browser/openspec/changes/replace-scum-projections-with-real-data-management/evidence/scum-current-service-sqlite-diagnostic-2026-08-12.md

# SCUM Current-Service SQLite Diagnostic Evidence — 2026-08-12

## Scope

- Evidence kind: operator-directed, server-local, read-only diagnostic discovery.
- Execution target: `枣庄服务器` through the personal server-management MCP (`list_devices`, `test_connection`, `ssh_exec`).
- Product boundary: Platform/plugin did not download or parse `SCUM.db`. The diagnostic script executed on the game server host and emitted only schema metadata, aggregates, hashes, and redacted samples.
- Release boundary: this evidence supports adapter discovery. It does not replace the Platform durable Run job / typed Run envelope required before enabling database-backed production capabilities.

## Database Identity and Read Behavior

- One active `SCUM.db` candidate was found beside the running SCUM service metadata; no host path is recorded in this artifact.
- Read mode: Python `sqlite3` URI `mode=ro`, `PRAGMA query_only=ON`, 2s timeout.
- Database size: `80,805,888` bytes.
- SQLite metadata: `schema_version=765`, `user_version=57`, `journal_mode=wal`, `page_size=4096`, `page_count=19728`, `freelist_count=1`.
- Object inventory: `293` schema objects, `161` tables.
- Safe-read timing observed: full schema inventory `61ms`; focused groups `3ms`, `13ms`, `3ms`; join/range metrics `25ms`; follow-up join/meaning probes `27.3ms` and `5.68ms`. No read lock/busy failure was observed during these diagnostics.
- Fingerprints: full schema objects `57e34ee72660d7e4334644ee70cd6d285ac7961a3964fafdc3956d74e88dfa4f`; focused table groups `12a34e49f851879ae71ba287719c8d95019909f3060e823be4ce0973ce764841`, `a856bc4e105ab0a5e34b758237d3f96cff0ba5a65b38e7cf1eb81ab16b40caf4`, `60c97a8c782086c4b2600eb3a9b29c3074b971d5fdc6cf54137ce48e0970b26e`; join/range metrics `4905d09b70303b42cfb8e7fc936fe0df2065d7100c43e92ef79a464958249af4`.

