feat(cli)!: expire tokens by default (#21783)

## Summary

> NOTE: Calling this out as a breaking change in case existing consumers
of the CLI depend on being able to see expired tokens OR being able to
delete tokens immediately.

Updates the `coder tokens rm` command to immediately expire a token by
ID, preserving the token record for audit trail purposes. Tokens can
still be deleted by passing `--delete`.

## Problem

During an incident on dev.coder.com, operators needed to urgently expire
an API key that was stuck in a hot loop. The only way to do this was via
direct database access:

```sql
UPDATE api_keys SET expires_at = NOW() WHERE id = '...';
```

This is not ideal for operators who may not have direct DB access or
want to avoid manual SQL.

## Solution

This PR adds:

- **API endpoint**: `PUT /api/v2/users/{user}/keys/{keyid}/expire` -
Sets the token's `expires_at` to now
- **SDK method**: `ExpireAPIKey(ctx, userID, keyID)` 
- **Updates CLI**: `coder tokens rm <name|id|token>` now _expires_ by
default. You can still delete by passing the `--delete` flag. The `coder
tokens list` command now also hides expired tokens by default. You can
`--include-expired` if needed to include them.
- **Audit logging**: The expire action is logged with old and new key
states

## Test plan

- Tests cover: owner expiring own token, admin expiring other user's
token, non-admin cannot expire other's token, 404 for non-existent token

Closes #21782

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

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

docs/reference/api/users.md

@@ -1015,6 +1015,40 @@ curl -X DELETE http://coder-server:8080/api/v2/users/{user}/keys/{keyid} \
 
 To perform this operation, you must be authenticated. [Learn more](authentication.md).
 
+## Expire API key
+
+### Code samples
+
+```shell
+# Example request using curl
+curl -X PUT http://coder-server:8080/api/v2/users/{user}/keys/{keyid}/expire \
+  -H 'Accept: */*' \
+  -H 'Coder-Session-Token: API_KEY'
+```
+
+`PUT /users/{user}/keys/{keyid}/expire`
+
+### Parameters
+
+| Name    | In   | Type           | Required | Description          |
+|---------|------|----------------|----------|----------------------|
+| `user`  | path | string         | true     | User ID, name, or me |
+| `keyid` | path | string(string) | true     | Key ID               |
+
+### Example responses
+
+> 404 Response
+
+### Responses
+
+| Status | Meaning                                                                    | Description           | Schema                                           |
+|--------|----------------------------------------------------------------------------|-----------------------|--------------------------------------------------|
+| 204    | [No Content](https://tools.ietf.org/html/rfc7231#section-6.3.5)            | No Content            |                                                  |
+| 404    | [Not Found](https://tools.ietf.org/html/rfc7231#section-6.5.4)             | Not Found             | [codersdk.Response](schemas.md#codersdkresponse) |
+| 500    | [Internal Server Error](https://tools.ietf.org/html/rfc7231#section-6.6.1) | Internal Server Error | [codersdk.Response](schemas.md#codersdkresponse) |
+
+To perform this operation, you must be authenticated. [Learn more](authentication.md).
+
 ## Get user login type
 
 ### Code samples