fix(cursor): prepare active tool screenshot batches

devlog/_plan/260905_external_image_roundtrip/000_plan.md

@@ -9,12 +9,13 @@
   release, image synthesis, or unrelated adapter refactor.
 - Verifier: standalone converter/parser/adapter body inspection, TypeScript, exact-head
   GitHub CI. ALL local test suites are forbidden by the user, including focused suites.
-- Stop: reviewed two-layer stack merged bottom-up to dev with green CI and ancestry.
+- Stop: reviewed image-repair stack merged bottom-up to dev with green CI and ancestry.
 - Memory: this unit and the session-bound goalplan/ledger.
 - Outcomes: DONE only with proof; external dependencies may be BLOCKED/NEEDS_HUMAN;
   unsafe expansion is UNSAFE. No implementation-success claim from docs-only work.
 - Scope: this managed checkout, read-only Aside official docs, GitHub stack/CI/admin
-  merge. Maximum four concurrent agents; reassess after 90 minutes; no token cap set.
+  merge. The user's follow-up permits unlimited useful parallel agents (subject to
+  actual tool capacity); reassess after 90 minutes; no token cap set.
 - Escalation: reclaim a lane after two distinct failed agents; any delegated writes
   must be planned with disjoint paths before B. No production credentials in artifacts.
 
@@ -45,8 +46,13 @@ serialization. Do not add a generic image helper or patch correct Responses code
 
 1. wp0: docs-only roadmap and independent audit (this cycle).
 2. wp1 / 010: preserve Chat image detail and structured tool output; lower PR to dev.
-3. wp2 / 020: cross-protocol wire regressions and public contract; child PR to lower
-   branch, then CI/review/admin-merge bottom-up, retarget child and verify again.
+3. wp2 / 020: cross-protocol wire regressions and public contract; child PR to lower.
+4. User-expanded wp3 / 030: file references and explicit unsupported computer-output
+   boundary. 003 records full format coverage and rejected hypotheses.
+5. wp4 / 040: orphan tool image carriers on Anthropic and Command Code.
+6. wp5 / 050: active external Cursor tool screenshot attachments.
+7. wp6 / 060: all-format finding disposition, CI/review/admin-merge bottom-up, retarget
+   children and verify exact heads/ancestry. Original completion criteria are unchanged.
 
 Existing placement is reused: src/chat/, tests/responses/, public reference/proxy-formats,
 structure/04_transports-and-sidecars.md. No new package, runtime module, or config.
@@ -55,6 +61,12 @@ converter and protects the integrated contract independently of unit-level asser
 
 ## Continuity
 
+wp1 outcome: commit `1f1daa368` implements 010 with ten converter regression cases;
+draft PR #3586 targets dev. Independent patch reviewer inspected both changed files
+and returned PASS. Standalone request JSON changed from image/detail missing (exit 1)
+to both retained (exit 0); node TypeScript and privacy scan passed. Suites are CI-only,
+not claimed green yet. wp2 inherits this verified converter and adds wire/HTTP evidence.
+
 Roadmap audit: independent gpt-6-astra high reviewer returned GO-WITH-FIXES,
 two medium findings. Both folded: exact no-suite typecheck/push commands and actual
 Claude converter export. Direct node tsc exits 0. Standalone reproduction at

