chore: package send sandbox evidence gate

docs/current-status-card.md

@@ -58,7 +58,7 @@ N13/N14/N15 are pre-business validation results. They can help identify UI eleme
 
 ## Current loop
 
-Current loop: `R6b B-route preview/dry-run contract complete; next R6c online sandbox-send evidence gate`.
+Current loop: `R6c local online-sandbox evidence package prepared; next R6d returned sandbox evidence intake after package is run and returned`.
 
 Plan file: `docs/superpowers/plans/2026-07-10-core-business-capabilities-roadmap.md`.
 
@@ -115,6 +115,7 @@ Current loop output so far:
 42. R5b/C30-live: analyzed returned live-probe package `isphere-live-probe-20260710-121958`; confirmed one x86 `IMPlatformClient.exe` `4.1.2.6842`, live server endpoint evidence, installed B-route DLL presence, active local `MsgLib.db` path shape, and A-route UIA selectors for search/draft/send/file menu. Production send remains blocked because the probe did not prove runtime entrypoint reachability or send success/ack mapping and the captured chat panels report an offline-send blocker.
 43. R6a/C31: added WinHelper `0.4.0` read-only `probe_send_entrypoints` and `probe_send_uia_controls`, wired the live recorder to emit `send_entrypoints_preflight.json` and `send_uia_controls_preflight.json`, and verified that copied install metadata reports all 5 required B-route entrypoints available while the synthetic UIA classifier reports `A_ROUTE_OFFLINE_BLOCKED`. Production send/file upload remains blocked pending preview/dry-run, dynamic observation, idempotency/audit, and one approved sandbox send.
 44. R6b: added `isphere_send_message` preview/dry-run only. The tool validates `target_type`, `target_id`, `content_sha256`, and `idempotency_key`, returns connector metadata `implatform-sidecar`/`preview`, appends redacted JSONL audit events without raw message body or raw idempotency key, and returns `send_status="blocked"` for production with all side-effect flags false. `verify-go-mcp.ps1` now verifies the 9-tool surface and proves `send_preview_tool_present=true` and `production_send_enabled=false`.
+45. R6c: because the local machine cannot log in, prepared an online/internal sandbox evidence package instead of attempting local send. Added `scripts/package-send-sandbox-gate.ps1`, `scripts/verify-send-sandbox-gate-package.ps1`, and `docs/source-discovery/2026-07-10-send-sandbox-gate.md`; local verification generates `runs/send-sandbox-gate-package.zip` with the read-only recorder, before/after scripts, sandbox input template, SHA256 helper, expected-return checklist, and return-zip helper.
 
 ## Recompiled business roadmap
 
@@ -185,3 +186,14 @@ R6b B-route preview/dry-run contract is complete:
 - `ISPHERE_SEND_AUDIT_PATH` can override the local audit JSONL path; the default path is ignored under `runs/send-audit/send-message-preview.jsonl`.
 - Standard MCP smoke now verifies 9 tools and confirms production send is not enabled.
 - Decision: next node is R6c online sandbox-send evidence gate. Do not implement production send until one approved sandbox send proves success/ack or sent-record evidence and duplicate idempotency protection.
+
+R6c local preparation for online sandbox-send evidence is complete:
+
+- Local login is still unavailable, so no local live send was attempted.
+- Created `docs/source-discovery/2026-07-10-send-sandbox-gate.md`.
+- Added package script `scripts/package-send-sandbox-gate.ps1`.
+- Added verification script `scripts/verify-send-sandbox-gate-package.ps1`.
+- Verified package output: `runs/send-sandbox-gate-package.zip`.
+- Package requires an online/internal sandbox operator to run before/after read-only recorder captures around exactly one manual sandbox send.
+- Production `isphere_send_message` and `isphere_send_file` remain blocked until the returned package proves success/ack or sent-record evidence and no second send.
+- Next node: R6d returned sandbox evidence intake after the package is run and returned.

docs/go-mcp-runbook.md

@@ -354,7 +354,52 @@ powershell -NoProfile -ExecutionPolicy Bypass -File .\scripts\validate-n12r-retu
 
 Keep the validation report outside `$captureRoot`; the returned package is evidence input and should remain unchanged.
 
-## 13. Troubleshooting
+## 13. R6c online sandbox send evidence package
+
+The local development machine cannot log in to iSphere. Do not attempt to prove production send locally.
+
+To prepare the online/internal sandbox evidence package:
+
+```powershell
+powershell -NoProfile -ExecutionPolicy Bypass -File scripts\package-send-sandbox-gate.ps1
+```
+
+Verify the package locally:
+
+```powershell
+powershell -NoProfile -ExecutionPolicy Bypass -File scripts\verify-send-sandbox-gate-package.ps1
+```
+
+Expected output includes:
+
+```json
+{
+  "ok": true,
+  "local_login_required": false,
+  "online_sandbox_required": true,
+  "production_send_enabled": false
+}
+```
+
+Generated package:
+
+```text
+runs\send-sandbox-gate-package.zip
+```
+
+Send that zip to the online/internal sandbox operator. The operator must follow `OPERATOR-STEPS.md` inside the package:
+
+1. fill `SANDBOX-SEND-INPUTS.json`;
+2. run `run-before-recorder.bat`;
+3. manually send exactly one sandbox message in the official client;
+4. fill `success_ack_or_sent_record`;
+5. run `run-after-recorder.bat`;
+6. run `make-return-zip.ps1`;
+7. return the generated zip.
+
+Production `isphere_send_message` remains blocked until the returned package is analyzed.
+
+## 14. Troubleshooting
 
