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src/providers/mssql/queries/modelconversation.js

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+export const MODELCONVERSATION_COLUMNS = `
+    id,
+    companyuser_id,
+    provider,
+    model,
+    created_at,
+    updated_at,
+    state
+`;
+
+export const LIST_BY_COMPANYUSER = `
+SELECT
+${MODELCONVERSATION_COLUMNS}
+FROM modelconversation
+WHERE companyuser_id = @companyuserId
+ORDER BY updated_at DESC, id DESC
+`;
+
+export const GET_BY_COMPANYUSER_AND_ID = `
+SELECT
+${MODELCONVERSATION_COLUMNS}
+FROM modelconversation
+WHERE id = @id AND companyuser_id = @companyuserId
+`;
+
+export const CREATE = `
+INSERT INTO modelconversation (
+    companyuser_id,
+    provider,
+    model
+)
+OUTPUT
+    INSERTED.id,
+    INSERTED.companyuser_id,
+    INSERTED.provider,
+    INSERTED.model,
+    INSERTED.created_at,
+    INSERTED.updated_at,
+    INSERTED.state
+VALUES (
+    @companyuserId,
+    @provider,
+    @model
+)
+`;
+
+/** Atomic idle guard + touch: affects 0 rows unless the conversation is idle. */
+export const TOUCH_IF_IDLE = `
+UPDATE modelconversation
+SET updated_at = SYSUTCDATETIME()
+WHERE id = @id AND companyuser_id = @companyuserId AND state = 'idle'
+`;
+
+/** Unconditional touch (used when appending assistant/system messages or updating activity). */
+export const TOUCH = `
+UPDATE modelconversation
+SET updated_at = SYSUTCDATETIME()
+WHERE id = @id AND companyuser_id = @companyuserId
+`;
+
+/** Updates conversation state ('idle' | 'busy') and touches updated_at. */
+export const SET_STATE = `
+UPDATE modelconversation
+SET state = @state, updated_at = SYSUTCDATETIME()
+OUTPUT
+    INSERTED.id,
+    INSERTED.companyuser_id,
+    INSERTED.provider,
+    INSERTED.model,
+    INSERTED.created_at,
+    INSERTED.updated_at,
+    INSERTED.state
+WHERE id = @id AND companyuser_id = @companyuserId
+`;
+
+export const DELETE_BY_COMPANYUSER_AND_ID = `
+DELETE FROM modelconversation
+WHERE id = @id AND companyuser_id = @companyuserId
+`;

src/providers/mssql/queries/modelmessage.js

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+export const MODELMESSAGE_COLUMNS = `
+    id,
+    conversation_id,
+    created_at,
+    role,
+    message
+`;
+
+export const LIST_BY_CONVERSATION = `
+SELECT
+${MODELMESSAGE_COLUMNS}
+FROM modelmessage
+WHERE conversation_id = @conversationId
+ORDER BY id ASC
+`;
+
+export const CREATE = `
+INSERT INTO modelmessage (
+    conversation_id,
+    role,
+    message
+)
+OUTPUT
+    INSERTED.id,
+    INSERTED.conversation_id,
+    INSERTED.created_at,
+    INSERTED.role,
+    INSERTED.message
+VALUES (
+    @conversationId,
+    @role,
+    @message
+)
+`;

src/providers/mssql/queries/modelvfs.js

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+export const MODELVFS_COLUMNS = `
+    id,
+    company_id,
+    name,
+    mime,
+    meta,
+    created_at,
+    updated_at
+`;
+
+export const GET_BY_COMPANY_AND_NAME = `
+SELECT
+${MODELVFS_COLUMNS},
+content
+FROM modelvfs
+WHERE company_id = @companyId AND name = @name
+`;
+
+export const GET_META_BY_COMPANY_AND_NAME = `
+SELECT
+${MODELVFS_COLUMNS}
+FROM modelvfs
+WHERE company_id = @companyId AND name = @name
+`;
+
+export const LIST_BY_COMPANY = `
+SELECT
+${MODELVFS_COLUMNS}
+FROM modelvfs
+WHERE company_id = @companyId
+ORDER BY name ASC
+`;
+
+export const UPSERT = `
+MERGE modelvfs AS target
+USING (SELECT @companyId AS company_id, @name AS name) AS src
+    ON target.company_id = src.company_id AND target.name = src.name
+WHEN MATCHED THEN
+    UPDATE SET mime = @mime, content = @content, meta = @meta, updated_at = SYSUTCDATETIME()
+WHEN NOT MATCHED THEN
+    INSERT (company_id, name, mime, content, meta)
+    VALUES (@companyId, @name, @mime, @content, @meta)
+OUTPUT
+    INSERTED.id,
+    INSERTED.company_id,
+    INSERTED.name,
+    INSERTED.mime,
+    INSERTED.meta,
+    INSERTED.created_at,
+    INSERTED.updated_at;
+`;
+
+export const DELETE_BY_COMPANY_AND_NAME = `
+DELETE FROM modelvfs
+OUTPUT DELETED.id
+WHERE company_id = @companyId AND name = @name
+`;
+
+export const DELETE_ALL_BY_COMPANY = `
+DELETE FROM modelvfs
+OUTPUT DELETED.id
+WHERE company_id = @companyId
+`;