[breaking, deploy server first] fix(ai-chat): persist providerExecuted flag on tool parts (#20030)

## Summary
Fixes Sentry errors of the form:

> \`messages.3: \`tool_use\` ids were found without \`tool_result\`
blocks immediately after: srvtoolu_…. Each \`tool_use\` block must have
a corresponding \`tool_result\` block in the next message.\`

### Root cause
When the model invokes a **provider-hosted tool** (e.g. Anthropic's
native \`web_search\` — note the \`srvtoolu_\` ID prefix), the AI SDK
marks the resulting \`UIMessagePart\` with \`providerExecuted: true\`.
\`convertToModelMessages\` uses that flag to emit the
tool_use/tool_result pair *inside the same assistant message* — the
format Anthropic requires for server-side tools.

Our \`AgentMessagePart\` persistence was dropping \`providerExecuted\`
on the way to the DB (and re-hydration didn't know to set it). On the
next turn, \`convertToModelMessages\` treated the rehydrated part as a
client-side tool call, splitting it into \`assistant(tool_use)\` +
\`user(tool_result)\` — which Anthropic then rejects with the error
above.

### Fix
- Add nullable \`providerExecuted BOOLEAN\` column on
\`core.agentMessagePart\` via a fast instance command.
- Surface the field on \`AgentMessagePartDTO\` (GraphQL).
- Preserve it through \`mapUIMessagePartsToDBParts\` (server) and both
\`mapDBPartToUIMessagePart\` mappers (server + frontend).
- Include it in \`GET_CHAT_MESSAGES\` and \`GET_AGENT_TURNS\`
selections.
- Regenerate \`generated-metadata/graphql.ts\`.

### Backwards compatibility
Existing rows have \`NULL providerExecuted\` and round-trip as the
omitted flag — which is exactly the pre-fix behaviour for tool parts
that were never provider-executed. Only *new* assistant messages using
\`web_search\` (or other provider-hosted tools) will write \`true\`, and
those are the only ones that were breaking.

## Test plan
- [x] \`npx tsgo\` typecheck — server + front clean
- [x] \`oxlint\` + \`prettier --check\` on all touched files — clean
- [x] \`npx nx run twenty-server:database:migrate:prod\` runs the new
instance command locally; \`providerExecuted\` column present on
\`core.agentMessagePart\`
- [x] Regenerated \`generated-metadata/graphql.ts\` —
\`providerExecuted\` wired into both queries and \`AgentMessagePart\`
type
- [ ] Manual: start a chat with Anthropic web_search enabled, invoke the
tool in turn 1, reply in turn 2 — should not throw the srvtoolu error

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/twenty-server/src/database/commands/upgrade-version-command/instance-commands.constant.ts

@@ -16,6 +16,7 @@ import { AddGlobalObjectContextToCommandMenuItemAvailabilityTypeFastInstanceComm
 import { AddPageLayoutIdToCommandMenuItemFastInstanceCommand } from 'src/database/commands/upgrade-version-command/1-23/1-23-instance-command-fast-1776168404836-add-page-layout-id-to-command-menu-item';
 import { AddConditionalAvailabilityExpressionToPageLayoutWidgetFastInstanceCommand } from 'src/database/commands/upgrade-version-command/1-23/1-23-instance-command-fast-1775654781000-add-conditional-availability-expression-to-page-layout-widget';
 import { AddIsPreInstalledToApplicationRegistrationFastInstanceCommand } from 'src/database/commands/upgrade-version-command/2-0/2-0-instance-command-fast-1776886452831-add-is-pre-installed-to-application-registration';
+import { AddProviderExecutedToAgentMessagePartFastInstanceCommand } from 'src/database/commands/upgrade-version-command/2-1/2-1-instance-command-fast-1777012800000-add-provider-executed-to-agent-message-part';
 import { BackfillPageLayoutWidgetPositionSlowInstanceCommand } from 'src/database/commands/upgrade-version-command/2-1/2-1-instance-command-slow-1795000002000-backfill-page-layout-widget-position';
 
 export const INSTANCE_COMMANDS = [
@@ -35,5 +36,6 @@ export const INSTANCE_COMMANDS = [
   AddPageLayoutIdToCommandMenuItemFastInstanceCommand,
   AddConditionalAvailabilityExpressionToPageLayoutWidgetFastInstanceCommand,
   AddIsPreInstalledToApplicationRegistrationFastInstanceCommand,
+  AddProviderExecutedToAgentMessagePartFastInstanceCommand,
   BackfillPageLayoutWidgetPositionSlowInstanceCommand,
 ];