chore(showcase): unify unsupported demo convention

Drop gen-ui-interrupt and interrupt-headless demo entries from
manifest.yaml for langroid and claude-sdk-typescript, and delete
the orphan stub page.tsx + README.md files for those routes. Both
features stay listed in not_supported_features so the dashboard
keeps showing the no-entry icon with hover tooltip.

Aligns these two integrations with the convention used by the other
12 integrations that mark these features unsupported (ag2, agno,
built-in-agent, claude-sdk-python, crewai-crews, google-adk,
llamaindex, mastra, pydantic-ai, spring-ai, strands): icon-only
with tooltip rather than a Demo / Code row that links to a stub
page explaining why there is nothing to demo.

Author: AlemTuzlak

showcase/integrations/claude-sdk-typescript/manifest.yaml

@@ -463,24 +463,6 @@ demos:
     highlight:
       - src/app/demos/beautiful-chat/page.tsx
       - src/app/api/copilotkit/route.ts
-  - id: gen-ui-interrupt
-    name: Generative UI (Interrupt)
-    description: Unsupported in this integration — the Claude SDK pass-through does not expose interrupt-driven UI primitives
-    tags:
-      - generative-ui
-    route: /demos/gen-ui-interrupt
-    animated_preview_url:
-    highlight:
-      - src/app/demos/gen-ui-interrupt/page.tsx
-  - id: interrupt-headless
-    name: Interrupt (Headless)
-    description: Unsupported in this integration — the Claude SDK pass-through does not expose interrupt-driven UI primitives
-    tags:
-      - chat-ui
-    route: /demos/interrupt-headless
-    animated_preview_url:
-    highlight:
-      - src/app/demos/interrupt-headless/page.tsx
   - id: hitl-in-chat
     name: In-Chat HITL (useHumanInTheLoop — ergonomic API)
     description: Interactive approval/decision surface rendered inline in the chat via the high-level `useHumanInTheLoop` hook

showcase/integrations/claude-sdk-typescript/src/app/demos/gen-ui-interrupt/README.md

@@ -500,17 +500,3 @@ demos:
       - src/app/demos/a2ui-fixed-schema/a2ui/definitions.ts
       - src/app/demos/a2ui-fixed-schema/a2ui/renderers.tsx
       - src/app/api/copilotkit-a2ui-fixed-schema/route.ts
-  - id: gen-ui-interrupt
-    name: Gen UI Interrupt
-    description: Not supported by Langroid — Langroid does not expose a primitive equivalent to LangGraph's interrupt() that lets the agent pause and resume mid-run.
-    tags:
-      - generative-ui
-    route: /demos/gen-ui-interrupt
-    animated_preview_url:
-  - id: interrupt-headless
-    name: Interrupt (Headless)
-    description: Not supported by Langroid — same reason as gen-ui-interrupt; the headless variant requires the same interrupt primitive.
-    tags:
-      - generative-ui
-    route: /demos/interrupt-headless
-    animated_preview_url: