docs: index n12-pre zyl evidence sources
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docs/source-discovery/2026-07-09-n12-pre-zyl-index.md
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docs/source-discovery/2026-07-09-n12-pre-zyl-index.md
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# N12-pre zyl Evidence Index
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Date: 2026-07-09
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Evidence id: `zyl-qqfile-20260709`
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Archive: `runs/offline-evidence-intake/zyl-qqfile-20260709/archives/zyl.rar`
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SHA256: `126CC72F21293829FED374321A2AFE6E067959B63A76981BCB6678C64E887173`
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Archive type: RAR5
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Archive listing summary: 3931 files, 439 folders
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Source metadata: `runs/offline-evidence-intake/zyl-qqfile-20260709/metadata/archive-list.txt`
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## Current conclusion
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The N12-pre package contains a strong local-data candidate for Stage C read tools:
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1. `MsgLib.db` files under `zyl\iSphere\...\Account\...` and `zyl\Impp\Account\...`.
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2. `importal\localcache` communication logs: `Smark.SendReceive`, `SaveToDB`, `PacketReader.ProcessPacket`, and `LoginInfo`.
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3. `importal\<hash>` document/cache directories that can later be mapped to message DB or log references for file receive/download.
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The first Stage C source candidate should be the latest visible iSphere DB for account `90005981`, with IMPP DB and communication logs as comparison/fallback evidence.
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## Candidate counts from archive list
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| Candidate family | Count / summary | Evidence examples |
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| --- | --- | --- |
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| `MsgLib.db` total | 14 files | 12 under `zyl\iSphere\...\Account\...`, 2 under `zyl\Impp\Account\...` |
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| SQLite runtime files | 4 files | `System.Data.SQLite.dll` and `System.Data.SQLite.xml` under both `zyl\iSphere` and `zyl\Impp` |
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| `LoginInfo` logs | 18 log files | account/session context |
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| `PacketReader.ProcessPacket` logs | 19 log files | packet/message processing trace |
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| `SaveToDB` logs | 15 log files | DB persistence trace |
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| `Smark.SendReceive` logs | 24 log files | send/receive transport trace; largest observed file is 10,486,426 bytes |
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| Hashed `zyl\importal\<hash>` file-cache entries | 11 files plus hashed folders | likely document/file receive cache candidates |
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## Candidate source families
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| Family | Evidence path examples | Why it matters | Initial action |
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| --- | --- | --- | --- |
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| SQLite runtime | `zyl\iSphere\System.Data.SQLite.dll`; `zyl\Impp\System.Data.SQLite.dll` | Confirms bundled SQLite usage around message libraries | record versions and inspect dependent DB files |
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| iSphere message DB | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\90005981\MsgLib.db`; `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\duyanming0731\MsgLib.db` | Strong candidate for `isphere_receive_messages`, contacts, groups, and attachment references | extract selected DB copies and inspect schema |
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| IMPP message DB | `zyl\Impp\Account\90005981\MsgLib.db`; `zyl\Impp\Account\27091282\MsgLib.db` | Older or parallel candidate source for message history | compare schema with iSphere DB |
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| Local communication logs | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\Smark.SendReceive\2026-07-07_1.log`; `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\SaveToDB\2026-07-07_1.log`; `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\PacketReader.ProcessPacket\2026-07-07_1.log` | Candidate execution trace for message receive/save behavior | inspect log structure and timestamp alignment |
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| Login/info logs | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\LoginInfo\2026-07-07_1.log` | Candidate account/session context for source mapping | inspect field names and account identifiers |
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| Received/document cache | `zyl\importal\256914c029af44bd96665abd69ddd500\*.xlsx`; `zyl\importal\4a33b65a33c14149b440724bfc3d912e\g.docx`; `zyl\importal\4fa0846abdbb4331a956cb056be9566a\*.pdf` | Candidate file receive/download cache for `isphere_receive_files` | map hashed directories to DB/log references |
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## `MsgLib.db` candidates
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| Priority | Modified time | Size bytes | Archive path | Notes |
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| --- | --- | ---: | --- | --- |
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| 1 | 2026-07-07 15:41:45 | 2,839,552 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\90005981\MsgLib.db` | latest visible iSphere DB and matches same-day logs |
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| 2 | 2022-04-24 08:52:20 | 2,776,064 | `zyl\Impp\Account\90005981\MsgLib.db` | parallel/older DB for same account id |
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| 3 | 2022-01-25 09:51:17 | 12,198,912 | `zyl\Impp\Account\27091282\MsgLib.db` | largest IMPP message DB, useful for schema comparison |
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| 4 | 2026-05-15 17:29:01 | 346,112 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\duyanming0731\MsgLib.db` | recent named-account DB for schema comparison |
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| 5 | 2026-06-22 14:03:56 | 333,824 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\mayanlong1912\MsgLib.db` | recent named-account DB for schema comparison |
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| 6 | 2026-06-25 10:59:33 | 69,632 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\xuguopeng101X\MsgLib.db` | recent named-account DB for small-schema comparison |
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| 7 | 2025-06-20 17:37:32 | 239,616 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\zhangzhenghu2730\MsgLib.db` | message DB candidate |
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| 8 | 2025-10-23 15:10:42 | 204,800 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\maxiaojie7418\MsgLib.db` | message DB candidate |
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| 9 | 2024-01-27 19:17:55 | 206,848 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\dumei0466\MsgLib.db` | message DB candidate |
