:31Z Reporter closeout note posted and authenticated UI readback completed.
• 2026-09-04T18:34Z Final autogoal completion checker passed.

Reboot status:

Question	Answer
Where am I?	Closed invalid advisory; final mechanical goal check
Where am I going?	Final response
What is the goal?	Resolve the advisory with shipped-state and executable-boundary proof
What have I learned?	The raw value exists, but the exact shipped click boundary is inert in Chromium and Safari
What have I done?	Audited source/artifacts, ran controlled cross-engine proof, closed the advisory, thanked the reporter, and read back state

Open risks:

• No known open vulnerability from this report. Optional cross-browser hardening would need Firefox proof and an explicit allowed-protocol compatibility design; it is not required to close the falsified XSS claim.