fix: clear error when Bytebase server predates 3.17.0 (#192)

* fix: clear error when Bytebase server predates 3.17.0

Bytebase 3.16.x servers emit a bare UUID in the actuator `workspace`
field; since 3.17.0 the provider no longer prepends `workspaces/` to
that value, so the bare UUID was forwarded as the IAM policy resource
and the server rejected it with a cryptic
`invalid workspace resource "<uuid>"` error.

Fail fast at client init with an explicit version-mismatch message
instead, matching how other Terraform providers handle backend version
skew.

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

* fix: satisfy revive error-strings rule

Drop the trailing period and restructure the multi-sentence error
into a single sentence so the string no longer ends with punctuation.

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

---------

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

Author: vsai12

client/client.go

@@ -107,10 +107,17 @@ func NewClient(url, email, password string) (api.Client, error) {
 	if err != nil {
 		return nil, errors.Wrapf(err, "failed to get actuator info")
 	}
-	c.workspaceName = actuatorResp.Msg.GetWorkspace()
-	if c.workspaceName == "" {
+	workspace := actuatorResp.Msg.GetWorkspace()
+	if workspace == "" {
 		return nil, errors.New("actuator returned empty workspace name; cannot initialize provider")
 	}
+	if !strings.HasPrefix(workspace, "workspaces/") {
+		return nil, errors.Errorf(
+			"legacy workspace value %q (expected %q); this provider version requires Bytebase >= 3.17.0, upgrade the server or pin the provider to \"~> 3.16\"",
+			workspace, "workspaces/<id>",
+		)
+	}
+	c.workspaceName = workspace
 
 	return &c, nil
 }