 - If C# helper build fails, run `scripts\build-win-helper.ps1` directly and check for missing .NET Framework reference assemblies.
 - If `win_helper_version` fails, rerun `powershell -NoProfile -ExecutionPolicy Bypass -File scripts\verify-win-helper.ps1` first.

docs/source-discovery/2026-07-10-send-sandbox-gate.md

@@ -0,0 +1,109 @@
+# Send Sandbox Gate
+
+Date: 2026-07-10
+Node: R6c online sandbox-send evidence gate
+
+## Local constraint
+
+The local development environment cannot log in to iSphere / IMPlatformClient because it has no reachable service endpoint. Therefore R6c cannot be completed by a local live send.
+
+Decision for this loop: prepare a returnable online sandbox evidence package instead of attempting any local send.
+
+## Package produced
+
+Script:
+
+```powershell
+powershell -NoProfile -ExecutionPolicy Bypass -File scripts\package-send-sandbox-gate.ps1
+```
+
+Verification:
+
+```powershell
+powershell -NoProfile -ExecutionPolicy Bypass -File scripts\verify-send-sandbox-gate-package.ps1
+```
+
+Generated package:
+
+```text
+runs/send-sandbox-gate-package/
+runs/send-sandbox-gate-package.zip
+```
+
+The package embeds the existing read-only live probe recorder under:
+
+```text
+recorder/ISphereLiveProbeRecorder.exe
+recorder/variants/ISphereLiveProbeRecorder-x86.exe
+```
+
+## Package files
+
+| File | Purpose |
+| --- | --- |
+| `README.txt` | Explains local login limitation, online sandbox requirement, and one-send rule. |
+| `OPERATOR-STEPS.md` | Step-by-step operator procedure. |
+| `SANDBOX-SEND-INPUTS.template.json` | Template for sandbox target, content hash, idempotency key, and observed result. |
+| `EXPECTED-RETURN-FILES.txt` | Return package acceptance checklist. |
+| `run-before-recorder.bat` | Runs read-only recorder before the manual sandbox send. |
+| `run-after-recorder.bat` | Runs read-only recorder after the manual sandbox send. |
+| `compute-content-hash.ps1` | Computes SHA256 for the exact test message body. |
+| `make-return-zip.ps1` | Creates the return zip after before/after recordings and input JSON are present. |
+
+## Operator rules
+
+The package encodes these explicit markers:
+
+```text
+LOCAL_LOGIN_UNAVAILABLE
+ONLINE_SANDBOX_REQUIRED
+MANUAL_ONE_SEND_ONLY
+DO_NOT_SEND_SECOND_TIME
+content_sha256
+idempotency_key
+success_ack_or_sent_record
+```
+
+Required online procedure:
+
+1. Log in normally on an online/internal sandbox machine.
+2. Fill `SANDBOX-SEND-INPUTS.json` from the template.
+3. Run `run-before-recorder.bat`.
+4. Manually send exactly one message to the declared sandbox target.
+5. Record `success_ack_or_sent_record`.
+6. Do not send a second copy.
+7. Run `run-after-recorder.bat`.
+8. Run `make-return-zip.ps1`.
+9. Return the generated zip.
+
+## Safety boundary
+
+The package does not:
+
+- send messages automatically;
+- upload files;
+- click or type;
+- inject or hook;
+- capture network traffic;
+- enable production send.
+
+The only send action is the operator's one manual sandbox send inside the official client.
+
+## Acceptance gate
+
+R6c can pass only after a returned package proves all of the following:
+
+- explicit sandbox target;
+- exactly one content hash;
+- exactly one idempotency key;
+- observed success/ack or local sent-record evidence;
+- confirmation that no second send was made;
+- before/after read-only recorder outputs are present.
+
+## Current decision
+
+R6c local-preparation slice is complete, but the full online evidence gate is not passed yet.
+
+Production `isphere_send_message` remains blocked.
+
+Next node: **R6d returned sandbox evidence intake** after the user returns the generated package.

docs/source-discovery/2026-07-10-send-sidecar-b-first-plan.md

@@ -344,17 +344,17 @@ connector_stage = "preview" | "sandbox_send" | "production"
 
 ## Next implementation loop
 
-R6b B-route preview/dry-run contract is now complete. `isphere_send_message` is registered as preview/dry-run only, validates target/content-hash/idempotency input, appends redacted audit JSONL, and blocks production with all side-effect flags false.
+R6c local preparation is now complete. Because the local development machine cannot log in, the online sandbox-send gate was converted into a returnable evidence package rather than a local live-send attempt.
 
-Next node should be **R6c online sandbox-send evidence gate**:
+Next node should be **R6d returned sandbox evidence intake** after the package is run in an online/internal sandbox and returned:
 
-1. Prepare or collect one operator-approved sandbox send evidence package.
+1. Check completed `SANDBOX-SEND-INPUTS.json`.
-2. Use one explicit sandbox target, one content hash, and one idempotency key.
+2. Check before/after read-only recorder outputs.
-3. Observe success/ack or local sent-record evidence.
+3. Confirm one explicit sandbox target, one content hash, and one idempotency key.
-4. Prove duplicate retry with the same idempotency key is locally rejected before any second send.
+4. Confirm `success_ack_or_sent_record`.
-5. Capture method names, argument shape, IDs/hashes, status booleans, and refs only.
+5. Confirm no second send was made.
-6. Do not enable production `send_message_after_approval` until the evidence gate passes.
+6. Do not enable production `send_message_after_approval` until returned evidence passes.
 
