In relation to
[`internal#1281`](coder/internal#1281)

Managed agent workspace build limits are now advisory only. Breaching
the limit no longer blocks workspace creation — it only surfaces a
warning.

- Removed hard-limit enforcement in `checkAIBuildUsage` so AI task
builds are always permitted regardless of managed agent count.
- Updated the license warning to remove "Further managed agent builds
will be blocked." verbiage.
- Updated tests to assert builds succeed beyond the limit instead of
failing.
- Removed the "Limit" display from the `ManagedAgentsConsumption`
progress bar — the bar is now relative to the included allowance (soft
limit) only, and turns orange when usage exceeds it.

Bonus:

- De-MUI'd `LicenseBannerView` — replaced Emotion CSS and MUI `Link`
with Tailwind classes.
- Added `highlight-orange` color token to the Tailwind theme.

(cherry picked from commit 2038997)

In relation to
[`internal#1281`](coder/internal#1281)

Remove the `soft_limit` field from the `Feature` type and simplify
license limit handling. This change:

- Removes the `soft_limit` field from the API and SDK
- Uses the soft limit value as the single `limit` value in the UI and
API
- Simplifies warning logic to only show warnings when the limit is
exceeded
- Updates tests to reflect the new behavior
- Updates the UI to use the single limit value for display

(cherry picked from commit 051ed34)

#21998 accidentally allowed `Managed Agents` usages whilst being on an
`Enterprise` license. This was incorrect, it should work as the
following (same as prior to #21998).

| Scenario | Before your PRs | After your PRs (bug) | After this fix |
|---|---|---|---|
| Unlicensed (AGPL) | Permitted | Permitted | Permitted |
| Licensed, no entitlement | **Blocked** | Permitted | **Blocked** |
| Licensed, explicitly disabled (limit=0) | **Blocked** | Permitted |
**Blocked** |
| Licensed, entitled, under limit | Permitted | Permitted | Permitted |
| Licensed, entitled, over limit | Blocked | Permitted (advisory) |
Permitted (advisory) |
| Any license, stop/delete | Permitted | Permitted | Permitted |
| Any license, non-AI build | Permitted | Permitted | Permitted |