Fixes all our Go file imports to match the preferred spec that we've _mostly_ been using. For example:
```
import (
"context"
"time"
"github.com/prometheus/client_golang/prometheus"
"golang.org/x/xerrors"
"gopkg.in/natefinch/lumberjack.v2"
"cdr.dev/slog/v3"
"github.com/coder/coder/v2/codersdk/agentsdk"
"github.com/coder/serpent"
)
```
3 groups: standard library, 3rd partly libs, Coder libs.
This PR makes the change across the codebase. The PR in the stack above modifies our formatting to maintain this state of affairs, and is a separate PR so it's possible to review that one in detail.
Upgrades to slog v3 which includes a small, but backward incompatible API change to the acceptible call arguments when logging. This change allows us to verify via compile time type checking that arguments are correct and won't cause a panic, as was possible in slog v1, which this replaces (v2 was tagged but never used in coder/coder).
It also updates dependencies that also use slog and were updated.
I've left the `aibridge` dependency as a commit SHA, under the assumption that the team there (cc @pawbana @dannykopping ) will tag and update the dependency soon and on their own schedule.
Other dependencies, I pushed new tags.
Breaking API Change:
> The presence of the `ip` field on `codersdk.ConnectionLog` cannot be
guaranteed, and so the field has been made optional. It may be omitted
on API responses.
When running a scaletest, I noticed logs of the form:
```
2025-09-12 06:34:10.924 [erro] coderd.workspaceapps: upsert connection log failed trace=0xa17580 span=0xa17620 workspace_id=81b937d7-5777-4df5-b5cb-80241f30326f agent_id=78b2ff6d-b4a6-4a4e-88a7-283e05455a88 app_id=00000000-0000-0000-0000-000000000000 user_id=00000000-0000-0000-0000-000000000000 user_agent="" app_slug_or_port=terminal status_code=404 request_id=67f03cf8-9523-444a-97bc-90de080a54c8 ...
error= 1 error occurred:
* pq: null value in column "ip" of relation "connection_logs" violates not-null constraint
```
to ensure logs are never omitted from the connection log due to a
missing IP again (i.e. I'm not sure if we can always rely on a valid,
parseable, IP from `(http.Request).RemoteAddr`), I've removed the `NOT
NULL` constraint on `ip` on `connection_logs`, and made `ip` on the API
response optional.
The specific cause for these null IPs was the
`/workspaceproxies/me/issue-signed-app-token [post]` endpoint
constructing it's own `http.Request` without a `RemoteAddr` set, and
then passing that to the token issuer.
To solve this, we'll have workspace proxies send the real IP of the
client when calling `/workspaceproxies/me/issue-signed-app-token [post]`
via the header `Coder-Workspace-Proxy-Real-IP`.
* chore: add /v2 to import module path
go mod requires semantic versioning with versions greater than 1.x
This was a mechanical update by running:
```
go install github.com/marwan-at-work/mod/cmd/mod@latest
mod upgrade
```
Migrate generated files to import /v2
* Fix gen
Spike Curtis