 ## Current status
 
-B is selected as the primary send/file-send route. Runtime discovery, entrypoint metadata preflight, and preview/dry-run audit are in place. A remains the fallback and now has concrete UIA selector/offline-blocker classifier support. Production send remains blocked until dynamic observation and one approved sandbox send prove success/ack behavior.
+B is selected as the primary send/file-send route. Runtime discovery, entrypoint metadata preflight, preview/dry-run audit, and the online sandbox evidence package are in place. A remains the fallback and now has concrete UIA selector/offline-blocker classifier support. Production send remains blocked until the returned sandbox package proves success/ack behavior.

docs/source-discovery/capability-source-matrix.md

@@ -6,6 +6,7 @@ Evidence index: `docs/source-discovery/2026-07-09-n12-pre-zyl-index.md`
 Schema notes: `docs/source-discovery/2026-07-09-n12-pre-zyl-schema-notes.md`
 Returned live probe: `docs/source-discovery/2026-07-10-returned-live-probe-analysis.md`
 Send connector preflight: `docs/source-discovery/2026-07-10-send-connector-preflight.md`
+Send sandbox gate: `docs/source-discovery/2026-07-10-send-sandbox-gate.md`
 
 ## Source priority
 
@@ -24,8 +25,8 @@ Send connector preflight: `docs/source-discovery/2026-07-10-send-connector-prefl
 | `isphere_search_contacts` | bare sender/receiver JIDs extracted from normalized log-backed messages loaded from configured PacketReader file or directory source | validated copied `MsgLib.db` tables: `TD_Roster`, `TD_CustomEffigy`, `tblRecent`, `tblChatLevel`, `tblPersonMsg`; decrypted roster/contact stanzas from `Smark.SendReceive`; UIA helper source if display names are still missing | `docs/source-discovery/2026-07-10-msglib-readonly-schema-extraction.md`; `internal/isphere/contacts_test.go`; `internal/tools/isphere_contacts_test.go` | C34 documents optional MsgLib contact display enrichment; R2 adds deterministic exact-match-first ranking, case-insensitive de-duplication across log/MsgLib candidates, and preserves `source`/`raw_ref` | core contact search complete; optional richer fields later |
 | `isphere_search_groups` | decrypted `PacketReader.ProcessPacket` `type="groupchat"` stanzas and conference/MUC JIDs loaded from configured PacketReader file or directory source | validated copied `MsgLib.db` tables: `tblMsgGroupPersonMsg`, `TD_WorkGroupAuth`, `tblRecent`; UIA helper source if group display names are still missing | `docs/source-discovery/2026-07-10-msglib-readonly-schema-extraction.md`; `internal/isphere/groups_test.go`; `internal/tools/isphere_groups_test.go`; C9 ignored-log scan: PacketReader 86 groupchat/86 conference hits; Smark 24 groupchat/658 conference/631 muc hits | C34 documents optional MsgLib group display enrichment; R2 adds deterministic exact-match-first ranking, case-insensitive de-duplication across log/MsgLib candidates, and preserves `source`/`raw_ref` | core group search complete; optional member/owner hierarchy later |
 | `isphere_receive_files` | decrypted `PacketReader.ProcessPacket` file-transfer message stanzas via `internal/isphere.ListFilesFromMessages` and `isphere_receive_files` list mode; configured PacketReader file or directory source; `zyl\importal\<hash>` cache entries remain unlinked | MsgLib `TD_ReceiveFileRecord` safe metadata through explicit copied-DB path; decrypted `Smark.SendReceive` and `SaveToDB` traces for file-reference reconciliation; future UIA/client connector for download | `docs/source-discovery/2026-07-09-n12-pre-zyl-schema-notes.md#c12-file-transfer-evidence-precheck`; `docs/source-discovery/2026-07-10-file-download-mapping-precheck.md`; `docs/source-discovery/2026-07-10-file-cache-mapping-diagnostic.md` | C22 verifies safe file-list contract args; R3 confirms list metadata is available; R3b diagnostic finds 0 current cache/archive matches, so R4 remains blocked | blocked pending better cache evidence or UI/client download connector |
