Returned Send Sandbox Analysis

Date: 2026-07-10 Node: R6d returned sandbox evidence intake Returned package: C:\Users\zhaoy\Downloads\1631.zip Local intake copy: runs/returned-send-sandbox/1631/

Decision

Use this return package as partial R6d evidence only.

Business interpretation:

It is enough to continue the next engineering loop with a sandbox-only send connector shell, idempotency/audit hardening, and stricter returned-package validation.
It is not enough to enable production isphere_send_message.
It is not enough to start isphere_send_file production work.

Repository behavior remains:

production_send_enabled=false

Validator

Repeatable validation command:

powershell -NoProfile -ExecutionPolicy Bypass -File scripts\validate-returned-send-sandbox-package.ps1 -PackagePath C:\Users\zhaoy\Downloads\1631.zip

Fixture test:

powershell -NoProfile -ExecutionPolicy Bypass -File scripts\test-validate-returned-send-sandbox-package.ps1

Observed validator result:

{
  "partial_evidence_usable": true,
  "r6d_gate_pass": false,
  "capability_test_ok": true,
  "capability_tool_count": 9,
  "production_send_enabled": false,
  "content_hash_matches": true,
  "operator_observed_success": true,
  "do_not_send_second_time_confirmed": true,
  "has_before_probe": true,
  "has_after_probe": false,
  "missing_for_full_gate": [
    "manual_send_started_at_local",
    "manual_send_finished_at_local",
    "after_recorder_output"
  ],
  "decision": "partial_use_only"
}

Evidence received

The returned zip contains:

isphere-live-probe-20260710-162555.zip
RUN-RECORDING-SUITE.txt
SANDBOX-SEND-INPUTS..json
send-capability-test-package.txt

Notes:

SANDBOX-SEND-INPUTS..json has a double dot in the filename, but the validator accepts this pattern.
The target id is present but should stay redacted in committed docs.
The raw message body is not needed in committed docs; the validator checks the supplied SHA256 against the local returned JSON.
The capability-test transcript proves the offline-safe 9-tool package ran successfully and kept production send disabled.

Evidence that is usable now

Usable for next engineering loop:

explicit sandbox target fields are present;
content SHA256 matches the supplied test content;
idempotency key is present;
operator recorded observed success/sent-record text;
operator confirmed no second send;
one read-only live probe package was returned;
capability smoke passed with 9 tools and production_send_enabled=false.

This is enough to justify moving from "waiting for any returned send evidence" to:

returned-package validator hardening;
sandbox-only connector shell design;
idempotency/audit persistence design;
fake/sandbox connector tests.

Missing for full R6d pass

Missing:

manual_send_started_at_local;
manual_send_finished_at_local;
after-send recorder output;
standard return-evidence/before and return-evidence/after shape from make-return-zip.ps1.

Because these are missing, the full gate does not pass.

Current route decision

Proceed with "partial use" only:

R6d partial_use_only -> R6e sandbox-only send connector shell and idempotency audit hardening

Do not change the current MCP production-send response:

execution_mode="production" -> send_status="blocked"

What would make it full pass later

Ask the operator to return a corrected package only when convenient:

run 02-run-after-recorder.bat;
fill manual_send_started_at_local;
fill manual_send_finished_at_local;
run 03-make-return-zip.bat;
return the generated isphere-send-sandbox-return-*.zip.

The current partial package can still be used for the next local development loop.

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