docs: add send upload deep dive validation items

docs/source-discovery/2026-07-12-login-reachability-validation-items.md

@@ -0,0 +1,75 @@
+# Login Reachability Validation Items
+
+Date: 2026-07-12
+
+Purpose: this is the operator-facing checklist for the 2026-07-13 logged-in environment. It is generated from the offline send/upload deep dive and should be used to build the one-shot reachability probe package.
+
+## P0 items
+
+### Confirm logged-in IMPlatformClient.exe process and loaded assemblies
+
+- Category: runtime
+- Evidence to capture: process id, module list, loaded managed assemblies
+- Unlocks: all B-route adapter tests
+
+### Confirm AppContextManager/IAppContextManager reachability
+
+- Category: runtime
+- Evidence to capture: type visible, instance path, SendTxtMessageByJid callable shape
+- Unlocks: text send high-level path
+
+### Confirm Chat/XMPPConnection authenticated state
+
+- Category: runtime
+- Evidence to capture: Chat instance, XMPPConnection state, target JID mapping
+- Unlocks: text and file message finalization
+
+### Capture FileUploadPara required values without leaking token
+
+- Category: file_upload
+- Evidence to capture: host, port, domain, local path presence, IsImg/IsPublic, token-present boolean/hash only
+- Unlocks: upload_file probe
+
+### Confirm IFileTransfer/FileTransfer.FileUpload reachability
+
+- Category: file_upload
+- Evidence to capture: service instance or constructor path, method signature, safe call readiness
+- Unlocks: file upload
+
+### Confirm FileUploadResult.FileID after safe test upload
+
+- Category: file_upload_result
+- Evidence to capture: FileID present, size/name or URL/remote folder metadata, failure code if upload fails
+- Unlocks: send_file_message
+
+### Confirm trans_UploadCompleted/SendFileMessage consumes FileID
+
+- Category: send_file_message
+- Evidence to capture: FileID enters payload, Chat.sendFileMessage invoked, sent file record/ack
+- Unlocks: production file send
+
+### Correlate sent record/ack with content hash or file hash
+
+- Category: ack
+- Evidence to capture: sent record timestamp, target ref, body/file metadata hash, ack/ref id
+- Unlocks: production gate
+
+## P1 items
+
+### Confirm group ChatRoom branch and permissions
+
+- Category: group
+- Evidence to capture: ChatRoom type, speech/upload permission state, group JID
+- Unlocks: group send/file send
+
+### If B-route reachability fails, capture A-route UI evidence
+
+- Category: fallback
+- Evidence to capture: window hwnd, rtbSendMessage, btnSend, screenshots, failure reason
+- Unlocks: demo fallback only
+
+## Pass criteria
+
+- Text send can move forward when logged-in runtime exposes AppContextManager or MessageScheduling plus Chat/XMPPConnection and sent-record/ack correlation is possible.
+- File send can move forward when logged-in runtime exposes IFileTransfer/FileUpload, FileUploadPara values, FileUploadResult.FileID, and Chat.sendFileMessage finalization evidence.
+- Production remains blocked if any P0 item is missing or only static evidence is available.