chore: remove coder_secret Terraform integration (#25512)

Removes the coder_secret Terraform integration: the data.coder_secret
consumption path through provisionerdserver → provisioner.proto →
provisioner/terraform, the dynamic-parameter secret-requirement
validation, and the workspace-update / resolve-autostart surfaces that
depended on it. This is being done due to a product/feature direction
change (see PLAT-243). User-secret CRUD (DB, REST, CLI, UI, telemetry, audit)
and the agent-manifest secret-injection path are untouched.

The provisionerd API is bumped from v1.17 to v1.18 rather than rolled
back: v1.17 shipped in v2.33.x, so user_secrets field numbers are
reserved and the changelog documents both versions.

Generated with assistance from Coder Agents.

codersdk/parameters.go

@@ -162,27 +162,18 @@ type PreviewParameterValidation struct {
 }
 
 type DynamicParametersRequest struct {
-	// ID identifies the request for response ordering. Websocket response
-	// IDs are monotonically increasing and may exceed the request ID when
-	// server-side events trigger additional renders.
+	// ID identifies the request. The response contains the same
+	// ID so that the client can match it to the request.
 	ID     int               `json:"id"`
 	Inputs map[string]string `json:"inputs"`
 	// OwnerID if uuid.Nil, it defaults to `codersdk.Me`
 	OwnerID uuid.UUID `json:"owner_id,omitempty" format:"uuid"`
 }
 
-type SecretRequirementStatus struct {
-	Env         string `json:"env,omitempty"`
-	File        string `json:"file,omitempty"`
-	HelpMessage string `json:"help_message"`
-	Satisfied   bool   `json:"satisfied"`
-}
-
 type DynamicParametersResponse struct {
-	ID                 int                       `json:"id"`
-	Diagnostics        []FriendlyDiagnostic      `json:"diagnostics"`
-	Parameters         []PreviewParameter        `json:"parameters"`
-	SecretRequirements []SecretRequirementStatus `json:"secret_requirements,omitempty"`
+	ID          int                  `json:"id"`
+	Diagnostics []FriendlyDiagnostic `json:"diagnostics"`
+	Parameters  []PreviewParameter   `json:"parameters"`
 	// TODO: Workspace tags
 }
 

codersdk/workspaces.go

@@ -680,10 +680,6 @@ func (c *Client) WorkspaceQuota(ctx context.Context, organizationID string, user
 
 type ResolveAutostartResponse struct {
 	ParameterMismatch bool `json:"parameter_mismatch"`
-	// SecretMismatch is true when the active template version declares
-	// `coder_secret` requirements that the workspace owner's secrets do not
-	// satisfy.
-	SecretMismatch bool `json:"secret_mismatch"`
 }
 
 func (c *Client) ResolveAutostart(ctx context.Context, workspaceID string) (ResolveAutostartResponse, error) {