GitHub PR Image Upload
Handle explicit local-image evidence requests for an existing GitHub PR or an exact
tk-pr-open generic manifest handoff with evidence_required: true. Only the parent handoff is an
automatic trigger.
When route selection or pre-installation confirmation is needed, prefer the host's native structured question surface (Claude Code: AskUserQuestion; Codex: request_user_input; Hermes: clarify). If unavailable, ask for the same choice in plain chat and do not mutate before selection.
Scope
Handle one bounded upload: validate and stage local images, upload repository-scoped GitHub attachments, minimally update the PR body or selected comment, and verify source/render output. The default target is the PR body.
For tk-pr-open, validate the producer-neutral evidence fields and never branch on, whitelist, or require a producing
skill name. If required evidence is missing or invalid, mark the evidence handoff Blocked; do not revert an
already-created tk-pr-open PR.
Use references/gh-attach.md to classify and run the
extension route. Read references/cdp-fallback.md
only after CDP is selected or the extension route cannot use target write
capability. Invoke tk-wizard only for an exact human-only host setup,
authentication, permission, or restart step; preserve this skill's upload target and route
across the handoff. Use tk-browser-verify for browser-controlled runtime verification.
🔴 CHECKPOINT · 🛑 STOP · Upload mutation boundary
Before any upload or PR body/comment update, reverify the explicitly selected target, valid local evidence or producer handoff, authenticated route, and requested write scope; stop as Blocked or Unverifiable when those preconditions cannot be established.
Workflow
- Confirm
origin, the current PR, and the executing repository from regular local image file(s) or a valid producer evidence handoff. Read the existing PR body. - Reuse the existing
## 스크린샷heading. If absent, insert it before the AI footer or append it at the end. Preserve unrelated body content. For manifest artifacts, use the supplied criterion, role, exactdisplay_route, state/region, viewport, and comparison in the caption; never derive them from a filename, OCR, raw URL, or producer identity. Keepvisual-preservationbaseline and after visibly labeled as one pair. - Select and execute an eligible route using gh-attach, or read CDP fallback only after CDP is selected. Repository visibility is not a routing signal, and a route that may have created remote state cannot silently fall back to the other route.
- When the selected route needs a human-only host action, pass a bounded handoff to
tk-wizardand perform no upload until its completion signal. Agent-approved reviewed extension installation remains here. Resume the exact repository, target, image set, and route after the wizard completes. - Update only the requested body or comment through the GitHub API or equivalent.
Before
Pass, verify the source Markdown, rendered HTML/page evidence, every asset link, and the upload ref. - Remove only owned staging files on every exit path.
Execution Receipt · Single Evidence Record
Record every upload attempt in the single receipt below. It is not a separate lifecycle
output; it is the sole evidence record used for the ## GitHub image upload result and
approval/verification decisions. Use none or unavailable for absent values; never guess.
Repository: <owner>/<repo>
PR / Target: <pr-number> / body | existing comment <comment-id>
Source images: <absolute path list>
Route: gh-attach | CDP
Entry: <exact reviewed command | browser route>
Generated Markdown: <asset refs | none>
Remote ref: <refs/uploads/issues/<pr-number> | none | unknown>
Verification: <source body/comment | rendered HTML/page | unavailable>
Changed: <body/comment changed | unchanged | unknown>
Cleanup: <owned staging path removed | failed | not applicable>
Status: Pass | Fail | Pending | Blocked | Unverifiable
Evidence Manifest Handoff
When evidence_required: true, require all of the following:
verification_status: Pass, a non-empty criterion, evidence kind, comparison result, and limitations.- Every artifact has a role, non-empty image, absolute path, run-owned evidence directory, state/region, and viewport.
- Every image is marked
inspected: trueand has an exact origin-freedisplay_routeor an explicit safe omission limitation. Never reconstruct or mask a missing route. visual-preservationcontains both a baseline and after artifact from its verified pair.
Reject arbitrary screenshots, missing paths, non-Pass results, uninspected artifacts, incomplete preservation pairs,
and artifacts not tied to the current run. If required evidence is missing or invalid, return Blocked before upload.
Prohibitions
- Do not create or merge a PR, change reviewers, publish a release, or insert a comment unless the user explicitly selected that comment target.
- Do not bypass
tk-browser-verifyor use Orca or screen control as an automatic browser fallback. - Do not overwrite a pre-existing draft or click comment, close-with-comment, or any other submit button.
- Do not choose a route based on public/private visibility or claim success from only a placeholder, Markdown presence, fixed delay, or unrendered API response.
- Do not log or return a signed URL, JWT, or raw secret-bearing query string. This does not prohibit a verified-safe,
origin-free
display_route; preserve its pathname, query, and fragment exactly as supplied by the manifest.
Failure Handling
Return Pending while waiting for an absent-extension or unreviewed-upstream choice or a
human-only tk-wizard completion signal. Return Blocked for unknown provenance, a draft, or a rejected
installation without a selected CDP route. Return Unverifiable if neither route
has authentication or render evidence, and Fail for upload, remote ref
verification, or cleanup errors. State whether the selected body/comment changed
and whether an upload ref may remain.
For tk-pr-open, preserve the separate PR operation result and return the
evidence state as uploaded or blocked. While required evidence remains
blocked, the parent cannot claim full completion.
Result
Start the terminal response with ## GitHub image upload. Include ## Uploaded,
## Verification, and ## Cleanup when applicable. End the result-owning section with exactly
one Status: Pass|Fail|Pending|Blocked|Unverifiable line. Expose asset URLs only when safe and
redact signed parameters.