devlog/_plan/260905_external_image_roundtrip/003_all_format_audit.md

@@ -0,0 +1,47 @@
+# All-image-format audit, 2026-09-05
+
+The user expanded the review from the reported OpenAI paths to every image format.
+Two independent gpt-6-astra high reviewers inspected ingress and outgoing format
+families. These are source-verified gaps, not claims that the first patch introduced
+regressions. No unsupported provider-specific file resolver is being invented.
+
+| Surface | Supported transport / current boundary | Disposition |
+| --- | --- | --- |
+| Chat user image_url object/data/HTTPS/detail | Existing URLs preserved; detail fixed in 010 | Covered by lower and wire PRs |
+| Chat tool image arrays/string URLs | OpenCodex extension, not standard upstream tool-role support | Fixed in 010; native Chat keeps its contract |
+| Responses message input_image | URL/data; file_id native or text marker translated | Existing supported behavior |
+| Responses function/custom output file_id | Raw native retains reference; translated parser drops it | 030: use existing file marker convention |
+| Responses computer_screenshot output | Raw native retains item; translated parser ignores screenshot | 030: explicit translated400, native unchanged |
+| Claude user/tool base64 and URL | Dedicated mapper and nested tool outputs | Covered by wire matrix |
+| Claude source:file | Native reference valid; translated mapper drops it | 030: explicit translated error, no cross-provider resolution |
+| Responses/Azure | Native raw inputs and repairable orphan images retained | No additional loss found |
+| Chat/Mimo | User-image carrier after pending tool batch | No additional loss found |
+| Anthropic | Paired image result works; orphan baseline JSON-inlines image data | 040: native image sibling with provenance; baseline standalone exit1 confirmed |
+| Command Code | Paired image carrier works; orphan baseline skips it | 040: reuse wireImagePart on orphan carrier; baseline standalone exit1 confirmed |
+| Google/Vertex/Antigravity | Data -> inline_data, tool image siblings | Remote-URL marker remains existing limitation |
+| Kiro | Data images on user carrier; orphan pairing rejected | Remote URL remains existing limitation |
+| Ollama native | Data/raw base64 images; unsupported URL/pairing rejected | Existing explicit contract |
+| Cursor native MCP | Image bytes carried with tool result | Preserve unchanged |
+| Cursor external wire | Active user images work; trailing tool images not prepared | 050: active trailing run only, existing count/byte limits |
+
+Key owners: src/responses/parser.ts:304, :732; src/claude/inbound.ts:134;
+src/adapters/anthropic.ts:637, :753, :775; src/adapters/command-code.ts:110;
+src/adapters/cursor/images.ts:647; cursor/live-transport.ts:621;
+cursor/protobuf-request.ts:1383. Ordinary user images on OpenAI were already retained.
+
+The live 10100 process is version2.43.0 from the maintainer's main checkout, not this
+worktree. A safe configuration inspection found no text-only declaration for native
+OpenAI. No model request or personal request inspection was done, so the reported
+specific OCR failure remains unattributed. Do not infer loaded commit from version.
+
+## Hypotheses and negative controls
+
+- H1 adapter cannot carry images: falsified by paired/native image branches.
+- H2 image-bearing representation is dropped on a branch: source evidence above;
+  confirm each modified owner with a standalone body/encoder probe before editing.
+- H3 capability policy intentionally omits images: true for documented URL/history
+  limits and text-only sidecars, excluded from universal vision-support claims.
+
+No new remote fetching, uploads, auth, provider metadata, tool execution, historical
+image recall, or file-handle resolution. Full audit means every row has a disposition,
+not that every upstream supports every representation. All new tests execute in CI only.

devlog/_plan/260905_external_image_roundtrip/020_wire_contract.md

@@ -2,6 +2,17 @@
 
 Depends on wp1 and its corrected Chat converter. One full PABCD cycle.
 
+Delegated B lanes (user reconfirmed unlimited useful parallelism): worker A exclusively
+edits tests/responses/openai-responses-passthrough.test.ts; worker B exclusively adds
+the HTTP regression in tests/responses/chat-completions-endpoint.test.ts. Main owns
+public docs, structure, devlog and git/CI. C reviewers are read-only and independent.
+All lanes prohibit local test suites, services, config/auth and git/FSM mutation.
+
+User steering during B: all image representations must be audited before merge. This
+cycle now publishes the wire-contract child; the original exact-head CI/merge/ancestry
+criterion is unchanged and moves to appended wp3 after the expanded audit. No criterion
+is dropped or marked met early. Only existing 020 implementation runs in this B.
+
 ## MODIFY tests/responses/openai-responses-passthrough.test.ts
 