## Evidence Matrix

| Area | Current-service evidence | Remaining ambiguity |
| --- | --- | --- |
| External player identity | `user` has `74` rows with `id TEXT` primary key, `id_type`, `provider`, `last_login_time`, `creation_time`, `is_banned`, and network-address field present but not persisted in this artifact. Follow-up aggregates show all `74` users have `id_type=Steam`, provider `Server`, and non-null identity/login/banned fields. | Product APIs must hash or fence external IDs where appropriate and must never expose IP/network material. |
| Player profile join | `user_profile` has `73` rows; all `73` join to `user` through `user_profile.user_id -> user.id`; all profiles have `type=1`. `user_profile.prisoner_id -> prisoner.id` and `prisoner.user_profile_id -> user_profile.id` both resolve `72` profiles. Indexes on `(user_id,type,name)`, `type`, and `prisoner_id` were observed. | Profile `type=1` is observed but not independently named; adapter labels must stay version-scoped rather than using reference-project meanings. |
| Character/prisoner join | `prisoner` has `72` rows and `prisoner_entity` has `72` rows mapping `prisoner_id -> prisoner.id` and `entity_id -> entity.id`. Join metrics: `73` profiles, `73` with user, `72` with prisoner, `72` with prisoner entity, `72` with entity; exactly one profile has null `prisoner_id`. | One profile has no current prisoner/entity. Online state must still come from authenticated login/session evidence, not database timestamps alone. |
| Character XML / payload | `user_profile.template_xml` is present and non-null for `73/73` profiles, length range `2541–2673`; samples were hash+length only. `prisoner_skill.xml` has `72/1656` non-null rows, length `15–65`; `item_entity.xml` has `42304/62844` non-null rows, length `136–4781`. | `user_profile.template_xml` is the verified profile-level XML source candidate, but write semantics, named attributes, and `855` mapping remain unverified. |
| Player coordinates | `entity` has `63364` rows with `location_x/y/z`, `rotation_x/y/z`, scale, flags, class, and optional BLOB data. Joined prisoner entity range: x `-872217.6875..567603.0625`, y `-843655.8125..554482.125`, z `221.87356567382812..82958.546875`; `prisoner.last_save_time` range `1773202437..1786533149`. | Save/update cadence and whether this can satisfy realtime map cadence still need measurement. |
| Squad | `squad` has `7` rows; `squad_member` has `18` rows with `squad_id`, `user_profile_id`, `rank`; all members join to both squad and profile. Rank distribution: `1:6`, `2:2`, `3:4`, `4:6`; squad sizes are `1` member for `3` squads, `2` members for `2` squads, `3` members for `1` squad, and `8` members for `1` squad. | Rank meanings / leader semantics are not present in the probed schema. Keep rank labels neutral and leader unknown unless a versioned adapter proves the mapping. |
| Vehicles | `vehicle_spawner.vehicle_entity_id -> vehicle_entity.entity_id -> entity.id` resolves all `313` vehicle spawners; `15` distinct `vehicle_asset_id` values and one redacted alias value were observed. `is_vehicle_functional` distribution is `303` true / `10` false and all spawners are marked automatically created. Vehicle entity coordinate range: x `-898438..601692.3125`, y `-881533.25..605226.5`, z `-84.04053497314453..98312.640625`. | Vehicle ownership meanings are absent from the verified join. Status can be limited to the probed functional/automatic-created fields; owner stays null. |
| Flags / bases | `base_element_flag.element_id -> base_element.element_id -> base.id` resolves all `5` flags. All `5` flags have an `owner_profile_id`; `4` of those owner profiles currently have exactly one squad membership and `1` has no current squad membership; `0` overtaker profiles are present. | Profile ownership is verified by column/join. Squad territory ownership remains separately gated because one owner has no squad membership and membership may not be the same fact as base ownership. |
| Economy / balances | `bank_account_registry.account_owner_user_profile_id -> user_profile.id` resolves all `73` accounts; `bank_account_registry_currencies.bank_account_id -> bank_account_registry.id -> account_owner_user_profile_id` resolves all `146` currency rows. The nullable `user_profile_id` columns in both bank tables are entirely null. Currency distribution: type `1` has `73` rows, `account_balance` range `-3000..830328`; type `2` has `73` rows, range `0..14636`. | Currency type meanings, units, safe command/readback semantics, and gift item aliases remain unverified. Query adapters may expose numeric type only behind version-scoped labels until commands/readback are proven. |
| Spawn/location table | `prisoner_spawn_location` has `78` rows with `location_x/y/z`, rotation, velocity, `type`, optional `shelter_id`; coordinate range roughly matches player entity bounds. | This is spawn-location evidence, not current position evidence. |

## Redaction Notes

- Player names, squad names/messages, map names, aliases, XML, BLOB payloads, tokens, and network-address material were represented only as hash+type+length when sampled.
- Three player join samples were retained only as hash of external player id plus numeric profile/prisoner/entity IDs, timestamps, fame points, and coordinates.
- Follow-up probes returned only aggregate counts, distributions, nullable counts, column names, coordinate ranges, and timing; no raw rows, host paths, XML, player/squad names, IP/network material, commands, credentials, or sockets were recorded.
- No raw SQL, host database path, credentials, direct sockets, raw XML, raw player names, or raw IP/network identifiers are recorded here.

## Resulting Gates

- Task 2.5 schema capture is satisfied for discovery: `sqlite_schema`, read-only PRAGMA metadata, indexes, foreign keys, declared types, cardinalities, and redacted samples were captured for the candidate sources.
- Task 2.6 join/meaning verification is satisfied for discovery: external identity, profile/prisoner/entity joins, flag/base joins, vehicle identity joins, bank-account joins, nullable fields, and the profile XML source candidate are recorded. Unproven rank leader semantics, squad-territory ownership, currency labels/units, and write meanings remain explicitly gated rather than guessed.
- Tasks 2.7–2.8 remain open: update cadence, query latency/lock behavior under repeated reads, map transform, gift aliases/transports, command confirmation, and `855` named-attribute mapping still require explicit verification.
- Database-backed SCUM read/write capabilities remain disabled until the corresponding versioned adapters and Run durable execution envelopes are implemented and accepted.