feat: prompt template tech debt — tests, read-only endpoints, double-… (#67)

* feat: prompt template tech debt — tests, read-only endpoints, double-load fix, server creation modal

Close test coverage gaps for prompt templates:
- Resume with deleted template: verifies graceful degradation (template_content=None, warning logged)
- Threading safety: concurrent set_template/init_system_messages with no race conditions
- Factory passthrough: template kwarg propagation through WorkstreamManager.create()

Add read-only template listing endpoints (read scope, no content exposed):
- GET /v1/api/templates — prompt template summaries (name, category, is_default, origin)
- GET /v1/api/ws-templates — enabled workstream template summaries (name, description, model)
- Available on both server and console; Python + TypeScript SDK methods added
- Console creation modal switched from admin endpoint to read-scope endpoint

Eliminate double-load inefficiency in workstream creation:
- Template validation moved before mgr.create() (no create-then-rollback on invalid template)
- template kwarg plumbed through WorkstreamManager.create() and session factory
- _SessionFactory Protocol added for proper mypy typing

Add workstream creation modal to server web UI:
- Name, model, template dropdown, ws_template/profile dropdown
- Instrument panel aesthetic: gradient top border, blur backdrop, amber accent
- Focus trap, Escape/Enter keyboard handling, loading state, error display
- WCAG AA contrast compliance, reduced-motion support

* fix: add list_ws_templates SDK methods + regenerate OpenAPI snapshots

Add list_ws_templates() to Python SDK (async + sync) and listWsTemplates()
to TypeScript SDK for the new GET /v1/api/ws-templates server endpoint.
Add WsTemplateSummary + ListWsTemplateSummaryResponse TypeScript types.
Regenerate openapi-server.json and openapi-console.json snapshots.

Addresses Copilot review feedback on PR #67.

* fix: skip template pre-validation when resuming a workstream

When resume_ws is set, the request's template field is irrelevant —
resume() restores the template from workstream_config. Pre-validating
a stale template name would incorrectly return 400 before the resume
even runs.

Addresses Copilot review feedback on PR #67.

sdk/typescript/src/server.ts

@@ -11,7 +11,9 @@ import type {
   HealthResponse,
   ListMemoriesOptions,
   ListMemoriesResponse,
+  ListPromptTemplateSummaryResponse,
   ListSavedWorkstreamsResponse,
+  ListWsTemplateSummaryResponse,
   ListWorkstreamsResponse,
   MemoryInfo,
   SaveMemoryRequest,
@@ -196,6 +198,16 @@ export class TurnstoneServer extends BaseClient {
     return this.request("GET", "/v1/api/workstreams/saved");
   }
 
+  // -- Templates --------------------------------------------------------------
+
+  async listTemplates(): Promise<ListPromptTemplateSummaryResponse> {
+    return this.request("GET", "/v1/api/templates");
+  }
+
+  async listWsTemplates(): Promise<ListWsTemplateSummaryResponse> {
+    return this.request("GET", "/v1/api/ws-templates");
+  }
+
   // -- Memories -------------------------------------------------------------
 
   async listMemories(

sdk/typescript/src/types.ts

@@ -143,6 +143,35 @@ export interface ListSavedWorkstreamsResponse {
   workstreams: SavedWorkstreamInfo[];
 }
 
+// ---------------------------------------------------------------------------
+// Server API — Prompt templates
+// ---------------------------------------------------------------------------
+
+export interface PromptTemplateSummary {
+  name: string;
+  category: string;
+  is_default: boolean;
+  origin: string;
+}
+
+export interface ListPromptTemplateSummaryResponse {
+  templates: PromptTemplateSummary[];
+}
+
+// ---------------------------------------------------------------------------
+// Server API — Workstream templates
+// ---------------------------------------------------------------------------
+
+export interface WsTemplateSummary {
+  name: string;
+  description: string;
+  model: string;
+}
+
+export interface ListWsTemplateSummaryResponse {
+  ws_templates: WsTemplateSummary[];
+}
+
 // ---------------------------------------------------------------------------
 // Server API — Health
 // ---------------------------------------------------------------------------