-| `isphere_send_message` | B-route selected: running-client sidecar / in-process connector, preferring `AppContextManager.SendTxtMessageByJid(...)` or `MessageScheduling.SendChatMessage(...)` over the unimplemented `SendP2PMessage(...)` interface path; current MCP tool exposes preview/dry-run only | A-route fallback: constrained UI/RPA wrapper only if B cannot pass runtime probe, entrypoint availability, dynamic observation, and idempotent dry-run gates; network/protocol replay remains deferred | `docs/source-discovery/2026-07-10-send-message-source-precheck.md`; `docs/source-discovery/2026-07-10-send-message-connector-selection.md`; `docs/source-discovery/2026-07-10-send-sidecar-b-first-plan.md`; `docs/source-discovery/2026-07-10-returned-live-probe-analysis.md`; `docs/source-discovery/2026-07-10-send-connector-preflight.md`; `internal/tools/isphere_send_message_test.go` | R6b registers `isphere_send_message` preview/dry-run only. Preview validates target/content hash/idempotency, returns `send_status="planned"`, connector metadata, redacted audit metadata, and all side-effect flags false. Production returns `send_status="blocked"` and `production_send_enabled=false` in verification. No real send, success/ack, or production idempotency behavior is proven. | next: R6c online sandbox-send evidence gate; production send remains blocked |
+| `isphere_send_message` | B-route selected: running-client sidecar / in-process connector, preferring `AppContextManager.SendTxtMessageByJid(...)` or `MessageScheduling.SendChatMessage(...)` over the unimplemented `SendP2PMessage(...)` interface path; current MCP tool exposes preview/dry-run only | A-route fallback: constrained UI/RPA wrapper only if B cannot pass runtime probe, entrypoint availability, dynamic observation, and idempotent dry-run gates; network/protocol replay remains deferred | `docs/source-discovery/2026-07-10-send-message-source-precheck.md`; `docs/source-discovery/2026-07-10-send-message-connector-selection.md`; `docs/source-discovery/2026-07-10-send-sidecar-b-first-plan.md`; `docs/source-discovery/2026-07-10-returned-live-probe-analysis.md`; `docs/source-discovery/2026-07-10-send-connector-preflight.md`; `docs/source-discovery/2026-07-10-send-sandbox-gate.md`; `internal/tools/isphere_send_message_test.go` | R6c prepares the online sandbox evidence package because local login is unavailable. `runs/send-sandbox-gate-package.zip` can collect before/after read-only recorder outputs around one manual sandbox send, but no returned evidence has been analyzed yet. Production remains blocked. | next: R6d returned sandbox evidence intake after user returns the package |
-| `isphere_send_file` | B-route selected after send-message probe: managed offline-file path through `OffLineFileSend.sendFile()`, `IMPP.Service*.dll` `IFileTransfer.FileUpload(...)`, and `Chat.sendFileMessage(...)` | A-route fallback: constrained UI/RPA upload/send-file flow; native `TcpFileTransfer.dll` is a later candidate only after managed path is rejected | `docs/source-discovery/2026-07-10-send-message-source-precheck.md`; `docs/source-discovery/2026-07-10-send-message-connector-selection.md`; `docs/source-discovery/2026-07-10-send-sidecar-b-first-plan.md`; `docs/source-discovery/2026-07-10-returned-live-probe-analysis.md`; `docs/source-discovery/2026-07-10-send-connector-preflight.md` | R6a/C31 metadata confirms `FileTransfer.FileUpload`, `FileTransfer.AsynFileUpload`, `OffLineFileSend.sendFile`, and `Chat.sendFileMessage` candidates. File-send remains blocked behind message-send sandbox evidence plus later upload/file-message dry-run evidence. | next: wait for R6c sandbox-send evidence, then file-send upload preflight |
+| `isphere_send_file` | B-route selected after send-message probe: managed offline-file path through `OffLineFileSend.sendFile()`, `IMPP.Service*.dll` `IFileTransfer.FileUpload(...)`, and `Chat.sendFileMessage(...)` | A-route fallback: constrained UI/RPA upload/send-file flow; native `TcpFileTransfer.dll` is a later candidate only after managed path is rejected | `docs/source-discovery/2026-07-10-send-message-source-precheck.md`; `docs/source-discovery/2026-07-10-send-message-connector-selection.md`; `docs/source-discovery/2026-07-10-send-sidecar-b-first-plan.md`; `docs/source-discovery/2026-07-10-returned-live-probe-analysis.md`; `docs/source-discovery/2026-07-10-send-connector-preflight.md`; `docs/source-discovery/2026-07-10-send-sandbox-gate.md` | R6a/C31 metadata confirms `FileTransfer.FileUpload`, `FileTransfer.AsynFileUpload`, `OffLineFileSend.sendFile`, and `Chat.sendFileMessage` candidates. File-send remains blocked behind returned message-send sandbox evidence plus later upload/file-message dry-run evidence. | next: wait for R6d, then file-send upload preflight |
 
 ## Stage C entry rule
 
@@ -42,4 +43,4 @@ Start Stage C with a narrow log-backed `isphere_receive_messages` source abstrac
 