 Import real chatCompletionsToResponsesBody, anthropicToResponsesBody,
@@ -38,6 +49,10 @@ existing Chat-to-Responses HTTP regression (line 2834). POST a user image with h
 detail and a paired tool screenshot to mock/grok-4.5; consume the stream and assert
 one captured /responses body with unchanged ordered image parts. This is real HTTP
 route proof in CI, not real-model OCR or canonical account authentication.
+The manual HTTP probe showed that data-only mock Responses frames don't satisfy the
+native event-name terminal observer. Add matching `event: response.output_text.delta`
+and `event: response.completed` fields to mockDualWireUpstream's existing frames;
+preserve all body assertions and require `[DONE]` on the new HTTP cases.
 
 ## MODIFY structure/04_transports-and-sidecars.md
 

devlog/_plan/260905_external_image_roundtrip/030_image_input_forms.md

@@ -0,0 +1,86 @@
+# Accepted image representations without silent loss
+
+Depends on 020; wp3. C3 parsing, with C4 care for the explicit translated-file error.
+Same resource/credential bounds as000; writes only paths below, no live credentials,
+network fetching, remote upload, auth changes or local suites. Stop on unresolvable
+native-vs-routed ambiguity, not by weakening native preservation.
+
+## MODIFY src/responses/parser.ts
+
+In outputToToolResultContent, input_image must follow the already-owned precedence:
+
+```diff
+- else if (raw.type === "input_image" && typeof raw.image_url === "string") { ... }
++ else if (raw.type === "input_image") {
++   const imageUrl = nonEmptyString(raw.image_url);
++   const fileId = nonEmptyString(raw.file_id);
++   if (imageUrl) { /* existing image push and normalized detail; hasImage=true */ }
++   else if (fileId) parts.push({ type: "text", text: `[image: ${fileId}]` });
++ }
+```
+
+Do not lower computer screenshots in this shared parser. Independent audit found
+that parser-only lowering shifts vision-caption alignment and breaks native/raw
+consistency. No new computer execution or observation-message semantics are added.
+
+## MODIFY src/server/responses/core.ts
+
+Immediately after existing isPassthrough determination (before vision planning), inspect
+raw input items. A non-passthrough adapter receiving computer_call_output returns fixed
+400 invalid_request_error: `computer_call_output requires a Responses passthrough
+route; send screenshots as user input_image content on translated routes.`
+No payload, source URL or call ID in the error. Passthrough stays unchanged, including
+native/keyed Responses and routed compaction using a passthrough adapter. This avoids
+shared-parser rejection of valid native traffic and preserves vision-caption alignment.
+No helper/export/import is needed; use the existing raw body and formatted error owner.
+
+## MODIFY src/claude/inbound.ts
+
+In imageBlockToInputImage, after validating source object and before base64/URL cases:
+
+```diff
++ if (source.type === "file") throw new AnthropicRequestError(
++   "File-backed images require native Anthropic passthrough; use base64 or URL images on translated routes.");
+```
+
+The existing HTTP boundary catches AnthropicRequestError as400. Native Anthropic
+passthrough never calls this converter. No file id, URL or payload echoed in errors.
+
+## MODIFY existing tests
+
+- tests/responses/responses-parser.test.ts: function/custom file-only output marker;
+  URL wins over file_id; malformed/empty refs never become images; original raw item and
+  caller object unchanged. No new computer tool declaration or toolCall emitted.
+- tests/claude-integration/claude-inbound.test.ts: user/tool source:file throws the
+  existing error; base64/URL still preserve. Native negative control stays in existing
+  claude-native-passthrough.test.ts; add endpoint error coverage at its existing seam
+  only if the reviewer finds class-to400 mapping not covered.
+- tests/responses/responses-compaction-routing.test.ts: beside the existing unpaired
+  output boundary, non-passthrough computer output returns400 with zero upstream fetch;
+  native/keyed Responses preserves exact raw screenshot and reaches its controlled
+  upstream; ordinary image message still works. Request includes another ordinary image
+  to prove there is no partial vision work or caption misassociation before rejection.
+- docs-site/src/content/docs/reference/proxy-formats.md: file handles remain provider
+  scoped; native reference forwarding vs translated marker/error; hosted computer
+  outputs require Responses passthrough, screenshots can use ordinary input_image.
+
+Verifier: one standalone direct parser/converter probe before/after (no test runner),
+node TypeScript, static test bundling, privacy scan, exact-head CI. Independent security
+review confirms no native rejection, payload logging, new fetch, or execution authority.
+Reuse existing modules; defer broad splits in large files to avoid unrelated churn.
+Publish third stacked PR against codex/external-image-wire-contract; no merge yet.
+
+## C-review corrections
+
+Accepted consumer mismatch: output parser's nonempty-URL predicate must match raw vision
+caption indexing. MODIFY src/vision/index.ts syncRawBodyImageDescriptions to skip empty
+URLs for both message/tool fields, preserve existing file marker when available, and
+never consume a later image's caption. Remove the now-unneeded private boolean argument.
+MODIFY tests/vision/vision-cache.test.ts with function/custom arrays containing empty
+URLs before two real images; actual describeImagesInPlace must preserve caption order.
+Standalone .tmp/vision-caption-alignment-probe.ts demonstrated the misalignment (exit1).
+
+Accepted coverage gap: core guard test must activate vision in its ordinary-image
+control. Explicit routed vision fixture, controlled description dependency, and no live
+account resolution; control describes once, computer-output request describes zero.
+These repairs preserve the original030scope and do not implement040or050.

