Susana Ferreira e71249a821 fix: ai cost control cap configurable AI spend limit (#27640) ...

## Problem

A configured AI spend limit was only validated as `gte=0`, with no upper
bound. The group spend query multiplies the per-member limit by the
number of attributed members, so a large enough limit overflows `bigint`
and fails the whole query, returning an error for every group in the
request rather than just the misconfigured one.

## Changes

- Add `MaxAISpendLimitMicros`, $1,000,000 per member per budget period.
- Reject group budgets and per-user overrides above the maximum with a
400 naming the limit.
- Bound both budget forms in the UI so they show the valid range before
submitting.

Follow-up
https://github.com/coder/coder/pull/27589#discussion_r3668956350
Depends on https://github.com/coder/coder/pull/27589

> [!NOTE]
> Initially generated by Claude Opus 5, modified and reviewed by
@ssncferreira

2026-07-29 14:00:13 +01:00

..

docs.go

fix: ai cost control cap configurable AI spend limit (#27640)

2026-07-29 14:00:13 +01:00

swagger.json

fix: ai cost control cap configurable AI spend limit (#27640)

2026-07-29 14:00:13 +01:00