 ## Deferred source work
 
-`MsgLib.db` has a validated copied read-only open path through the bundled 32-bit `System.Data.SQLite.dll` and password `123`. C27 adds `MsgLibReadSidecar` as the bounded x86 .NET reader boundary, C28 adds the Go `internal/msglib` process client, C29 adds bounded `display_entities` extraction, C30 wires it as optional contact/group MCP enrichment, C31 proves real copied-DB MCP enrichment with sanitized output, C32 reuses it for receive-message display fields, C33 proves that receive display path through a real copied-DB MCP smoke without printing entity values, C34 documents the operator setup/verification path, C35 maps MsgLib message tables to receive-message contract fields without reading row values, C36 adds metadata-only `message_sources` readiness, C37 defines the bounded DB-backed receive-source design, C38 implements sidecar/Go-wrapper `list_messages` with sanitized verification, C39 adds a Go adapter from MsgLib list results to the receive-message domain model, C40 adds explicit tool-level `msglib_readonly` source selection, C41 wires env-configured explicit MsgLib receive with optional sanitized smoke, R1 documents source reconciliation keys, and R2 hardens contact/group search ranking and de-duplication. The active roadmap is `docs/superpowers/plans/2026-07-10-core-business-capabilities-roadmap.md`; next step is R6c online sandbox-send evidence gate.
+`MsgLib.db` has a validated copied read-only open path through the bundled 32-bit `System.Data.SQLite.dll` and password `123`. C27 adds `MsgLibReadSidecar` as the bounded x86 .NET reader boundary, C28 adds the Go `internal/msglib` process client, C29 adds bounded `display_entities` extraction, C30 wires it as optional contact/group MCP enrichment, C31 proves real copied-DB MCP enrichment with sanitized output, C32 reuses it for receive-message display fields, C33 proves that receive display path through a real copied-DB MCP smoke without printing entity values, C34 documents the operator setup/verification path, C35 maps MsgLib message tables to receive-message contract fields without reading row values, C36 adds metadata-only `message_sources` readiness, C37 defines the bounded DB-backed receive-source design, C38 implements sidecar/Go-wrapper `list_messages` with sanitized verification, C39 adds a Go adapter from MsgLib list results to the receive-message domain model, C40 adds explicit tool-level `msglib_readonly` source selection, C41 wires env-configured explicit MsgLib receive with optional sanitized smoke, R1 documents source reconciliation keys, and R2 hardens contact/group search ranking and de-duplication. The active roadmap is `docs/superpowers/plans/2026-07-10-core-business-capabilities-roadmap.md`; next step is R6d returned sandbox evidence intake after the online package is returned.

docs/superpowers/plans/2026-07-10-core-business-capabilities-roadmap.md

@@ -28,9 +28,9 @@
 | Search contacts | Registered MCP tool; deterministic exact-match ranking and case-insensitive de-duplication across log/JID candidates and optional copied-DB MsgLib display enrichment. | Optional richer fields such as department/title remain future enrichment, not a core search blocker. | complete for core search; optional enrichment later |
 | Search groups | Registered MCP tool; deterministic exact-match ranking and case-insensitive de-duplication across groupchat/conference candidates and optional copied-DB MsgLib display enrichment. | Optional member count, owner refs, and nested/group hierarchy remain future enrichment, not a core search blocker. | complete for core search; optional enrichment later |
 | Receive messages | PacketReader source works; copied `MsgLib.db` explicit receive works with `source_preference="msglib_readonly"`; R1 precheck says default should remain PacketReader until a future reconciliation helper is implemented. | Future reconciliation helper, source confidence scoring, pagination policy. | future receive helper after R2/R3 |
-| Send messages | `isphere_send_message` preview/dry-run is registered; R6a confirms B-route entrypoint metadata and A-route UIA/offline-state classifier support. | Need dynamic observation and one approved sandbox send before production. | next R6c online sandbox-send evidence gate |
+| Send messages | `isphere_send_message` preview/dry-run is registered; R6a confirms B-route entrypoint metadata; R6c local package for online sandbox evidence is prepared. | Need returned online sandbox evidence proving success/ack and no duplicate send before production. | next R6d returned sandbox evidence intake |
 | Receive files | List mode exists from message-derived file metadata; R3/R3b confirm DB file metadata exists but current cache/archive evidence does not map to local files. | R4 download is blocked until better cache evidence or a UI/client download connector is available. | blocked; continue R5 |
-| Send files | Contract exists; R6a/C31 metadata confirms file-upload/offline-file/file-message candidates and A-route file menu classifier support. | Blocked behind send-message sandbox evidence plus upload/file-transfer dry-run. | wait for R6c, then file-send upload preflight |
+| Send files | Contract exists; R6a/C31 metadata confirms file-upload/offline-file/file-message candidates and A-route file menu classifier support. | Blocked behind returned send-message sandbox evidence plus upload/file-transfer dry-run. | wait for R6d, then file-send upload preflight |
 
 ## Node Sequence
 
@@ -474,11 +474,45 @@ powershell -NoProfile -ExecutionPolicy Bypass -File scripts\verify-go-mcp.ps1
 **Stop condition:**
 - If the environment cannot log in or cannot use a sandbox target, stop and request a returned sandbox evidence package rather than implementing production send.
 
+**R6c Result:**
+
+- Created `docs/source-discovery/2026-07-10-send-sandbox-gate.md`.
+- Added `scripts/package-send-sandbox-gate.ps1`.
+- Added `scripts/verify-send-sandbox-gate-package.ps1`.
+- Generated and locally verified `runs/send-sandbox-gate-package.zip`.
+- The package includes the read-only live probe recorder plus before/after recorder batch files, sandbox input template, SHA256 helper, expected-return checklist, and return-zip script.
+- This local slice does not pass the online evidence gate because the local machine cannot log in. It only prepares the exact package needed for an online/internal sandbox operator.
+- Decision: next node is R6d returned sandbox evidence intake after the package is run and returned. Production `isphere_send_message` and `isphere_send_file` remain blocked.
+
+---
+
+### R6d: Returned sandbox evidence intake
+
+**Purpose:** Analyze the returned R6c online sandbox-send evidence package and decide whether production send implementation can start.
+
+**Files:**
+- Create: `docs/source-discovery/2026-07-10-returned-send-sandbox-analysis.md`
+- Modify: this roadmap, `docs/current-status-card.md`, and `docs/source-discovery/capability-source-matrix.md`.
+
+**Evidence to check:**
+- Completed `SANDBOX-SEND-INPUTS.json`.
+- Before recorder output.
+- After recorder output.
+- `success_ack_or_sent_record`.
+- Confirmation that no second send was made.
+
+**Acceptance gate:**
+- If success/ack or sent-record evidence and duplicate-send prevention are proven, allow the later R6 production implementation node to start.
+- If any item is missing, keep production send blocked and request a corrected returned package.
+
+**Stop condition:**
+- Do not infer success from screenshots or vague operator notes alone. Require the structured returned package fields and before/after recorder output.
+
 ---
 