devlog/_plan/260905_external_image_roundtrip/040_orphan_image_carriers.md

@@ -0,0 +1,40 @@
+# Orphan image carriers
+
+Depends on030 observation/fallback contract; wp4. C3, same bounds as000.
+
+## MODIFY src/adapters/anthropic.ts
+
+Search found orphanToolResultText and toAnthropicContentPart as owners. Add one local
+orphanToolResultContent helper returning string|unknown[]: image-free content returns
+existing orphanToolResultText exactly; an
+image-bearing array becomes an annotation text block followed by existing
+toAnthropicContentPart mappings with empty text filtered as in toAnthropicToolResult.
+Never JSON-stringify image bytes. Use helper at both sites:
+
+```diff
+- orphanBlocks.push({ type: "text", text: orphanToolResultText(tr) });
++ const orphan = orphanToolResultContent(tr);
++ orphanBlocks.push(...(typeof orphan === "string" ? [{ type: "text", text: orphan }] : orphan));
+- messages.push({ role: "user", content: orphanToolResultText(msg) });
++ messages.push({ role: "user", content: orphanToolResultContent(msg) });
+```
+
+Declare orphanBlocks unknown[] to match the existing content mapper's unknown return;
+do not add a cast/export. Keep valid tool_result blocks before orphan siblings.
+
+## MODIFY src/adapters/command-code.ts
+
+Hoist existing image extraction and wireImagePart mapping before paired/orphan split.
+Append mapped images to orphan user carrier after its provenance text; leave
+closePendingCalls before the carrier. Reuse mapped images in paired result buffer.
+No new shared utility or change to parallel-result ordering.
+
+## MODIFY tests/adapters/adapter-usage.test.ts and tests/providers/command-code-provider.test.ts
+
+Extend existing orphan/paired-image tests: standalone, duplicate, unmatched adjacent,
+user barrier, outstanding other call; data+HTTPS; mixed/empty text; native image blocks
+and no base64 in text; no fabricated tool pairing; existing exact text-only behavior.
+
+Main standalone adapter body probe must fail before and pass after. Workers have
+disjoint adapter+test paths, no suites/services/git writes. Main owns verification,
+docs note, fourth stacked PR and CI. No merge before050/060 acceptance.