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| 10 | 2025-10-10 17:14:12 | 108,544 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\90016309\MsgLib.db` | numeric-account DB candidate |
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| 11 | 2025-10-28 09:49:12 | 75,776 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\90017948\MsgLib.db` | numeric-account DB candidate |
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| 12 | 2023-03-31 15:09:48 | 394,240 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\90003887\MsgLib.db` | older numeric-account DB candidate |
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| 13 | 2022-06-14 14:54:19 | 282,624 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\90005184\MsgLib.db` | older numeric-account DB candidate |
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| 14 | 2025-06-18 14:07:17 | 191,488 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\lixing0316\MsgLib.db` | message DB candidate |
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## Same-day account `90005981` log candidates
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| Log family | Modified time | Size bytes | Archive path | Why it matters |
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| --- | --- | ---: | --- | --- |
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| `LoginInfo` | 2026-07-07 15:30:05 | 750 | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\LoginInfo\2026-07-07_1.log` | account/session context for the latest DB |
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| `SaveToDB` | 2026-07-07 15:30:09 | 9,704 | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\SaveToDB\2026-07-07_1.log` | trace of persistence into local DB |
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| `PacketReader.ProcessPacket` | 2026-07-07 15:41:45 | 244,606 | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\PacketReader.ProcessPacket\2026-07-07_1.log` | packet processing trace near DB timestamp |
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| `Smark.SendReceive` | 2026-07-07 15:43:08 | 827,884 | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\Smark.SendReceive\2026-07-07_1.log` | send/receive trace near DB timestamp |
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| `Default` | 2026-07-07 15:33:47 | 98,056 | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\Default\2026-07-07_1.log` | general client runtime context |
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| `Default/ErrorFaltal` | 2026-07-07 15:32:51 | 57,408 | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\Default\ErrorFaltal\2026-07-07_1.log` | error/runtime context for the same date |
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## Received/document cache candidates
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The archive contains hashed `zyl\importal\<hash>` directories with document-like files. The visible examples include:
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| Archive path pattern | Observed file type | MCP relevance |
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| --- | --- | --- |
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| `zyl\importal\256914c029af44bd96665abd69ddd500\*.xlsx` | spreadsheet | candidate received-file cache |
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| `zyl\importal\4a33b65a33c14149b440724bfc3d912e\g.docx` | Word document | candidate received-file cache |
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| `zyl\importal\4fa0846abdbb4331a956cb056be9566a\*.pdf` | PDF | candidate received-file cache |
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| `zyl\importal\69003b4a95b5461fbe6fba38de74bc62\*.doc` | Word document | candidate received-file cache |
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| `zyl\importal\c4f11655e8d24e96b3a0eb2e3727bba0\*.docx` | Word document | candidate received-file cache |
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| `zyl\importal\cd0cd63034824bbaa81e1136da9dc236\*.pdf` | PDF | candidate received-file cache |
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These hashed directories become useful after the DB/log inspection identifies message attachment or file-cache references.
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## First extraction target list
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| Priority | Archive path | Destination under runs | Reason |
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| --- | --- | --- | --- |
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| 1 | `zyl\iSphere\8c5e81a7f6dd1169.10083\27000000\Account\90005981\MsgLib.db` | `runs/offline-evidence-intake/zyl-qqfile-20260709/extracted/msgdb-isphere-90005981/` | latest visible iSphere message DB candidate |
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| 2 | `zyl\Impp\Account\90005981\MsgLib.db` | `runs/offline-evidence-intake/zyl-qqfile-20260709/extracted/msgdb-impp-90005981/` | compare older or parallel IMPP DB candidate |
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| 3 | `zyl\Impp\Account\27091282\MsgLib.db` | `runs/offline-evidence-intake/zyl-qqfile-20260709/extracted/msgdb-impp-27091282/` | largest observed message DB for schema comparison |
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| 4 | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\Smark.SendReceive\2026-07-07_1.log` | `runs/offline-evidence-intake/zyl-qqfile-20260709/extracted/log-smark-90005981-20260707/` | message send/receive trace candidate |
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| 5 | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\SaveToDB\2026-07-07_1.log` | `runs/offline-evidence-intake/zyl-qqfile-20260709/extracted/log-savetodb-90005981-20260707/` | DB write trace candidate |
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| 6 | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\PacketReader.ProcessPacket\2026-07-07_1.log` | `runs/offline-evidence-intake/zyl-qqfile-20260709/extracted/log-packetreader-90005981-20260707/` | packet processing trace candidate |
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| 7 | `zyl\importal\localcache\8c5e81a7f6dd1169.10083\27000000\Log\90005981\LoginInfo\2026-07-07_1.log` | `runs/offline-evidence-intake/zyl-qqfile-20260709/extracted/log-logininfo-90005981-20260707/` | account/session context candidate |
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## Stage B2 questions
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1. What are the table names and column names inside `MsgLib.db`?
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2. Which tables contain message body, sender, receiver/conversation id, timestamp, and attachment/file references?
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3. Are contact and group display names stored in the same DB or only inferable from conversation/message rows?
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4. Do `SaveToDB` and `Smark.SendReceive` logs reveal DB table mapping or message ids that can be matched to `MsgLib.db`?
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5. Which DB/log field maps to the `docs/mcp-core-tools-contract.md` output for `isphere_receive_messages`?
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## Decision after index
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Proceed to `docs/source-discovery/capability-source-matrix.md` after the first extraction target list has confirmed message DB and log candidates. The likely first Stage C implementation slice is `isphere_receive_messages` backed by `zyl\iSphere\...\Account\90005981\MsgLib.db`, subject to schema inspection.
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