 ### R6: Send-message preview and production path
 
-**Purpose:** Implement production `isphere_send_message` after R6c proves success/ack behavior.
+**Purpose:** Implement production `isphere_send_message` after R6d analyzes returned sandbox evidence and proves success/ack behavior.
 
 **Files:**
 - Create or modify: `internal/tools/isphere_send_message.go`

scripts/package-send-sandbox-gate.ps1

@@ -0,0 +1,271 @@
+param(
+    [string]$OutputDir = "runs/send-sandbox-gate-package",
+    [switch]$NoZip
+)
+
+$ErrorActionPreference = "Stop"
+Set-StrictMode -Version Latest
+
+$repo = (Resolve-Path -LiteralPath (Join-Path $PSScriptRoot "..")).Path
+$packageDir = Join-Path $repo $OutputDir
+$recorderRelative = Join-Path $OutputDir "recorder"
+$recorderDir = Join-Path $packageDir "recorder"
+$zipPath = "$packageDir.zip"
+
+if (Test-Path -LiteralPath $packageDir) {
+    Remove-Item -LiteralPath $packageDir -Recurse -Force
+}
+if (Test-Path -LiteralPath $zipPath) {
+    Remove-Item -LiteralPath $zipPath -Force
+}
+New-Item -ItemType Directory -Force -Path $packageDir | Out-Null
+
+& powershell -NoProfile -ExecutionPolicy Bypass -File (Join-Path $repo "scripts\package-live-probe-recorder.ps1") -OutputDir $recorderRelative -NoZip
+if ($LASTEXITCODE -ne 0) {
+    throw "package-live-probe-recorder.ps1 failed with exit code $LASTEXITCODE"
+}
+if (-not (Test-Path -LiteralPath (Join-Path $recorderDir "ISphereLiveProbeRecorder.exe"))) {
+    throw "recorder package was not created under $recorderDir"
+}
+
+@'
+R6c iSphere Send Sandbox Gate Package
+
+LOCAL_LOGIN_UNAVAILABLE: the development machine cannot log in to iSphere.
+ONLINE_SANDBOX_REQUIRED: run this package only on a machine/network where iSphere/IMPlatformClient can log in.
+
+Goal:
+- collect one operator-approved sandbox-send evidence package;
+- keep production send disabled in the repository;
+- return enough evidence to decide whether production send work can start later.
+
+What this package does:
+- runs the read-only live probe recorder before the manual sandbox send;
+- asks the operator to manually send exactly one sandbox message in the official client;
+- runs the same read-only recorder after the manual send;
+- zips the returned evidence folder.
+
+What this package does not do:
+- it does not send messages automatically;
+- it does not click or type;
+- it does not upload files;
+- it does not hook or inject into the client;
+- it does not enable production send.
+
+Required rule:
+- MANUAL_ONE_SEND_ONLY: send exactly one sandbox message manually.
+- DO_NOT_SEND_SECOND_TIME: do not send a second message with the same content or idempotency key.
+- Record content_sha256 and idempotency_key in SANDBOX-SEND-INPUTS.json.
+- Fill success_ack_or_sent_record after the operator sees the sent message, ack, or local sent record.
+
+Return:
+- run make-return-zip.ps1 and send back the generated zip.
+'@ | Set-Content -LiteralPath (Join-Path $packageDir "README.txt") -Encoding UTF8
+
+@'
+# R6c Online Sandbox Send Gate - Operator Steps
+
+This package is for an online/internal sandbox only.
+
+Markers:
+- LOCAL_LOGIN_UNAVAILABLE: do not run this on the local development machine for proof.
+- ONLINE_SANDBOX_REQUIRED: run on a machine where iSphere/IMPlatformClient can log in.
+- MANUAL_ONE_SEND_ONLY: send exactly one test message manually.
+- DO_NOT_SEND_SECOND_TIME: do not repeat the send with the same idempotency_key.
+
+## Step 1 - Prepare inputs
+
+1. Copy `SANDBOX-SEND-INPUTS.template.json` to `SANDBOX-SEND-INPUTS.json`.
+2. Fill:
+   - `sandbox_target_type`
+   - `sandbox_target_id`
+   - `content_text_to_send`
+   - `idempotency_key`
+3. Run:
+
+```powershell
+powershell -NoProfile -ExecutionPolicy Bypass -File .\compute-content-hash.ps1 -Text "<exact content_text_to_send>"
+```
+
+4. Copy the printed SHA256 into `content_sha256`.
+
+## Step 2 - Before-send recording
+
+1. Open and log in to iSphere/IMPlatformClient normally.
+2. Open the sandbox target conversation.
+3. Do not send anything yet.
+4. Run `run-before-recorder.bat`.
+
+## Step 3 - Manual one-send action
+
+1. In the official iSphere client, manually send exactly the `content_text_to_send`.
+2. Send it only to the declared sandbox target.
+3. Do not send a second copy.
+4. Fill these fields in `SANDBOX-SEND-INPUTS.json`:
+   - `manual_send_started_at_local`
+   - `manual_send_finished_at_local`
+   - `operator_observed_success`
+   - `success_ack_or_sent_record`
+   - `do_not_send_second_time_confirmed`
+
+## Step 4 - After-send recording
+
+Run `run-after-recorder.bat`.
+
+## Step 5 - Return package
+
+Run:
+
+```powershell
+powershell -NoProfile -ExecutionPolicy Bypass -File .\make-return-zip.ps1
+```
+
+Send back the generated zip file.
+
+## Required returned evidence
+
+The returned evidence should contain:
+
+- before recorder output;
+- after recorder output;
+- completed `SANDBOX-SEND-INPUTS.json`;
+- success_ack_or_sent_record text;
+- confirmation that there was no second send.
+
+The repository must keep production send disabled until this evidence is reviewed.
+'@ | Set-Content -LiteralPath (Join-Path $packageDir "OPERATOR-STEPS.md") -Encoding UTF8
+
+@'
+{
+  "gate": "R6c online sandbox-send evidence gate",
+  "LOCAL_LOGIN_UNAVAILABLE": true,
+  "ONLINE_SANDBOX_REQUIRED": true,
+  "MANUAL_ONE_SEND_ONLY": true,
+  "DO_NOT_SEND_SECOND_TIME": true,
+  "sandbox_target_type": "direct-or-group",
+  "sandbox_target_id": "<sandbox target id only>",
+  "content_text_to_send": "<exact one-time sandbox message text>",
+  "content_sha256": "<sha256 hex of content_text_to_send>",
+  "idempotency_key": "<one unique idempotency key>",
+  "manual_send_started_at_local": "",
+  "manual_send_finished_at_local": "",
+  "operator_observed_success": false,
+  "success_ack_or_sent_record": "",
+  "do_not_send_second_time_confirmed": false,
+  "notes": ""
+}
+'@ | Set-Content -LiteralPath (Join-Path $packageDir "SANDBOX-SEND-INPUTS.template.json") -Encoding UTF8
+
+@'
+Expected return files for R6c:
+
+1. SANDBOX-SEND-INPUTS.json
+   - content_sha256 is filled.
+   - idempotency_key is filled.
+   - success_ack_or_sent_record is filled.
+   - MANUAL_ONE_SEND_ONLY is true.
+   - DO_NOT_SEND_SECOND_TIME is true.
+   - do_not_send_second_time_confirmed is true.
+
+2. return-evidence/before/*
+   - Read-only recorder output before manual send.
+
+3. return-evidence/after/*
+   - Read-only recorder output after manual send.
+
+4. The generated zip from make-return-zip.ps1.
+
+Decision rule:
+- If success_ack_or_sent_record is missing, production send remains blocked.
+- If duplicate/idempotency confirmation is missing, production send remains blocked.
+- If the target was not an explicit sandbox target, production send remains blocked.
+'@ | Set-Content -LiteralPath (Join-Path $packageDir "EXPECTED-RETURN-FILES.txt") -Encoding UTF8
+
+@'
+@echo off
+setlocal
+cd /d "%~dp0"
+mkdir return-evidence 2>nul
+mkdir return-evidence\before 2>nul
+echo Running BEFORE read-only recorder...
+recorder\ISphereLiveProbeRecorder.exe --record-live-probe --out "%~dp0return-evidence\before" --no-pause
+echo Done. Check return-evidence\before.
+pause
+'@ | Set-Content -LiteralPath (Join-Path $packageDir "run-before-recorder.bat") -Encoding ASCII
+
+@'
+@echo off
+setlocal
+cd /d "%~dp0"
+mkdir return-evidence 2>nul
+mkdir return-evidence\after 2>nul
+echo Running AFTER read-only recorder...
+recorder\ISphereLiveProbeRecorder.exe --record-live-probe --out "%~dp0return-evidence\after" --no-pause
+echo Done. Check return-evidence\after.
+pause
+'@ | Set-Content -LiteralPath (Join-Path $packageDir "run-after-recorder.bat") -Encoding ASCII
+
+@'
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$Text
+)
+
+$bytes = [System.Text.Encoding]::UTF8.GetBytes($Text)
+$sha = [System.Security.Cryptography.SHA256]::Create()
+try {
+    $hash = $sha.ComputeHash($bytes)
+    -join ($hash | ForEach-Object { $_.ToString("x2") })
+}
+finally {
+    $sha.Dispose()
+}
+'@ | Set-Content -LiteralPath (Join-Path $packageDir "compute-content-hash.ps1") -Encoding ASCII
+
+@'
+$ErrorActionPreference = "Stop"
+Set-StrictMode -Version Latest
+
+$root = Split-Path -Parent $MyInvocation.MyCommand.Path
+$inputs = Join-Path $root "SANDBOX-SEND-INPUTS.json"
+if (-not (Test-Path -LiteralPath $inputs)) {
+    throw "missing SANDBOX-SEND-INPUTS.json; copy the template and fill it first"
+}
+$before = Join-Path $root "return-evidence\before"
+$after = Join-Path $root "return-evidence\after"
+if (-not (Test-Path -LiteralPath $before)) {
+    throw "missing before recorder output: $before"
+}
+if (-not (Test-Path -LiteralPath $after)) {
+    throw "missing after recorder output: $after"
+}
+
+$stamp = Get-Date -Format "yyyyMMdd-HHmmss"
+$zip = Join-Path $root ("isphere-send-sandbox-return-" + $stamp + ".zip")
+$items = @(
+    $inputs,
+    (Join-Path $root "return-evidence"),
+    (Join-Path $root "EXPECTED-RETURN-FILES.txt")
+)
+Compress-Archive -Path $items -DestinationPath $zip -Force
+[ordered]@{
+    ok = $true
+    zip = $zip
+    production_send_enabled = $false
+    online_sandbox_required = $true
+} | ConvertTo-Json -Depth 4 -Compress
+'@ | Set-Content -LiteralPath (Join-Path $packageDir "make-return-zip.ps1") -Encoding ASCII
+
+if (-not $NoZip) {
+    Compress-Archive -Path (Join-Path $packageDir "*") -DestinationPath $zipPath -Force
+}
+
+[ordered]@{
+    ok = $true
+    package_dir = (Resolve-Path -LiteralPath $packageDir).Path
+    recorder_dir = (Resolve-Path -LiteralPath $recorderDir).Path
+    zip = if (Test-Path -LiteralPath $zipPath) { (Resolve-Path -LiteralPath $zipPath).Path } else { $null }
+    local_login_required = $false
+    online_sandbox_required = $true
+    production_send_enabled = $false
+} | ConvertTo-Json -Depth 4 -Compress

scripts/verify-send-sandbox-gate-package.ps1

@@ -0,0 +1,80 @@
+param(
+    [string]$OutputDir = "runs/send-sandbox-gate-package"
+)
+
+$ErrorActionPreference = "Stop"
+Set-StrictMode -Version Latest
+
+$repo = (Resolve-Path -LiteralPath (Join-Path $PSScriptRoot "..")).Path
+$packageScript = Join-Path $repo "scripts\package-send-sandbox-gate.ps1"
+
+if (-not (Test-Path -LiteralPath $packageScript)) {
+    throw "missing package script: $packageScript"
+}
+
+$packageRoot = Join-Path $repo $OutputDir
+$zipPath = "$packageRoot.zip"
+if (Test-Path -LiteralPath $packageRoot) {
+    Remove-Item -LiteralPath $packageRoot -Recurse -Force
+}
+if (Test-Path -LiteralPath $zipPath) {
+    Remove-Item -LiteralPath $zipPath -Force
+}
+
+& powershell -NoProfile -ExecutionPolicy Bypass -File $packageScript -OutputDir $OutputDir
+if ($LASTEXITCODE -ne 0) {
+    throw "package-send-sandbox-gate.ps1 failed with exit code $LASTEXITCODE"
+}
+
+$requiredFiles = @(
+    "README.txt",
+    "OPERATOR-STEPS.md",
+    "SANDBOX-SEND-INPUTS.template.json",
+    "EXPECTED-RETURN-FILES.txt",
+    "run-before-recorder.bat",
+    "run-after-recorder.bat",
+    "make-return-zip.ps1",
+    "recorder\ISphereLiveProbeRecorder.exe",
+    "recorder\variants\ISphereLiveProbeRecorder-x86.exe"
+)
+
+foreach ($relative in $requiredFiles) {
+    $path = Join-Path $packageRoot $relative
+    if (-not (Test-Path -LiteralPath $path)) {
+        throw "missing package file: $relative"
+    }
+}
+
+$readme = Get-Content -LiteralPath (Join-Path $packageRoot "README.txt") -Raw
+$steps = Get-Content -LiteralPath (Join-Path $packageRoot "OPERATOR-STEPS.md") -Raw
+$expected = Get-Content -LiteralPath (Join-Path $packageRoot "EXPECTED-RETURN-FILES.txt") -Raw
+
+foreach ($needle in @(
+    "LOCAL_LOGIN_UNAVAILABLE",
+    "ONLINE_SANDBOX_REQUIRED",
+    "MANUAL_ONE_SEND_ONLY",
+    "DO_NOT_SEND_SECOND_TIME",
+    "content_sha256",
+    "idempotency_key",
+    "success_ack_or_sent_record"
+)) {
+    if ($readme -notmatch [regex]::Escape($needle) -and $steps -notmatch [regex]::Escape($needle) -and $expected -notmatch [regex]::Escape($needle)) {
+        throw "package instructions missing required phrase: $needle"
+    }
+}
+
+if (-not (Test-Path -LiteralPath $zipPath)) {
+    throw "missing package zip: $zipPath"
+}
+
+$result = [ordered]@{
+    ok = $true
+    package_dir = (Resolve-Path -LiteralPath $packageRoot).Path
+    zip = (Resolve-Path -LiteralPath $zipPath).Path
+    required_file_count = $requiredFiles.Count
+    local_login_required = $false
+    online_sandbox_required = $true
+    production_send_enabled = $false
+}
+
+$result | ConvertTo-Json -Depth 4 -Compress